CN103906940B - 驱动力传递装置 - Google Patents

驱动力传递装置 Download PDF

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CN103906940B
CN103906940B CN201280053109.0A CN201280053109A CN103906940B CN 103906940 B CN103906940 B CN 103906940B CN 201280053109 A CN201280053109 A CN 201280053109A CN 103906940 B CN103906940 B CN 103906940B
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clutch
bearing
wall parts
divider wall
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CN103906940A (zh
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齐藤克行
宫地和裕
下薗和年
田村清人
吉川丰
川合显央
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Nissan Motor Co Ltd
JATCO Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00Friction clutches
    • F16D13/22Friction clutches with axially-movable clutching members
    • F16D13/38Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/38Arrangement 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 driveline clutches
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    • B60K6/00Arrangement 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
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    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/42Arrangement 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
    • B60K6/48Parallel type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/50Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54Transmission for changing ratio
    • B60K6/543Transmission for changing ratio the transmission being a continuously variable transmission
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
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    • F16D25/06Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16D25/082Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/083Actuators therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/02Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
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    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/42Arrangement 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
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00Special features for couplings or clutches
    • F16D2300/08Details or arrangements of sealings not provided for in group F16D3/84
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
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    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

在预先设定好的轴向间隙内布局配置离合器四周的构成要件时,能够实现用于配置彼此连结起来的第1旋转轴构件和毂构件的离合器间隙的扩大。驱动力传递装置具有干式多片离合器(7)。离合器鼓(6)具有分隔壁部(6b),该分隔壁部(6b)从该圆筒部(6a)向径向内侧延伸并与离合器鼓轴(4)连结起来,用于将鼓内侧空间分隔成轴承间隙(Sb)和离合器间隙(Sc)。在单元外壳(81)的分隔壁部(6b)侧的端部位置设置有用于限制第1轴承(12)的外圈(12b)沿轴向移动的限制部(81a)。在限制部(81a)的内周侧位置配置有分隔壁部(6b),该分隔壁部(6b)以与限制部(81a)在径向互相重叠的方式向轴承间隙(Sb)侧偏置。

Description

驱动力传递装置
技术领域
本发明涉及一种适用于混合动力车辆的驱动系统等的驱动力传递装置。
背景技术
以往,公知有如下混合动力驱动力传递装置:马达/发电机的转子支承于离合器鼓,在离合器鼓的鼓内侧空间配置有用于执行来自发动机的驱动力传递和驱动力切断的干式多片离合器。该以往装置在干式多片离合器的周围具有:离合器从动盘毂轴,其一体连结于离合器从动盘毂;离合器鼓轴,其一体连结于离合器鼓;单元外壳,其借助一对轴承支承离合器鼓轴,使离合器鼓轴能旋转(例如,参照专利文献1)。
专利文献1:日本特开2010-151313号公报
发明内容
发明要解决的问题
然而,以往的混合动力驱动力传递装置构成为如下结构:使离合器鼓的分隔壁部以绕着用于限制轴承的外圈的轴向移动的限制部的方式向离合器间隙侧偏置地配置。因此,存在如下问题:在预先设定好的轴向间隙内布局配置离合器四周的构成要件时,由于相对于限制部向离合器间隙侧偏置配置的分隔壁部的存在,离合器间隙变得狭小。
本发明着眼于上述问题而做成,其目的在于提供如下驱动力传递装置:在预先设定好的轴向间隙内布局配置离合器四周的构成要件时,能够实现配置有彼此连结起来的第1旋转轴构件和毂构件的离合器间隙的扩大。
用于解决问题的方案
为了达成上述目的,本发明的驱动力传递装置具有:离合器、第1旋转轴构件、第2旋转轴构件以及支承构件。
上述离合器夹设在毂构件和鼓构件之间,通过结合来传递驱动力、通过分开来切断驱动力。
上述第1旋转轴构件连结于上述毂构件,并与上述毂构件一体旋转。
上述第2旋转轴构件连结于上述鼓构件,并与上述鼓构件一体旋转。
上述支承构件设置于上述第2旋转轴构件的外周位置,借助轴承将上述第2旋转轴构件支承成上述第2旋转轴构件能够旋转。
上述鼓构件具有:圆筒部,上述离合器的盘构件设置于上述圆筒部;分隔壁部,其从该圆筒部沿径向内侧延伸并与上述第2旋转轴构件连结起来,用于将鼓内侧空间分隔成轴承间隙和离合器间隙。
在上述支承构件的上述分隔壁部侧的端部位置设置有用于限制上述轴承的外圈沿轴向移动的限制部。
在上述限制部的内周侧位置配置有上述分隔壁部,上述分隔壁部以与上述限制部在径向互相重叠的方式向上述轴承间隙侧偏置,
上述分隔壁部形成为将分隔壁部的下部侧轴向中心轴相对于分隔壁部的上部侧轴向中心轴的轴向间隔作为轴承侧偏置量。
发明的效果
于是,在用于限制轴承的外圈的轴向移动的限制部的内周侧位置以与限制部在径向互相重叠的方式向轴承间隙侧偏置地配置有鼓构件的分隔壁部。
即,用于分隔鼓构件的鼓内侧空间的分隔壁部配置为朝向轴承从向离合器间隙侧偏置的位置到向轴承间隙侧偏置的位置沿着轴向移动。因此,当将鼓内侧空间作为预先设定好的相同容积的间隙空间时,通过将分隔壁部向轴承间隙侧偏置配置,离合器间隙相应地扩大了轴承间隙的缩小的量。
