CN105317674B - 液压变量泵、特别是用于机动车转向系统的液压变量泵 - Google Patents

液压变量泵、特别是用于机动车转向系统的液压变量泵 Download PDF

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CN105317674B
CN105317674B CN201510362036.9A CN201510362036A CN105317674B CN 105317674 B CN105317674 B CN 105317674B CN 201510362036 A CN201510362036 A CN 201510362036A CN 105317674 B CN105317674 B CN 105317674B
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cam ring
lid
sensor
sensor device
variable pump
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CN105317674A (zh
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T·诺瓦克
G·德拉斯科维茨
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Pump Technology Solutions PS Co.,Ltd.
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Robert Bosch Automotive Steering GmbH
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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
    • 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
    • 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
    • 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
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2013—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core

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

Abstract

本发明涉及一种液压式的变量泵，特别是用于在机动车中用于使车轮转向的转向系统，该变量泵包括：在泵壳体中设置的转子；包围转子的凸轮环；用于调节凸轮环相对于转子的位置的调节装置；盖子；以及控制板。在盖子(8)中设置用于确定凸轮环(4)位置的传感器装置(7)。

Description

液压变量泵、特别是用于机动车转向系统的液压变量泵
技术领域
本发明涉及一种液压变量泵、特别是用于机动车中用于使车轮转向的转向系统的液压变量泵。
背景技术
用于机动车的转向系统的液压变量泵以叶片泵、转子泵和径向活塞泵的形式已知。为了调节输送流和/或输送压力的大小，已知电动液压的压力调节器，其具有可移动凸轮环的位置的执行器。
由DE10104851A1已知用于确定凸轮环位置的位置传感器，其中测量永久磁铁的磁场，永久磁铁设置在电动机的转子上或者设置在被电动机加载的构件上。
EP0104613B1涉及一种用于变量泵的液压控制系统，其中为了调节变量泵的输送功率，设置带有压力传感器的传感器装置。
在液压范围内测量压力或体积流具有缺点，即油的污物颗粒和不同的温度影响测量精度。
经由探测器或推杆的机械的传感器装置是相对麻烦的并且因此是较贵的且容易受到干扰的。在使用磁性凸轮环的情况下的测量由于在凸轮环上聚集的金属颗粒同样是成问题的。
发明内容
本发明的目的在于如此设计液压变量泵，其包括用于确定凸轮环相对于转子的位置的传感器装置，使得在相对简单的安装的同时达到高的测量精度，其中不应当由于变量泵的运行产生干扰的影响。
根据本发明，该任务通过一种液压的变量泵解决，其用于机动车中用于使车轮转向的转向系统，该变量泵包括：设置在泵壳体中的转子；包围转子的凸轮环；用于调节凸轮环相对于转子的位置的调节装置；盖子；以及控制板。在盖子中设置用于确定凸轮环位置的传感器装置，该传感器装置的传感器在盖子中设置在盲孔中，该盲孔在面向凸轮环的端侧之前结束。
根据本发明的传感器装置的布置通过这种方式不伸入到泵的液压区域内。通过传感器装置在凸轮环的侧向或凸轮环端侧的侧向上布置在两个控制板其中之一中、优选设置在设有控制面的盖子中，可以测量驶过的边缘或覆盖度。
上述现有技术中提到的缺点或影响因素在该测量方法中是没有意义的。此外传感器装置的安装是相对简单的，特别是当其设置在盖子中时。
例如可以使用感应或预紧的磁铁传感器技术作为测量原理。
优选规定，在盖子中设置的传感器装置的至少一个部分在凸轮环的面向盖子的端侧上与凸轮环的外圆周构成传感边缘。
此外优选规定，在盖子中设置的传感器装置的至少一个部分在凸轮环的面向盖子的端侧上部分地覆盖凸轮环的外圆周，该外圆周设有倒角。
此外优选规定，传感器装置设计成感应的传感器装置，在盖子中设置线圈并且凸轮环由铁磁性的材料构成或者在凸轮环的外圆周区域内具有铁磁性的或磁性的嵌入件。
此外优选规定，传感器装置设有磁场传感器。优选传感器装置设计成按照霍尔原理的预紧的磁铁传感器装置，其中磁铁和霍尔传感器设置在盖子中并且凸轮环至少在传感器装置的区域内具有铁磁性的材料。
附图说明
接下来借助于附图在原理上描述本发明的一个实施例。
图1示出具有本发明的传感器装置的叶片泵的半剖视图；
图2示出具有传感器装置的叶片泵的放大的部分视图(在轴向上看具有传感器的盖子)。
具体实施方式
叶片泵基本上对应于已知的构造形式，因此接下来仅仅详细阐述对于本发明的重要的部分。这同样适用于接下来讨论的传感器装置，其同样基本上对于本发明的测量方法是已知的。
叶片泵具有转子1，该转子具有径向可调节的、设置在狭槽中的叶片2。转子1设置在泵壳体3中并且被凸轮环4包围，通过未示出的调节装置能够调节或移动该凸轮环相对于转子1的位置(见图1中的箭头6)。通过凸轮环4相对于转子1的位置调节，改变压力腔或吸入腔5的大小，并且通过这种方式叶片泵的体积流被调节。
传感器装置7具有在盖子8中设置的传感器9，该传感器与设置在凸轮环4上或中的传感器元件10(在图1中仅仅虚线示出)共同作用。如由附图1和2可见，传感器9如此设置在盖子8(该盖子在端侧设置在凸轮环4之前)中，使得该传感器至少以传感器9的一个部段径向向内伸入到凸轮环4的圆周区域内并且与传感器元件10共同作用。根据传感器装置7的类型，传感器元件10可以是凸轮环4上的磁性或铁磁性的嵌入件。同样可能的是，凸轮环4由铁磁性的材料构成或者在传感器9的区域内利用铁磁性的材料进行部分涂层。
出于结构上的原因，将传感器装置7通常设置在盖子8中。当然然而也可以在本发明的范围内的是，传感器装置7安装在一个控制板11上，该控制板如同盖子8设有控制面，该控制板设置在凸轮环4的与盖子8对置的端侧上。
传感器装置7可以例如是感应的传感器装置，其中线圈设置在盖子8中，并且凸轮环由铁磁性的材料构成或者具有铁磁性的或磁性的作为传感器元件10的、在凸轮环4的外圆周区域内的嵌入件，以与盖子8中的传感器共同作用。
此外例如具有磁场传感器(例如根据霍尔原理的预紧的磁铁传感器)的传感器装置也是可能的。在此在盖子8中设置磁铁和霍尔传感器并且凸轮环4至少在传感器装置7的区域内具有铁磁性的材料。
如由附图2可见，传感器9设置在盖子8中的盲孔12中，该盲孔在面对凸轮环4的端侧之前不远处结束。通过这种构造可以取消附加的用于传感器9的密封件。在此仅仅需要的是，盖子8由非磁性的材料例如由铝构成，以使得不会出现对磁力线的损害。
为了测量凸轮环4相对于转子1的位置，例如两种测量方法是可以的。一种方法在于，在凸轮环4移动时凸轮环4以其边缘移动越过传感器9，由此磁场或感应率改变。由该改变而后可以直接测量凸轮环4的位移或其位置。
在第二种测量方法中，凸轮环4在圆周上具有一个朝向盖子8方向的轮廓部、例如倒角13(在图1中仅仅虚线示出)。如果凸轮环4移动，那么因此相对于传感器9的间距改变，这同样导致磁场或感应率的改变。在这种情况下而后将间距改变换算成所实现的运动或移动方向。
在图1中凸轮环4在其内部的位置中示出。虚线14示出外部的终端位置。
根据本发明的变量泵当然不仅仅适合于转向系统的传动装置，而是也可应用在具有自动传动装置的其它领域中。
附图标记清单
1 转子
2 叶片
3 泵壳体
4 凸轮环
5 压力腔或吸入腔
6 箭头
7 传感器装置
8 盖子
9 传感器
10 传感器元件
11 控制板
12 盲孔
13 倒角
14 虚线

