CN111630288A - 包括用于轴承的轴向限位壳体的混合动力模块 - Google Patents

包括用于轴承的轴向限位壳体的混合动力模块 Download PDF

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CN111630288A
CN111630288A CN201980009167.5A CN201980009167A CN111630288A CN 111630288 A CN111630288 A CN 111630288A CN 201980009167 A CN201980009167 A CN 201980009167A CN 111630288 A CN111630288 A CN 111630288A
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CN111630288B (zh
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A·萨蒂亚西兰
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Schaeffler Technologies AG and Co KG
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B60K6/405—Housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft

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Abstract

用于混合动力模块的驱动单元包括壳体组件和电动机，所述电动机包括定子和转子。定子固定至壳体组件。驱动单元还包括构造成用于将转子可转动地连接至内燃发动机的组件。所述组件包括构造成用于连接至内燃发动机的轴、位于所述轴上的后轴承以及位于后轴承的外座圈上的轴承壳体。所述轴承壳体轴向地邻接后轴承，使得后轴承限制轴承壳体的向后的轴向移动。

Description

包括用于轴承的轴向限位壳体的混合动力模块
技术领域
本公开总体上涉及轴承的轴向限位，更具体地涉及混合动力模块中的轴承的轴向限位。
背景技术
美国公开No.2015/0175154、美国公开No.2016/0105060、美国申请No.15/801,845和美国申请No.15/844,238公开了具有扭矩变换器的模块化混合动力变速器。
发明内容
本发明提供了一种用于混合动力模块的驱动单元。所述驱动单元包括壳体组件和电动机，所述电动机包括定子和转子。定子固定至壳体组件。驱动单元还包括构造成用于将转子可转动地连接至内燃发动机的组件。所述组件包括构造成用于连接至内燃发动机的轴。所述组件包括位于轴上的后轴承和位于所述后轴承的外座圈上的轴承壳体。所述轴承壳体轴向地邻接后轴承，使得后轴承限制轴承壳体的向后的轴向移动。
根据驱动单元的实施方式，轴承壳体可包括径向延伸壁，所述径向延伸壁轴向地邻接后轴承的外座圈。轴可包括轴向地与后轴承的内座圈邻接的肩部。后轴承可轴向地夹在肩部与径向延伸壁之间。壳体组件可包括轴向延伸的突出部，所述突出部包括限定壳体组件的内周的内周向表面。轴承壳体径向地邻接轴向延伸的突出部的自由端处的轴向延伸表面。电动机可包括转子凸缘，壳体组件可包括位于突出部的外周向表面上的接触转子凸缘的转子轴承。轴承壳体可包括径向外部段，所述径向外部段布置成用于限制转子轴承的内座圈的向后的轴向移动。