其结果,在预先设定好的轴向间隙内布局配置离合器四周的构成要件时,能够实现用于配置彼此连结起来的第1旋转轴构件和毂构件的离合器间隙的扩大。
附图说明
图1是表示实施例1的混合动力驱动力传递装置(驱动力传递装置的一个例子)的整体概略图。
图2是表示实施例1的混合动力驱动力传递装置的干式多片离合器的四周结构的剖视图。
图3是表示实施例1的干式多片离合器的活塞臂的立体图。
图4是表示实施例1的干式多片离合器的活塞臂的图3的A-A剖视图。
图5是表示实施例1的混合动力驱动力传递装置的离合器四周构成要件的布局结构的放大剖视图。
图6是表示比较例的混合动力驱动力传递装置的离合器四周构成要件的布局结构的放大图。
图7是表示实施例2的混合动力驱动力传递装置的离合器四周构成要件的布局结构的放大剖视图。
图8是表示在实施例1的混合动力驱动力传递装置的离合器四周构成要件的布局结构中需要特殊加工的部位的放大剖视图。
具体实施方式
以下,基于附图所示的实施例1和实施例2说明用于实现本发明的驱动力传递装置的最佳方式。
实施例1
首先说明结构。
将实施例1的混合动力驱动力传递装置(驱动力传递装置的一个例子)的构成分为“整体系统结构”、“干式多片离合器的四周结构”以及“离合器四周构成要件的布局结构”来进行说明。
(整体系统结构)
图1是表示实施例1的混合动力驱动力传递装置的整体概略图。以下,基于图1说明整体系统构成。
如图1所示,实施例1的混合动力驱动力传递装置包括发动机Eng、马达与离合器单元M/C、变速器单元T/M。而且,与发动机Eng的发动机输出轴1连结的马达与离合器单元M/C具有:离合器从动盘毂轴2、离合器从动盘毂3、离合器鼓轴4、变速器输入轴5、离合器鼓6、干式多片离合器7以及从动缸8。
在实施例1的混合动力驱动力传递装置中,在常开型的干式多片离合器7分离开时,借助离合器鼓6和离合器鼓轴4将马达/发电机9和变速器输入轴5连结起来,而形成“电动汽车行驶模式”。并且,在利用从动缸8将干式多片离合器7液压结合起来时,借助结合起来的干式多片离合器7将发动机Eng和马达/发电机9连结起来,而形成“混合动力车辆行驶模式”。并且,借助减震器21将发动机输出轴1和离合器从动盘毂轴2连结起来。
上述马达与离合器单元M/C(图1的剖面阴影所示的区域)具有干式多片离合器7、从动缸8以及马达/发电机9。干式多片离合器7以连结的方式连接于发动机Eng,其用于切断、接通来自发动机Eng的驱动力的传递。从动缸8液压控制干式多片离合器7的结合、分离。马达/发电机9被配置在干式多片离合器7的离合器鼓6的外周位置,在马达/发电机9与变速器输入轴5之间进行动力的传递。
在该马达与离合器单元M/C中,以利用O型密封圈10保持着密封性的状态设有单元外壳81,该单元外壳81具有通往从动缸8的第1离合器压力油路85。
上述马达/发电机9是同步型交流电动机,其具有与离合器鼓6一体地设置的转子支承架91和支承固定于转子支承架91且埋入有永磁铁的马达转子92。并且,该马达/发电机9具有马达定子94和定子线圈95,该马达定子94与马达转子92隔着气隙93配置且固定在单元外壳81上,该定子线圈95卷绕在马达定子94上。另外,在单元外壳81上形成有供冷却水流通的水套96。
上述变速器单元T/M以连结的方式连接于马达与离合器单元M/C,其具有变速器外壳41、V型带式无级变速器机构42以及油泵O/P。V型带式无级变速器机构42内置于变速器外壳41,其将V型带张挂在两个带轮之间,通过使带接触直径变化而获得无级的变速比。油泵O/P是产生通往所需部位的液压的液压源,其以油泵压力为初压,并将用于调节通往带轮室的变速液压、离合器液压、制动器液压等压力的、来自附图以外的控制阀的液压导向所需部位。在该变速器单元T/M中还设有前进、倒车切换机构43、油箱44、端板45以及离合器单元壳体46。离合器单元壳体46一体固定于变速器外壳41。端板45具有第2离合器压力油路47。
借助链条驱动机构传递变速器输入轴5的旋转驱动转矩,从而对上述油泵O/P进行泵驱动。链条驱动机构具有驱动侧链轮51、从动侧链轮52以及链条53,该驱动侧链轮51随变速器输入轴5的旋转驱动而旋转,该从动侧链轮52驱动泵轴57而使泵轴57旋转,该链条53被张挂于两链轮51、52。驱动侧链轮51被夹设在变速器输入轴5与端板45之间,其借助套筒55以相对于固定在变速器外壳41上的定子轴54能够旋转的方式被支承于该定子轴54。并且,经由第1转接器56传递来自变速器输入轴5的旋转驱动转矩,该第1转接器56花键嵌合于变速器输入轴5并且与驱动侧链轮51进行爪嵌合。
