1、BRITISH STANDARDBS EN 15338:2007+A1:2010Hardware for furniture Strength and durability of extension elements and their componentsICS 97.140g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g
2、3g38g50g51g60g53g44g42g43g55g3g47g36g58National forewordThis British Standard is the UK implementation of EN 15338:2007+A1:2010. It supersedes BS EN 15338:2007 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes
3、 to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee FW/0, Furniture, to Subcommittee FW/0/1, Common test methods for furniture.A list of organizations represe
4、nted on this subcommittee can be obtained on request to its secretary.UK committee FW/0/1 would like to draw the attention of users to the fact that storage furniture fitted with hardware that satisfies the requirements of this standard will not automatically satisfy the requirements of standards sp
5、ecifying requirements for the safety, strength and durability of moving parts of storage furniture. These currently include: EN 14074, EN 14727, EN 14749, ISO 7170, BS 6222-2 and BS 4875-7.This publication does not purport to include all the necessary provisions of a contract. Users are responsible
6、for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 15338:2007+A1:2010This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2008 BSI 2010Amendments/corrigenda issued since publi
7、cationDate Comments 30 April 2010 Implementation of CEN amendment A1:2010ISBN 978 0 580 68432 6EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15338:2007+A1 February 2010 ICS 97.140 Supersedes EN 15338:2007English Version Hardware for furniture - Strength and durability of extension elements an
8、d their components Quincaillerie dameublement - Rsistance mcanique et endurance des lments extractibles et de leurs composants Mbelbeschlge - Festigkeit und Dauerhaltbarkeit von Auszgen und deren Komponenten This European Standard was approved by CEN on 23 December 2006 and includes Amendment 1 appr
9、oved by CEN on 4 January 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
10、 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, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and noti
11、fied 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, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem
12、bourg, Malta, Netherlands, 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 righ
13、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15338:2007+A1:2010: EEN 15338:2007+A1:2010 (E) 2 Contents Page Foreword 4Introduction . 51 Scope 62 Normative references 63 Terms and definitions . 64 General test conditions . 74.1 Preliminary p
14、reparation 74.2 Test equipment 74.3 Application of forces . 74.4 Tolerances 84.5 Sequence of testing . 84.6 Inspection and assessment of results 85 Test apparatus . 85.1 Loading pad 85.2 Apparatus for slam-shut/open tests 85.3 Masses 95.4 Glass marbles 95.5 Loads for filing pockets 95.6 Test frame a
15、nd test drawer . 95.7 Particle board properties 115.8 Wood component. 116 Test procedures and requirements 116.1 General 116.2 Overload tests 116.2.1 General 116.2.2 Vertical downwards static overload. 116.2.3 Horizontal sideways static overload 126.2.4 Outwards static overload 136.2.5 Slam-shut/ope
16、n 136.3 Functional tests . 136.3.1 General 136.3.2 Deflection of extension element bottoms . 136.3.3 Deformation of front and back . 146.3.4 Operating forces 156.3.5 1stvertical downwards static load test 156.3.6 1sthorizontal sideways static load . 156.3.7 Determination of reference point for the d
17、eflection of front . 166.3.8 Durability 166.3.9 Deflection of front 176.3.10 2ndvertical downwards static load . 176.3.11 2ndhorizontal sideways static load 176.3.12 Operating forces 186.3.13 Slam-shut/open 186.4 Corrosion resistance . 186.5 Test report 18Annex A (normative) Product information syst
18、em . 19Annex B (normative) Apparatus for slam-shut/open of extension elements 20BS EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 3 Annex C (normative) Test parameters 24BS EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 4 Foreword This document (EN 15338:2007+A1:2010) has been prepared by Technical
19、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 August 2010, and conflicting national standards shall be withdrawn at the
20、 latest by August 2010. This document includes Amendment 1, approved by CEN on 2010-01-04. This document supersedes EN 15338:2007. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. According to the CEN/CENELEC Internal Regulations, the national stan
21、dards 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,
22、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 5 Introduction The aim of this European Standard is to provide furniture manufacturers, designers and developers with comparable information regarding the p
23、erformance of extension elements and drawers. BS EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 6 1 Scope This European Standard specifies test methods and requirements for the strength and durability of all types of extension elements and their components for all fields of application, except table
24、 extensions. The tests consist of the application of loads, forces and velocities simulating normal functional use, as well as misuse, that might reasonably be expected to occur. With the exception of the corrosion test in 6.4, the tests are designed to evaluate properties without regard to material
25、s, design/construction or manufacturing processes. The strength and durability tests only relate to the extension elements and the parts used for the attachment, e.g. screws. The strength and durability tests are carried out in a test frame with specified properties. The test results can only be use
26、d as a guide to the performance of a piece of furniture. The test results are only valid for the extension element tested. These results may be used to represent the performance of production models provided that the tested model is representative of the production model. Ageing and influences of he
27、at and humidity are not included. 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 referenced document (including any amendments) a
28、pplies. EN 320, Fibreboards Determination of resistance to axial withdrawal of screws EN 323, Wood-based panels Determination of density EN ISO 6270-2, Paints and varnishes Determination of resistance to humidity Part 2: Procedure for exposing test specimens in condensation-water atmospheres (ISO 62