Claims (7)

1.一种液压的变量泵，用于机动车中用于使车轮转向的转向系统，该变量泵包括：设置在泵壳体中的转子；包围转子的凸轮环；用于调节凸轮环相对于转子的位置的调节装置；盖子；以及控制板，其特征在于，在盖子(8)中设置用于确定凸轮环(4)位置的传感器装置(7)，该传感器装置(7)的传感器(9)在盖子(8)中设置在盲孔(12)中，该盲孔在面向凸轮环(4)的端侧之前结束。
2.根据权利要求1所述的变量泵，其特征在于，在盖子(8)中设置的传感器装置(7)的至少一个部分在凸轮环(4)的面向盖子(8)的端侧上与凸轮环(4)的外圆周构成传感边缘。
3.根据权利要求1所述的变量泵，其特征在于，在盖子(8)中设置的传感器装置(7)的至少一个部分在凸轮环(4)的面向盖子(8)的端侧上部分地覆盖凸轮环(4)的外圆周，该外圆周设有倒角(13)。
4.根据权利要求1至3中任一项所述的变量泵，其特征在于，传感器装置设计成感应的传感器装置(7)，在盖子(8)中设置线圈并且凸轮环(4)由铁磁性的材料构成或者在凸轮环(4)的外圆周区域内具有磁性的嵌入件(12)。
5.根据权利要求1至3中任一项所述的变量泵，其特征在于，传感器装置(7)设有磁场传感器。
6.根据权利要求5所述的变量泵，其特征在于，传感器装置设计成按照霍尔原理的预紧的磁铁传感器装置，其中磁铁和霍尔传感器设置在盖子(8)中并且凸轮环(4)至少在传感器装置(7)的区域内具有铁磁性的材料。
7.根据权利要求4所述的变量泵，其特征在于，嵌入件(12)是铁磁性的。
CN201510362036.9A 2014-06-26 2015-06-26 液压变量泵、特别是用于机动车转向系统的液压变量泵 Active CN105317674B (zh)

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