CN104791245A - 叶片泵单元 - Google Patents

叶片泵单元 Download PDF

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Publication number
CN104791245A
CN104791245A CN201410498413.7A CN201410498413A CN104791245A CN 104791245 A CN104791245 A CN 104791245A CN 201410498413 A CN201410498413 A CN 201410498413A CN 104791245 A CN104791245 A CN 104791245A
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Prior art keywords
plate
vane pump
connecting rod
cam ring
pump unit
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塚原義弘
多贺直哉
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Showa Corp
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Showa Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • F04C14/226—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3442—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3446—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

一种组装到壳体内的叶片泵单元，包括：转子；多个叶片；凸轮环；第一板；第二板；连接杆，该连接杆具有固定于第一板的第一端部和从第二板突出的第二端部；和夹子，该夹子防止第二板和凸轮环从连接杆脱落。在将夹子组装到壳体内之前，夹子的保持定位在第一板与凸轮环之间或第二板与凸轮环之间的至少一个位置，在形成间隙的位置。在将夹子组装到壳体内之后，壳体在轴向上插置第一板、凸轮环和第二板，并且第一板和第二板与凸轮环紧密接触。

Description

叶片泵单元
技术领域
本发明涉及一种叶片泵单元。
背景技术
已知叶片泵作为液体压送装置。例如，叶片泵包括叶片泵单元(叶片泵主体)和壳体，该壳体可旋转地容纳叶片泵单元，并且在该壳体中形成吸入路径和排出路径(参见JP-A-2002-21742)。叶片泵单元包括：转子，该转子与动力输入轴一体地旋转；多个叶片，该多个叶片可滑动(可前进并且可后退)地设置在转子中；凸轮环，该凸轮环围绕转子和叶片；一对板(第一板和第二板)，转子和凸轮环在动力输入轴的轴向的相反侧上插置在该一对板之间；和两个连接杆，该两个连接杆在轴向上贯穿凸轮环，并且连接第一板与第二板。每个连接杆的一端部都压嵌到第一板内，并且连接杆的另一端部压嵌到第二板内。
发明内容
由于连接杆的一端部压嵌到第一板内，并且连接杆的另一端部压嵌到第二板内，所以存在压嵌负载和压嵌量可能发生变化的可能性。因此，例如，存在当压嵌量比设计规格大时，即，当连接杆过度压嵌到板内时，第一板和/或第二板变形并且弯曲的问题，从而引起形成于第一板和/或第二板、凸轮环和转子之间的非常小的间隙的变化。具体地，当该非常小的间隙在尺寸上增大超过设计规格时，液体可能泄露。当该非常小的间隙在尺寸上减小超过设计规格时，转子与板之间的滑动阻抗增大，从而转子不太可能旋转，并且转子和板卡在一起。
本发明的目的是提供一种叶片泵单元，该叶片泵单元的板不太可能弯曲。
