CN105508470A - 用于车辆液压制动装置的活塞泵 - Google Patents

用于车辆液压制动装置的活塞泵 Download PDF

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CN105508470A
CN105508470A CN201510646734.1A CN201510646734A CN105508470A CN 105508470 A CN105508470 A CN 105508470A CN 201510646734 A CN201510646734 A CN 201510646734A CN 105508470 A CN105508470 A CN 105508470A
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throttle valve
valve
orifice plate
reciprocating pump
bearing
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CN105508470B (zh
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O·亨尼希
P·施尔内格
J·诺贝格
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Robert Bosch GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F04B11/0033—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a mechanical spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0091—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using a special shape of fluid pass, e.g. throttles, ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • F04B39/1086—Adaptations or arrangements of distribution members the members being reed valves flat annular reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • F04B53/1047—Flap valves the valve being formed by one or more flexible elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1075—Valves; Arrangement of valves the valve being a flexible annular ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0084—Component parts or details specially adapted therefor
    • F04B7/0088—Sealing arrangements between the distribution members and the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0266—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated the inlet and discharge means being separate members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
    • F04B39/1033—Adaptations or arrangements of distribution members the members being disc valves annular disc valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0042—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member
    • F04B7/0049—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member for oscillating distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0042—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member
    • F04B7/0053—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member for reciprocating distribution members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Reciprocating Pumps (AREA)

Abstract

本发明涉及一种用于车辆液压制动装置的活塞泵，具体而言，涉及一种作为滑移控制的车辆液压制动装置的液压泵的活塞泵(1)。活塞泵(1)具有作为节流阀(21)的孔板，在孔板的中心孔中布置有排出阀(13)，并且孔板的内缘在外部固定在活塞泵(1)的衬套底部(5)处，且孔板的外缘以预紧的方式安放在环状的支座(23)上。从活塞泵(1)中挤出的制动液体使孔板状的节流阀(21)从支座(23)提起，以此形成动态节流阀(21)。在孔板状的节流阀(21)中的越过支座(23)的节流通道(26)使得穿流即使在节流阀(21)安放在支座(23)上的情况下也能够实现。

