CN101160481A - 油路结构 - Google Patents

油路结构 Download PDF

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Publication number
CN101160481A
CN101160481A CNA2006800129406A CN200680012940A CN101160481A CN 101160481 A CN101160481 A CN 101160481A CN A2006800129406 A CNA2006800129406 A CN A2006800129406A CN 200680012940 A CN200680012940 A CN 200680012940A CN 101160481 A CN101160481 A CN 101160481A
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oil circuit
engaging surface
oil
cooling oil
plain washer
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伊良波由美
足立昌俊
本池一利
一柳润
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Aisin AW Co Ltd
Toyota Motor Corp
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Aisin AW Co Ltd
Toyota Motor Corp
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    • 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
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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    • 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
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2250/00—Problems related to engine starting or engine's starting apparatus
    • F02N2250/08—Lubrication of starters; Sealing means for starters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

一种油路结构包括：电动机壳体(21)，具有接合表面(21a)并具有形成在其中并在接合表面(21a)上开口的冷却油路(22)；发电机壳体(31)，具有形成在其中的冷却油路(32)，并接合到接合表面(21a)使得冷却油路(22、32)彼此连通；O型环(46)，在冷却油路(22、32)之间进行密封；平垫圈(41)，限制流经油路的油流率。在发电机壳体(31)中，在邻近于接合表面(21a)并位于冷却油路(32)路线上的位置处形成凹入部分(33)。在凹入部分(33)中，布置与接合表面(21a)接触的O型环(46)以及平垫圈(41)，平垫圈(41)位于O型环(46)的跟接合表面(21a)相反那侧。平垫圈(41)夹在O型环(46)与底表面(34)之间。从而可以提供一种确保可靠密封并能用简单结构调整流率的油路结构。

