CN104813030A - 电动机驱动的机动车真空泵和用于机动车真空泵的驱动轴 - Google Patents

电动机驱动的机动车真空泵和用于机动车真空泵的驱动轴 Download PDF

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CN104813030A
CN104813030A CN201380061386.0A CN201380061386A CN104813030A CN 104813030 A CN104813030 A CN 104813030A CN 201380061386 A CN201380061386 A CN 201380061386A CN 104813030 A CN104813030 A CN 104813030A
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vacuum pump
motor vehicle
vehicle vacuum
rotor
axle head
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丹尼尔·齐尔
弗雷迪·舍恩瓦尔德
卡斯滕·什采斯尼
本亚明·皮尔多克
迪特马尔·默泽
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Magna Dynamical System Ahmedabad Huo Mubao Co Ltd
ixetic Bad Homburg GmbH
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Magna Dynamical System Ahmedabad Huo Mubao Co Ltd
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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0078—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • 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
    • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
    • F01C17/066—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3448—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member with axially movable vanes
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/04—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow radial displacement, e.g. Oldham couplings
    • 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
    • F04C2240/60—Shafts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

本发明涉及一种电动机驱动的机动车真空泵(1)，所述机动车真空泵具有尤其双重支承的驱动轴(3)，所述驱动轴以轴端(5；35；45)延伸到转子(8)中，所述转子与所述轴端抗扭地连接。所述轴端在转子中具有定心区域(26；36；46)，所述定心区域用于转子的定心，而不在轴向方向上引导转子。

