1、BSI Standards PublicationBS EN 747-2:2012Furniture Bunk beds andhigh bedsPart 2: Test methodsBS EN 747-2:2012+A1:2015Incorporating corrigendum January 2013National forewordA list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not p
2、urport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 83806 4 ICS 97.140 Compliance with a British Standard cannot confer immunity from legal oblig
3、ations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2012.Amendments/corrigenda issued since publicationDate Text affectedBS EN 747-2:2012+A1:2015 BRITISH STANDARD31 January 2013 Implementation of CEN Correction Notice 29 August 20
4、12: Subclause 4.2 paragraph 1, the number of cones has been changed to six; Subclause 5.5 paragraph 5, the word and has been changed to orThis British Standard is the UK implementation of EN 747-2:2012+A1:2015. It supersedes BS EN 747-2:2012 which is withdrawn.The start and finish of text introduced
5、 or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text .The UK participation in its preparation was entrusted by Technical Committee FW/O, Furniture, to Subcommittee FW/0/2, Domestic and Contract Furniture.carry the number of the CEN amendment. For example, te
6、xt altered by CEN amendment A1 is indicated by . !“3 J 2010 une 5 Implementation of CEN amendment A1:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 747-2:2012+A1 May 2015 ICS 97.140 Supersedes EN 747-2:2012English Version Furniture - Bunk beds and high beds - Part 2: Test methods Meubles -
7、 Lits superposs et lits surlevs - Partie 2: Mthodes dessai Mbel - Etagenbetten und Hochbetten - Teil 2: Prfverfahren This European Standard was approved by CEN on 8 March 2012 and includes Amendment 1 approved by CEN on 16 April 2015. CEN members are bound to comply with the CEN/CENELEC Internal Reg
8、ulations 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 the CEN-CENELEC Management Centre or to any CEN mem
9、ber. 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 Centre has the same status as the official versions.
10、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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland
11、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in
12、 any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 747-2:2012+A1:2015 EContents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 General test conditions .5 3.1 Preliminary preparation 5 3.2 Application of forces .6 3.3 Tolerances 6 4 Test equipmen
13、t 6 4.1 General 6 4.2 Measuring cones6 4.3 Bed base impactor .7 4.3.1 Bed base impactor (see Figure 2) 7 4.3.2 Springs 7 4.3.3 Striking surface 8 4.4 Loading pads 8 4.5 Test mattress 8 4.6 Test mass .9 4.7 Stops .9 4.8 Floor surface 9 4.9 Tread impactor .9 4.10 Template for V-shaped openings 10 5 Te
14、st procedures 10 5.1 Inspection before testing . 10 5.2 Inspection of product . 10 5.3 Measurements . 10 5.3.1 Holes, gaps and openings . 10 5.3.2 V and irregular shaped holes, gaps and openings . 11 5.4 Strength tests 13 5.4.1 Positioning of the bed 13 5.4.2 Static load on safety barriers 13 5.4.3
15、Upwards and downwards static load on bed base . 14 5.4.4 Impact test on bed base . 14 5.4.5 Durability test on bed base 15 5.5 Durability test of frame and fastenings 15 5.6 Ladders or other means of access . 16 5.6.1 Vertical static load on treads . 16 5.6.2 Horizontal static loads on treads 16 5.6
16、.3 Durability of treads . 17 5.6.4 Tread impact test 17 5.7 Stability test . 18 5.8 Fastening of the upper bed to the lower bed . 18 6 Test report . 18 BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)Foreword This document (EN 747-2:2012+A1:2015) has been prepared by Technical Committee CEN/TC 207
17、 “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 November 2015, and conflicting national standards shall be withdrawn at the latest by Novembe
18、r 2015. 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 document includes Amendment 1, approved by CEN on 2015-04-16. The start a
19、nd finish of text introduced or altered by amendment is indicated in the text by tags ! “. This document supersedes !EN 747-2:2012“. !deleted text“ 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,
20、Furniture Bunk beds and high beds Part 2: Test methods. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Fin
21、land, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 747-2:2012+A1:2015 EN 747
22、-2:2012+A1:2015 (E)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 functional use. It also deals with misuses that can be reasonably expecte
23、d to occur. The tests are designed to evaluate properties without regard for materials, design/construction or manufacturing processes. BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)1 Scope This European Standard specifies test methods for the safety, strength and durability of bunk beds and hig
24、h beds for domestic and non-domestic use. The loads and forces in the strength and 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 applicabl
25、e safety requirements are given in EN 747-1. 2 Normative references The following 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
26、 the referenced document (including any amendments) applies. !EN 747-1:2012+A1:2015“, Furniture 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 G
27、eneral test conditions 3.1 Preliminary preparation For furniture that includes hygroscopic materials, 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 el
28、apsed prior to testing. The sample shall be tested as delivered. If the sample is a knock-down 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
29、to be fastened together in pairs or attached to the structure of a building shall be tested 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 temperatur
30、e between 15 C and 25 C. If, during a test, the temperature falls outside of the range of 15 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.
