1、January 2010DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 97.140!$Tm“1564974www.d
2、in.deDDIN EN 1335-2Office furniture Office work chair Part 2: Safety requirementsEnglish version of DIN EN 1335-2:2010-01Brombel Bro-Arbeitsstuhl Teil 2: SicherheitsanforderungenEnglische Fassung DIN EN 1335-2:2010-01SupersedesDIN EN 1335-2:2009-08www.beuth.deDocument comprises pages11DIN EN 1335-2:
3、2010-01 Start of validity This standard takes effect on 1 August 2009. National foreword This standard has been prepared by Technical Committee CEN/TC 207 “Furniture”, (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (
4、Timber and Furniture Standards Committee), Working Committee NA 042-05-19 AA Brombel. Amendments This standard differs from DIN EN 1335-2:2002-08 as follows: a) The castor durability (former subclause 6.2) has been defined as a functional test. b) The foot rest stability and foot rest static load ha
5、ve been defined as a safety test. c) Annex A “Loads, masses and cycles for safety tests” has been added. Compared with DIN EN 1335-2:2009-08, the following correction has been made to the German version only and therefore does not affect the English text: d) In Table A.1, 7.1.6, Kippen nach hinten b
6、ei Sthlen mit neigbarer Rckenlehne has been replaced with Kippen nach hinten bei Sthlen ohne neigbare Rckenlehne (Rearwards overturning of chairs without back rest inclination). Previous editions DIN 4551: 1973-09, 1975-10, 1988-06 DIN 4552: 1975-10 DIN EN 1335-2: 2002-08, 2009-08 2 EUROPEAN STANDAR
7、D NORME EUROPENNE EUROPISCHE NORM EN 1335-2 April 2009 ICS 97.140 Supersedes EN 1335-2:2000 English Version Office furniture Office work chair Part 2: Safety requirements Mobilier de bureau Siges de travail de bureau Partie 2: Exigences de scurit Brombel Bro-Arbeitsstuhl Teil 2: Sicherheitsanforderu
8、ngen This European Standard was approved 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 bibliographic
9、al references concerning such national 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 translationunder the responsibility of a CEN
10、member into its own language and notified 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, Ital
11、y, Latvia, Lithuania, Luxembourg, 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
12、Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1335-2:2009: EEN 1335-2:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Safety requirements 4 4.1 General design requ
13、irements .4 4.1.1 Corners and edges, trapping, pinching and shearing .4 4.1.2 Adjusting devices 5 4.1.3 Connections .5 4.1.4 Avoidance of soiling 5 4.2 Test sequence 5 4.3 Stability during use6 4.4 Rolling resistance of the unloaded chair 6 4.5 Strength and durability .6 5 Information for use 7 Anne
14、x A (normative) Loads, masses and cycles for safety tests 8 DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 3 Foreword This document (EN 1335-2:2009) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which is held by UNI. This European Standard shall be given the status of
15、 a national 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
16、of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1335-2:2000. This series consist of following parts: EN 1335-1, Office furniture Office work chair Part 1: Dimensions Determination of dimensions; EN 1335-2,
17、Office 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) castor durability (former 6.2) has been defined as functional test; b) foot rest stability an
18、d foot rest static load have been defined as safety test. According to the 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, F
19、rance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 4 1 Scope This part of EN 1335 specifies the
20、 mechanical safety requirements for office work chairs. The requirements are based upon use for 8 h a day by persons weighing up to 110 kg. For more severe conditions of use, increased requirements will be necessary. Annex A (normative) includes loads, masses and cycles for safety tests. Additional
21、loads, masses and cycles for functional tests can be found in EN 1335-3:2009, Annex C. 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
22、 the referenced document (including any amendments) applies. EN 1335-1:2000, Office furniture Office work chair Part 1: Dimensions Determination of dimensions EN 1335-3:2009, Office furniture Office work chair Part 3: Test methods EN 12529:1998, Castors and wheels Castors for furniture Castors for s
23、wivel chairs Requirements 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 castor assembly comprising a housing, one or more wheels, an axle and, if required, accessories EN 12529:1998 4 Safety requirements 4.1 General design requirements 4.1.