在解决该问题的本发明的实施例中，提供了一种叶片泵单元，该叶片泵单元组装到叶片泵的壳体。该叶片泵单元包括：转子；多个叶片，该多个叶片能滑动地设置在所述转子中；环形凸轮环，该环形凸轮环围绕所述转子和所述多个叶片；第一板，该第一板安置在所述转子的一端面侧上；第二板，该第二板安置在所述转子的另一端面侧上；连接杆，该连接杆在轴向上贯穿所述凸轮环，并且该连接杆具有：第一端部，该第一端部固定于所述第一板；和第二端部，该第二端部贯穿所述第二板，并且然后从所述第二板突出；和保持器，该保持器保持在所述连接杆的所述第二端部中，并且防止所述第二板和所述凸轮环从所述连接杆脱落。在所述保持器组装到所述壳体之前，所述保持器的保持位置位于所述第一板与所述凸轮环之间或所述第二板与所述凸轮环之间的至少任意一者的形成间隙的位置处。在将所述保持器组装到所述壳体之后，所述壳体在轴向上插置所述第一板、所述凸轮环和所述第二板，并且所述第一板和所述第二板与所述凸轮环紧密接触。
所述叶片泵单元可以包括动力输入轴，该动力输入轴固定在所述电机的中心轴上，并且接收来自外部动力发生装置的动力。
在该构造中，连接杆的第一端部固定于第一板，并且然后凸轮环和第二板顺序贯穿连接杆的第二端部。连接杆的第二端部从第二板突出。此时，由于连接杆未未压嵌到第二板内，所以第二板在板厚方向上(在连接杆的轴向上)不弯曲。
随后，连接杆的第二端部由保持器保持，从而组装叶片泵单元。保持在第二端部中的保持器防止第二板和凸轮环从连接杆脱落。
这里，由于保持器的保持定位在第一板与凸轮环之间或第二板与凸轮环之间的至少一者的形成间隙的位置处，所以在保持器保持在连接杆中的状态下，第一板和第二板不与凸轮环压接。因此，第一板和第二板不在板厚方向上弯曲。
随后，叶片泵单元组装到壳体内，从而得到叶片泵。
当将叶片泵单元组装到壳体内时，壳体在轴向上插置第一板、凸轮环和第二板，并且第一板和第二板与凸轮环紧密接触。因此，液体不太可能从第一板与凸轮环之间以及第二板与凸轮环之间泄露。
在该叶片泵单元中，所述连接杆的所述第二端部可以设置有接触面，该接触面在所述轴向上与所述保持器接触。
在该构造中，保持器与形成在连接杆的第二端部上的接触面产生接触，从而容易地确定保持器位于连接杆的轴向上的预定位置。
在该叶片泵单元中，所述连接杆的所述第二端部可以设置有装接槽，所述保持器装接到该装接槽内，并且该装接槽在所述连接杆的周向上延伸。当在所述轴向上观看时，所述保持器可以具有C状。
在该构造中，当在轴向上观看时具有C状的保持器装接于形成在第二端部中的装接槽内，从而在周向上延伸，从而能够容易地将保持器装接于连接杆。
根据本发明的实施例，能够提供板不太可能弯曲的叶片泵单元。
附图说明
图1是图示出组装了叶片泵单元的状态的根据实施例的叶片泵的前视图。
图2是与沿着图1中的X1-X1线截取的截面对应并且图示出组装了叶片泵单元的状态的根据该实施例的叶片泵的侧截面图。
图3是图示出未组装叶片泵单元的状态的根据该实施例的叶片泵单元的侧截面图。
图4是与沿着图1中的X2-X2截取的截面对应的图示出转子、叶片和凸轮环的各个长度之间的关系的视图。
图5A和5B是根据该实施例的连接杆和夹子的视图，并且分别是侧截面图和前视图。
图6A和6B是根据修改实例的连接杆和夹子的视图，并且分别是侧截面图和前视图。
图7A和7B是根据另一个修改实例的连接杆和夹子的视图，并且分别是侧截面图和前视图。
具体实施方式
将参考图1至5B描述本发明的实施例。
叶片泵的构造
叶片泵200是将油(流体)供给到流体使用装备的设备。下面例示出了液体使用装备：与油压对应的经由缠绕在驱动轮和从动轮周围的带的无级可变缠绕直径改变齿轮比的无级变速器；液压动力转向装置的液压缸等。
叶片泵200是具有恒定排出量的恒定位移泵。在转子10旋转一周的同时，叶片泵200进行两个泵冲程，即，吸入冲程、排出冲程，吸入冲程、并且然后排出冲程。凸轮环30可以是凸轮环30在径向上往复运动的可变型，从而排出量是可变的。在转子10旋转一周的同时，叶片泵200可以进行一个泵冲程或三个以上的泵冲程。多个叶片20可以安置在轴向上的多个段中。