分离组件可包括由轴承壳体的径向外部段支撑的轴向弹性件。轴承壳体的径向外部段使转子轴承的内座圈抵靠着突出部的外周向表面上的肩部轴向地预加载。组件可以是构造成用于选择性地将转子可转动地连接至内燃发动机以及使转子与内燃发动机分离的分离组件。所述分离组件可进一步包括反作用板、至少一个离合器板和用于迫使所述至少一个离合器板抵靠反作用板的活塞。轴承壳体可在轴向上位于反作用板与突出部的自由端之间。前轴承可在径向上于突出部的内周向表面与轴的外周向表面之间位于轴上。前轴承和后轴承可以是环形接触轴承或深沟滚珠轴承。轴承壳体可轴向地邻接突出部的自由端，以限制后轴承的向前的轴向移动。
本发明还提供了一种混合动力模块，所述混合动力模块构造成用于布置在变速器上游和内燃发动机下游的扭矩路径中。混合动力模块包括驱动单元和固定至电动机的扭矩变换器。
本发明还提供了一种组装混合动力模块的方法。所述方法包括将后轴承和轴承壳体安装在轴上以形成组件。轴承壳体安装在后轴承的外座圈上。所述方法还包括通过将组件的输出连接至电动机的转子来将组件连接至电动机，以及将相连接的组件和电动机组装到壳体组件上使得轴承壳体轴向地邻接后轴承，从而后轴承限制轴承壳体的向后的轴向移动。
根据所述方法的实施例，所述方法可包括在将组件的输出连接至转子之后并且在将相连接的组件和电动机组装到壳体组件上之前，将转子凸缘不可相对转动地固定至转子。壳体组件可包括轴向延伸的突出部，所述突出部包括限定壳体组件的内周的内周向表面。轴承壳体可径向地邻接轴向延伸的突出部的自由端处的轴向延伸的表面。壳体组件可包括位于突出部的外周向表面上并接触转子凸缘的转子轴承。轴承壳体可包括径向外部段，所述径向外部段布置成用于限制转子轴承的内座圈的向后的轴向移动。轴承壳体可包括径向延伸壁，所述径向延伸壁轴向地邻接后轴承的外座圈。轴可包括肩部，将后轴承安装在轴上可包括将后轴承的内座圈轴向地推入肩部。所述方法可包括在将相连接的组件和电动机组装到壳体组件上之后，将前轴承在径向上于突出部的内周向表面与轴的外周向表面之间安装在轴上。这可包括在将组件连接至电动机之前将扭矩变换器固定至转子。
附图说明
下面参考以下附图描述本公开，附图中：
图1示出了根据本公开的一实施例的混合动力模块的径向剖视图；
图2a示出了图1所示的混合动力模块的一部分的放大的径向剖视图；
图2b示出了图1所示的混合动力模块的轴承壳体的后侧透视图；
图2c示出了图2b所示的轴承壳体的前侧透视图；
图2d示出了图2b所示的轴承壳体的前侧平面图；
图3示出了根据本公开的另一实施例的混合动力模块的径向剖视图；以及
图4示出了图3所示的混合动力模块的一部分的放大的径向剖视图。
具体实施方式
混合动力模块中的转子轴承可具有浮动装置，其中，朝向变速器的轴承移动不会被阻止。这意味着当有负载将转动组件推向变速箱时，转子轴承与壳体的交界面允许滑动，因此整个转动组件朝着变速箱移动，移动的量等于转子凸缘与分离组件流动坝之间的间隙。分离组件具有将其相对于壳体组件保持就位的最终组装卡环。该卡环在此防止转动组件朝变速器进一步移动。已经发现，存在例如“在TC中没有压力的情况下在坡道上启动车辆”的车辆状况，该车辆状况引入趋向于将转动组件推向变速器的负载。这导致叶轮轮毂与变速器前支承件之间产生干涉。
