1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 14021:2003 Stone shields for off-road motorcycling suited to protect riders against stones and debris Requirements and test methods The European Standard EN 14021
2、:2003 has the status of a British Standard ICS 13.340.10 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIBS EN 14021:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 22 Ja
3、nuary 2004 BSI 22 January 2004 ISBN 0 580 43291 2 National foreword This British Standard is the official English language version of EN 14021:2003. WARNING. The UK, as a member of CEN, is obliged to publish EN 14021:2003 as a British Standard. However, attention is drawn to the fact that during the
4、 development of this European Standard, the UK consistently voted against its approval as a European Standard. The reason for this disapproval is that during discussion of this standard by BSI Committee PH/3/9, which mirrors the work of the CEN Committee, TC162/WG9, several UK experts expressed the
5、opinion that the average peak force requirement given in 4.7 may be too high. BSI will assume no liability whatsoever for the failure on the part of users of this standard not to consider this aspect. The UK participation in its preparation was entrusted by Technical Committee PH/3, Protective cloth
6、ing, to Subcommittee PH/3/9, Clothing for protection of riders of motorcycles, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publi
7、cations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the nec
8、essary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, o
9、r proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright notic
10、e displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN140
11、21 December2003 ICS13.340.10 Englishversion Stoneshieldsforoffroadmotorcyclingsuitedtoprotectriders againststonesanddebrisRequirementsandtestmethods Parepierrespourlemotocyclismetoutterraindestins protgerlesmotocyclistescontrelespierresetautres menusprojectilesExigencesetmthodesdessai Protektorengeg
12、enAufprallvonSteinenund GesteinstrmmernfrdenSchutzvonGelnde MotorradfahrernAnforderungenundPrfverfahren ThisEuropeanStandardwasapprovedbyCENon7November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalst
13、andardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsi
14、bilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovak
15、ia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN14021:2003E
16、 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEN14021:2003(E) 2 Contents Page Foreword. 3 Introduction 4 1 Scope . 5 2 Normativereferences . 5 3 Definition 5 4 Requirements 5 4.1 Construction 5 4.2 Minimumprotectedareas . . 5 4.2.
17、1 General. 5 4.2.2 Breastguard 5 4.2.3 Shoulderguards. . 6 4.2.4 Bicepsguards . 6 4.2.5 BackGuard 6 4.3 Sizing 6 4.4 Surfacecontinuity . 6 4.5 Attachments 6 4.6 Ergonomicrequirements . 6 4.7 Impactperformancerequirements. . 7 5 Testequipment . 7 5.1 Apparatus 7 5.1.1 Droppingapparatus 7 5.1.2 Hemisp
18、hericalimpactor . 7 5.1.3 Anvil . 7 5.1.4 Forcemeasurementinstrumentation . 7 5.1.5 Toleranceanduncertainty . 8 5.2 Circularprobeforsurfacecontinuitytest 8 6 Testmethods . 8 6.1 Samplesfortechnicalexaminationandergonomictesting. 8 6.2 Visualcheckandmeasurement 8 6.3 Testingthesurfacecontinuityofston
19、eshields . . 8 6.4 Testingrestraintsofstoneshields . 8 6.5 Ergonomicassessmentofstoneshields . 8 6.6 Impacttestingofstoneshields . 9 7 Marking 9 8 Informationsuppliedbythemanufacturer .10 AnnexZA (informative)ClausesofthisEuropeanStandardaddressingessentialrequirementsor otherprovisionsofEUDirective
20、s . 14 Bibliography . 15 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEN14021:2003(E) 3 Foreword Thisdocument(EN14021:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC 162“Protective clothingincludinghandandarmprotectionandlifejacket
21、s”,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnat thelatestbyJune2004. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheE
22、uropeanCommissionandthe EuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisdocument. Thisdocumentincludesabibliography. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorga
23、nizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands, Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO
24、/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEN14021:2003(E) 4 Introduction StoneShieldsconformingtothisEuropeanStandardarearticulategarmentsintendedfortheprotectionof chest,optionallyofshoulders,backandbicepsspecificallyagainstloftedstonesanddebrissuchastho
25、se ridersoftenencounterinoffroadmotorcyclingandinalliedsportsactivitieswherethesehazardsmayexist. Acompletestoneshieldprovidesprotectiontothewholeofthetorso. Theessentialpartofastoneshieldisthebreastguard,whichmaybeassociatedwiththeshoulderguards, thebackguardandthebicepsguards. Whenthestoneshieldsa
26、reintheformofarticulateassembliesthepartscanbeheldtogetherbydiversified joiningdevicesandcanbemadeoutofmixedsoft/hardorhardmaterials(shells).Inthelattercasetheyare fittedwithsuitablepaddingontheinnersurface,andtheiredgesareroundedtoavoidbruisingoftheskin. Licensed Copy: Wang Bin, ISO/Exchange China