29、70-2:2005) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 catch device device, which keeps or pulls an extension element in place, but does not require a second action in order to release it, e.g. a magnetic catch or a self-closing or self-o
30、pening mechanism 3.2 extension element components that can be pulled out and pushed in, e.g. drawers, suspended pocket files, keyboard trays 3.3 loading capacity, M mass in Kg, as specified by the manufacturer, for which the extension element will fulfil the strength and durability requirements. BS
31、EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 7 NOTE The loading capacity includes the extension element and the load in/on the extension element. In other EN standards, this is referred to as total mass. 3.4 damper mechanism which gently brings the extension element to a stop 4 General test condit
32、ions 4.1 Preliminary preparation The extension element shall be assembled/mounted according to the instructions supplied with it. If mounting or assembly instructions are not supplied, the most adverse configuration shall be used and the mounting or assembly method shall be recorded in the test repo
33、rt. Fittings shall be tightened before testing and shall not be re-tightened unless specifically required in the manufacturers instructions. If the configuration must be changed to produce the worst-case conditions, this shall be recorded in the test report. For testing a range of related extension
34、elements, only worst case(s) need to be tested. The tests shall be carried out in indoor ambient conditions at a temperature between 15 C and 25 C. If during a test the temperature is outside of the range of 15 Cto 25 C, the maximum and/or minimum temperature shall be recorded in the test report. Ex
35、tension elements which include structural hardware parts made of hygroscopic plastic materials, e.g. polyamide shall be conditioned at (23 5) C and a relative humidity of (50 5) % for at least 7 days before testing. In the case of designs not addressed in the test procedures, the test shall be carri
36、ed out as far as possible as described, and deviations from the test procedure recorded in the test report. Before beginning the testing, visually inspect the extension element thoroughly. Record any defects so that they are not assumed to have been caused by the tests. Carry out measurements when s
37、pecified. 4.2 Test equipment Unless otherwise specified, the tests may be applied by any suitable device, because results are not dependent upon the apparatus. The equipment shall not inhibit deformation of the extension element, i. e. it shall be able to move so that it can follow the deformation o
38、f the extension element during testing. All loading pads shall be capable of pivoting in relation to the direction of the applied force. The pivot point shall be as close as practically possible to the load surface. 4.3 Application of forces The forces in the static load tests shall be applied suffi
39、ciently slowly to ensure that negligible dynamic force is applied. Unless otherwise specified, each force shall be maintained for not less than 10 and not more than 15 s. The forces in durability tests shall be applied at a rate to ensure that excessive heating does not occur. The forces may be repl
40、aced by masses. The relation 10 N = 1 kg may be used for this purpose. BS EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 8 4.4 Tolerances Unless otherwise stated, the following tolerances are applicable: Forces: 5 % of the nominal force; Velocities: 5 % of the nominal velocity; Masses: 1 % of the no
41、minal mass; Dimensions: 1 mm of the nominal dimension; Angles: 2 of the nominal angle; The accuracy for the positioning of loading pads shall be 5 mm. 4.5 Sequence of testing The tests shall be carried out in the same sequence as the clauses are numbered in this standard. If the clause sequence is n
42、ot followed, the sequence shall be recorded in the test report. 4.6 Inspection and assessment of results Before and after completion of each test, carry out the inspection as specified, after using adjustment devices, if available. Before any measurements are taken, the loaded extension shall be mov
43、ed 10 times over the total extension length. Record any changes that have taken place since the initial inspection. The inspection shall include at least the following: a) the fracture of any component or joint; b) the loosening of any joint intended to be rigid, which can be demonstrated by hand pr
44、essure; c) the deformation or wear of any part or component such that its functioning is impaired; d) the loosening of any means of fixing components; e) any impaired function of a component or part. 5 Test apparatus 5.1 Loading pad Rigid disc 100 mm in diameter (or 50 mm to be used in limited space
45、), with a flat face and a 12 mm front edge blend radius. 5.2 Apparatus for slam-shut/open tests Two examples for suitable apparatus as well as calibration instructions are given in Annex B. BS EN 15338:2007+A1:2010EN 15338:2007+A1:2010 (E) 9 5.3 Masses Masses shall be designed so that they do not re
46、inforce the structure or re-distribute the stresses. 5.4 Glass marbles Marbles made of solid glass with 10 mm to 15 mm diameter. They shall be in a flexible bag large enough to allow them to move in the bag during the test. In cases where the volume of the glass marbles is greater than the volume of
47、 the extension element, steel marbles shall be used. This shall be noted in the test report. 5.5 Loads for filing pockets Suspended filing pockets shall be loaded with typing paper or an equivalent alternative as shown in Figure 1. In cases where it is not possible to achieve the loading capacity wi
48、th paper, the additional mass shall be steel and shall be positioned as the spacing material. This shall be noted in the test report. Key 1 Typing paper 2 Spacing material (for example polystyrene) in the middle of the extension element 3 Front of extension element 4 Air gap (NOTE Will be determined
49、 by the size of the paper) 5 Air gap 25mm 6 mm A Side view B Top view Figure 1 Loading of suspended filing pockets with typing paper 5.6 Test frame and test drawer The tests specified in 6.2 and 6.3 shall be carried out in a test frame (Figure 2, which is so constructed that the deformation under the applied load is no more than 1 mm). Unless otherwise specifie