Description

油路结构
技术领域
本发明一般地涉及油路结构，更具体地涉及具有用于限制位于油路中的油量的油量调节构件。
背景技术
关于传统油路结构，例如日本专利公开No.10-169773公开了一种意欲降低尺寸和成本的变速器操作装置。该文献中公开的变速器操作装置包括气缸壳体和阀壳体，气缸侧流动通道形成于气缸壳体中，阀侧流动通道形成于阀壳体中，其中阀侧流动通道和气缸侧流动通道连通。在气缸壳体和阀壳体之间的相互接合处，布置包围流动通道外周的环形密封构件。
此外，日本专利公开No.9-79118公开了一种内燃机的电动发电机，其意欲抑制定子线圈中的温度升高，而不增大尺寸或部件数量。
在日本专利公开No.10-169773中公开的变速器操作装置中，使得加压流体流经气缸侧和阀侧流动通道。为了调节流路中的加压流体的流率，可以采用使用插塞的方法，该插塞具有直径比流路直径更小的孔。根据该方法，在气缸壳体和阀壳体之间的相互接合处，将插塞压配合到流路中，并使压入的插塞通过填塞而固定。但是注意，在相互接合处，布置环形密封构件用于密封两个壳体之间的流动通道。因此，在填塞时环形密封构件可能由于金属的毛刺或凸片而被损坏，可能失去流动通道的密封。此外，在插塞压配合的位置，具有和流动通道不同直径的孔的处理必须在壳体内进行，这需要很高处理精度。这可能导致制造成本的增加。
作为调节加压流体的流率的另一个方法，可以在壳体上进行孔处理，使得流动通道本身更小。但是在这样的情况下，需要使用小直径钻头将孔处理到较深位置，这样的处理可能很困难甚至几乎不可能。
发明内容
本发明的一个目的在于解决上述问题并提供使用简单结构调节流率同时确保可靠密封的油路结构。
本发明提供一种油路结构，包括：第一构件，具有接合表面，所述第一构件具有形成在其中并在所述接合表面上开口的第一油路；第二构件，具有形成在其中的第二油路，所述第二构件接合到所述接合表面，使得所述第一油路和所述第二油路彼此连通；环形密封构件，在所述第一油路和所述第二油路之间进行密封；和油量调节构件，限制流经油路的油量。所述第二构件具有容纳部分，容纳部分形成在邻近于所述接合表面并处于所述第二油路的路线上的位置处。在所述容纳部分中，布置与所述接合表面接触的所述环形密封构件以及位于所述环形密封构件的与所述接合表面相反那侧的所述油量调节构件。所述油量调节构件夹在所述环形密封构件和所述第二构件的壁表面之间，所述壁表面限定所述容纳部分。
在上述形成的油路结构中，油量调节构件和环形密封构件一起布置在容纳部分中，因此，不需要分别提供用于布置油量调节构件的部分和容纳部分。此外，油量调节构件被夹在所述环形密封构件和第二构件的壁表面之间，因此，不需要将油量调节构件固定在第二构件上。因此，可以简化在第二构件上进行的处理，并便于油量调节构件的组装。此外，环形密封构件设置在第一构件的接合表面和油量调节构件之间，同时与接合表面接触，因此，可以可靠地获得第一和第二油路之间的密封。
优选地，所述环形构件是O型环，而所述油量调节构件是垫圈。在这样形成的油路结构中，市场上获得的部件可以用于环形密封构件和油量调节构件。因此，可以减少制造成本。
此外，供应到电动发电机的冷却油流经所述第一油路和所述第二油路。通过这样形成的油路结构，可以以简单结构将待供应到电动机的冷却油的量调节到适当的量，同时获得可靠的密封。
如上所述，根据本实施例，可以提供能够用简单结构进行流率调节同时确保可靠密封的油路结构。
附图说明
图1是示出传动系(驱动装置)的剖视图，根据本发明实施例的油路结构应用于该传动系上。
图2是示出图1中的双点划线II所包围的位置的放大剖视图。
图3是示出布置在图2中凹入部分的平垫圈和O型环组件的分解立体图。
图4是图示作用在图1的传动系中O型环上的力的剖视图。
图5是作用在图1中传动系的修改版本的O型环上的力的剖视图。
具体实施方式
下面将参考附图描述本发明的实施例。在下面参考的所有附图中，相同或对应的部分赋予相同的参考标号。
图1中所示的传动系安装在FR(前置发动机、后轮驱动)混合动力车辆上，该混合动力车辆具有内燃机(诸如汽油发动机或柴油发动机)和可充电的蓄电池作为动力源。
参考图1，传动系10包括容纳电动发电机200的发电机壳体31和容纳电动发电机300的电动机壳体21，电动机壳体21和发电机壳体31组装在一起。发电机壳体31和电动机壳体21具有圆柱形状。在电动机发电机200和电动发电机300之间布置功率分配机构400。在和动力分配机构400相反的电动发电机300的一侧布置自动变速器500。
电动发电机200比电动发电机300设置在车辆更前侧。电动发电机200包括定子61和转子65。定子61通过紧固螺栓等被固定到发电机壳体31的内周。转子轴66被以可旋转方式支撑在发电机壳体31上，轴承插入其间。转子65固定在转子轴66上。
电动发电机300包括定子81和转子85。定子81通过紧固螺栓等被固定到电动机壳体21的内周。转子轴86被以可旋转方式支撑在电动机壳体21上，轴承插入在其间。转子85固定在转子轴86上。定子61和81例如通过层压钢板的定子芯和绕定子芯的齿部分缠绕的铜线形成。
动力分配机构400由一组行星轮机构形成。动力分配机构400固定在连接到发动机输出轴的轴51、电动发电机200的转子轴66和连接到自动变速器500的轴52上。
在这样的配置下，发动机产生的动力由轴51供给并由动力分配机构400分配成两路。一路使轴52旋转并通过自动变速器500驱动后驱动轴，而另一路使转子轴66以及转子65旋转，以在电动发电机200中产生电能。
取决于车辆的运行状态，电动发电机200使用发动机动力产生的电能给电池(未示出)充电或将电能供应到电动发电机300。在发动机开始操作时，电动发电机200用作起动器，即使发动机的输出轴旋转并进行发动的电动机。
电动发电机300使用存储在电池中的电能和电动发电机200产生的电能中至少一者进行操作。具体而言，在电动发电机300中，随着定子81接收电能供应而产生磁场。产生的磁场旋转转子85，并且因此旋转轴52。电动发电机300这样产生的驱动力通过自动变速器500传递到后驱动轴。这样，电动发电机300辅助发动机的驱动动力，并使用从电动发电机200供应的电动力实现车辆的运行。
