SIST EN 1335-3:2010
(Main)Office furniture - Office work chair - Part 3: Test methods
Office furniture - Office work chair - Part 3: Test methods
The document specifies a method for the assessment of the surface resistance to dry heat and applies to rigid surfaces of all finished products regardless of materials.
Büromöbel - Büro-Arbeitsstuhl - Teil 3: Prüfverfahren
In dieser Norm sind Prüfverfahren zur Bestimmung der mechanischen Standsicherheit, Festigkeit und Dauerfunktionstüchtig¬keit von Büro-Arbeitsstühlen festgelegt.
In dieser Norm werden keine Bauartprüfungen für Bauteile von Büro-Arbeitsstühlen festgelegt.
Die Prüfungen sind so gestaltet, dass sie auf ein vollständig montiertes und gebrauchsfertiges Möbelstück anwendbar sind.
Die Prüfungen bestehen im Aufbringen von Kräften auf die verschiedenen Teile des Gegenstands, durch die sowohl der normale funktionelle Gebrauch, als auch der vernünftigerweise zu erwartende Missbrauch simuliert werden.
Die Prüfungen sind zur Bewertung der Eigenschaften konzipiert, ohne Berücksichtigung der Werkstoffe, Gestaltung/Konstruktion oder der Fertigungsverfahren.
Die Prüfergebnisse gelten lediglich für den geprüften Gegenstand. Sollen die Prüfergebnisse auch für andere ähnliche Gegenstände gültig sein, ist es wichtig, dass der Probekörper für das Fertigungsmodell repräsentativ ist.
Die nach der vorliegenden Norm durchzuführenden Prüfungen dienen zum Nachweis der zufriedenstellenden Gebrauchstauglichkeit des Gegenstands in seiner vorgesehenen Umgebung. Die Sicherheitsprüfungen sind in EN 1335-2 festgelegt, zusätzliche Lasten, Massen und Zyklen für Funktionsprüfungen sind in Anhang C dieser Norm angegeben.
Die Prüfungen wurden für Einheiten/Bauteile entwickelt, die noch nicht in Gebrauch waren. Sie können jedoch, sofern sie entsprechend angepasst wurden, zur Fehlersuche verwendet werden.
Eine Beurteilung von Alterung und Funktionsminderung ist nicht enthalten. Die Prüfungen sind nicht für die Beurteilung der Dauerfunktionstüchtigkeit der Polsterung, d. h. der Füllwerkstoffe und Bezüge, vorgesehen.
Anhang A (normativ) enthält Angaben zur Gestaltung von Sitz-Druckstempeln und Anhang B (normativ) enthält Angaben zur Gestaltung von Standfestigkeits-Druckstempeln.
Mobilier de bureau - Sieges de travail de bureau - Partie 3: Méthodes d'essai
La présente norme spécifie des méthodes d’essai pour la détermination de la stabilité, de la résistance et de la durabilité des sieges de travail de bureau.
Elle ne spécifie pas les essais d’approbation de type pour les composants des sieges.
Les essais sont conçus pour etre appliqués a un article de mobilier entierement assemblé et pret a l’emploi.
Les dimensions données dans les essais s’appliquent aux sieges de travail de bureau destinés a des personnes de taille adulte.
Les essais consistent a appliquer a diverses parties de l’article des forces simulant une utilisation fonctionnelle normale, ainsi que toute utilisation anormale raisonnablement prévisible.
Ces essais sont destinés a évaluer les propriétés indépendamment des matériaux et des processus de conception/construction ou de fabrication.
Les résultats d’essai ne valent que pour l’article soumis a essai. Lorsqu’il est prévu d’appliquer les résultats d’essai a d’autres articles similaires, il convient que l’échantillon soit représentatif du modele de production.
Les essais menés conformément a la présente norme visent a démontrer la capacité de l’article a fournir un service satisfaisant dans l’environnement prévu. Ces essais ont été élaborés pour des sieges ou des composants non encore utilisés. Toutefois, justification a l’appui, ils peuvent etre utilisés dans le cadre d’expertises suite a une défaillance.
La présente norme ne formule aucune exigence relative au produit. Il convient que celles-ci soient spécifiées dans un cahier des charges. En l’absence de données disponibles, des valeurs pour les forces et les cycles sont suggérées dans l’Annexe A (informative). Celles-ci peuvent etre utilisées pour des personnes de taille adulte, quel que soit leur poids et leur nombre d’heures de travail.
L’évaluation du vieillissement et des dégradations n’est pas prise en compte.
