汽车天窗的整体结构设计学士学位

汽车天窗的整体结构设计摘要汽车天窗作为汽车行驶时的地唤起设备，已经逐渐成为各个汽车厂家生产轿车的标准配置。在汽车天窗市场竞争中电动汽车天窗具有很强的优势，如结构简单、使用方便、可靠性高、具有很好的市场潜力等。因此选择设计电动式天窗具有良好的市场前景，也可使整车在汽车竞争白热化的今天占领了更大份额的市场。本次设计首先了解了天窗的作用、种类、特点和天窗各种零部件执行标准。然后，对天窗的密封排水方式、性能要求、也天窗对风噪声的影响做出了说明和分析。在掌握天窗的工作原理后在天窗设计部分，依据了蜗轮蜗杆减速器的原理设计了电动机换向减速传动机构，结合天窗的结构性能对天窗进行了设计与强度校核，对动向蜗轮传动杆的主要参数和尺寸分析，选择传动材料和类型，按蜗轮齿面接触疲劳强度计算校核蜗轮齿根疲劳强度，对蜗杆蜗轮各部分尺寸计算，天窗电机最终动力输出选择。最后，分析并绘制了汽车天窗滑动机构、连接机构、驱动机构的CAD零件图和装配图，同时也对车顶开关的工作过程进行了简要分析。关键词：汽车天窗；换向减速机构；滑动机构；强度校核TheOverallStructureDesignofAutomobileSunroofsAbstractAstheventilationdevicewhendrivingacar,sunroofshavegraduallybecomethestandardequipmentfornearlyeverycarmanufacture.Inthemarketcompetitionforsunroofs,electriconesenjoygreatpopularityforitssimplestructure,easyhandling,highreliabilityandmarketpotential,etc.Therefore,choosingtodesignelectricsunroofhasverygoodmarketprospect,makingthewholecaroccupymoremarketshareintheenormouslyfiercecompetitionofautomobile.Thedesignofthethoughtsandideasfirstunderstandtheskylight,types,characteristicsandvariouspartsoftheimplementationofstandards.Thenmakeadescriptionandanalysisoftheperformanceofthesealingdrainageway,skylightrequirementsinfluenceonwindnoise.Theworkingprincipleofskylightskylightdesignmasterinpart,onthebasisoftheprincipleofthewormreducerdesignthemotorreversingspeedreducer,combinedwiththestructurepropertiesofskylightandrequirementstotheroofforthedesignandstrengthcheck,themainanalysisofthetrendofwormgeardriverodparametersandsize,selectgearmaterialsandtypes,accordingtotheturbinegearsurfacecontactfatiguestrengthcalculation,checkingthefatiguestrengthcalculationofthewormandwormwheelwormgeartoothroot,thesizeofeachpartoftheroof,andclickonthefinalpoweroutputselection.Finally,analysisanddrawacarsunroofslidingmechanism,connectingmechanism,drivingmechanismoftheCADpartdrawingsandassemblydrawings,alsomakesabriefanalysisontheworkingprocessoftheswitchforroof.KeyWords:sunroof;reversingdecelerationstructure;slidingmechanism;strengthcheck目录摘要......................................................................................................................IAbstract...............................................................................................................II第1章绪论................................................................................................11.1课题研究的目的和意义...........................................................................11.2汽车天窗的国内外发展状况...................................................................21.3研究内容与方法.......................................................................................4第2章天窗结构及性能要求............................................................................62.1天窗工作原理...........................................................................................62.2汽车天窗的作用.......................................................................................62.3天窗的种类及特点...................................................................................72.3.1汽车天窗种类....................................................................................72.3.2汽车天窗特点及各部件执行标准....................................................72.4天窗的结构型式.......................................................................................92.4.1天窗的结构........................................................................................92.4.2天窗的密封（排水）方式..............................................................102.5天窗的性能要求.....................................................................................112.5.1安全性..............................................................................................112.5.2性能要求..........................................................................................122.5.3天窗系统对风噪的影响....................................错误!未定义书签。2.6本章小结...................................................................错误!未定义书签。第3章汽车天窗设计........................................................错误!未定义书签。3.1天窗结构和工作原理设计.......................................错误!未定义书签。3.1.1滑动机构............................................................错误!未定义书签。3.1.2连接机构............................................................错误!未定义书签。3.2汽车天窗动力机构...................................................错误!未定义书签。3.2.1驱动机构............................................................错误!未定义书签。3.2.2车顶开关............................................................错误!未定义书签。3.3本章小结...................................................................错误!未定义书签。第4章天窗行进的相关计算............................................错误!未定义书签。4.1动机换向蜗轮蜗杆主要参数和几何尺寸...............错误!未定义书签。4.1.1选择传动的类型和材料....................................错误!未定义书签。4.1.2按蜗轮齿面接触疲劳强度计算........................错误!未定义书签。4.1.3校核蜗轮齿根弯曲疲劳强度............................错误!未定义书签。4.1.4蜗杆、蜗轮各部分尺寸计算............................错误!未定义书签。4.1.5天窗电机最终动力输出齿轮选择....................错误!未定义书签。4.2本章小结...................................................................错误!未定义书签。结论..............................................................................错误!未定义书签。参考文献................