(干式多片离合器的四周结构)
图2是表示实施例1的混合动力驱动力传递装置的干式多片离合器的四周结构的剖视图。图3是干式多片离合器的活塞臂的立体图,图4是表示活塞臂的图3的A-A剖视图。以下,基于图2~图4,说明干式多片离合器7的四周结构。
上述离合器从动盘毂3与固定于发动机Eng的发动机输出轴1的离合器从动盘毂轴2一体连结。如图2所示,在该离合器从动盘毂3上通过花键结合保持有干式多片离合器7的驱动盘71。
上述离合器鼓6一体连结于变速器单元T/M的变速器输入轴5。如图2所示,在该离合器鼓6上通过花键结合保持有干式多片离合器7的从动盘72(盘构件)。
通过在离合器从动盘毂3和离合器鼓6之间交替排列多枚驱动盘71和从动盘72而将上述干式多片离合器7夹设在离合器从动盘毂3和离合器鼓6之间。也就是说,通过将干式多片离合器7结合,能够在离合器从动盘毂3与离合器鼓6间进行转矩传递,通过将干式多片离合器7分离,能够切断离合器从动盘毂3和离合器鼓6间的转矩传递。
上述从动缸8是用于控制干式多片离合器7的结合、分离的液压驱动器,其配置在变速器单元T/M侧和离合器鼓6之间的位置。如图2所示,该从动缸8具有活塞82、第1离合器压力油路85以及缸油室86,该活塞82以能够滑动的方式设于单元外壳81的缸孔80中,该第1离合器压力油路85形成于单元外壳81,用于引导由变速器单元T/M产生的离合器压力,该缸油室86与第1离合器压力油路85连通。如图2所示,在活塞82与干式多片离合器7之间除了活塞臂83以外还夹设有滚针轴承87、复位弹簧84以及按压板88。
由于上述活塞臂83利用来自从动缸8的推压力产生干式对多片离合器7的推挤力,因此,上述活塞臂83以能够滑动的方式设置在形成于离合器鼓6的通孔61中。复位弹簧84夹设在活塞臂83和离合器鼓6之间,由多个盘形弹簧的组合构成。滚针轴承87夹设在活塞82与活塞臂83之间,其用于抑制活塞82随着活塞臂83的旋转而转动。按压板88与弹性支承板89设置成一体,并弹性支承于离合器鼓6。利用该按压板88和弹性支承板89构成用于阻断来自活塞臂83的滑动部的泄漏油向干式多片离合器7流入的分隔弹性构件。也就是说,具有利用被密封固定在离合器鼓6的活塞臂安装位置的按压板88及弹性支承板89将配置有从动缸8的湿空间和配置有干式多片离合器7的干空间分开的分隔功能。
如图3和图4所示,上述活塞臂83由形成为环状的臂体83a、在该臂体83a突出设置的多个臂销83b以及用于将臂销83b固定于上述臂体83a的卡环83c构成。在该活塞臂83的安装时,处于将臂销83b的销腿83e插入被形成于臂体83a的多个销孔83d、并且使形成于销腿83e的环形嵌合槽83f朝向臂体83a的中心位置的状态。而且,以对卡环83c施力而使卡环83c处于缩径的状态从内表面侧插入卡环83c,解除对卡环83c的施力,通过弹性恢复力使卡环83c扩径。由此,使卡环83c嵌合于环形嵌合槽83f,同时将所有的臂销83b固定于臂体83a。
如图2所示,实施例1的泄漏油回收油路设有第1轴承12、第1油封31、泄漏油路32、第1回收油路33以及第2回收油路34。即,实施例1的泄漏油回收油路是如下的回路:使来自活塞82的滑动部的泄漏油经过被第1密封构件31密封的第1回收油路33及第2回收油路34,返回到变速器单元T/M。除此之外,实施例1的泄漏油回收油路还是如下的回路:使来自活塞臂83的滑动部的泄漏油经过被分隔弹性构件(按压板88、弹性支承板89)密封的泄漏油路32和被第1密封构件31密封的第1回收油路33及第2回收油路34,返回到变速器单元T/M。
上述第1轴承12以离合器鼓轴4能旋转的方式将离合器鼓轴4支承于单元外壳81。而且,为了防止离合器鼓6相对于单元外壳81的轴偏移,第1轴承12以外的夹杂物不夹设于单元外壳81和离合器鼓6之间。
如图2所示,上述第1油封31配置于比分隔弹性构件(按压板88、弹性支承板89)靠泄漏油的流向的下游位置,用于将单元外壳81和离合器鼓6的相面对的面之间密封。该第1油封31是利用密封弹力发挥密封性能的唇形密封的构造,因为能够利用第1轴承12、12抑制离合器鼓6轴心偏移,从而能够确保稳定的密封性能。
如图2所示,上述泄漏油路32以贯穿离合器鼓6,并将由分隔弹性构件(按压板88、弹性支承板89)构成的密封分离空间和第1回收油路33连通的方式形成。
如图2所示,上述第1回收油路33由单元外壳81和离合器鼓6相面对而形成的间隙形成。而且,第1油封31和第2回收油路34配置在比活塞82和活塞臂83的滑动部靠外周侧的位置。由此,第2回收油路34成为从活塞82和活塞臂83的滑动部向外周方向延伸的油路。