24、1 Corners and edges, trapping, pinching and shearing The chair shall be so designed as to minimise the risk of injury to the user. All parts of the chair with which the user comes into contact during intended use, shall be so designed that physical injury and damage to property are avoided. These re
25、quirements are met when: a) the safety distance of accessible movable parts is either 8 mm or 25 mm in any position during movement; b) accessible corners are rounded with minimum 2 mm radius; DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 5 c) the edges of the seat, back rest and arm rests which are in c
26、ontact with the user when sitting in the chair are rounded with minimum 2 mm radius; d) the edges of handles are rounded with minimum 2 mm radius in the direction of the force applied; e) all other edges are free from burrs and rounded or chamfered; f) the ends of accessible hollow components are cl
27、osed or capped. 4.1.2 Adjusting devices Movable and adjustable parts shall be designed so that injuries and inadvertent operation are avoided. It shall be possible to operate the adjusting devices from sitting position in the chair. 4.1.3 Connections It shall not be possible for any load bearing par
28、t of the chair to come loose unintentionally. 4.1.4 Avoidance of soiling All parts which are lubricated to assist sliding (greasing, lubricating, etc.) shall be designed to protect users from lubricant stains when in normal use. 4.2 Test sequence The same chair shall be tested in the following seque
29、nce: a) stability tests (optional); b) rolling resistance test (optional); c) seat and back rest tests; d) foot rest static load test; e) arm rests durability test; f) arm rest downward static load test - central (see Table A.2, Footnote a); g) stability tests; h) arm rest downward static load test
30、- central (see Table A.2, Footnote b); i) rolling resistance test. DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 6 4.3 Stability during use The chair shall not overbalance under the following conditions: a) by pressing down on the front edge of the seat surface in the most adverse position; b) by leaning
31、 out over the arm rests; c) by leaning against the back rest; d) by sitting on the front edge. Requirement a) is fulfilled if the chair does not overbalance when tested according to 7.1.1 of EN 1335-3:2009 with the forces and numbers of cycles according to Table A.1 of this standard. Requirements b)
32、 and d) are fulfilled if the chair does not overbalance when tested according to 7.1.2, 7.1.3, 7.1.4 and 7.1.5 of EN 1335-3:2009 with the forces and numbers of cycles according to Table A.1 of this standard. Requirement c) is fulfilled if the chair does not overbalance when tested according to 7.1.6
33、 or 7.1.7 of EN 1335-3:2009 with the forces and numbers of cycles according to Table A.1 of this standard. 4.4 Rolling resistance of the unloaded chair The unloaded chair shall not roll unintentionally. This requirement is met when: a) the castors are of identical construction; b) the rolling resist
34、ance is 12 N when tested according to EN 1335-3:2009, 7.4. 4.5 Strength and durability The chair shall be constructed to ensure that it does not create a risk of injury to the user of the chair under the following conditions: a) sitting on the seat, both centrally and off-centre; b) moving forward,
35、backwards, and sideways while sitting in the chair; c) leaning over the arm rests; d) pressing down on the arm rests while getting up from the chair. These requirements are fulfilled when after the tests specified in 7.2.1, 7.2.2, 7.2.6, 7.3.1 and 7.3.2 of EN 1335-3:2009 with the forces and numbers
36、of cycles according to Table A.2 of this standard: e) there are no fractures of any member, joint or component, and f) there is no loosening of joints intended to be rigid, and g) no major structural element is significantly deformed and the chair fulfils its functions after removal of the test load
37、s and when: DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 7 h) after the test in 7.2.3 of EN 1335-3:2009 with the forces and numbers of cycles according to Table A.2 of this standard, the arm rests show no fracture. 5 Information for use Each chair shall be accompanied by information for use in the langu
38、age of the country in which it will be delivered to the end user. It shall contain at least the following details: a) information regarding the intended use; b) information regarding possible adjustments and chair type (see EN 1335-1:2000); c) instruction for operating the adjusting mechanisms; d) i
39、nstruction for the care and maintenance of the chair; e) information regarding all adjustments; f) information for chairs with seat height adjustments with energy accumulators that only trained personnel may replace or repair seat height adjustment components with energy accumulators; g) information
40、 on the choice of castors in relation to the floor surface. DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 8 Annex A (normative) Loads, masses and cycles for safety tests Table A.1 Loads, masses and cycles for stability tests Clauses given in EN 1335-3:2009 Test Loads Cycle 7.1.1 Front edge overturning M1
41、27 kg 1 7.1.2 Forward overturning F1F2600 N 20 N 1 7.1.3 Forward overturning for chairs with foot rests F1 F21 100 N 20 N 1 7.1.4 Sideways overturning for chairs without arm rests F1F2600 N 20 N 1 7.1.5 Sideways overturning for chairs with arm rests F1F2F3250 N 350 N 20 N 1 7.1.6 Rearwards overturni
42、ng of chairs without back rest inclination F1F2600 N 192 N 1 7.1.7 Rearwards overturning of chairs with back rest inclination Number of discs: 13 1 DIN EN 1335-2:2010-01 EN 1335-2:2009 (E) 9 Table A.2 Loads and cycles for strength and durability tests Clauses given in EN 1335-3:2009 Test Loads Cycle
43、s 7.2.1 Seat front edge static load test F1 1 600 N 107.2.2 Combined seat and back static load test F1 F2 1 600 N 560 N 107.2.6 Foot rest static load test F 1 300 N 107.3.1 Seat and back durability Step 1 Loading Point A F 1 500 N 120 000Step 2 Loading Point C F 1 200 N 80 000Loading Point B F 320 N
44、 Step 3 Loading Point J F 1 200 N 20 000Loading Point E F 320 N Step 4 Loading Point F F 1 200 N 20 000Loading Point H F 320 N Step 5 Loading Point D and G (alternating) F 1 100 N 20 0007.3.2 Arm rest durability F 400 N 60 0007.2.3 Arm rest downward static load test central F 750 N a 5F 900 Nb 5a This test shall be carried out before the stability tests b This test shall be carried out after the stability testsDIN EN 1335-2:2010-01
