EN 14703-2007 en Furniture - Links for non-domestic seating linked together in a row - Strength requirements and test methods《家具 非家用座椅连成一排的链接 强度要求和试验方法》.pdf

1、BRITISH STANDARDBS EN 14703:2007Furniture Links for non-domestic seating linked together in a row Strength requirements and test methodsThe European Standard EN 14703:2007 has the status of a British StandardICS 97.140g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g5

2、4g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14703:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2007ISBN 978 0 580 50700 7National forewordT

3、his British Standard was published by BSI. It is the UK implementation of EN 14703:2007.The UK participation in its preparation was entrusted to Technical Committee FW/0, Furniture.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does

4、 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.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE N

5、ORMEN 14703April 2007ICS 97.140English VersionFurniture - Links for non-domestic seating linked together in arow - Strength requirements and test methodsAmeublement - Assemblages pour siges usage nondomestique assembls en une range - Exigences dersistance et mthodes dessaiMbel - Verbindungselemente

6、fr Reihenbestuhlung frden Nicht-Wohnbereich - Festigkeitsanforderungen undPrfverfahrenThis European Standard was approved by CEN on 15 March 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a

7、national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 i

8、n any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, E

9、stonia, 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 STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPI

10、SCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14703:2007: EEN 14703:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms a

11、nd definitions .4 4 Principle of link performance .5 5 General test conditions.5 6 Test equipment and apparatus.6 7 Test procedure.11 8 Test report 13 Bibliography 14 EN 14703:2007 (E) 3 Foreword This document (EN 14703:2007) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secre

12、tariat 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 October 2007, and conflicting national standards shall be withdrawn at the latest by October 2007. According to the

13、CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania

14、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14703:2007 (E) 4 1 Scope This European Standard specifies strength requirements and test methods for the links used for non-domestic seating, which can be linked

15、 together in a row. This European Standard does not specify strength or durability requirements for individual chairs as these are contained within EN 15373. Assessment of ageing and degradation is not included. Tests carried out according to this European Standard are intended to demonstrate the ab

16、ility of the links to function correctly in their intended environment. It should be understood that fulfilling the requirements does not ensure that the links will operate as expected in circumstances or emergencies that cannot be foreseen. 2 Normative references The following referenced documents

17、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) applies. Not applicable 3 Terms and definitions For the purposes of this document, the follow

18、ing terms and definitions apply. 3.1 linked seating single chairs fitted with means whereby they can be linked together in a row or separated and used singly or stored. NOTE Seating mounted on beams or fixed to the floor or wall of a building is not linked seating 3.2 positive links links which rema

19、in linked if the chairs are overturned or lifted up 3.3 gravity links links which link each chair to the previous one when the chair is put down. This type of link will disengage when the chair is lifted up 3.4 structure load bearing parts of furniture including the frame, seat, back, arm supports a

20、nd suspension 3.5 static test test consisting of heavy loads being applied a few times to ensure that the furniture has sufficient strength to perform its function under the highest levels of loading that might reasonably be expected to occur 3.6 impact test test to assess the strength of the articl

21、e under the rapid rates of loading that occasionally occur EN 14703:2007 (E) 5 4 Principle of link performance There are two options for the performance of chair links subjected to heavy loads: a) chairs shall stay linked (7.3.1 option A), or b) chairs shall disengage (7.3.1 option B). 5 General tes

22、t conditions 5.1 General The tests are designed to be applied to linked seating that is fully assembled and ready for use. The tests consist of the application, to various parts of the item, of loads or forces simulating normal functional use and foreseeable emergency situations. The tests are desig

23、ned to evaluate properties without regard to materials, design/construction or manufacturing processes. The test results are only valid for the article tested. When the test results are intended to be applied to other similar articles, the test specimen shall be representative of the production mode

24、l. In the case of designs not catered for in the test procedures, the test shall be carried out as far as possible as described, and deviations from the test procedure recorded in the test report. 5.2 Preliminary preparation The furniture shall be tested as delivered. Knock-down furniture shall be a

25、ssembled according to the instructions supplied with it. The furniture shall be assembled and/or configured according to the instructions supplied. If the furniture can be assembled or combined in different ways, the most adverse combination shall be used for each test. Knock-down fittings shall be

26、tightened before testing and further tightening shall not take place unless specifically required by the manufacturer. The tests shall be carried out in indoor ambient conditions but if during a test the atmospheric temperature is below 15 C or above 25 C the maximum and/or minimum temperature shall

27、 be recorded in the test report. 5.3 Application of forces Unless otherwise stated static loads shall be maintained for a period of (10 2) s. 5.4 Tolerances For tolerances, unless otherwise stated: forces shall have an accuracy of 5 % of the nominal force; masses an accuracy of 0,5 % of the nominal

28、mass; dimensions an accuracy of 1,0 mm of the nominal dimension. The tolerance for the positioning of loading pads shall be 5 mm. Forces may be replaced by masses. The relationship 1 kg = 10 N shall be used for this purpose. EN 14703:2007 (E) 6 6 Test equipment and apparatus 6.1 General The tests ma

29、y be applied by any suitable device because results are dependent only upon correctly applied loads and not upon the apparatus, except in the case of impact tests where the apparatus described in 6.5 shall be used. The equipment shall not inhibit the deformation of the chair during testing. It shall

30、 be able to move so that it can follow the deformation of the chair during testing, so that the loads are always applied at the specified point and in the specified direction. All loading pads shall be capable of pivoting in relation to the direction of the applied force and the pivot point shall be