传动系10还包括电动油泵73和机械油泵72，机械油泵72操作以接收来自发动机的驱动动力。在电动机壳体21和发动机壳体31的每个中，形成冷却油路22以及和冷却油路22连通的冷却油路32。从电动油泵73或机械油泵72供给的加压冷却油经过冷却油路22并供应到定子81的定子芯以及线圈端82。此外，冷却油经过冷却油路22到达冷却油路32，并供应到定子61的定子芯以及线圈端62。
参考图2，电动机壳体21具有接合表面21a，冷却油路22在接合表面21a上开口，而发电机壳体31具有接合表面31a，冷却油路32在接合表面31a上开口。冷却油路22沿和接合表面21a正交的方向朝接合表面21a延伸。冷却油路32沿与接合表面31a斜向交叉的方向朝接合表面31a延伸。接合表面21a和31a接合，使得冷却油路22和32彼此连通。在冷却油路22和32彼此开口的位置，冷却油路沿相互不同方向延伸。
此外，在发电机壳体31中，在冷却油路32的路线上的位置形成凹入部分33。凹入部分33被形成为从接合表面31a以柱状凹陷，并且凹入部分33由底表面34和侧表面35限定，其中底表面34以距接合表面31a的预定深度平行于接合表面31a延伸，而侧表面35在底表面34周边边缘和接合表面31a之间呈圆筒形延伸。冷却油路32大致到达底表面34的中心。在凹入部分33中布置平垫圈41和O型环46。
参考图2和3，直径小于冷却油路22和32的孔42形成于平垫圈41中。设置平垫圈41，使得孔42和冷却油路32的开口对准。平垫圈41抵靠底表面34。平垫圈41由诸如铁或不锈钢的金属形成。从市场可以获得的垫圈可以用作平垫圈41。
O型环46设置在平垫圈41的与底表面34相反的一侧。O型环沿远离底表面34的方向和平垫圈41相邻设置。O型环46由诸如NBR(丁腈橡胶)的弹性构件形成。市场上可以获得的O型环可以用作O型环46，或者可以使用形成具有环状的FIPG(现场成型垫圈)。
当组装电动机壳体21和发电机壳体31并将平垫圈41和O型环46布置于凹入部分33时，平垫圈41保持在凹入部分33中，因为其夹在底表面34和O型环46之间。此外，O型环46压在平垫圈41和接合表面21a之间，并与侧表面35和接合表面21a两者进行压接触。由此建立了冷却油路22和冷却油路32之间的密封。
当用D1表示O型环46的外径、用D2表示平垫圈41的直径、用D3表示孔42的直径、用D4表示凹入部分33的直径和用D5表示冷却油路32的直径时，本实施例中满足“D1＞D4＞D2＞D5＞D3”的关系。作为示例，D3是2mm，D4是18mm，而D5是5mm。
通过这样的结构，从冷却油路22到冷却油路32的冷却油流率由平垫圈41限制。在本实施例中，平垫圈41夹在底表面34和O型环46之间，并保持在凹入部分33中。因此，不必使平垫圈41通过压配合(即，可以是D4＞D2的直径设置)固定在凹入部分33中。因此，容易将平垫圈41布置在凹入部分33中。此外，在布置平垫圈41的位置处，可以将凹入部分33的处理精度设置成粗糙，因此凹入部分33的处理变得更容易。
当将市场上获得的垫圈用作平垫圈41时，有不同孔径的垫圈允许选择合适的一种。因此，冷却油的流动速率可以限制到最佳的量。
O型环被设置成和平垫圈41在与接合表面21a相反那侧进行面接触(平面-平面接触)。因此，和通过填塞而固定在冷却油路的用于限制冷却油流率的构件相比，在组装过程中或之后对O型环46的任何损坏的可能性更小。因此，提高了冷却油路22和冷却油路32之间的密封的可靠性。
参考图4，在本实施例中，O型环46和平垫圈41布置在冷却油流动的上游侧和下游侧。因此，在由平垫圈41限制冷却油的流率之前，凹入部分33处冷却油的压力增大，因此O型环46被推动到侧表面35，如箭头101所示。这提高了冷却油路22和冷却油路32之间的紧密密封性。
参考图5，假设在图所示的示例中，冷却油从冷却油路32流动到冷却油路22，并且平垫圈41和O型环46布置在冷却油流动的上游侧和下游侧。这里，流经冷却油路32的冷却油压迫平垫圈41的表面，并且通过受压的平垫圈41将O型环46推到接合表面21a，如箭头102所示。结果，可提高冷却油路22和冷却油路32之间的紧密密封性。
本实施例的油路结构包括：作为第一构件的电动机壳体21，具有接合表面21a并具有形成在电动机壳体21中作为第一油路的冷却油路22，冷却油路22朝接合表面21a开口；作为第二构件的发电机壳体31，具有形成于发电机壳体31中作为第二油路的冷却油路32，冷却油路32连接到接合表面21a，使得冷却油路22和冷却油路32彼此连通；作为环形密封构件的O型环46，在冷却油路22和冷却油路32之间进行密封；以及作为油量调节构件的平垫圈41，限制流经冷却油路的油量。在发电机壳体31中，在邻近接合表面21a并位于冷却油路32的路线上的位置处，形成作为容纳部分的凹入部分33。在凹入部分33中，布置与接合表面21a接触的O型环46、以及位于O型环46的与接合表面21a相反那侧的平垫圈41。平垫圈41夹在O型环46和底表面34之间，底表面34作为限制了凹入部分33的发电机壳体31的壁表面。
在根据本实施例上述的油路结构中，平垫圈41和O型环46一起布置在凹入部分33中。因此，不需要单独在电动机壳体21或发电机壳体31上提供用于容纳平垫圈41的位置。此外，通过适当选择孔42的直径，可以自由地改变供应到定子61的冷却油的流率。因此，当处理冷却油路32时，不需要使用非常小直径的钻头。由于这些原因，可以以简单方式快速进行电动机壳体21和发电机壳体31的处理，因此可以减少制造成本。
虽然布置O型环46和平垫圈41的凹入部分33形成于发电机壳体31中，但是其可以形成于电动机壳体21中。在这样的情况下，首先将平垫圈41布置在凹入部分33中，然后将O型环46布置成夹在平垫圈41和接合表面31a之间。
此外，本发明的油路结构不仅可以应用于冷却油流经的冷却油路，也可以应用到润滑油或液压油流经的油路。例如，本发明的油路结构可以应用到阀体与滤网之间，所述阀体对供应到自动变速器的油进行液压控制，所述滤网将油盘中的油吸到阀体。当阀体由上、下主体形成时，油路结构可以应用到上、下主体之间的油路。
这里已经描述的实施例仅为示例，不应解释为限制性。本发明的范围在适当考虑对实施例的书面描述的情况下由每个权利要求所确定，并包含权利要求语言的意思或等同范围内的修改。
工业应用性
本发明主要应用到设置在车辆上的油量调节机构。