27、Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEN14021:2003(E) 5 1Scope ThisEuropeanStandardspecifiesrequirementsandtestmethodsforthestoneshieldstobewornbyyouths andadultsofeithersextoprovidelimitedprotectionagainstloftedstonesanddebriswhileridingmotorcycles inmotocrossandoth
28、eroffroadactivitiesondirtroads. HencethisEuropeanStandardcontainsgeneralandperformancerequirementsforthematerialsutilisedand requirementsforsizes,shapes,markingandassemblymethodology. ThisEuropeanStandardisnotapplicabletostoneshieldforchildrenandforpeoplewithchestgirthbelow 75cm. 2 Normativereferenc
29、es ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted below.Inthecaseofdatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublications applytothisEuropeanSta
30、ndardonlywhenincorporatedintoitbyamendmentorrevision.Inthecaseof undatedreferencesthelatesteditionofthepublicationsreferredtoapply(includingamendments). EN340, ProtectiveclothingGeneralrequirements. ISO6487, RoadvehiclesMeasurementtechniquesinimpacttestsInstrumentation 3Definition 3.1 stoneshield pr
31、oductdesignedtobewornunderoroverouterclothing(butnotwithoutunderclothingandnotdirectlyonthe skin)andtoprovideprotectionfromloftedstonesanddebris. Theproductconsistsmainlyofabreastguard,whichmaybeassociatedwithorincludeshoulderguardsand otherguardssuchasbicepsguardsandabackguard(seeFigure1). 4Require
32、ments 4.1Construction Thestoneshieldshallbefittedwithtighteningorrestrainingdevicesorclosurestoallowthemtobedonned tighttothebodyassuringfreedomofmovements.Checkaccordingto6.5. 4.2Minimumprotectedareas 4.2.1General TheminimumprotectedareasofthebreastguardisspecifiedinTable1andin4.2.2. 4.2.3to4.2.5ar
33、eapplicablewhenotherpartsarepresent. 4.2.2 Breastguard Thebreastguardshallcovertheanteriorportionoftheribcageincludingthesternum. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEN14021:2003(E) 6 4.2.3Shoulder guards Theshoulderguard
34、sshallcoverthetopportionoftheshoulders. 4.2.4Biceps guards Bicepsguardsshallcovertheouterportionoftheupperarms. 4.2.5Back Guard ThebackguardshallcoversthescapulaeandaportionofthespinewithalengthcorrespondingofatleastC ofFigure2. 4.3Sizing Stoneshieldsshallbemarkedonthebreastguardwiththeirsizeaccordi
35、ngtoEN340exceptthatthe referencedimensionisonlythechestgirthmeasuredonapersonintheuprightpositionandbreathing normallywiththetapemeasurepassedoverthescapulaeunderthearmpitsandacrossthechestandback. Table1givestheminimumdimensionsofabreastguardsuitedforapersonwithachestgirthof105cm. Othersizeswillbes
36、caledtothesameproportions. Table1Dimensions Dimensions ABC Chestgirth(%) 33 19 22 Exampleofchestgirthof 105cm 35cm 22cm 23cm Thedimensions A, Band CaredefinedbelowbyreferencetoFigure2anddonotincludethepadding. Atheminimumdistancebetweentheloweredgeofthebreastguardandthemidpointofthesubjectsshoulder.
37、 Btheminimumbreadthofthebreastguardatanypoint. Ctheminimumlengthbetweenthemidpointontheupperedgeandthemidpointontheloweredgeofthebreast guard. 4.4Surfacecontinuity Thecomponentsofthestoneshieldsshallbeconstructedsothattherearenogapsthatadmitacircularprobe asdescribedin5.2. 4.5Attachments Allrigidatt
38、achmentsandstrapsaswellasfastenersandadjustersshallbeabletowithstandapullingforceof 120Nwithoutfailure,whentestedaccordingto6.4. 4.6Ergonomicrequirements Stoneshieldsshallbedesignedtominimisethediscomfortofwearingthemandshallnotundulyrestrictarm movements. Roughedgesshallnotbepresentontheshells. Lic
39、ensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 30 March 2004, Uncontrolled Copy, (c) BSIEN14021:2003(E) 7 Apaddingelementshallbeappliedtoeachshellonanydesiredareaandcanbesewn,glued,rivetedorelse ontheinnersurfacesprovideditisnoteasilyremovedwherethepaddingislocatedontheedgesi
40、tshall extendoutwardnotlessthan0,5cmandshallhaveminimumthicknessof0,5cm.Figure3showsanexample ofapplication. Examinationshallbemadeaccordingto6.2and6.5. 4.7Impactperformancerequirements Theaveragepeakforcerecordedbelowtheanvilinthetestsdescribedin6.6shallbebelow27kN.Noshell shallcrackorshatterduring
41、thetest. 5 Testequipment 5.1Apparatus 5.1.1Dropping apparatus Theapparatusshallbesuchthatamass(hemisphericalimpactor)maybereleasedinordertodropalonga guidedverticalpathontothesampleplacedonatestanvil.Thecentreofthemassofthehemispherical impactorshalllieoverthecentreofthetestanvil. NOTE Theequipmentf
42、ortestingstoneshieldscouldbecommontoanumberofEuropeanStandardssuchas EN16211. 5.1.2Hemispherical impactor Thehemisphericalimpactor,withanendradiusof(12,5 0,1)mm,isattachedtoadroppingblocksothatit hasatotalmassof(1000 10)ganditskineticenergyonimpactshallbe(10 1)J. 5.1.3Anvil Theanvilshallbemadeofpoli
43、shedsteelwiththefollowingdimensions l 1 equalto(190 20)mm, l 2 equalto (100 2)mmand r 1 equalto(150 5)mm,andtheanvilshallbesurroundedbya“guardring”.Theguard ringshallhaveaninternaldiameter l 3 of(120 2)mm,awallthickness l 4 of(20 1)mm.Theguardringshall besolidlymountedtothebasearoundthepiezoelectric
44、loadcellorforcetransducer.Thetopoftheguardring shallbe(10 0,5)mmabovethecentreofthetopoftheanvil.Figure4illustratesthedesignoftheapparatus. Theanvilshallbeattachedthroughapiezoelectricloadcellorequivalentforcetransducertoamassofat least1000kg.Theloadcellorforcetransducershallbepreloadedtothemanufacturersinstructions. 5.1.4 Forcemeasurementinstrumentation Theanvilshallbemountedsothatduringimpacttesting