Description

电动机驱动的机动车真空泵和用于机动车真空泵的驱动轴
技术领域
本发明涉及一种电动机驱动的机动车真空泵，所述机动车真空泵具有尤其双重支承的驱动轴，所述驱动轴以轴端延伸到抗扭地与所述轴端连接的转子中。
背景技术
从国际公开文献WO 02/099300 A1中已知一种用于借助于至少一个带动元件传递在轴和轮毂之间的扭矩的轴-轮毂连接，其中将在轴和轮毂之间和/或在轴和带动元件之间和/或在轮毂和带动元件之间的在轴向方向上的接触面最小化。轴能够在轮毂的区域中在其外环周上球形地构成。
发明内容
本发明的目的是，尤其在使用寿命和/或在制造成本方面改进电动机驱动的机动车真空泵，所述机动车真空泵具有尤其双重支承的驱动轴，所述驱动轴以轴端延伸到转子中，所述转子与所述轴端抗扭地连接。
所述目的通过具有尤其双重支承的以轴端延伸到与所述轴端抗扭地连接的转子中的驱动轴以下述方式实现：轴端在转子中具有定心区域，所述定心区域用于转子的定心，而不在轴向方向上引导转子。术语轴向关于驱动轴或转子的旋转轴线。轴向表示在驱动轴或转子的旋转轴线的方向上或平行于驱动轴或转子的旋转轴线。径向意味着横向于轴的或转子的旋转轴线。通过定心，转子在径向方向上相对于驱动轴定位。在此，定心区域有利地构成为，轴端在转子中能够构成翻倒或摆动运动的形式或能够置于倾斜。驱动轴优选借助于两个轴承支承在电动机上，所述电动机用于驱动机动车真空泵。通过根据本发明的定心区域，能够径向地非常精确地引导转子。通过在径向方向上精确的引导能够将在轴端和转子之间在径向方向上的间隙减小到近似为零。由此，能够保持将不期望的转子径向间隙保持得小，进而将在机动车真空泵的抽吸侧和压力侧之间的不期望的泄漏流保持得小。由于制造公差和/或安装公差以及变形，例如由于工作负荷，能够出现在轴的轴线和转子纵轴线之间的不期望的角误差。这意味着，轴的轴线通常不精确地平行于转子纵轴线或与转子纵轴线同轴。由公差引起的角误差在转动的驱动轴中造成，出现转子相对于驱动轴的摆动。否则，需要转子在壳体中明显更大的轴向间隙，这也是不期望的。此外，可能出现转子在壳体中增强的碰撞，这同样是不期望的。通过根据本发明的定心区域，转子不刚性地与轴端连接。由此能够实现由公差引起的摆动运动。由此，能够显著减少在机动车真空泵的运行中的损耗。此外，能够有利地允许更大的制造和/或安装公差。
电动机驱动的机动车真空泵的一个优选实施例的特征在于，轴端在定心区域中球形地构成。由此，特别有利地能够实现轴端在定心的转子中的倾斜、翻倒或摆动。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，轴端在定心区域中以定心直径近似无间隙地设置在转子凹部中。转子凹部有利地构成为在转子中的中央孔。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，轴端的定心直径关于转子的在轴向方向上的伸展尺寸基本上居中地设置在转子中。所述设置方式证实为在由制造引起的安装公差方面是特别有利的。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，机动车真空泵构成为干式的。干式运转尤其意味着不输送润滑剂。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，机动车真空泵构成为具有至少一个叶片的叶片泵。至少一个叶片在转子中引导。至少一个叶片以其叶片端部或以其安装在叶片端部上的罩从内部贴靠在毂轮廓(Hubkontur)上。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，转子凹部构成为穿通孔或盲孔。转子凹部有利地构成为在转子中的中央穿通孔或盲孔。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，轴端在定心区域中，沿纵剖面观察，凸出地弯曲。在此，有利地选择弯曲半径，使得轴端能够在转子凹部中摆动地运动或置于倾斜。由此，在轴端上定心的转子能够实现在在机动车真空泵的壳体中的由公差引起的补偿运动。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，在纵剖面中观察，轴端在定心区域中径向向外由两个圆弧限界。圆弧凸出地弯曲并且有利地具有相同的弯曲半径。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，轴端在定心区域中具有球的构型。这样，球的半径与转子凹部的和轴端的尺寸相配合，使得驱动轴能够充分置于倾斜或摆动。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，轴端在其自由端部上抗扭地与转子连接。通过抗扭的连接能够将驱动机动车真空泵所需的驱动扭矩从驱动轴传递到转子上。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，轴端借助于滑块联轴器(Oldham-Kupplung)与转子抗扭地连接。通过滑块联轴器能够以简单的方式和方法展现抗扭的连接，使得驱动轴与轴端相对于转子置于倾斜或能够执行在转子中的摆动运动。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，转子在轴向方向上设置在两个侧面之间。侧面基本上垂直于轴的或转子的旋转轴线延伸。通过侧面将转子在轴线方向上引导。
电动机驱动的机动车真空泵的另一优选的实施例的特征在于，定心区域在轴向方向上具有的伸展尺寸是转子的在轴向方向上的伸展尺寸的大约一半。定心区域的定心直径有利地设置在转子的中部。定心区域的定心直径有利地设置在转子的中部。在此，术语中部关于转子在轴向方向上的伸展尺寸。
本发明还涉及一种用于前述机动车真空泵的驱动轴。具有定心区域的驱动轴能单独地购买。
附图说明
本发明的其他优点、特征和细节从下文中得到，其中参照附图详细描述不同的实施例。附图示出：
图1示出根据本发明的机动车真空泵的组件的纵剖面；
图2示出图1中的组件的分解图；
图3示出根据本发明的机动车真空泵的极其简化的纵剖面图；以及
图4示出与图3中类似的实施例。
具体实施方式
在图1和2中以两个不同的视图示出电动机驱动的机动车真空泵1。机动车真空泵1由(未示出的)电动机驱动并且构成为干式的。机动车真空泵1的驱动轴3在电动机中双重地支承。
轴端5从驱动轴3延伸到机动车真空泵1的转子8中。转子8为了容纳轴端5具有转子凹部10，所述转子凹部构成为中央孔形式的穿通孔。
转子8为了引导(未示出的)叶片配设有总共五个叶片狭槽11至15。具有转子8和叶片的机动车真空泵1也称作叶片泵。叶片泵的一般的构型和功能例如在国际公开文献WO 2004/074687 A2和WO2011/134448 A2中描述。
机动车真空泵1的驱动轴3在轴端5的自由端部18上借助于滑块联轴器20与转子8抗扭地连接。滑块联轴器20包括联轴器元件22，所述联轴器元件抗扭地插到轴端5的构成为有两个平面的自由端部18上。由此，实现在轴端5的自由端部18与耦联元件22之间的抗扭的连接。
此外，耦联元件22为了与转子8抗扭地连接而容纳在转子8的耦合凹部24中。尽管有在轴端5的自由端部18之间的抗扭的连接，已知的滑块联轴器20能够实现将驱动轴3相对于转子8倾斜设置。由此，能够在机动车真空泵1工作时实现驱动轴3相对于转子8的摆动运动形式。
根据本发明的一个主要的方面，所述摆动运动能够通过定心区域26实现，所述定心区域例如构成在轴端5上的转子8的大致中部。在此，术语中部是关于转子在轴向方向上的伸展尺寸。轴向意味着在驱动轴3的纵轴线或旋转轴线的方向上。
除了由公差引起的角误差之外，驱动轴3的纵轴线或旋转轴线基本与转子8的旋转轴线重合。在定心区域26中，驱动轴3的轴端5球形地构成。通过球形的构型方式能够在轴端5和转子凹部10之间的沿径向方向的间隙非常小的情况下确保驱动轴3相对于转子8的足够的角活动性。
在图3中指明两个侧面31、32，在所述两个侧面之间将转子8在轴向方向上引导。与所示出的不同的是，转子8基本上近似无间隙地贴靠在侧面31、32上。轴端35在定向区域36中具有球38的构型。轴端35在定心区域36中的球形的构造能够特别有利地实现：在驱动轴3和转子8之间的间隙在径向方向上能够近似为零，而驱动轴3在转子8中的摆动灵活性不受限制。
在图4中，驱动轴3的轴端45在定心区域46中球形地构成。通过球形的构成方式，能够降低面挤压，尤其降低在轴端45和转子8之间的赫芝挤压(Hertz’sche Pressung)。然而，借助于在轴端45和转子8之间的非常小的间隙能够确保驱动轴3相对于转子8的足够的角活动性。
轴端45在中央区域46中凸出地弯曲。在纵剖面中，定心区域46由两个圆弧48、49限界。由此，轴端45在中央区域46中得到球形的构型。
附图标记列表
1   机动车真空泵
3   驱动轴
5   轴端
8   转子
10  转子凹部
11  叶片狭槽
12  叶片狭槽
13  叶片狭槽
14  叶片狭槽
15  叶片狭槽
18  端部
20  滑块联轴器
22  耦联元件
24  耦合凹部
26  定心区域
31  侧面
32  侧面
35  轴端
36  定心区域
38  球
45  轴端
46  定心区域
48  圆弧
49  圆弧

