白车身开发-车门铰链

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1、车门工程开发:铰链对齐Candoorofyourcarresistverticalload?Basicstaticgeometryisasbelow.Underexternalload(F),forces(R1)and(R2)arereacted.Doorhingesettingbeginswiththisgeometrycheckup.Thesmalleristheratio(X/Y),themoreeffectiveistoreducestressandminimizedeflectionfrom

2、viewpointofforcecoupling.Buttherearealotofrestrictionsindoingengineeringfeasibilityuntildecisionofratio(X/Y).ThistopicistoexploreoptimizedratiowithcriticalquestionsIofferbelow.I'dliketorecommendyoukeeptheratiolessthan2.5Let’sseeanexampleofrealcarfeasibi

3、litystudyingcase.1.Whatisstandardviewtomeasuredimension‘X’and‘Y’?,2.Whereispositionofpoint‘a’?3.Whereispositionofpoint‘b’?4.Whereispositionofpoint‘c’?Answerto#1issideviewbasedonvehicle’sabsolutecoordinatesystem.Answerto#2isaintersectedpointasbelowwhendo

4、orislatchedtostriker.Answerto#3and#4isaintersectedpointbetweenplanarsurfaceofbodyplateandrotationaxis.Forupperhinge,topplanarsurfaceofbodyplateshallbeintersectedwithimplicitline(=axis)andbottomplanarsurfaceshallbeintersected.Smallerdimension“p”ismoreeff

5、ectivetoreduceswingarmofdooredgeandminimizeriskofhardcontactingwithA-pillarstructureordoorhingewhendoorisfullyopened(includingovertraveling).Meanwhile,smaller"p"canalsocausetroublessuchasnarrowerclearanceofhingetooldriveraccessandrestrictionofboltcommon

6、use.Canyouoptimize“p”,givenallfactorsabove?I’dliketorecommendyoubeginwith50mmonthis,butthevaluecouldbevariedundersuchconditionsashingeboltlength,hingetooldriversize,hingecommon-usestrategyandtotalthicknessofpanelstack-up.Indimension“K”,doorplatefootprin

7、treflectsamountofhingeREINF’sadjustmentinbothdirectionofcar-crossandup-down.(*partname“HingeREINF”iscalleddifferentfromeachcompany.Anchorplateisoftencalledtoo,insteadofhingeREINF.)Doorpartinggapandflushqualitycanbeadjustedphysicallybyseekingoptimizedwel

8、dpositionofhingeREINFinbody-assemblyshop.Andhinge’sclearancetoinnerpanelisalsorequired.Thosetwofactorsshallbeincorporatedinto“K” Canyouset“K”?Myrecommendationfor“K”istobeginwith4.5mmorlessinwhich2.5mmisforhingeREINFadjustmentand2