1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 747-2:2012Furniture Bunk beds andhigh bedsPart 2: Test methodsCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reprod
2、uction or networking permitted without license from IHS-,-,-BS EN 747-2:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 747-2:2012. It supersedes BS EN 13453-2:2004 and BS EN 747-2:2007 which are withdrawn.The UK participation in its preparation was entrust
3、ed to Technical Committee FW/0/2, Domestic and Contract 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 the necessary provisions of a contract. Users are responsible for its correct applicati
4、on. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 70564 9 ICS 97.140 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee
5、 on 30 April 2012.Amendments issued since publicationDate T e x t a f f e c t e dCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 747-2:2012EUROPEAN STANDARD NORME EUROPENNE
6、 EUROPISCHE NORM EN 747-2 April 2012 ICS 97.140 Supersedes EN 13453-2:2004, EN 747-2:2007English Version Furniture - Bunk beds and high beds - Part 2: Test methods Meubles - Lits superposs et lits surlevs - Partie 2: Mthodes dessai Mbel - Etagenbetten und Hochbetten - Teil 2: Prfverfahren This Europ
7、ean Standard was approved by CEN on 8 March 2012. 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 conce
8、rning such national standards may be obtained on application to 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 int
9、o its own language and notified to the CEN-CENELEC Management 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, Irela
10、nd, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue M
11、arnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 747-2:2012: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitte
12、d without license from IHS-,-,-BS EN 747-2:2012EN 747-2:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 General test conditions .53.1 Preliminary preparation 53.2 Application of forces .53.3 Tolerances 64 Test equipment 64.1 General 64.2 Measuring cones64.3 Bed b
13、ase impactor .74.3.1 Bed base impactor (see Figure 2) 74.3.2 Springs 74.3.3 Striking surface 74.4 Loading pads 74.5 Test mattress 84.6 Test mass .84.7 Stops .94.8 Floor surface 94.9 Tread impactor .95 Test procedures .95.1 Inspection before testing 95.2 Inspection of product . 105.3 Measuring of hol
14、es, gaps and openings 105.4 Strength tests 105.4.1 Positioning of the bed 105.4.2 Static load on safety barriers 105.4.3 Upwards and downwards static load on bed base . 115.4.4 Impact test on bed base . 115.4.5 Durability test on bed base 125.5 Durability test of frame and fastenings 135.6 Ladders o
15、r other means of access . 135.6.1 Vertical static load on treads . 135.6.2 Horizontal static loads on treads 135.6.3 Durability of treads . 145.6.4 Tread impact test 145.7 Stability test . 155.8 Fastening of the upper bed to the lower bed . 156 Test report . 15Copyright European Committee for Standa
16、rdization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 747-2:2012EN 747-2:2012 (E) 3 Foreword This document (EN 747-2:2012) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is h
17、eld 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 October 2012, and conflicting national standards shall be withdrawn at the latest by October 2012. Attention is drawn to the possibility
18、 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 EN 747-2:2007 and EN 13453-2:2004. Compared to EN 747-2:2007 and EN 13453-2:2004, the following mo
19、difications have been made: a) Subclause 4.2 Measuring cones: A 7 mm cone has been added. b) Subclause 5.3 Measuring of holes, gaps and openings: includes measuring of 7 mm holes. c) Subclause 5.4.3 Upwards and downwards static load on bed base: the downwards force has been increased to 1 200 N (fro
20、m EN 13453). d) Subclause 5.4.5 Durability test on bed base: new test (from EN 13453). e) Subclause 5.6.1 Vertical static load on treads: the force has been increased from 1 000 N to 1 200 N (from EN 13453). f) Subclause 5.7 Stability test: the horizontal force has been changed from an overturning m
21、oment of 170 Nm to a horizontal force of 120 N at the points most likely to cause overturning. EN 747 is divided into the following parts: EN 747-1, Furniture Bunk beds and high beds Part 1: Safety, strength and durability requirements; EN 747-2, Furniture Bunk beds and high beds Part 2: Test method
22、s. 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, Greece, Hungary, Iceland, Irel
23、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or net
24、working permitted without license from IHS-,-,-BS EN 747-2:2012EN 747-2:2012 (E) 4 Introduction This part of EN 747 describes a number of tests consisting of the application, to various parts of bunk beds and high beds, of loads or forces applied by one adult occupant per bed during normal functiona
25、l use. It also deals with misuses that can be reasonably expected to occur. The tests are designed to evaluate properties without regard for materials, design/construction or manufacturing processes. Copyright European Committee for Standardization Provided by IHS under license with CENNot for Resal
26、eNo reproduction or networking permitted without license from IHS-,-,-BS EN 747-2:2012EN 747-2:2012 (E) 5 1 Scope This European Standard specifies test methods for the safety, strength and durability of bunk beds and high beds for domestic and non-domestic use. The loads and forces in the strength a
27、nd durability tests apply to beds with an internal length greater than 140 cm and a maximum bed base width of 120 cm. The tests are designed to be applied to a bed that is fully assembled and ready for use. The applicable safety requirements are given in EN 747-1. 2 Normative references The followin
28、g documents, 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 747-1:2012, Furn