本公开提供了轴承的实施例，所述轴承具有承受组合的轴向以及径向负载的能力。轴承压入被称为轴承壳体的小铝片中，以形成轴承组件。该压成的轴承组件与轴和混合动力模块壳体紧密滑动配合，以便维持分离组件的对中功能。轴承内座圈推到分离轴肩部上，外座圈被按压到轴承壳体的壁上。轴承壳体具有径向延伸部，径向延伸部向上延伸并形成了用于大转子滚珠轴承的轴向限位特征。在组装过程中，轴承壳体组件滑到分离轴上，并对分离组件进行处理。然后将分离组件放入转动组件中，然后组装转子凸缘组件以及弹性件和卡环。然后，将该组合组件组装到壳体组件中，安装前轴轴承并安装下卡环。该构造明显减少了转动组件的游动量，使得当转动组件开始向变速器滑动时，它将滑动直到轴承碰到轴承壳体，然后将转动组件的负载经由分离轴和卡环引到壳体组件中。
图1示出了根据本公开的一个实施例的混合动力模块10的径向剖视图。模块10包括构造成用于附接至内燃发动机的混合动力驱动单元12和构造成用于附接至变速器输入轴的扭矩变换器14。混合动力驱动单元包括电动机16、分离组件18，该分离组件构造成用于选择性地使内燃发动机和壳体组件26连接和分离。混合动力驱动单元12以已知的方式经由分离组件18选择性地操作以从内燃发动机传递扭矩至扭矩变换器14、或经由电动机16直接驱动扭矩变换器14、或者经由电动机16和内燃发动机两者一起驱动扭矩变换器14。沿着这些线路，分离组件18包括轴20和发动机连接/分离离合器21，所述轴20构造成例如经由飞轮不可相对转动地连接至内燃发动机的曲轴。离合器21构造成用于选择性地将扭矩变换器14连接至轴20使得扭矩变换器14能够在具有或不具有电动机16的情况下由内燃发动机驱动，或者将扭矩变换器14与输入轴20分离使得扭矩变换器仅由电动机16驱动。
电动机16包括定子22和转子24，所述定子22在壳体组件26的轴向突出的变速器侧凸缘26a上固定至壳体组件26。壳体组件26还包括与凸缘26a相反的轴向突出的发动机侧凸缘26b。在将电流供给至定子22的线圈时，转子24以已知的方式绕着混合动力模块10的中心轴线CA转动，因为转子24包括多个永磁体区段24a，所述永磁体区段24a被线圈中的电流激励。在此使用的表述轴向、径向和周向相对于中心轴线CA使用。磁体区段24a在其内周上由转子承载毂28支撑。转子承载毂28包括支撑磁体区段24a的内周的圆筒形轴向延伸段28a和从轴向延伸段28a的端部径向向外突出的径向延伸段28b。扭矩变换器14通过穿过扭矩变换器14的盖31的多个紧固件29在转子承载毂28的径向延伸段28b处固定至混合动力驱动单元12。
离合器21包括多个离合器板30，所述离合器板30中的至少一些离合器板在其外径端部处通过形成在轴向延伸段28a的内周向表面上的花键32以可轴向滑动的方式被支撑。离合器板30中的至少一个在其内径端部处以可轴向滑动的方式被内部支撑件34支撑，该内部支撑件34通过铆钉固定至反作用板36，所述反作用板36不可相对转动地固定至轴20。离合器21还包括活塞38，所述活塞38可沿着轴20的外周轴向地滑动以基于活塞38的前侧和后侧上的流体压力差使离合器21接合和分离。当活塞38迫使离合器板30靠触在反作用板36上时，离合器21被接合并且来自轴20的扭矩通过离合器板30传递到转子承载毂28中，所述转子承载毂28然后将接收到的扭矩传递到阻尼组件14。活塞38通过由支撑板42支撑的弹性件40被轴向地保持远离离合器板30。离合器21还包括移离(liftoff)控制板43，所述移离控制板43限制活塞38相对于离合板30的移离。