叶片泵200包括：叶片泵单元1(叶片泵主体)，该叶片泵单元1具有大致柱状的外观；和壳体100，该壳体100将叶片泵单元1容纳在其中。
壳体100包括：有底的筒状壳体主体110，该有底的筒状壳体主体110具有浅的深度；和盖120，该盖120覆盖壳体主体110的开口。壳体主体110与盖120通过螺栓131紧固在一起。
壳体主体
下面的部分形成在壳体主体110内部：柱状的容纳室111，该柱状的容纳室111容纳叶片泵单元1；吸入路径112；和排出路径113。
吸入路径112是使得吸入到叶片泵单元1内的油能够从那里贯穿的流动路径。蓄液室(未示出)经由外部吸入流动路径(未示出)连接到吸入路径112的上游端，并且将油临时储存在其中。吸入路径112的下游侧分支成两个路径：第一吸入路径112a和第二吸入路径112b。第一吸入路径112a的下游端与叶片泵单元1的第一吸入口2a连通，并且第二吸入路径112b的下游端与叶片泵单元1的第二吸入口2b连通。
排出路径113是使得从叶片泵单元1排出的油能够从那里贯穿的流动路径。排出路径113的上游侧分支成两个路径：第一排出路径113a和第二排出路径113b。第一排出路径113a的上游端与叶片泵单元1的第一排出口3a连通，并且第二排出路径113b的上游端与叶片泵单元1的第二排出口3b连通。
两个销132(参见图1和2)在轴向上经过盖120和第二板50插入。因此，确定盖120(壳体100)和第二板50(叶片泵单元1)中的每一个的周向位置。
O型环133设置在壳体主体110的底壁部110a与第一板40之间，从而围绕第一排出路径113a和第二排出路径113b。即，O型环133在轴向上插置在底壁部110a与第一板40之间。O型环133密封第一排出路径113a和第二排出路径113b，从而防止油泄露。
叶片泵单元的构造
叶片泵单元1具有大致柱状的外观。如上所述，在转子10旋转一周的同时，叶片泵单元1进行吸入冲程、排出冲程、吸入冲程、并且然后排出冲程。第一吸入口2a、第一排出口3a、第二吸入口2b和第二排出口3b在周向上顺序安置在叶片泵单元1的外表面中(参见图1)。
第一吸入口2a和第二吸入口2b都是油进入到叶片泵单元1的入口，并且在叶片泵单元1的外表面中打开。第一排出口3a和第二排出口3b都是油从叶片泵单元1出来的出口，并且在叶片泵单元1的端面(图2和3中的右端面)中打开。
叶片泵单元1包括：转子10；十片(多个)叶片20；凸轮环30；第一板40；第二板50；两个(多个)连接杆60；和两个夹子71(参见图1至3)。
转子
转子10具有大致柱状。转子10设置有十个(多个)叶片槽11，该多个叶片槽11在径向上从转子10的外周面向内延伸。十个叶片槽11在周向上等间隔安置。
锯齿孔15形成在转子10的中心轴上。轴16的锯齿轴部17嵌合到锯齿孔15内。转子10和轴16经由锯齿连接而结合在一起，并且在图1中的逆时针方向上旋转(参见箭头A1)。轴16吸收来自外部动力发生装置的动力。可选择地，叶片泵单元1可以具有叶片泵单元1不设置有轴16的构造，并且在将叶片泵单元1组装到壳体100内之后，轴16嵌合到锯齿孔15内。
叶片20是分别设置在多个叶片槽11中的滑动片，并且在径向上能够滑动。当转子10旋转时，离心力作用在各个叶片20上，从而使各个叶片20的先端与凸轮环30的凸轮面(内周面)31产生滑动接触。
凸轮环
凸轮环30是具有与转子10同轴安置从而围绕转子10和叶片20厚度的的筒状部件。当在轴向上观看时，凸轮环30的凸轮面31具有大致椭圆形状。
通孔32(参见图3)形成在凸轮环30的内部。通孔32在轴向上延伸，并且在相反侧具有开口。连接杆60贯穿通孔32，并且通孔32的内径比连接杆60的外径大。
转子、叶片和凸轮环的高度(轴向长度)