Description

用于车辆液压制动装置的活塞泵
技术领域
本发明涉及一种具有权利要求1的前序部分所述特征的用于车辆液压制动装置的活塞泵。
背景技术
此类活塞泵用于在滑移控制的车辆液压制动装置中输送制动液体，该活塞泵也经常被称作回流泵。活塞泵具有泵活塞，该泵活塞可移动地布置在泵孔中且可由偏心轮驱动成进行往复直线运动，以便以本身已知的方式在车辆制动装置中输送制动液体。偏心轮典型地相对于泵活塞沿径向布置且泵活塞的偏心轮侧的前端贴靠在可旋转地驱动的偏心轮的周边处。多个活塞泵可由一个偏心轮一起驱动。两个活塞泵－对于双回路车辆制动装置的每个制动回路各存在一个活塞泵－经常彼此相对地布置成偏心轮在活塞泵之间。这些活塞泵同样被理解为这样的多活塞泵的泵元件。阀(通常止回阀，其中的一个形成进入阀，并且另一个形成排出阀)控制通过活塞泵的泵流的穿流方向，其中，以泵流表示活塞泵的通过泵活塞的往复运动所产生的穿流。
公开文献DE102011079876A1公开了一种用于车辆液压制动装置的此类活塞泵，该活塞泵具有作为在泵出口中的动态节流阀的孔板。孔板的内缘固定，外缘以预紧的方式安放在环状的支座上。泵流在形成节流阀的孔板处产生压差，其使孔板的外缘从支座提起，从而使得泵流围绕孔板的外缘流动。孔板附加地具有在内缘与外缘之间的较小的节流孔，其由作为静态节流阀的泵流穿流，而与形成节流阀的孔板的外缘是否安放在支座上或是否通过泵流从支座提起无关。
发明内容
具有权利要求1所述特征的根据本发明的活塞泵具有作为动态节流阀的有弹性的孔板，孔板在内缘处或在外缘处进行固定且孔板的另一边缘(也就是说外缘或内缘)安放在环状的支座上。由活塞泵所产生的泵流(以足够的压力为前提)使外缘或内缘从支座提起且围绕孔板流动或穿流孔板，因此孔板用作用于泵流的动态节流阀。根据本发明，孔板和/或支座具有越过支座的节流通道。该节流通道例如是在孔板的安放在支座上的一侧中和/或在支座中的凹口、凹槽或类似物，其由内向外或者相反地越过支座，从而当孔板安放在环状的支座上时，此时同样可实现泵流。节流通道形成静态节流阀。
根据本发明的节流阀能够实现围绕或者通过节流阀的制动液体流在假设静态的、即恒定的泵流的情况下依赖于在节流阀处的压力或压差的至少近似线性的节流阀特征曲线、即近似恒定的比例。
本发明的其他优点是以很低的更改花费用在现有活塞泵中和动态节流阀的成本合适的可制造性。
从属权利要求的对象是在权利要求1中所说明的本发明的有利的设计方案和改进方案。
权利要求6规定，节流通道相对于其水力直径要长。在圆形的横截面的情况下，该水力直径是直径。水力直径通常是在其他方面相同的流动情况的情况下具有与圆形的横截面相同的压力损失的横截面的尺寸。对于矩形横截面而言，水力直径可近似假定为横截面面积和周长的商的四倍，即节流通道的宽度和高度的乘积与总和的商的两倍。优选地，节流通道是其水力直径的至少五倍长(权利要求7)。该设计方案获得至少近似线性的节流阀特征曲线，即，通过节流通道的流量与压差成比例。
附图说明
下面借助在附图中示出的实施方式对本发明作进一步说明。其中：
图1示出了根据本发明的活塞泵在排出阀的区域中的轴向断面；且
图2和3以透视图示出了根据本发明的图1的活塞泵的作为动态节流阀的孔板的两种变体方案。
具体实施方式
图1示出了根据本发明的活塞泵1的远离偏心轮的端部，活塞泵1设置成用于滑移控制的车辆液压制动装置的液压泵。活塞泵1具有衬套2，泵活塞3沿轴向可移动地容纳在衬套中。泵活塞3可利用未示出的可电动地旋转驱动的偏心轮驱动成在衬套2中往复运动。在该实施例中为布置在衬套2中且支撑在衬套底部5处的螺旋压缩弹簧的活塞弹簧4对着未示出的偏心轮的周边加载泵活塞3的从衬套2伸出的端部，该偏心轮处在泵活塞3的背离活塞弹簧4的侧部上。
对于泵入口而言，泵活塞3具有轴向的盲孔6，盲孔通至在泵活塞3的处在衬套2中的、具有阀座7的端部处。在泵活塞3的处在衬套2中的端部处布置有活塞泵1的进入阀8。在本发明的所描述和示出的实施方式中，进入阀8是具有作为闭锁体9的球的受弹簧加载的止回阀，球由在该实施方式中为螺旋压缩弹簧的阀弹簧10加载而抵靠着在泵活塞3的处在衬套2中的端部处的阀座7。
衬套底部5具有中心孔11，中心孔的在衬套底部5的外侧上的通口锥形地实施成阀座12。在衬套底部5的外侧处布置有活塞泵1的排出阀13，该排出阀实施成受弹簧加载的止回阀。止回阀对于活塞泵1的进入阀8和排出阀13而言是非强制性的。排出阀13具有带有径向凸缘15的栓状的闭锁体14，闭锁体具有凸球状的、环状环绕的与阀座12共同起作用的密封面。作为阀弹簧16的螺旋压缩弹簧对着在衬套底部5的外侧处的阀座12加载排出阀13的闭锁体14。阀弹簧16布置在杯形的阀壳17中，阀弹簧16支撑在阀壳中。阀壳17包围闭锁体14地布置在衬套底部5的外侧处。
阀壳17具有径向凸缘18，径向凸缘安放在管状的阀支架20的径向的内凸缘19上，阀支架20放置到衬套2上。在径向凸缘18与衬套底部5之间布置有作为动态节流阀21的有弹性的孔板。孔板状的节流阀21的内缘固定在阀壳17的径向凸缘18与衬套底部5之间。孔板状的节流阀21的内缘具有矩形齿部，矩形齿部的齿22向内伸且略微弯曲(图2、3)，从而齿接合到阀壳17的凸球状的内缘中，由此对孔板21定心。将节流阀21固定在衬套底部5的外侧处的阀壳17同时形成节流阀支架。
孔板状的节流阀21的外缘、准确地说在外缘处的环状区域以预紧的方式安放在阀支架20的内凸缘19的面对衬套底部5的环形梯级部上。该环形梯级部形成用于孔板状的节流阀21的外缘或者外缘区域的支座23。在其中阀壳17的径向凸缘18将节流阀21的内缘固定在衬套底部5处的外部的区域之外，衬套底部5的外侧是略呈锥形的，从而使得节流阀21可弹性变形且由此可从支座23提起。
当泵活塞3将制动液体从衬套2中通过排出阀13挤出时，节流阀21弹性变形。由泵活塞3挤出的制动液体穿流阀壳17的径向凸缘18(径向凸缘为了该目的设有穿口24)至孔板状的节流阀21的背离衬套底部5的侧部，且当压力足够高时制动液体使节流阀的外缘从支座23提起。由泵活塞3挤出的制动液体穿流在节流阀21的外缘或者外缘区域与支座23之间的缝隙(当制动液体使节流阀21的外缘从支座23提起时形成该缝隙)且在节流阀的外缘处围绕孔板状的节流阀21流动。由该处起，制动液体通过在阀支架20中的排出口25从活塞泵1中流出。孔板状的节流阀21形成动态节流阀21，当制动液体压力足以使节流阀21的以预紧的方式安放在支座23上的外缘从支座23提起时，节流阀开启在节流阀21的外缘与支座23之间的节流阀横截面。在节流阀21的外缘与支座23之间的打开的节流阀横截面的大小依赖于制动液体的压力和量。根据本发明的结构得出几乎线性的节流阀特征曲线，即在通过或者围绕节流阀21的制动液体体积流量与在节流阀21处的压差之间的几乎恒定的关系。
孔板状的节流阀21在面对支座23的侧部中具有作为节流通道26的凹口。节流通道26例如可弯曲地延伸，也可多重弯曲地延伸(如在图2中可见的那样)，或是直的(如在图3中可见的那样)。在此，节流通道26可沿径向如在图3中那样或以其他的角度延伸。在图2中，在节流通道在一端处向内弯曲且在另一端处向外弯曲之前，节流通道26在周向方向上延伸经过在支座23内几乎四分之一圆弧的区段。在任何情况下，节流通道26贯穿支座23，也就是说节流通道26在支座23内开始且通到节流阀21的外缘处。当节流阀的外缘安放在支座23上时，制动液体此时同样流动通过节流通道26。节流阀21由此不仅形成用于由泵活塞3从衬套2中挤出的制动液体的静态的节流阀21，而且形成用于由泵活塞3从衬套2中挤出的制动液体的动态的节流阀21，节流阀21抑制到活塞泵1的泵出口中的制动液体流且由此衰减在泵出口中的压力变化，例如压力波动和压力冲击。节流效果如所说明的那样静态地和动态地具有有几乎线性的节流阀特征曲线。
节流阀26相对于其横截面或者其宽度和高度要长。如在图3中可见的那样，沿径向延伸的节流通道26的长度已为其宽度和高度的数倍。如果节流通道26替代地倾斜地布置(未显示)，节流通道变长。还要更长的是弯曲延伸的节流通道26，其在图2中可见且本身可延长直至几乎整个圆周。如果节流通道26是其水力直径的至少五倍长，则实现至少近似线性的节流阀特征曲线、也就是说与在节流阀21处的压差成比例的流量。对于四边形的节流通道26而言，水力直径可近似假定为其横截面面积和其周长的商的四倍，即作为由节流通道26的高度和宽度的乘积与总和得到的商的两倍。根据图2的弯曲延伸的节流通道26远远超过这种情况。
在阀支架20的内凸缘19的背离衬套底部5的侧部上，罩盖状的阀盖27布置在罐状的泵盖28中，泵盖28放置到支架20上且将活塞泵1保持在车辆液压制动装置的滑移控制部的未示出的液压块的筒形孔状的直径阶梯式的容纳部中且将其耐压地密封。
节流通道26可替代设置在形成节流阀21的孔板中如在实施方式中所显示的那样设置在支座23中。同样是可能的是，不仅在孔板状的节流阀21中而且在支座23中设置节流通道26(未示出)。

