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1、BS EN 1335-3:2009 ICS 13.180; 97.140 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Office furniture Office work chair Part 3: Test methods Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI This British Standard was pu
2、blished under the authority of the Standards Policy and Strategy Committee on 30 April 2009 BSI 2009 ISBN 978 0 580 58649 1 Amendments/corrigenda issued since publication DateComments BS EN 1335-3:2009 National foreword This British Standard is the UK implementation of EN 1335-3:2009. It supersedes
3、BS EN 1335-3:2000 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee FW/0/3, Office. 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 provisi
4、ons of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EUROPEAN STANDARD NORME EUROPENNE EUROP
5、ISCHE NORM EN 1335-3 April 2009 ICS 97.140Supersedes EN 1335-3:2000 English Version Office furniture - Office work chair - Part 3: Test methods Mobilier de bureau - Siges de travail de bureau - Partie 3: Mthodes dessai Brombel - Bro-Arbeitsstuhl - Teil 3: Prfverfahren This European Standard was appr
6、oved by CEN on 28 February 2009. 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 nation
7、al 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 no
8、tified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
9、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 2009 CENAll rights of ex
10、ploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1335-3:2009: E Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EN 1335-3:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references
11、4 3 Terms and definitions .4 4 General test conditions .5 4.1 Preliminary preparation 5 4.2 Test equipment 5 4.3 Application of forces .5 4.4 Tolerances 6 4.5 Sequence of testing .6 4.6 Inspection and assessment of results 6 5 Test apparatus .8 5.1 Test surface 8 5.2 Stops .8 5.3 Seat loading pad 8
12、5.4 Smaller seat loading pad 8 5.5 Local loading pad 9 5.6 Back loading pad .9 5.7 Arm rest durability test apparatus 10 5.8 Strap . 10 5.9 Stability loading device 10 5.10 Loading discs 11 5.11 Test surface for castor durability (and rolling resistance of the unloaded chair) . 11 6 Loading points 1
13、1 6.1 Loading point “A“ . 11 6.2 Loading point “B“ . 11 6.3 Loading point “C“ . 11 6.4 Loading point “D“ . 11 6.5 Loading point “E“ . 12 6.6 Loading point “F“ 12 6.7 Loading point “G“ . 12 6.8 Loading point “H“ . 12 6.9 Loading point “J“ 12 7 Tests methods . 13 7.1 Stability 13 7.2 Static load tests
14、 17 7.3 Durability tests 19 7.4 Rolling resistance of the unloaded chair . 21 8 Test report . 21 Annex A (normative) Seat loading pad data 23 Annex B (normative) Stability loading device data 25 Annex C (informative) Loads, masses and cycles for functional tests 27 Licensed CopyChinese University of
15、 Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EN 1335-3:2009 (E) 3 Foreword This document (EN 1335-3:2009) has been prepared by Technical Committee CEN/TC 207 “Furnitures”, the secretariat of which is held by UNI. This European Standard shall be given the status of a nat
16、ional standard, either by publication of an identical text or by endorsement, at the latest by October 2009, and conflicting national standards shall be withdrawn at the latest by October 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat
17、ent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1335-3:2000. This series consist of following parts: EN 1335-1, Office furniture Office work chair Part 1: Dimensions Determination of dimensions; EN 1335-2, Office
18、 furniture Office work chair Part 2: Safety requirements; EN 1335-3, Office furniture Office work chair Part 3: Test methods. The main changes with respect to the previous edition are listed below: a) ISO 21015:2007 has been adopted as far as possible; b) loads and cycles for the safety tests have b
19、een moved to EN 1335-2; c) Annex C includes loads and cycles for functional tests; d) seat and back durability test procedures have been significantly changed; e) determination of the maximum offset of the backrest has been deleted. According to the CEN/CENELEC Internal Regulations, the national sta
20、ndards 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, Luxembourg, Malta, Netherlands, Norway, Poland,
21、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EN 1335-3:2009 (E) 4 1 Scope This European Standard specifies mechanical test methods for determining
22、 the stability, strength and durability of office work chairs. This European Standard does not specify type approval tests for chair components. The tests are designed to be applied to an article of furniture that is fully assembled and ready for use. The tests consist of the application, to various
23、 parts of the item, of forces simulating normal functional use, as well as misuse that might reasonably be expected to occur. The tests are designed to evaluate properties without regard to materials, design/construction or manufacturing processes. The test results are only valid for the article tes
24、ted. When the test results are intended to be applied to other similar articles, it is important that the test specimen be representative of the production model. Tests carried out according to this standard are intended to demonstrate the ability of the item to give satisfactory service in its inte
25、nded environment. The safety requirements are specified in EN 1335-2 and additional loads, masses and cycles for functional tests can be found in Annex C (informative). The tests have been developed for units/components that have not been in use. However, when properly justified, they may be used fo
26、r fault investigation. Assessment of ageing and degradation is not included. The tests are not intended to assess the durability of upholstery, i.e. filling materials and covers. Data are given for the design of seat-loading pads in Annex A (normative) and for the design of stability- loading pad in
27、 Annex B (normative). 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) applies. EN 1
28、335-2:2009, Office furniture Office work chair Part 2: Safety requirements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 office work chair piece of seating furniture for one person, with a back rest, with or without arm rests, whose upper p