转子10、叶片20和凸轮环30分别具有L10的高度、L20的高度和L30的高度，并且在轴向上具有“L30＞L20＞L10”的关系(参见图4)。因此，当将凸轮环30插置在第一板40与第二板50之间时，非常小的间隙(空隙)在轴向上形成在转子10、叶片20以及第一板40和/或第二板50之间。因此，在叶片20在径向上相对于第一板40和/或第二板50容易地滑动的同时，使得转子10和叶片20能够旋转。
第一板和第二板
第一板40和第二板50是具有在轴向上将转子10和凸轮环30插置在第一板40与第二板50之间的厚度的板。
第一板40安置在转子10和凸轮环30的端面侧(图2和3中的右侧)上。凹状支撑部41形成在第一板40的中心处，从而支撑轴16的第一端部18。轴16的第一端部18经由轴承18a由支撑部41可旋转地支撑。压嵌孔42形成在第一板40的外周缘部中，并且连接杆60的第一端部压嵌到压嵌孔42内。
第二板50安置在转子10和凸轮环30的另一端面侧(图2和3中的左侧)上。通孔51形成在第二板50的中心处，并且轴16的第二端部19贯穿通孔51，并且经由轴承19a可旋转地被支撑。第二板50的外周缘部设置有通孔52，连接杆60的第二端部62贯穿该通孔52，并且通孔52具有比连接杆60的外径大的内径。通孔52的端部(左端部)的直径增大。容纳部53具有朝着外部开口的孔状，并且容纳夹子71。
连接杆
连接杆60是连接第一板40与第二板50的杆。连接杆60的第一端部61压嵌到压嵌孔42内。连接杆60的第二端部62从第二板50的端部突出。槽63形成在第二端部62中，从而在周向上延伸，并且夹子71装接到槽63内(参见图3和5A)。
夹子71与一端侧上的第一接触面63a和另一端侧上的第二接触面63b接触，该第一接触面63a和第二接触面63b在径向上围绕槽63。即，夹子71插入到槽63内，并且插置在第一接触面63a与第二接触面63b之间，从而在轴向上相对于连接杆60确定夹子71的位置。因此，防止夹子71移动到连接杆60的一端侧。结果，防止第二板50经历凹状弯曲。
夹子
夹子71是保持在第二端部62的槽63中的保持器，并且防止第二板50和凸轮环30从连接杆60脱落。当在轴向上观看时，夹子71具有C状，并且具有使得夹子71的先端部能够打开和闭合的弹性力(参见图5B)。
槽的轴向位置和保持夹子的位置
这里，将描述槽63的轴向位置，即，保持夹子71的位置。
在将夹子71组装到壳体100内之前(参见图3)，夹子71的保持(槽63的轴向位置)设定成定位在第一板40与凸轮环30之间或第二板50与凸轮环30之间的至少一者的形成间隙的位置处。即，在将夹子71组装到壳体100内之前，以使得第一板40和第二板50不与凸轮环30压接，在没有压力施加到凸轮环30的情况下将凸轮环30插置在第一板40与第二板50之间的方式设定保持夹子71的保持位置。因此，在将夹子71组装到壳体100内之前，第一板40和第二板50不在轴向(板厚方向)上弯曲。
相比之下，在将夹子71组装到壳体100内之后(参见图2)，夹子71容纳在孔状容纳部53中，并且壳体主体110和盖120在轴向上将第一板40、凸轮环30和第二板50插置在壳体主体110与盖120之间，并且第一板40和第二板50与凸轮环30产生紧密接触。
组装叶片泵的方法(作用效果)
首先，将描述组装叶片泵单元1的方法。
连接杆60的第一端部61插入并且压嵌到第一板40的压嵌孔42内。例如，(1)当第一端部61与压嵌孔42的底面产生接触时，将第一端部61的压嵌长度设定成变为设计的预定长度。可选择地，(2)用于确定轴向位置的突起形成在第一端部61的外周面上，并且当该突起与第一板40产生接触时，将压嵌长度设定成变为设计的预定长度。
随后，将经由锯齿连接部与转子10接合的轴16的第一端部插入到支撑部41内，从而将装备有叶片20的转子10堆叠在第一板40上。并行地，连接杆60经过围绕转子10的凸轮环30的通孔32插入，从而将凸轮环30也堆叠在第一板40上。
随后，轴16经过第二板50的通孔51插入，并且连接杆60经过第二板50的通孔52插入，从而第二板50堆叠在转子10和凸轮环30上。在该状态下，连接杆60的第二端部62从第二板50突出。
