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1、 7 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12520 March 2010 ICS 97.140 Supersedes ENV 12520:2000 English Version Furniture - Strength, durability and safety - Requirements for domestic seating Meubles - Rsistance, durabilit et scurit - Exigences relatives aux siges usage domestique Mbel
2、 - Festigkeit, Dauerhaltbarkeit und Sicherheit - Anforderungen an Sitzmbel fr den Wohnbereich This European Standard was approved by CEN on 20 February 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the
3、 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 the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Germa
4、n). 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus,
5、 Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT
6、 EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12520:2010: E EN 12520:2010 (E) 2 Contents Page Foreword 3 1 Scope 4
7、 2 Normative references 4 3 Terms and definitions .4 4 Test sequence 4 5 Constructional requirements 5 5.1 General requirements 5 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
8、 Shear and squeeze points during use .5 5.3 Stability .5 5.4 Strength and durability .6 5.4.1 General 6 5.4.2 Strength and durability requirements7 6 Information for use 7 7 Test report 7 Annex A (normative) Backward fall test 8 A.1 Backward fall test 8 EN 12520:2010 (E) 3 Foreword This document (EN
9、 12520:2010) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which 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 conflicti
10、ng national standards shall be withdrawn at the latest by September 2010. Attention is drawn to the 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 documen
11、t supersedes ENV 12520:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gree
12、ce, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 12520:2010 (E) 4 1 Scope This European standard specifies the minimum requirements for the safety, str
13、ength 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, outdoor seating and to links for linked seating for which European Standards exist. It
14、 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 kg. It does not include requirements for electrical safety. It does not include require
15、ments 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, only the edition cited applies. For undated references, the latest edition of the refe
16、renced 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 durability 3 Terms and definitions For the purposes of this document, the following terms and
17、 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 is high 3.2 parts accessible during setting up and folding parts to which access can on
18、ly 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 less than 18 mm in any position during movement 4 Test sequence The tests shall be ca
19、rried out in the order in which they are listed in this document. EN 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.
20、These requirements are met when: 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
21、adjustable parts shall be designed 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 i
22、n normal use. 5.2 Shear and 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 b
23、e assumed to be in control of 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 powere
24、d mechanisms With the exception 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 S
25、hear and squeeze points during 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
26、and actions, e.g. attempting 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. EN 12520:2010 (E) 6 5.4 Strength and durabili
27、ty 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 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 an
28、d 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 rail static load test a EN 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
29、 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 25000 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
30、 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, 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 i
31、mpacts 5 13. Back impact test c EN 1728:2000, 6.16 Height of fall, mm/0 10 times 120/28 a This test is only applicable to seating with a seat height 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 fo
32、rce 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. EN 12520:2010 (E) 7 5.4.2 Strength and durability requirements The strength and durability requirements are fulfilled when during and after testing in accordance with Tab
33、le 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 use Information for use shall be available i
34、n 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 with seat height adjustments with energy
35、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) reference to this European Standard; b) piece of
36、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; g) name and address of the test facility;
37、h) date of test. EN 12520:2010 (E) 8 Annex A (normative) Backward fall test 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
38、 the backrest. Measure the force required to lift the front legs off the 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 - -