29、art, which includes the seat, can rotate in the horizontal plane and can be adjusted in height NOTE Other adjustments may be included. 3.2 column office work chair component that connects the base and the seat structure NOTE A column normally incorporates a seat height adjustment and swivel mechanis
30、m. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EN 1335-3:2009 (E) 5 3.3 locking device device which inhibits the movement of the seat action and/or the back rest 3.4 arm rest length distance between vertical lines through its front and
31、 rear edges NOTE In the case of an arm rest, which is not horizontal or which is curved, the length is measured in a horizontal plane 20 mm below the highest point of the arm rest. 3.5 supporting point castor or glide 4 General test conditions 4.1 Preliminary preparation The unit shall be assembled
32、and/or configured according to the instructions supplied with it. The most adverse configuration shall be used for each test, see Table 1. For testing a range of related chair models, only worst case(s) need to be tested. If mounting or assembly instructions are not supplied, the mounting or assembl
33、y method shall be recorded in the test report. Fittings shall not be re-tightened unless specifically required by the manufacturer. If the configuration must be changed to produce the worst case conditions, any re- tightening of the fittings shall be recorded in the test report. Unless otherwise sta
34、ted all tests shall be carried out on the same sample. The tests shall be carried out in indoor ambient conditions. If during a test the temperature is outside of the range of 15 C to 25 C, the maximum and/or minimum temperature shall be recorded in the test report. In the case of designs not addres
35、sed 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. Before beginning the testing, visually inspect the unit thoroughly. Record any defects so that they are not assumed to have been caused by th
36、e tests. Carry out measurements if specified. 4.2 Test equipment Unless otherwise specified, the tests may be applied by any suitable device because results are dependent only upon correctly applied forces and not on the apparatus. The equipment shall not inhibit deformation nor cause unnatural defo
37、rmation of the unit/component, i.e. it shall be able to move so that it can follow the deformation of the unit/component 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 l
38、oad surface. If a loading pad tends to slide use a slip resistant material between the loading pad and the surface being tested. 4.3 Application of forces The forces in the static load tests shall be applied sufficiently slowly to ensure that negligible dynamic force is applied. Each force shall be
39、maintained for not less than 10 s and not more than 15 s. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EN 1335-3:2009 (E) 6 The forces in durability tests shall be applied at a rate to ensure that excessive heating does not occur. Each
40、force shall be maintained for (2 1) s. The forces may be applied using masses. 4.4 Tolerances Unless otherwise stated, the following tolerances are applicable: Forces: 5 % of the nominal force Masses: 1 % of the nominal mass Dimensions: 5 mm of the nominal dimension on soft surfaces 1 mm of the nomi
41、nal dimension on all other surfaces Angles: 2 of the nominal angle The accuracy for the positioning of loading pads shall be 5 mm. The tests specify the application of forces. Masses may, however, be used. The relation 10 N for 1 kg may be used for this purpose. 4.5 Sequence of testing All applicabl
42、e tests shall be carried out on the same sample. The sequence of the safety tests shall be as specified in EN 1335-2:2009, 4.2. If functional tests shall be carried out, this shall be done in the sequence of Table C.1 after completing all the safety tests specified in EN 1335-2. 4.6 Inspection and a
43、ssessment of results After completion of each test, inspect the unit again. Record any changes including: a) fracture of any component or joint; b) loosening of any joint intended to be rigid, which can be demonstrated by hand pressure; c) deformation or wear of any part or component such that its f
44、unction is impaired; d) loosening of any means of fixing components to the unit; e) changes that may affect stability. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:14, Uncontrolled Copy, (c) BSI BS EN 1335-3:2009 EN 1335-3:2009 (E) 7 Table 1 Positioning of chair components Clause Test
45、 Seat height Seat Back rest in height Back rest in depth Tilt stiffness adjustment Castors and base Arm rest Foot rest 7.1.1 Front edge overturning highest position foremost position highest position foremost position maximum tension most likely to cause overturning most likely to cause overturning
46、7.1.2 Forward overturning highest position foremost position highest position foremost position maximum tension most likely to cause overturning most likely to cause overturning - 7.1.3 forward overturning for chairs with foot rest highest position foremost position lowest position foremost position
47、 maximum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning 7.1.4 Sideways overturning for chairs without arm rests highest position foremost position highest position foremost position maximum tension most likely to cause overturning - - 7.1.5
48、 Sideways overturning for chairs with arm rests highest position foremost position highest position foremost position maximum tension most likely to cause overturning most likely to cause overturning - 7.1.6 Rearwards overturning of chairs without back rest inclination highest position rearmost posi
49、tion highest position rearmost position minimum tension most likely to cause overturning most likely to cause overturning - 7.1.7 Rearwards overturning of chairs with back rest inclination highest position rearmost position highest position rearmost position minimum tension most likely to cause overturning most likely to cause overturning - 7.2.1 Seat front edge static load test highest position foremost position - - - - - - 7.2.2 Combined seat and back static load highest position most adverse
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