saej1163v002

SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2006SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:877-606-7323(insideUSAandCanada)Tel:724-776-4970(outsideUSA)Fax:724-776-0790Email:CustomerService@sae.orgSAEWEBADDRESS:http://www.sae.orgSURFACEVEHICLESTANDARDJ1163REAF.DEC2006Issued1976-10Reaffirmed2006-12SupersedingJ1163AUG1997DeterminingSeatIndexPointThisSAEStandardistechnicallyequivalenttoISO5353,andusesitastheguide,exceptwithoutitsH-Pointannex.1.Scope—ThisSAEStandardspecifiesamethodandthedeviceforuseindeterminingthepositionoftheSeatIndexPoint(SIP)foranykindofseat.1.1Purpose—ThisSAEdocumentprovidesauniformmethodfordefiningthelocationoftheSIPinrelationtosomefixingpointontheseat.1.2FieldofApplication—ThisSAEdocumentisapplicabletoseatsdesignedforoff-roadself-propelledmachines.TheSIPcanbedeterminedonaseatbyitselforwiththeseatlocatedinitsoperatingenvironmentonthemachine.TheSIPisacharacteristicoftheseat;therefore,itcanbespecifiedbytheseatmanufacturer.1.3Rationale—ThisdocumenthasbeenreaffirmedtocomplywiththeSAE5-YearReviewpolicy.2.References2.1ApplicablePublication—Thefollowingpublicationformsapartofthespecificationtotheextentspecifiedherein.UnlessotherwiseindicatedthelastestrevisionofSAEpublicationsshallapply.2.1.1ISOPUBLICATION—AvailablefromANSI,25West43rdStreet,NewYork,NY10036-8002,Tel:212-642-4900,www.ansi.org.ISO5353:1978—Earth-movingmachinery,andtractorsandmachineryforagricultureandforestry—SeatIndexPoint.Amendment0:1981.Amendment02:1984.2.2RelatedPublications—Thefollowingpublicationsareprovidedforinformationpurposesonlyandarenotarequiredpartofthisdocument.2.2.1SAEPUBLICATIONS—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001,Tel:877-606-7323(insideUSAandCanada)or724-776-4970(outsideUSA),www.sae.org.SAEJ826MAY87—DevicesforUseinDefiningandMeasuringVehicleSeatingAccommodationsSAEJ899DEC88—Operator'sSeatDimensionsforOff-RoadSelf-PropelledWorkMachinesSAEJ1163ReaffirmedDEC2006-2-2.2.2ISOPUBLICATIONS—AvailablefromANSI,25West43rdStreet,NewYork,NY10036-8002,Tel:212-642-4900,www.ansi.org.ISO3462:1980—Tractorsandmachineryforagricultureandforestry—Seatreferencepoint—MethodofdeterminationISO/TC127/SC2(Italy—22)—CorrelationbetweentheseatindexpointandtheH-point—October19752.2.3BRITISHSTANDARDS—AvailablefromBritishStandardsInstitute,CustomerServices,389ChiswickHighRoad,LondonW44AL,UnitedKingdom,Tel:+44-0-20-8996-9001,www.bsi-global.com.BSIDocument75/13289—SeatIndexPoint—18December19753.Definitions3.1SeatIndexPoint(SIP)—ThepointonthecentralverticalplaneasdeterminedbythedeviceshowninFigure1wheninstalledintheseatasspecifiedin4.3.TheSIPasestablishedanddefinedbythisSAEdocumentcanbeconsidered,foroperatorworkplacedesignpurposes,tobeequivalenttotheintersectiononthecentralverticalplanethroughtheseatcenterlineofthetheoreticalpivotaxisbetweenahumantorsoandthighs.FIGURE1—SEATINDEXPOINTDEVICESAEJ1163ReaffirmedDEC2006-3-3.2FixingPoint—ThefixingpointisapointthatisspecifiedbythemanufacturertowhichtheSIPisreferenced.SeeFigure2foranexample.FIGURE2—SEATWITHSIPDEVICE3.3MultipleFunctionSeats—Someseatsaredesignedtolocateandfixanoperatortoperformmorethanonefunctionwithagivenmachine,e.g.,Backhoe/Loader,where,facinginonedirectiontheloadingfunctionisperformedandinarotatedposition,thebackhoefunctionisperformed.4.TechnicalRequirements4.1DeviceforDeterminingofSeatIndexPoint(SIP)—ThedevicefordeterminingtheSIPshallcomplywithFigure1.Themassofthedeviceshallbe6kg±1kg.Theworksurfacesofthedeviceshallbeofhardwoodthathasbeensandedwith200orfinergritpaperortheequivalentandpolishedtoprovideminimumfrictionwiththemuslinclothmentionedin4.3.1.3.4.2AdjustmentofSeatWhenDeterminingtheSeatIndexPoint—Whentherelevantadjustmentsareapartoftheseatanditssuspension,theseatshallbeadjustedaccordingtothefollowingsequentialstepsbeforedeterminingtheSIP:4.2.1SEATADJUSTMENT—Allfore,aft,vertical,andangularadjustmentsshallbeplacedintheircenterposition.Whennocenterpositionispossible,thenearestadjustmentthatwillmovetheSIPdeviceupwardorrearwardofcentershallbeused.SAEJ1163ReaffirmedDEC2006-4-4.2.2SUSPENSIONSYSTEM—Blockthesuspensionsystemaccordingtothemanufacturer'sinstruction.Ifsuchinstructionisnotprovided,blockthesuspensionsystematthemidpointofitsoscillationrange.4.3MethodofDeterminingtheSeatIndexPoint(SIP)—TheSIPshallbedeterminedbyusingthedeviceillustratedinFigure1andapplyingthefollowingprocedures:4.3.1SEATCUSHIONPREPARATION—Allowsufficienttimetoinsuretheseatreachesaroomtemperatureof20°C±2°Cbeforestartingthemeasurementprocedure.4.3.1.1Theseatshallbeonalevelsurface.4.3.1.2A68to79kgpersonshallsitintheseattwicefor1minintervalstoflextheseatandbackcushions.Theseatshouldremainunloadedforaminimumperiodof30minbeforestartingthemeasurementprocedure.4.3.1.3Covertheseatwithasinglelayerofmuslinclothofsufficientsizetopreventdirectcontactandminimizefrictionbetweenthecushionsurfacesandthemeasurementdevice.Caremustbetakentopreventtheclothfrominfluencingthepositioningofthedevice.4.3.2DEVICEPLACEMENT—Placethedevice,withoutadditionalmasses,laterallycentralontheseatcushion,pushingagainstthebackcushion.SeeFigure2.4.3.2.1Addmassestobringthetotalmassofthedevicefrom6kg±1to26kg±1;theverticalforcecenteroftheaddedmassesshallbe40mminfrontoftheSIPmarkonthehorizontalsectionofthedevice.SeeFigure1.4.3.2.2Toobtainagoodfitbetweentheseatcushion,thebackcushion,andtheSIPmeasuringdevice,alternatinglyapplyandreleaseahorizontalandrearwardforceofapproximately100NatthelocationnotedinFigure1,androckthedevicefromsidetoside.4.3.2.3Addfurthermassestobringthetotalmassofthedevicefrom26kg±1kgto65kg±1kg.NOTE—A75kgoperatorapproximatesthe65kgweighteddeviceontheseat.4.3.2.4Repeatthealternateloading,releasing,andtherockingofthedeviceasdefinedin4.3.2.2,checkingtomakesurethedeviceislaterallycentralandlevelontheseat.4.3.3MEASUREMENT—MeasurementsshallbemadeoneachsideoftheSIPmeasuringdeviceatpointsequaldistancefromthecentralverticalplane.SeeFigure2.Averagethevalues.Recordwithin±1mmthecoordinatedimensionsoftheSIPfromthefixingpointontheseatassembly,seeFigure3,thatisdefinedbythemanufacturer.4.3.4MULTIPLEFUNCTIONSEATS—IfthelocationoftheSIPrelativetothefixingpointcannotbereadilycalculated,thenrepeat4.2and4.3foreachofthepositions.4.4Report—Thereportshallincludethefollowinginformation:a.ReferencetothisSAEdocument.b.AnytestconditionsoradjustmentsdifferentfromthosespecifiedinthisSAEdocumentshallbefullydescribed.c.AdrawingorsketchoftheseatassemblyshowingthecoordinatedimensionsbetweenthefixingpointandtheSIP.SeeFigure3foranexample.d.Descriptionoftheseatadjustmentrangesavailablerelevantto4.2.SAEJ1163ReaffirmedDEC2006-5-FIGURE3—SEATDIMENSIONSPREPAREDBYTHESAEHUMANFACTORSTECHNICALCOMMITTEESC4—OPERATORSEATINGANDRIDE