Claims (3)

1.一种油路结构，包括：
第一构件(21)，具有接合表面(21a)，所述第一构件(21)具有形成在其中并在所述接合表面(21a)上开口的第一油路(22)；
第二构件(31)，具有形成在其中的第二油路(32)，所述第二构件接合到所述接合表面(21a)，使得所述第一油路(22)和所述第二油路(32)彼此连通；
环形密封构件(46)，在所述第一油路(22)和所述第二油路(32)之间进行密封；和
油量调节构件(41)，限制流经油路的油量；其中
所述第二构件(31)具有容纳部分(33)，所述容纳部分(33)形成在邻近于所述接合表面(21a)并处于所述第二油路(32)的路线上的位置处；
在所述容纳部分(33)中布置有所述环形密封构件(46)以及所述油量调节构件(41)，所述环形密封构件(46)与所述接合表面(21a)接触，所述油量调节构件(41)位于所述环形密封构件(46)的与所述接合表面(21a)相反那侧；并且
所述油量调节构件(41)夹在所述环形密封构件(46)和所述第二构件(31)的壁表面(34)之间，所述壁表面(34)限定所述容纳部分(33)。
2.如权利要求1所述的油路结构，其中：
所述环形构件(46)是O型环，所述油量调节构件(41)是垫圈。
3.如权利要求1所述的油路结构，其中：
使供应到电动发电机(200、300)的冷却油流经所述第一油路(22)和所述第二油路(32)。
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