如图2所示,上述第2回收油路34是形成在比单元外壳81的第1油封31靠下游侧的较短油路。而且,比第1油封31靠上游侧的较长油路是由单元外壳81和离合器鼓6相面对的间隙形成的第1回收油路33。
如图2所示,实施例1的轴承润滑油路包括滚针轴承20、第2油封14、第1轴心油路19、第2轴心油路18以及润滑油路16。该轴承润滑油路利用如下的路径进行轴承润滑:使来自变速器单元T/M的轴承润滑油经过滚针轴承20、将离合器鼓6以能旋转的方式支承于单元外壳81的第1轴承12、12以及夹设在活塞82与活塞臂83之间的滚针轴承87,返回到变速器单元T/M。
如图2所示,上述滚针轴承20设定在离合器从动盘毂3和离合器鼓6沿轴向相面对的面之间。利用该滚针轴承20抑制离合器从动盘毂3和离合器鼓6沿轴向的往复运动的同时,允许离合器从动盘毂3和离合器鼓6的相对旋转。
如图2所示,上述第2油封14夹设在离合器从动盘毂轴2和离合器鼓6之间。利用该第2油封14密封轴承润滑油,以使轴承润滑油不能从配置有从动缸8的湿空间流入到配置有干式多片离合器7的干空间。
上述第1轴心油路19形成于变速器输入轴5的轴心位置。上述第2轴心油路18形成于离合器鼓6并与第1轴心油路19连通。上述润滑油路16形成于离合器鼓6,借助与离合器从动盘毂轴2之间的间隙17借助滚针轴承20与第2轴心油路18连通。
(离合器四周构成要件的布局结构)
图5是表示实施例1的混合动力驱动力传递装置的离合器四周构成要件的布局结构的放大剖视图。以下,基于图2和图5,说明离合器四周构成要件的布局结构。
如图5所示,作为上述干式多片离合器7(离合器)的离合器四周构成要件具有:离合器从动盘毂轴2(第1旋转轴构件)、离合器从动盘毂3(毂构件)、离合器鼓轴4(第2旋转轴构件)、离合器鼓6(鼓构件)、单元外壳81(支承构件)、第2油封14(油封)以及滚针轴承20(推力轴承)。
如图5所示,上述离合器从动盘毂轴2通过细齿花键结合与离合器从动盘毂3连结起来,并与离合器从动盘毂3一体旋转。
在这里,用于将离合器从动盘毂轴2和离合器从动盘毂3彼此槽嵌合的细齿花键结合部21在插入离合器从动盘毂轴2时边产生碎屑边插入,并利用残留碎屑使轴向的移动停止。
如图5所示,上述离合器鼓轴4是利用焊接接合连结于离合器鼓6并与离合器鼓6一体旋转。
在这里,离合器鼓轴4和离合器鼓6之间的焊接接合部22是通过形成彼此沿轴向抵接的台阶、将夹着台阶面形成于两侧的周向抵接面中的轴承侧抵接面作为细齿花键结合并焊接离合器侧抵接面来接合的。
如图5所示,上述单元外壳81是设置于离合器鼓轴4的外周位置、借助第1轴承12(轴承)将离合器鼓轴4支承成离合器鼓轴4能旋转的静止构件。
在这里,第1轴承12是在内圈12a和外圈12b之间夹设2列球12c、12d(滚动体)而成的一体型轴承。该第1轴承12的内圈12a的轴向移动被设置于离合器鼓轴4的环形槽4a的卡环15所限制。
如图2和图5所示,上述离合器鼓6具有:圆筒部6a,其用于设置干式多片离合器7的从动盘72(盘构件);分隔壁部6b,其从该圆筒部6a沿径向内侧延伸并与离合器鼓轴4连结,用于将鼓内侧空间分隔成轴承间隙Sb和离合器间隙Sc。
如图5所示,在上述单元外壳81的靠分隔壁部6b侧的端部位置设置有用于限制第1轴承12的外圈12b沿轴向移动的限制部81a。而且,在限制部81a的内周侧位置配置有分隔壁部6b,该分隔壁部6b以与限制部81a在径向互相重叠的方式向轴承间隙Sb侧偏置。
在将分隔壁部6b偏置配置于该限制部81a的内周侧位置时,一体型的第1轴承12的轴承外径R设置得比设置有一对在内圈和外圈之间夹设的1列滚动体的轴承的情况下(参照图6)的轴承外径R’大。由此,确保沿限制部81a的内周侧的半径方向扩展而成的间隙,并在该间隙偏置配置有分隔壁部6b。即,将分隔壁部6b的下部侧轴向中心轴CL'相对于分隔壁部6b的上部侧轴向中心轴CL的轴向间隔作为轴承侧偏置量ΔOFF。
上述第2油封14夹设于离合器从动盘毂轴2的外周面2a与形成于分隔壁部6b的环状突起62的内周面62a之间的沿径向相面对的面之间,用于抑制会从轴承间隙Sb进入用于配置干式多片离合器7的离合器间隙Sc的油。
该第2油封14将离合器从动盘毂轴2的外周面2a作为压入面,将形成于分隔壁部6b的环状突起62的内周面62a作为密封面。
上述滚针轴承20夹设在离合器鼓轴4的台阶面4b与离合器从动盘毂轴2的端面2b之间的沿轴向相面对的面之间。