31、 as close as practically possible to the load surface. Key A seat load B back load Figure 1 Position of loading point template EN 14703:2007 (E) 7 Key Scale: 1 square = 20 mm 1 rear 2 seat load 3 seat portion 4 front 5 top 6 back portion 7 back load 8 bottom 9 pivot point Figure 2 Loading surface cu

32、rves for seat and back loading point template EN 14703:2007 (E) 8 Dimensions in millimetres Key A seat load B back load 1 typical section 2 mark to fix 90 3 straight edge for determination of seat or back inclination Figure 3 Loading point template EN 14703:2007 (E) 9 6.2 Floor, horizontal, flat and

33、 rigid with a smooth surface. 6.3 Stops, to prevent the article from sliding but not tilting, no higher than 12 mm except in cases where the design of the item necessitates the use of higher stops, in which case the lowest that will prevent the item from sliding shall be used. 6.4 Local loading pad,

34、 (i.e. for loading tops of backs or fronts of seats), rigid cylindrical object 100 mm in diameter, with a flat face and a 12 mm edge radius. 6.5 Foam for use with loading pads, 25 mm thick layer of flexible foam with a bulk density of (120 25) kg/m. The foam shall be attached to the faces of the loa

35、ding pads or alternatively positioned between the loading pad and the test structure. 6.6 Horizontal impact device, consisting of a WBA standard basketball size 5, (see Note 1), inflated to a pressure of (73,5 5) kPa and attached by a network of elastic cords to the ball mounting ring. The ball seat

36、ing shall consist of a ring of timber (or timber derivative) having an outside diameter of 150 mm and an inside diameter of 90 mm. Its rear face shall be attached to the main body of the impactor and its front face shaped to fit the ball. The main body of the impactor shall consist of a mass support

37、ed by cords or flexible wires 850 mm long so that the longitudinal axis of the ball, mounting ring and main body assembly shall remain horizontal when the support cords are displaced from the vertical. The main body of the impactor shall be of such a mass that the total mass of all moving parts, exc

38、luding the support cords, shall be 50 kg. The impactor is illustrated in Figure 4. NOTE Basketballs approved by the WBA should be marked as such on the product. EN 14703:2007 (E) 10 Dimensions in millimetres Key a) general view b) suggested construction c) detail of ball mounting ring 1 safety clamp

39、 2 mass 3 disc weights 4 ball mounting ring 5 basketball 6 elastic cords Figure 4 Horizontal impact device EN 14703:2007 (E) 11 7 Test procedure 7.1 General Whenever a loading pad (6.4) is used a layer of foam (6.5) shall be placed between the pad and the chair structure. 7.2 Row displacement test T

40、he test shall be carried out on an assembly of eleven chairs linked together. Stops (6.3) shall be placed so as to prevent forward or rearward movement of the two end chairs. If necessary sufficient weight to prevent the row from overturning shall be shared equally on the two end seats only. Apply a

41、 horizontal force of 200 N rearwards to the centre of the front edge of the seat structure of the central seat measure the distance from the front legs at the centre of the row to a line joining the front legs at the end of the row (see Figure 5). Repeat the procedure with horizontal forward force o

42、f 200 N applied to the rear edge of the seat structure of the central seat. The displacement of the centre point of a row shall not be greater than 200 mm rearward or 200 mm forwards from the straight line (or the nominal radius of circumference when the links are designed to hold the chairs in a cu

43、rved row rather than a straight row). Key 1 rearwards displacement Figure 5 Row Displacement Test (rearwards displacement shown) EN 14703:2007 (E) 12 7.3 Link strength 7.3.1 General These tests relate to the performance of links in an emergency situation. When tested according to 7.3.2 and 7.3.3 the

44、 links shall satisfy the same option in both tests. The links shall either fulfil the requirements of Option A or Option B as follows: (see Clause 4). Option A The linking mechanism and the chair structure may be damaged in this test, but the row shall remain intact. Option B At least one chair shal

45、l become disengaged from another. 7.3.2 Overturning test The test shall be carried out on an assembly of eleven chairs linked together. Stops (6.3) shall be placed to prevent forward and rearward movement of the two end chairs only. Apply force rearwards to the centre of the top of the back of the c

46、entral seat sufficiently large to overturn the row. Repeat the procedure with a force forwards to the centre of the top of the back of the central seat sufficiently large to overturn the row. 7.3.3 Horizontal impact test The test shall be carried out on an assembly of five chairs linked together. St

47、ops (6.3) shall be placed so as to prevent forward or rearward movement of the two end chairs only. 160 kg shall be placed on both of the two end seats. Position the horizontal impact device (6.6) so that it just touches the impact point when hanging at rest. Apply a rearward horizontal impact at th

48、e centre of the seat front edge of the central seat (see Figure 6). The impactor shall drop through a height of 60 mm and a total of 10 impacts shall be applied. Repeat with a horizontal impact ten times forwards to the centre of the top edge of the back structure of the central seat. EN 14703:2007

49、E) 13 Figure 6 Horizontal impact test 8 Test report The test report shall include the following information: a) reference to this European Standard, i.e. EN 14703; b) type of chair tested and details of the links; c) test results; d) type of link according to 3.1, 3.2, Clause 4 and 7.3.1; e) details of any deviations from this European Standard; f) name and address of the test facility; g) date of test. EN 14703:2007 (E) 14 Bibliography 1 EN 15373, Furniture Strength, durability and safety Requirements for non-domestic seati