壳体26包括限定其内周的轴向延伸的突出部44，所述突出部44于离合器21的发动机侧设置在轴20的径向外侧。突出部44轴向地远离壳体26的沿电动机16径向地延伸的径向延伸部26c并且轴向地朝向扭矩变换器14延伸，而且在形成于突出部44的外周向表面上的肩部44a上支撑转子轴承46，所述转子轴承在该实施例中是在突出部44上可转动地支撑转子凸缘48的滚珠轴承。滚珠轴承46的内座圈46a位于突出部44的外周向表面上，转子凸缘48从滚珠轴承46的外座圈46b的外周向表面延伸到转子承载毂28的轴向延伸段28a。转子凸缘48通过例如花键不可相对转动地固定在转子承载件28的轴向延伸段28a的内周向表面上，并且通过与轴向地固定至转子承载毂28的轴向延伸段28a的转子卡环48b邻接的转子弹性件48a在轴向上固定就位。分离组件18还包括轴向地位于转子凸缘48与反作用板36之间的空间中的流动坝49。所述流动坝49包括通过铆钉固定至反作用板36的径向外部49a和成角度的径向内部49b，所述径向内部49b相对于中心轴线CA以非垂直的角度径向向内且轴向远离反应板地延伸。
扭矩变换器14包括一起形成盖31的前盖31a和后盖31b，紧固件29轴向地穿过前盖31a的径向延伸段，所述径向延伸段径向向内延伸至与中心轴线CA相交。后盖31b包括叶轮52的叶轮壳50，所述叶轮52包括多个叶轮叶片54，所述叶轮叶片54由叶轮壳50的滚圆的叶片支撑部分50a支撑，所述叶片支撑部分50a成形为环形碗并且接触叶轮叶片54的后边缘。
扭矩变换器14还包括涡轮56，所述涡轮56构造成能够限定可轴向地朝向和远离叶轮壳50移动的活塞，使得涡轮56的接合段接合叶轮壳50的接合段，从而形成锁止离合器。涡轮56包括支撑多个涡轮叶片60的涡轮壳58。扭矩变换器14还包括轴向地位于涡轮56与叶轮52之间的定子62，以在流体到达叶轮叶片54之前重新引导从涡轮叶片60流出的流体以提高扭矩变换器14的效率。扭矩变换器14还包括固定至涡轮壳58的阻尼组件64。阻尼组件64构造成用于接收来自涡轮壳58的扭矩并将扭矩传递至变速器输入轴。为了将扭矩传递至变速器输入轴，阻尼组件64包括支撑毂66，所述支撑毂66包括花键式内周向表面，以用于不可相对转动地连接至变速器输入轴的外周向表面。
摩擦材料68结合到涡轮壳58的外径向延伸部70的径向延伸的面向叶轮的表面上从而接合叶轮壳50的径向延伸壁72，所述外径向延伸部70位于叶片60的径向外侧并形成涡轮56的接合段，所述径向延伸壁72位于叶片54的径向外侧并且形成叶轮壳50的接合段。在另外的实施例中，相对于结合到外径向延伸部70而言替代地或附加地，摩擦材料68可结合到径向延伸壁72的径向延伸的面向涡轮的表面或位于径向延伸部70与径向延伸壁72之间的一个或多于一个附加的盘。无论摩擦材料68是否结合到外径向延伸部70、径向延伸壁72或者一个或多于一个附加的盘，摩擦材料68都轴向地设置在延伸部70与壁72之间，以选择性地使涡轮活塞56的接合段与叶轮叶壳50的接合段不可相对转动地接合。扭矩变换器14通过前盖31a处的紧固件29从混合动力驱动单元12接收扭矩输入，所述扭矩被传递到叶轮52。当锁止离合器分离时，叶轮52经由从叶轮叶片54到涡轮叶片60的流体流驱动涡轮56，或者当锁止离合器接合时，叶轮52经由摩擦材料68驱动涡轮56。涡轮56然后驱动阻尼组件64，所述阻尼组件64进而驱动变速器输入轴。
回到分离组件18，其进一步包括发动机侧或前滚珠轴承74和扭矩变换器侧或后滚珠轴承76，以用于支撑轴20以相对于壳体组件26转动。如图1所示，两个滚珠轴承74、76均形成为深沟滚珠轴承。深沟滚珠轴承在当前情况下是有利的，原因至少在于它们被构造成能够吸收轴向和径向载荷。相比之下，美国公开No.2016/0105060公开了使用仅吸收径向载荷的滚针轴承。前滚珠轴承74包括径向地且轴向地邻接形成在突出部44的内周向表面中的台阶44b的外座圈74a和径向地且轴向地邻接形成在轴20的外周向表面中的肩部20a的内座圈74b。前滚珠轴承74在轴20上通过轴向地与内座圈74b的前径向延伸表面邻接的卡环78a在轴向上保持就位，并且在突出部44上通过轴向地与外座圈74a的前径向延伸表面邻接的卡环78b在轴向上保持就位。轴承壳体80在径向和轴向上设置在突出部44与轴20之间。