Claims (8)

1.一种用于车辆液压制动装置的活塞泵，其中，所述活塞泵(1)具有作为动态节流阀(21)的有弹性的孔板，该孔板在内缘处或在外缘处进行固定，且该孔板的外缘或内缘安放在环状的支座(23)上，泵流使孔板从支座提起，其特征在于，所述节流阀(21)和/或所述支座(23)具有越过所述支座(23)的节流通道(26)。
2.根据权利要求1所述的活塞泵，其特征在于，所述活塞泵(1)具有带有孔板状的衬套底部(5)的衬套(2)，该衬套底部的孔(11)覆盖形成所述节流阀(21)的孔板的孔且由所述泵流穿流，在衬套底部的外侧处布置有环状的节流阀支架(17、18)和所述支座(23)，该节流阀支架将形成所述节流阀(21)的孔板的内缘或外缘固定在所述衬套(2)的衬套底部(5)处。
3.根据权利要求1所述的活塞泵，其特征在于，形成所述节流阀(21)的孔板以预紧的方式安放在所述支座(23)上。
4.根据权利要求1所述的活塞泵，其特征在于，所述节流通道(26)是直的。
5.根据权利要求1所述的活塞泵，其特征在于，所述节流通道(26)部分区段地在所述支座(23)的周向方向上延伸。
6.根据权利要求1所述的活塞泵，其特征在于，所述节流通道(26)相对于所述节流通道(26)的水力直径要长。
7.根据权利要求6所述的活塞泵，其特征在于，所述节流通道(26)是所述节流通道(26)的水力直径的至少五倍长。
8.根据权利要求2所述的活塞泵，其特征在于，在所述衬套底部(5)中的孔(11)具有泵阀(13)的阀座(12)，该泵阀布置在所述衬套底部(5)中的孔(11)处。
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