随后，将夹子71装接到连接杆60的槽63内。结果，得到叶片泵单元1。
由于在该状态下装接夹子71，所以防止第二板50、凸轮环30、转子10等从它们各自的位置脱落。因此，在叶片泵单元1的运输期间防止第二板50等从它们各自的位置脱落，并且容易处理叶片泵单元1。
在该状态下，第一板40和第二板50不与凸轮环30压接，并且第一板40和第二板50不弯曲。
随后，将描述组装叶片泵200的方法。
壳体主体110的容纳室111容纳叶片泵单元1。随后，壳体主体110和叶片泵单元1由盖120覆盖，并且壳体主体110与盖120通过螺栓131紧固在一起。
因此，壳体100在轴向上插置叶片泵单元1，即，壳体主体110和盖120将第一板40、第二板50和凸轮环30插置在壳体主体110与盖120之间，并且第一板40和第二板50与凸轮环30产生紧密接触。
结果，得到叶片泵200。
关于制造叶片泵单元1和叶片泵200，例如，在主要工厂(主工厂)中制造叶片泵单元1，并且将叶片泵单元1传送到各地的分工厂之后，能够在各个分工厂中通过将叶片泵单元1组装到壳体100内来制造叶片泵200。此时，由于连接杆60由夹子71保持，所以在叶片泵单元从主工厂运输到各个分工厂期间防止第二板50等从它们各自的位置脱落，并且第二板50也不弯曲。由于分工厂不需要用于组装叶片泵单元1的装备，所以能够在分工厂处节省空间，并且以低成本制造叶片泵200。
修改实例
上面描述了本发明的实施例，本发明不限于该实施例，例如，可以进行下面的修改。
连接杆60和夹子72可以具有如图6A和6B所示的构造。如图6A所示，连接杆60的第二端部62设置有具有减小的直径的阶梯小直径部64，并且小直径部的阶梯面形成与夹子72接触的接触面64a。夹子72具有环板状。多个狭缝在周向上等间隔地形成在夹子72的内周缘部中，从而在径向上向外延伸，并从而将内周缘部分割成多个弹性片72a。当将小直径部64插入到夹子72内时，多个弹性片72a与小直径部64的外周面产生压接，并且夹子72装接于连接杆60。
连接杆60和夹子73可以具有如图7A和7B所示的构造。如图7A所示，插入孔65形成在连接杆60的第二端部62中，从而在轴向上延伸。夹子73包括：插入片73a，该插入片73a插入到插入孔65内；和压接片73b，该压接片73b与第二端部62的外周面压接。

Claims (3)

1.一种组装到叶片泵的壳体的叶片泵单元，该泵单元包括：
转子；
多个叶片，该多个叶片能滑动地设置在所述转子中；
环形凸轮环，该环形凸轮环围绕所述转子和所述多个叶片；
第一板，该第一板安置在所述转子的一端面侧上；
第二板，该第二板安置在所述转子的另一端面侧上；
连接杆，该连接杆在轴向上贯穿所述凸轮环，并且该连接杆具有：第一端部，该第一端部固定于所述第一板；和第二端部，该第二端部贯穿所述第二板，并且然后从所述第二板突出；和
保持器，该保持器保持在所述连接杆的所述第二端部中，并且防止所述第二板和所述凸轮环从所述连接杆脱落，
其中，在将所述保持器组装到所述壳体之前，所述保持器的保持位置位于所述第一板与所述凸轮环之间或所述第二板与所述凸轮环之间的至少任意一者的形成间隙的位置处，并且
在将所述保持器组装到所述壳体之后，所述壳体在轴向上插置有所述第一板、所述凸轮环和所述第二板，并且所述第一板和所述第二板与所述凸轮环紧密接触。
2.根据权利要求1所述的叶片泵单元，
其中，所述连接杆的所述第二端部设置有接触面，该接触面在所述轴向上与所述保持器接触。
3.根据权利要求1或2所述的叶片泵单元，
其中，所述连接杆的所述第二端部设置有装接槽，所述保持器装接到该装接槽内，并且该装接槽在所述连接杆的周向上延伸，并且
当在所述轴向上观看时，所述保持器具有C状。
CN201410498413.7A 2014-01-21 2014-09-25 叶片泵单元 Pending CN104791245A (zh)

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