该滚针轴承20将离合器鼓轴4的台阶面4b作为圆环状的轴承构件的设定面,将离合器从动盘毂轴2的端面2b作为滚针滚动面。即,滚针轴承2通过将圆环状轴承构件设为一体结构,滚针轴承2以其中一个的面作为基准面来进行对位(定心)即可,那么提高材质硬度的渗碳加工的特殊加工必要部位只存在于离合器从动盘毂轴2的端面2b。
此外,在图5中,在离合器从动盘毂轴2上夹设有以离合器从动盘毂轴2能旋转的方式支承于单元外壳81的第2轴承13。
下面说明作用。
首先,说明“比较例的课题”。接下来,将在实施例1的混合动力驱动力传递装置中的作用分为“离合器四周构成要件的布局作用”来进行说明。
(比较例的课题)
图6是表示比较例的混合动力驱动力传递装置的离合器四周构成要件的布局结构的放大图剖视图。以下,基于图6,说明由比较例中的离合器四周构成要件的布局结构带来的课题。
比较例是一种混合动力驱动力传递装置,马达/发电机的转子支承于离合器鼓,在离合器鼓的鼓内侧空间配置有用于执行来自发动机的驱动力传递和驱动力切断的干式多片离合器。在该装置中,在干式多片离合器的四周具有:离合器从动盘毂轴,其一体连结于离合器从动盘毂;离合器鼓轴,其一体连结于离合器鼓;单元外壳,其借助一对球轴承支承离合器鼓轴,使离合器鼓轴能旋转。离合器鼓借助用于将鼓内侧空间分隔成轴承间隙Sb’和离合器间隙Sc’的分隔壁部与离合器鼓轴连结起来。在单元外壳的分隔壁部侧的端部位置设置有用于限制轴承的外圈沿轴向移动的限制部,在限制部的外侧位置以绕着限制部的方式向离合器间隙侧偏置地配置有分隔壁部。即,在比较例中,将分隔壁部的下部侧轴向中心轴CL'相对于分隔壁部的上部侧轴向中心轴CL的轴向间隔作为离合器侧偏置量ΔOFF'。
在上述比较例中,形成有如下结构:使离合器鼓的分隔壁部以绕着用于限制轴承的外圈沿轴向移动的限制部的方式向离合器间隙Sc’侧偏置地配置。因此,在将离合器四周的构成要件布局配置于预先设定好的轴向的间隙空间S内时,由于相对于限制部向离合器间隙侧偏置配置的分隔壁部存在,离合器间隙Sc’变得狭小。
该离合器间隙Sc’变得狭小的结果是:也不得不使得离合器从动盘毂轴和离合器从动盘毂的轴向连结宽度wh成为较窄的宽度。因此,如图6所示,离合器从动盘毂轴和离合器从动盘毂的连结成为一边是较窄的轴向连结宽度wh一边能够确保所希望的连结强度的焊接接合。在该焊接接合的情况下,在进行了焊接作业后,需要实施通过研磨来对焊接部分进行精加工的精加工。因此,制造性降低同时导致成本上扬。
(离合器四周构成要件的布局作用)
为了解决上述比较例的课题,需要不仅着眼于离合器上游侧的离合器从动盘毂轴和离合器从动盘毂,也需要一并解决离合器下游侧的构成要件的布局问题。以下,说明反映该情况的离合器四周构成要件的布局作用。
首先,扩大比较例的2个球轴承的球径而提高传递容量,变为径向尺寸扩大了的一体型的第1轴承12。由此,第1轴承12的轴承外径R变得比比较例的2个球轴承的轴承外径R’大,从而确保在半径方向扩大了的间隙。此时,第1轴承12的轴承外径R的尺寸要兼考虑维持缸油室86的油室体积和活塞控制性来决定。
在通过形成在该径向上提高了尺寸的一体型的第1轴承12而确保的限制部81a的内周侧的间隙内偏置配置有离合器鼓6的分隔壁部6b。如图5所示,该偏置配置指的是以使限制部81a和分隔壁部6b沿径向互相重叠的方式在限制部81a的内周侧位置向轴承间隙Sb侧偏置(轴承侧偏置量ΔOFF)的配置。
即,配置为:使用于分隔离合器鼓6的鼓内侧空间的分隔壁部6b朝向第1轴承12从向离合器间隙Sc’侧的偏置位置(图6)到向轴承间隙Sb侧的偏置位置(图5)沿轴向移动。因此,如图5所示,当将鼓内侧空间作为预先设定好的相同容积的间隙空间S时,通过将分隔壁部6b向轴承间隙Sb侧偏置配置,离合器间隙Sc相对地扩大了轴承间隙Sb的缩小的量。
因此,在预先设定好的轴向间隙内布局离合器四周的构成要件时,实现了用于配置彼此连结起来的离合器从动盘毂轴2和离合器从动盘毂3的离合器间隙Sc的扩大。其结果,确保离合器从动盘毂轴2和离合器从动盘毂3的轴向连结宽度Wh(>wh)比比较例长,作为离合器从动盘毂轴2和离合器从动盘毂3的连结结构,能够应用细齿花键结合。该细齿花键结合因为只通过如下工序来进行:在插入离合器从动盘毂轴2时边产生碎屑边插入,并利用残留碎屑使轴向移动停止,因此,不需要像比较例那样的精加工,从而能够在制造性提高的同时实现降低成本。
还有,在由于离合器间隙Sc的扩大,而进一步产生间隙富余的情况下,确保离合器鼓6的分隔壁部6b和离合器鼓轴4的轴向连结宽度Wd(>wd)比比较例长。由此,能够实现分隔壁部6b和离合器鼓轴4的连结强度的提高。
下面,陈述将比较例的2个球轴承变更为实施例1的一体型的第1轴承12的理由。
