1、PD CEN/TR1335-4:2009ICS 97.140NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWPUBLISHED DOCUMENTOffice furniture Office work chairPart 4: Clarifications to EN 1335-1:2000(Dimensions)This Published Document was published under the authority of the Standards Policy and Strategy C
2、ommittee on 30 November 2009 BSI 2009ISBN 978 0 580 67232 3Amendments/corrigenda issued since publicationDate CommentsPD CEN/TR 1335-4:2009National forewordThis Published Document is the UK implementation of CEN/TR 1335-4:2009.The UK participation in its preparation was entrusted to TechnicalCommitt
3、ee FW/0/3, Office.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confe
4、r immunityfrom legal obligations.PD CEN/TR 1335-4:2009TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 1335-4 October 2009 ICS 97.140 English Version Office furniture - Office work chair - Part 4: Clarifications to EN 1335-1:2000 (Dimensions) Mobilier de bureau - Siges de travail de bur
5、eau - Partie 4: Clarifications apportes lEN 1335-1:2000 (Dimensions)Brombel - Bro-Arbeitsstuhl - Teil 4: Auslegungen zu EN 1335-1:2000 (Mae) This Technical Report was approved by CEN on 8 September 2009. It has been drawn up by the Technical Committee CEN/TC 207. CEN members are the national standar
6、ds bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingd
7、om. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 1335-4:2009: EPD
8、 CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Clarifications 53.1 Adjustable .53.1.1 General 53.1.2 Independently adjustable 53.1.3 Dependently adjustable 53.2 Determination of point “S“ 53.3 Position of seat and back rest 63.4
9、Seat height 63.5 Adjustable seat depth .63.6 Inclination of seat surface 63.7 Adjustable backrest inclination 63.8 Length of armrest 63.9 Height of arm rest 63.10 Clear width between the arm rests 73.11 Definition of chair types A, B and C .7Annex A (informative) Example for a measuring device for t
10、he dimensions of arm rests 8PD CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 3 Foreword This document (CEN/TR 1335-4:2009) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. Attention is drawn to the possibility that some of the elements of this docu
11、ment may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. PD CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 4 Introduction During the use of EN 1335-1, a number of problems have occurred because some terms have been interprete
12、d differently by different laboratories and/or manufacturers. PD CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 5 1 Scope This Technical Report specifies the definitions of a number of terms given in EN 1335-1:2000, which have been identified by CEN/TC 207/SC 3/WG 1 as being interpreted in different ways
13、by test laboratories and manufacturers. 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 amendme
14、nts) applies. EN 1335-1:2000, Office furniture Office work chair Part 1: Dimensions - Determination of dimensions 3 Clarifications 3.1 Adjustable 3.1.1 General The definitions given in 3.1.2 and 3.1.3 apply to all relevant clauses of EN 1335-1:2000. 3.1.2 Independently adjustable Independently adjus
15、table means that a component/function can change from one position to another independently of other components/functions. It can be continuous, within a range or in steps and may be lockable. It shall be noted that some functions need to be lockable in order that the chair can fulfil its functions,
16、 e.g. seat height, seat depth, back rest height, arm rest height and arm rest width. 3.1.3 Dependently adjustable Dependently adjustable applies to chairs, where the adjustment of one component changes the position of another component, e.g. in so-called syncro-chairs, where the adjustment of the se
17、at angle changes the angle of the back rest. It shall be noted that some functions need to be lockable in order that the chair can fulfil its functions, e.g. seat height, seat depth, back rest height, arm rest height and arm rest width. If a chair is dependently adjustable, the product information s
18、hall include a statement that to that effect, so that the user will know that it is not independently adjustable. 3.2 Determination of point “S“ The following clarification applies to EN 1335-1:2000, 3.6, 5.2, 6.6 and Table A.1, dimension f. In practise, point “S“ is not a point but a range, e.g. 30
19、 mm. When determining point “S“, mark the top and the bottom of the range. As a result point “S“ is the midpoint of that range. PD CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 6 3.3 Position of seat and back rest The following clarification applies to EN 1335-1:2000, Clause 5. If the backrest cannot be
20、adjusted to a vertical position without changing the inclination of the seat, the seat shall be kept horizontal and the backrest shall be set to the most vertical position without changing the inclination of the seat. 3.4 Seat height The following clarification applies to EN 1335-1:2000, 3.3 and 6.1
21、. The seat height does not correspond to the popliteal height. By knowing the angle of the seat and the distance from point A to the front edge of the seat, the corresponding popliteal height can be calculated, if necessary. 3.5 Adjustable seat depth The following clarification applies to EN 1335-1:
22、2000, 6.2 and Table A.1, dimension b. Seat depth adjustment changes the dimension from the front of the seat to the backrest. It shall be measured with the seat and backrest positioned as specified in Clause 6 of EN 1335-1:2000. NOTE Adjusting the angle of the backrest is not seat depth adjustment.
23、See also the definition of adjustable (3.1). The Figure in EN 1335-1 is unfortunately not correct. 3.6 Inclination of seat surface The following applies to EN 1335-1:2000 Table A.1 dimension e. See definition of adjustable (3.1). 3.7 Adjustable backrest inclination The following clarification applie
24、s to EN 1335-1:2000, 6.11 and Table A.1, dimension l, and it applies only to the measurement of the adjustment range. The measurement of the range shall be carried out using the same line on the back rest, e.g. the line of the top portion of the backrest. See also EN 1335-1:2000, Figure 14. 3.8 Leng
25、th of armrest The following applies to EN 1335-1:2000, 6.12 and Table A.1, dimension n. There is no change to EN 1335-1:2000, but it is recommended to measure the length of the arm rest using a device as shown in Figure 1. 3.9 Height of arm rest The following applies to EN 1335-1:2000, 6.14 and Tabl
26、e A.1, dimension p. Armrests which are up to 5 mm from flat shall be treated as flat arm rests (EN 1335-1:2000, Figure 17a). PD CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 7 3.10 Clear width between the arm rests The following clarification applies to EN 1335-1:2000, Table A.1, dimension r. For type A
27、and B, the (+) and (-) columns in Table A.1 states that it is not allowed for adjustable clear width that the dimension is greater than 510 mm and smaller than 460 mm. For chairs with adjustable clear width between the arm rests the minimum dimension of 460 mm may be smaller and the maximum dimensio
28、n of 510 mm may be greater. 3.11 Definition of chair types A, B and C The following clarification applies to EN 1335-1:2000, Annex A. Type A: Adjustability of all important functions with largest range of adjustment. Type B: All important functions are adjustable with smaller range of adjustment tha
29、n Type A. Type C: Limited adjustability with small adjustment ranges than Type B. PD CEN/TR 1335-4:2009CEN/TR 1335-4:2009 (E) 8 Annex A (informative) Example for a measuring device for the dimensions of arm rests Figure A.1 Measuring devices PD CEN/TR 1335-4:2009This page has been intentionally left
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