Pisarniško pohištvo - Pisarniški delovni stoli - 3. del: Preskusne metode
Ta evropski standard opredeljuje mehanske preskusne metode za določanje stabilnosti, trdnosti in trajnosti pisarniških delovnih stolov. Ta evropski standard ne določa homologacijskih preskusov za sestavne dele stola. Preskusi so namenjeni uporabi na delu pohištva, ki je popolnoma sestavljen in pripravljen za uporabo. Preskusi so sestavljeni iz vnosa sil, ki posnemajo običajno funkcionalno uporabo in upravičeno pričakovano napačno uporabo, na različne dele predmeta. Preskusi so zasnovani tako, da ovrednotijo lastnosti ne glede na materiale, model/konstrukcijo ali proizvodne postopke. Rezultati preskusov veljajo le za preskušani izdelek. Če rezultati preskusov veljajo tudi za druge, podobne izdelke, je pomembno, da je preskusni vzorec predstavnik proizvodnega modela. Preskusi, opravljeni v skladu s tem standardom, so namenjeni dokazovanju zmožnosti predmeta, da v predvidenem okolju omogoča zadovoljivo delovanje. Varnostne zahteve določa EN 1335-2, dodatne obremenitve, teže in cikli za funkcionalne preskuse pa so navedeni v Prilogi C (informativni). Preskusi so namenjeni enotam/sestavnim delom, ki še niso bile v uporabi. Z ustrezno utemeljitvijo pa se lahko uporabijo tudi za preiskavo okvare. Ocena staranja in razpada ni vključena. Preskusi niso namenjeni ocenjevanju trajnosti oblazinjenja, tj. polnilnih materialov in prevlek. V Prilogi A (normativni) so podani podatki o zasnovi plošč za obremenitev sedeža in v Prilogi B (normativni) za zasnovo plošč za stabilnostno obremenitev.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Pisarniško pohištvo - Pisarniški delovni stoli - 3. del: Preskusne metodeBüromöbel - Büro-Arbeitsstuhl - Teil 3: PrüfverfahrenMobilier de bureau - Sieges de travail de bureau - Partie 3: Méthodes d'essaiOffice furniture - Office work chair - Part 3: Test methods97.140PohištvoFurnitureICS:Ta slovenski standard je istoveten z:EN 1335-3:2009SIST EN 1335-3:2010en,fr,de01-januar-2010SIST EN 1335-3:2010SLOVENSKI
STANDARDSIST EN 1335-3:20011DGRPHãþD
SIST EN 1335-3:2010
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1335-3April 2009ICS 97.140Supersedes EN 1335-3:2000
English VersionOffice furniture - Office work chair - Part 3: Test methodsMobilier de bureau - Sièges de travail de bureau - Partie 3:Méthodes d'essaiBüromöbel - Büro-Arbeitsstuhl - Teil 3: PrüfverfahrenThis 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 EuropeanStandard the status of a 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 in 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, 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 Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1335-3:2009: ESIST EN 1335-3:2010
EN 1335-3:2009 (E) 2 Contents Page Foreword .3 1 Scope .4 2 Normative references .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 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 . 11 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 . 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
SIST EN 1335-3:2010
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 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 of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1335-3:2000. This series consist of following parts: EN 1335-1, Office furniture — Office work chair — Part 1: Dimensions — Determination of dimensions; EN 1335-2, Office 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 been 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 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 1335-3:2010
EN 1335-3:2009 (E) 4 1 Scope This European Standard specifies mechanical test methods for determining 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 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 tested. 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 intended 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 for 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 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 1335-2:2009, 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 part, 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 mechanism. SIST EN 1335-3:2010
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 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 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 assembly 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 stated 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 addressed 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 the 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 deformation 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 load 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 maintained for not less than 10 s and not more than 15 s. SIST EN 1335-3:2010
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 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 nominal 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 applicable 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 assessment 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 function is impaired; d) loosening of any means of fixing components to the unit; e) changes that may affect stability. SIST EN 1335-3:2010
EN 1335-3:2009 (E) 7 Table 1 — Positioning of chair components Clause Test 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
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 maximum tension most likely to cause overturning most likely to cause overturning most likely to cause overturning7.1.4 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 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 position 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 position highest position rearmost position mid range least likely to cause overturning --- --- 7.2.3 Arm rest downward static load test – central
lowest position horizontal --- --- --- --- most likely to cause failure --- 7.2.4 Arm rest downward static load test – front lowest position horizontal --- --- --- --- highest, foremost position --- 7.2.5 Arm rest sideways static load test lowest position horizontal --- --- --- --- highest, widest position --- 7.2.6 Foot rest static load test --- --- --- --- --- least likely to cause overturning --- highest position 7.3.1 Seat and back durability highest position horizontal highest position most likely to cause failure mid range 90° to the base arm --- --- 7.3.2 Arm rest durability lowest position horizontal --- --- maximum tension --- highest, widest position --- 7.3.3 Swivel test highest position horizontal, foremost position highest position rearmost position --- --- --- --- 7.3.4 Foot rest durability --- --- --- --- --- least likely to cause ove
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