如果将2个球轴承变更为一体型的第1轴承12,虽然能够减少零件个数,但反过来,也降低了轴承耐力。因此,通过扩大一体型的第1轴承12的球径来提高传递容量,并增大径向尺寸,在防止轴承耐力的降低的同时,能够与轴承外径R扩大的量相应地充分确保供离合器鼓6的分隔壁部6b偏置的间隙。即,不浪费地增加轴承外径且实现零件个数的削减。
下面说明效果。
实施例1的混合动力驱动力传递装置能够获得下面列举的效果。
(1)驱动力传递装置具有:
离合器(干式多片离合器7),其夹设在毂构件(离合器从动盘毂3)和鼓构件(离合器鼓6)之间,通过结合来传递驱动力、通过分开来切断驱动力;
第1旋转轴构件(离合器从动盘毂轴2),其连结于上述毂构件(离合器从动盘毂3),并与上述毂构件(离合器从动盘毂3)一体旋转;
第2旋转轴构件(离合器鼓轴4),其连结于上述鼓构件(离合器鼓6),并与上述鼓构件(离合器鼓6)一体旋转;
支承构件(单元外壳81),其设置于上述第2旋转轴构件(离合器鼓轴4)的外周位置,借助轴承(第1轴承12)将上述第2旋转轴构件(离合器鼓轴4)支承成上述第2旋转轴构件(离合器鼓轴4)能够旋转,
上述鼓构件(离合器鼓6)具有:圆筒部6a,其用于设置上述离合器(干式多片离合器7)的盘构件(从动盘72);分隔壁部6b,其从该圆筒部6a向径向内侧延伸并与上述第2旋转轴构件(离合器鼓轴4)连结起来,用于将鼓内侧空间分隔成轴承间隙Sb和离合器间隙Sc,
在上述支承构件(单元外壳81)的靠上述分隔壁部6b侧的端部位置设置有用于限制上述轴承(第1轴承12)的外圈12b沿轴向移动的限制部81a,
在上述限制部81a的内周侧位置配置有上述分隔壁部6b,上述分隔壁部6b以与上述限制部81a在径向互相重叠的方式向上述轴承间隙Sb侧偏置。
因此,在预先设定好的轴向间隙内布局配置离合器四周的构成要件时,能够实现用于配置彼此连结起来的第1旋转轴构件(离合器从动盘毂轴2)和毂构件(离合器从动盘毂3)的离合器间隙Sc的扩大。
(2)上述轴承是在内圈12a和外圈12b之间夹设2列滚动体(球12c)而成的一体型轴承(第1轴承12),
上述一体型轴承(第1轴承12)的外径(轴承外径R)设定得比设置有一对在内圈和外圈之间夹设的1列滚动体的轴承的情况下的外径R’大。
因此,除了(1)的效果以外,在实现零件个数的削减和防止轴承耐力降低的同时,能够充分确保供鼓构件(离合器鼓6)的分隔壁部6b偏置的间隙。
实施例2
实施例2是第2油封14的密封面和按压面与第1实施例不同的例子。
首先说明结构。
图7是表示实施例2的混合动力驱动力传递装置的离合器四周构成要件的布局结构的放大剖视图。以下,基于图7说明离合器四周构成要件的布局结构。
如图7所示,作为上述干式多片离合器7(离合器)的离合器四周构成要件具有:离合器从动盘毂轴2(第1旋转轴构件)、离合器从动盘毂3(毂构件)、离合器鼓轴4(第2旋转轴构件)、离合器鼓6(鼓构件)、单元外壳81(支承构件)、第2油封14(油封)以及滚针轴承20(推力轴承)。
上述第2油封14夹设于离合器从动盘毂轴2的外周面2a与形成于分隔壁部6b的环状突起62的内周面62a之间的径向相面对的面之间,用于抑制会从轴承间隙Sb进入用于配置干式多片离合器7的离合器间隙Sc的油。
该第2油封14将形成于分隔壁部6b的环状突起62的内周面62a作为压入面,将离合器从动盘毂轴2的外周面2a作为密封面。
此外,其他的结构与实施例1一样,在对应的结构上标注相同的附图标记并省略说明。
下面说明作用。
作为进一步降低离合器四周结构的成本的方法,需要削减实施用于提高材质硬度的热处理(渗碳加工等)的旋转构件的部位。
即,如图8所示,实施例1的离合器四周结构是:通过将滚针轴承20与圆环状的轴承构件一体形成,使得用于提高材质硬度的渗碳加工等的特殊加工必要部位B只存在于离合器从动盘毂轴2的端面2b。但是,第2油封14将离合器从动盘毂轴2的外周面2a作为压入面,将形成于分隔壁部6b的环状突起62的内周面62a作为密封面。因此,形成于分隔壁部6b的环状突起62的内周面62a成为用于提高材质硬度的渗碳加工等的特殊加工必要部位C,特殊加工必要部位B、C横跨离合器从动盘毂轴2和离合器鼓6这两个构件。
相对于此,如图7所示,实施例2的离合器四周结构是:通过将滚针轴承20与圆环状的轴承构件一体形成,使得用于提高材质硬度的渗碳加工等的特殊加工必要部位只存在于离合器从动盘毂轴2的端面2b。而且,第2油封14将形成于分隔壁部6b的环状突起62的内周面62a作为压入面,将离合器从动盘毂轴2的外周面2a作为密封面。因此,离合器从动盘毂轴2的外周面2a成为用于提高材质硬度的渗碳加工等的特殊加工必要部位,特殊加工必要部位D只存在于离合器从动盘毂轴2。