图2a示出了后滚珠轴承76和轴承壳体80的放大的径向剖视图，图2b至图2d示出了轴承壳体80的不同视图。后滚珠轴承76包括径向地且轴向地邻接轴承壳体80的外座圈76a和径向地且轴向地邻接形成在轴20的外周向表面中的肩部20b的内座圈76b。在外座圈76a与内座圈76b之间设有呈滚珠76c形式的滚动件。
轴承壳体80形成为包括用于轴向地邻接外座圈76a和突出部44的径向内部径向延伸壁82的环。在一个优选实施例中，轴承壳体由单个铝件形成。更具体地，突出部44包括形成在其轴向后端部处的台阶84，壁82的前径向延伸表面82a邻接台阶84的径向延伸表面84a，而壁82的后径向延伸表面82b邻接外座圈76a的径向延伸表面。轴承壳体80还包括沿着外座圈76a的外周向表面轴向地远离壁82延伸的轴向延伸壁86。壁86的内周向表面86a接触外座圈76a的外周向表面，壁86的外周向表面86b接触台阶84的轴向延伸表面84b，使得轴承壳体80将轴承76在轴20上径向地保持就位。轴承壳体80还包括从壁86径向向外延伸的径向外部段88。径向外部段88包括布置成能够使轴承46的内座圈46b被轴向地限位的前径向延伸表面88a以及面向坝49的径向内部部分49b和反作用板36的后径向延伸表面88b。由于轴20、卡环78a以及轴承本身的公差，所以在表面88a与转子轴承内座圈46a之间在轴向上存在小间隙，以用于组装。该间隙成为由电动机16和扭矩变换器14形成的转动组件移动的新的容许游隙。外部段88从径向观察具有楔形横截面，使得表面88b在径向和轴向上延伸，并且相对于中心轴线CA(图1)以非垂直的角度布置。表面88b与表面88a形成锐角。
一起参照图1和2a，组装驱动单元12的方法涉及将后轴承76压入轴承壳体80中以形成轴承组件，然后将轴承组件滑到轴20的前轴向端部20c上，以及将后轴承76推到轴20的肩部20b上。在分离组件21的组装之前、之后或同时，电动机16和扭矩变换器14经由紧固件29连接在一起以形成转动组件。在此通过将离合器板30嵌入转子承载件28的花键32上，将分离组件21的输出连接至转动组件的转子18。接下来，转子凸缘48经由弹性件48a和卡环48b固定至转子承载件28上。然后将得到的组件组装到壳体组件26中，并将前轴承74安装到轴20上，然后将卡环78a安装在轴20上。该构造明显减小了转动组件的游隙。因此，当转动组件开始向变速器滑动时，转动组件将滑动直到轴承46碰到轴承壳体80，然后转动组件的负载经由轴20和卡环78a引到壳体组件26中。
图3示出了根据另一实施例的混合动力模块110的径向剖视图。除了滚动轴承74、76相应地由环形接触轴承174、176代替、轴承壳体80由轴承壳体180和轴向弹性件181代替以及突出部44由具有稍微改变的后轴向端部的突出部144代替之外，混合动力模块110与混合动力模块10以相同的方式构造。图4示出了混合动力模块110的包括与图1和图2a的实施例不同的部件的一部分的放大剖视图。
前环形接触轴承174包括径向地且轴向地与突出部144的台阶144a邻接的外座圈174a和径向地且轴向地与轴20的肩部20a邻接的内座圈174b，前滚珠轴承174在轴20上通过轴向地与内座圈174b的前径向延伸表面邻接的卡环78a在轴向上保持就位，并在突出部144上通过轴向地与外座圈174a的前径向延伸表面邻接的卡环78b保持就位。