Claims (16)

1.一种电动机驱动的机动车真空泵(1)，所述机动车真空泵具有尤其双重支承的驱动轴(3)，所述驱动轴以轴端(5；35；45)延伸到转子(8)中，所述转子与所述轴端(5；35；45)抗扭地连接，
其特征在于，所述轴端(5；35；45)在所述转子(8)中具有定心区域(26；36；46)，所述定心区域用于所述转子(8)的定心，而不在轴向方向上引导所述转子(8)。
2.根据权利要求1所述的电动机驱动的机动车真空泵，其特征在于，所述轴端(5；35；45)在所述定心区域(26；36；46)中球形地构成。
3.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述轴端(5；35；45)在所述定心区域(26；36；46)中以定心直径近似无间隙地设置在转子凹部(10)中。
4.根据权利要求3所述的电动机驱动的机动车真空泵，其特征在于，所述轴端(5；35；45)的所述定心直径关于所述转子(8)的在轴向方向上的伸展尺寸基本上居中地设置在所述转子(8)中。
5.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述机动车真空泵(1)构成为干式的。
6.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述机动车真空泵(1)构成为具有至少一个叶片的叶片泵。
7.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述转子凹部(10)构成为穿通孔。
8.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述转子凹部(10)构成为盲孔。
9.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，在纵剖面中观察，所述轴端(5；35；45)在所述定心区域(26；36；46)中凸出地弯曲。
10.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，在纵剖面中观察，所述轴端(45)在所述定心区域(46)中径向向外由两个圆弧(48，49)限界。
11.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述轴端(35)在所述定心区域(36)中具有球的构型。
12.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述轴端(5)在其自由端部(18)上与所述转子(8)抗扭地连接。
13.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述轴端(5)借助于滑块联轴器(20)与所述转子(8)抗扭地连接。
14.根据上述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述转子(8)在轴向方向上设置在两个侧面(31，32)之间。
15.根据所述权利要求中任一项所述的电动机驱动的机动车真空泵，其特征在于，所述定心区域(26)在轴向方向上具有的伸展尺寸是所述转子(8)在轴向方向上的伸展尺寸的大约一半，然而至少为0.5mm。
16.用于机动车真空泵(1)的驱动轴，所述机动车真空泵根据上述权利要求中任一项所述。
CN201380061386.0A 2012-12-04 2013-11-19 电动机驱动的机动车真空泵和用于机动车真空泵的驱动轴 Pending CN104813030A (zh)

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