因此,只需对离合器从动盘毂轴2进行用于提高材质硬度的渗碳加工等热处理即可,从而实现离合器四周结构的成本的进一步降低。
此外,因为其他的作用与实施例1相同,省略说明。
下面说明效果。
实施例2的混合动力驱动力传递装置能够取得如下效果。
(3)上述离合器是干式多片离合器7,
在上述第1旋转轴构件(离合器从动盘毂轴2)的外周面2a与形成于上述分隔壁部6b的环状突起62的内周面62a之间的径向相面对的面之间,配置有用于抑制油从轴承间隙Sb进入用于配置上述干式多片离合器7的离合器间隙Sc的油封(第2油封14),
在上述第2旋转轴构件(离合器鼓轴4)的台阶面4b和上述第1旋转轴构件(离合器从动盘毂轴2)的端面2b之间的轴向相面对的面之间配置有将上述台阶面4b作为一体结构的的圆环状的轴承构件的设定面的推力轴承(滚针轴承20),
上述油封(第2油封14)在上述第1旋转轴构件(离合器从动盘毂轴2)上形成有密封面,在上述分隔壁部6b上形成有压入面。
因此,除了实施例1的(1)、(2)的效果以外,因为只需对第1旋转轴构件(离合器从动盘毂轴2)进行用于提高材质硬度的渗碳加工等热处理即可,能够实现进一步降低离合器四周结构的成本。
以上,虽然基于实施例1和实施例2说明了本发明的驱动力传递装置,但对于具体的结构,并不限于这些实施例,只要不脱离权利要求书的各项权利要求所涉及的发明主旨,就允许进行设计的变更、追加等。
在实施例1、实施例2中,作为离合器示出了使用常开型的多片干式离合器的例子。但是,作为离合器,也可以采用使用单片湿式离合器、多片湿式离合器、单片干式离合器等其他形式的液压工作离合器的例子,也可以采用使用了膜片弹簧等的常闭型的离合器的例子。
在实施例1、实施例2中,示出了应用于搭载有发动机和马达/发电机、将离合器作为行驶模式转变离合器的混合动力车辆的混合动力驱动力传递装置的应用例。然而,也能够应用于仅搭载发动机作为驱动源、将离合器作为起步离合器的内燃机车辆的发动机驱动力传递装置。而且,也能够应用于仅搭载马达/发电机作为驱动源、将离合器作为起步离合器的电动汽车的马达驱动力传递装置。
关联申请的相互参照
本申请基于2011年11月8日向日本特许厅提出的日本特愿2011-244331主张优先权,并将其所有的公开内容通过参照而编入到本说明书中。

Claims (3)

1.一种驱动力传递装置,其特征在于,
该驱动力传递装置具有:
离合器,其夹设在毂构件和鼓构件之间,通过结合来传递驱动力、通过分开来切断驱动力;
第1旋转轴构件,其连结于上述毂构件,并与上述毂构件一体旋转;
第2旋转轴构件,其连结于上述鼓构件,并与上述鼓构件一体旋转;
支承构件,其设置于上述第2旋转轴构件的外周位置,借助轴承将上述第2旋转轴构件支承成能够旋转,
上述鼓构件具有:圆筒部,上述离合器的盘构件设置于上述圆筒部;分隔壁部,其从该圆筒部沿径向内侧延伸并与上述第2旋转轴构件连结起来,用于将上述鼓构件的内侧空间分隔成轴承间隙和离合器间隙,
在上述支承构件的上述分隔壁部侧的端部位置设置有用于限制上述轴承的外圈沿轴向移动的限制部,
在上述限制部的内周侧位置配置有上述分隔壁部,上述分隔壁部以与上述限制部在径向互相重叠的方式向上述轴承间隙侧偏置,
上述分隔壁部形成为将分隔壁部的下部侧轴向中心轴相对于分隔壁部的上部侧轴向中心轴的轴向间隔作为轴承侧偏置量。
2.根据权利要求1所述的驱动力传递装置,其特征在于,
上述轴承是在内圈和外圈之间夹设2列滚动体而成的一体型轴承,
上述一体型轴承的外径设定得比设置有一对在内圈和外圈之间夹设1列滚动体的轴承的情况下的外径大。
3.根据权利要求1或2所述的驱动力传递装置,其特征在于,
上述离合器是干式多片离合器,
在上述第1旋转轴构件的外周面与形成于上述分隔壁部的环状突起的内周面之间的径向相面对的面之间,配置有用于抑制油从轴承间隙进入用于配置上述干式多片离合器的离合器间隙的油封,
在上述第2旋转轴构件的台阶面和上述第1旋转轴构件的端面之间的轴向相面对的面之间配置有将上述台阶面作为一体结构的圆环状的轴承构件的设定面的推力轴承,
上述油封在上述第1旋转轴构件上形成有密封面,在上述分隔壁部上形成有压入面。
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US20140262674A1 (en) 2014-09-18
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