后滚珠轴承176包括径向地且轴向地邻接的轴承壳体180的外座圈176a和径向地且轴向地邻接轴20的肩部20b的内座圈176b。呈滚珠176c形式的滚动件设置在外座圈176a与内座圈176b之间。
轴承壳体180形成为包括用于轴向地邻接外座圈176a的径向内部径向延伸壁182的环。在一优选实施例中，轴承壳体180由单个铝件形成。更具体地，壁182的后径向延伸表面182a邻接外座圈176a的径向延伸表面。在图3和图4的实施例中，外座圈176a包括轴向地与壁182的径向延伸表面182a的邻接的前侧径向凸缘176d，内座圈176b包括轴向地邻接肩部20b的后侧径向凸缘176e，使得后轴承176轴向地夹在壁182与肩20b之间。
轴承壳体180还包括沿着外座圈176a的外周向表面轴向地远离壁182延伸的轴向延伸壁186。壁186的内周向表面186a接触外座圈176a的外周向表面，壁186的外周向表面186b接触突出部144的形成在突出部144的后轴向端部处的台阶184的轴向延伸表面184a，使得轴承壳体180将轴承176在轴20上径向地保持就位。轴承壳体180还包括从壁186径向向外延伸的径向外部段188。径向外部段188在其前侧上包括构造成用于支撑轴向弹性件181的台阶188a。轴承壳体180将轴向弹性件181抵靠着轴承46的内座圈46b的后侧径向延伸表面预加载，以使轴承46在轴向上被保持就位。轴向弹性件181可以是波形弹簧或膜片弹簧。径向外部段188进一步包括面向反作用板36的后径向延伸表面188b，该表面188b在径向和轴向上延伸并且相对于中心轴线CA(图3)以非垂直的角度布置。混合动力模块110以与混合动力模块10相同的方式组装。
弹性件181是设计为具有足够的刚度的中等比率弹性件，使得其在转动组件重量的2-3g时不会偏转，以便在坡度条件下启动车辆。由此，在相关条件下，弹性件181使转子轴承46保持被压靠在壳体组件26上，从而使转动组件不打滑。转动组件的组装涉及以足够的力拉动轴20以压缩弹性件181并安装卡环78a。
在前文的说明中，参照特定的示例性实施例及其示例描述了本发明。然而，显而易见的是，可以对其进行各种修改和改变，而不脱离所附权利要求书所阐述的本发明的更广泛的主旨和范围。因此，说明书和附图应被理解为说明性的而非限制性的。
附图标记列表
CA 中心轴线
10 混合动力模块
12 混合动力驱动单元
14 扭矩变换器
16 电动机
18 发动机连接/分离组件
20 轴
21 离合器
22 定子
24 转子
24a 磁体区段
26 壳体组件
26a 轴向突出的变速箱侧凸缘
26b 轴向突出的发动机侧凸缘
26c 径向延伸段
28 转子承载毂
28a 圆筒形轴向延伸段
28b 径向延伸段
29 紧固件
30 离合器板
31 盖
31a 前盖
31b 后盖
32 花键
34 内支撑件
36 反作用板
38 活塞
40 弹性件
42 支撑板
43 移离控制板
44 壳体突出部
46 转子轴承
46a 内座圈
46b 外座圈
48 转子凸缘
48a 转子弹性件
48b 卡环
49 流动坝
50 叶轮壳
50a 滚圆的叶片支撑部分
52 叶轮
54 叶轮叶片
56 涡轮
58 涡轮壳
60 涡轮叶片
62 定子
64 阻尼组件
66 支撑毂
68 摩擦材料
70 外径向延伸部
72 径向延伸壁
74 前滚珠轴承
74a 内座圈
74b 外座圈
76 后滚珠轴承
76a 外座圈
76b 内座圈
76c 滚珠
78a 卡环
78b 卡环
80 轴承壳体
82 径向延伸壁
82a 前径向延伸表面
82b 后径向延伸表面
84 台阶