31、The tests shall be carried out on the same sample and following the order of the clauses of 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 ou
32、t as closely as possible to the specified procedure. BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)3.2 Application of forces The test forces in durability and static load tests shall be applied sufficiently slowly to ensure that negligible dynamic load is applied. The forces in durability tests
33、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. 3.3 Tolerances Unless otherwise stated, the following tolerances a
34、re 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; all angles shall have an accuracy of 2 of the nominal angle. The t
35、olerance 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 adversely affected when the above tolerances are met. 4 Test equipme
36、nt 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 deformation of the unit/component during testing so that the loads ar
37、e 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 six cones with the diameters 5 mm, 7 mm, 12 mm, 25 mm, 60 mm and 75 mm. The 5 mm, 7 mm, 25 mm and 75
38、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. BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)Figure 1 Examples of measuring cones 4.3 Bed base impactor 4.3.1 Bed base impactor (see Figure 2) Approximately 200 mm in
39、 diameter, separated from the striking surface by helical compression springs and 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 whol
40、e apparatus, including mass, springs and striking surface, shall have a mass of (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
41、compressed to an initial load of (1 040 5) N (measured statically), and the amount 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
42、restrain the free fall 2 Striking surface Figure 2 Bed base impactor BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)4.3.3 Striking 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 Figur
43、e 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 300 mm radius with a 12 mm front edge radius (see Figure 3). Dimensions in millimetres Figure 3 Loading pad 4.4.2 Rigid and cylindrical object, 100 mm in diameter, havi
44、ng 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 t
45、he same as those of the bed base tested. The test mattress may have a cover, in which case it shall have the following characteristics: composition: pure cotton; weave in plain: 1/1; mass per unit area: 100 g/m to 120 g/m; warp and weft: 20 threads/cm to 30 threads/cm; finishing: washed, no finishin
46、g agents; cover make up: tight fit, but with no restrictions on the foam. BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)The same part of the test mattress shall not be re-used within 30 min and the mattress shall be replaced if damaged, or after 20 tests. 4.6 Test mass A mass of 75 kg distribute
47、d over an area of approximately 300 mm x 300 mm or a diameter of approximately 340 mm. 4.7 Stops Stops, to prevent the bed from sliding but not tilting, no higher than 12 mm, except in cases where the design of the bed necessitates the use of higher stops, in which case the lowest that will prevent
48、the bed from sliding shall be used. 4.8 Floor surface Horizontal, rigid, flat and smooth. 4.9 Tread impactor Apparatus as shown in Figure 4. Dimensions in millimetres Key 1 HTS (High Tensile Steel) tube Outer diameter: 25 Wall thickness: 2 Approximate mass: 1,6 kg 2 Impact pad 100 x 100 x 6 steel pl
49、ate fitting Total mass: 0,5 kg Figure 4 Tread impactor BS EN 747-2:2012+A1:2015 EN 747-2:2012+A1:2015 (E)! 4.10 Template for V-shaped openings The template for V and irregular shaped openings shall be made from plastics or other hard, smooth material with the dimensions given in Figure 5. The tolerance for the angles shall be 1. Key 1 B portion 2 A portion Figure 5 V and irregular shaped openings template“ 5 Test procedures 5.1 Inspection before testing Prior to the test, visually