29、iture Bunk beds and high beds Part 1: Safety, strength and durability requirements EN ISO 2439:2008, Flexible cellular polymeric materials Determination of hardness (indentation technique) (ISO 2439:2008) 3 General test conditions 3.1 Preliminary preparation For furniture that includes hygroscopic m
30、aterials, at least one week in normal indoor conditions shall have elapsed between manufacturing (or assembly) and testing. For all other furniture, at least 48 hours in normal indoor conditions shall have elapsed prior to testing. The sample shall be tested as delivered. If the sample is a knock-do
31、wn type, it shall be assembled according to the instructions supplied with it. If the instructions allow for different combinations, the most adverse combination shall be used for each test. Samples intended to be fastened together in pairs or attached to the structure of a building shall be tested
32、as single, free-standing samples unless the instructions specifically require attachment to another sample or the building structure. The test shall be carried out in indoor ambient conditions at a temperature between 15 C and 25 C. If, during a test, the temperature falls outside of the range of 15
33、 C to 25 C, the maximum and/or minimum temperature shall be recorded in the test report. Knock-down fittings shall be tightened before testing and shall not be re-tightened throughout the testing procedures. The tests shall be carried out on the same sample and following the order of the clauses of
34、EN 747-1. If a test cannot be carried out as specified in this standard, e.g. because a loading pad cannot be used for the application of a force due to the design of the product, the test shall be carried out as closely as possible to the specified procedure. 3.2 Application of forces The test forc
35、es in durability and static load tests shall be applied sufficiently slowly to ensure that negligible dynamic load is applied. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS
36、EN 747-2:2012EN 747-2:2012 (E) 6 The forces in durability tests shall be applied sufficiently slowly to ensure that kinetic heating does not occur. Unless otherwise specified, static loads shall be maintained for (10 2) s. Unless otherwise specified, durability loads shall be applied for (2 1) s. 3.
37、3 Tolerances Unless otherwise stated, the following tolerances are applicable to the test equipment: all forces shall have an accuracy of 5 % of the nominal force; all masses shall have an accuracy of 1 % of the nominal mass; all dimensions shall have an accuracy of 1 mm of the nominal dimension; al
38、l angles shall have an accuracy of 2 of the nominal angle. The tolerance for the positioning of loading pads shall be 5 mm. The forces may be replaced by masses. The relationship of 10 N = 1 kg shall be used. NOTE For the purposes of uncertain measurements, test results are not considered to be adve
39、rsely affected when the above tolerances are met. 4 Test equipment 4.1 General The test forces may, unless otherwise stated, be applied by any suitable device, as results only depend on correctly applied forces and loads and not on the apparatus. The equipment shall be capable of following the defor
40、mation of the unit/component during testing so that the loads are always applied at specified points and in specified directions. 4.2 Measuring cones Cones with an angle of (30 1) made of plastic or some other hard, smooth material (see Figure 1). There shall be five cones with the diameters 5 mm, 7
41、 mm, 12 mm, 25 mm, 60 mm and 75 mm. The 5 mm, 7 mm, 25 mm and 75 mm cone diameters shall have tolerances of (0 0,1) mm. The 12 mm and 60 mm cone diameters shall have tolerances of (0 0,1) mm. Figure 1 Examples of measuring cones Copyright European Committee for Standardization Provided by IHS under
42、license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 747-2:2012EN 747-2:2012 (E) 7 4.3 Bed base impactor 4.3.1 Bed base impactor (see Figure 2) Approximately 200 mm in diameter, separated from the striking surface by helical compression springs and
43、 free to move relative to it on a line perpendicular to the plane of the central area of the striking surface (see Figure 2). The body and associated parts minus the springs shall have a mass of (17 0,1) kg and the whole apparatus, including mass, springs and striking surface, shall have a mass of (
44、25 0,1) kg. 4.3.2 Springs Springs shall be such that the combined spring system has a nominal spring rate of (7 2) N/mm and the total friction resistance of the moving parts is less than 1 N. The spring system shall be compressed to an initial load of (1 040 5) N (measured statically), and the amoun
45、t of spring compression movement available from the initial compression point to the point where the springs become fully closed shall not be less than 60 mm. Key 1 Connecting part of the lifting device which shall not restrain the free fall 2 Striking surface Figure 2 Bed base impactor 4.3.3 Striki
46、ng surface Rigid and circular object, 200 mm in diameter, the face of which has a convex spherical curvature of a 300 mm radius with a 12 mm front edge radius (see Figure 3). 4.4 Loading pads 4.4.1 Rigid and circular object, 200 mm in diameter, the face of which has a convex spherical curvature of a
47、 300 mm radius with a 12 mm front edge radius (see Figure 3). Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 747-2:2012EN 747-2:2012 (E) 8 Dimensions in millimetres Figure
48、 3 Loading pad 4.4.2 Rigid and cylindrical object, 100 mm in diameter, having a flat, smooth, hard surface and rounded edge with a radius of 12 mm. 4.5 Test mattress Soft polyether foam sheet with a thickness of 100 mm, a bulk density of (30 2) kg/m3, an indentation hardness index of (170 20) N in accordance with A 40 of EN ISO 2439:2008, and with dimensions more or less the same as those of the bed base tested. The test mattress may have a cover, in which case