84a 径向延伸表面
84b 轴向延伸表面
86 轴向延伸壁
86a 内周向表面
86b 外周向表面
88 径向外部段
88a 前径向延伸表面
88b 后径向延伸表面
110 混合动力模块
144 突出部
144a 台阶
174 前环形接触轴承
174a 内座圈
174b 外座圈
176 后环形接触轴承
176a 外座圈
176b 内座圈
176c 滚珠
176d 前侧径向凸缘
176e 后侧径向凸缘
180 轴承壳体
181 轴向弹性件
182 径向延伸壁
182a 后径向延伸表面
184 台阶
184a 轴向延伸表面
186 轴向延伸壁
186a 内周向表面
186b 外周向表面
188 径向外部段
188a 台阶
188b 后径向延伸表面

Claims (10)

1.一种用于混合动力模块的驱动单元，所述驱动单元包括：
壳体组件；
电动机，其包括定子和转子，所述定子固定至壳体组件；
构造成用于将转子可转动地连接至内燃发动机的组件，所述组件包括构造成用于连接至内燃发动机的轴，组件包括位于所述轴上的后轴承和位于后轴承的外座圈上的轴承壳体，所述轴承壳体轴向地邻接后轴承，使得后轴承限制轴承壳体的向后的轴向移动。
2.根据权利要求1所述的驱动单元，其中，轴承壳体包括轴向地与后轴承的外座圈邻接的径向延伸壁。
3.根据权利要求2所述的驱动单元，其中，轴包括轴向地与后轴承的内座圈邻接的肩部，后轴承轴向地夹在所述肩部与径向延伸壁之间。
4.根据权利要求1所述的驱动单元，其中，壳体组件包括轴向延伸的突出部，所述突出部包括限定壳体组件的内周的内周向表面，轴承壳体径向地邻接轴向延伸的突出部的自由端处的轴向延伸表面，电动机包括转子凸缘，壳体组件包括位于突出部的外周向表面上的与转子凸缘相接触的转子轴承，轴承壳体包括布置成用于限制转子轴承的内座圈的向后的轴向移动的径向外部段。
5.根据权利要求4所述的驱动单元，其中，组件还包括由轴承壳体的径向外部段支撑的轴向弹性件，轴承壳体的径向外部段使转子轴承的内座圈抵靠着位于突出部的外周向表面上的肩部轴向地预加载。
6.根据权利要求4所述的驱动单元，其中，组件是构造成用于选择性地使转子可转动地连接至内燃发动机以及使转子与内燃发动机分离的分离组件，分离组件还包括反作用板、至少一个离合器板和用于迫使所述至少一个离合器板抵靠反作用板的活塞，轴承壳体在轴向上位于反作用板与突出部的自由端之间。
7.根据权利要求4所述的驱动单元，其中，所述驱动单元还包括位于轴上的径向地位于突出部的内周向表面与轴的外周向表面之间的前轴承。
8.一种组装混合动力模块的方法，所述方法包括：
将后轴承和轴承壳体安装在轴上以形成组件，所述轴承壳体安装在后轴承的外座圈上；
通过将组件的输出连接至电动机的转子，将组件连接至电动机；
将相连接的组件和电动机组装到壳体组件上，使得轴承壳体轴向地邻接后轴承，从而后轴承限制轴承壳体的向后的轴向移动。
9.根据权利要求8所述的方法，其中，所述方法还包括在将所述组件的输出连接至转子之后并且在将相连接的组件和电动机组装到壳体组件上之前，将转子凸缘不可相对转动地固定至转子。
10.根据权利要求9所述的方法，其中，所述壳体组件包括轴向地延伸的突出部，所述突出部包括限定壳体组件的内周的内周向表面，轴承壳体径向地邻接轴向延伸的突出部的自由端处的轴向延伸表面，其中，壳体组件包括位于突出部的外周向表面上并接触转子凸缘的转子轴承，轴承壳体包括径向外部段，所述径向外部段布置成用于限制转子轴承的内座圈的向后的轴向移动。
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