CN110832220B - 用于减振器的阻尼阀 - Google Patents

用于减振器的阻尼阀 Download PDF

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CN110832220B
CN110832220B CN201880044896.XA CN201880044896A CN110832220B CN 110832220 B CN110832220 B CN 110832220B CN 201880044896 A CN201880044896 A CN 201880044896A CN 110832220 B CN110832220 B CN 110832220B
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valve
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damping
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flow
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H·贝克
K·施米茨
S·卡佩尔
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ZF Friedrichshafen AG
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    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3484—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of the annular discs per se, singularly or in combination
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    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3485—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of supporting elements intended to guide or limit the movement of the annular discs
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    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/3405—Throttling passages in or on piston body, e.g. slots
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    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3481—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by shape or construction of throttling passages in piston
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    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
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    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/516—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement
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    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
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    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0041—Locking; Fixing in position
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3488—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features intended to affect valve bias or pre-stress
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    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/01—Damping of valve members
    • F16K47/011—Damping of valve members by means of a dashpot
    • F16K47/0111—Damping of valve members by means of a dashpot the valve members comprising a plunger sliding within a fixed dashpot
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    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/01—Damping of valve members
    • F16K47/012—Damping of valve members by means of a resilient damping element
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7866—Plural seating

Abstract

本发明涉及一种阻尼阀(1)，其包括带有至少一个用于阻尼介质的流动通道(65)的阻尼阀体(7)，其中在所述流动通道(65)中布置有阀推杆(45)，所述阀推杆与一阀盘(47、51)和一阀座面(49、53)共同作用，其特征在于，所述阀推杆(45)承载另一阀盘(47、51)，该另一阀盘与第二阀座面(49、53)共同作用，其中所述第一阀盘(47)与所述第一阀座面(49)构成带有永久敞开的第一预开口横截面(59)的第一子阀(57)；并且第二阀盘(51)与第二阀座面(53)构成带有第二预开口横截面(63)的第二子阀(61)，这两个子阀构成换向阀，该换向阀取决于穿流方向打开一子阀(57)并且关闭另一子阀(61)。

Description

用于减振器的阻尼阀
技术领域
本发明涉及一种根据权利要求1的前序部分所述的、用于减振器的阻尼阀。
背景技术
由文献DE 10 2015 212 535 A1已知一种用于减振器的阻尼阀，其中阻尼阀体具有流动通道，在所述流动通道中布置有拉杆。该拉杆承载阀盘，所述阀盘相对于阻尼阀体的阀座面预张紧。针对每个穿流方向使用至少一个带有阀盘的流动通道。附加地，用于第一穿流方向的流入通道可以配备有止回阀，从而保留了最小的、也被称为预开口横截面的穿通横截面。对于减振器的某些用途来说，针对每个穿流方向必须存在一与其他穿流方向的预开口横截面不同的预开口横截面。因此，在阻尼阀体中布置有用于两个止回阀的两条流动通道。但是为此使用的、在本领域也被称为“李阀(Lee-Ventil)”的止回阀相对较贵。
发明内容
本发明的目的在于，针对阻尼阀提供一种取决于阻尼介质的穿流方向的预开口横截面。
该目的通过以下方式实现，阀推杆承载另一与第二阀座面共同作用的阀盘，其中，第一阀盘与第一阀座面(49)构成带有永久敞开的第一预开口横截面的第一子阀；并且第二阀盘与第二阀座面构成带有第二预开口横截面的第二子阀，这两个子阀构成换向阀，该换向阀取决于穿流方向打开一子阀并且关闭另一子阀。
其优点在于，所使用的构件一方面非常简单并且另一方面能容易地安装并且能适配任意的特性曲线。基于换向阀的原理针对两个有效的流动横截面仅需要一条流动通道。因此，与现有技术相比节省了用于流动通道的结构空间。
为了简化安装，所述阀推杆可轴向分离地构造，从而阀推杆能够分别使用一体的阀推杆头。
根据一有利的从属权利要求，阀推杆借助于连接套彼此连接。该措施也用于简化阀构件。
对于简单的旋紧安装来说，所述连接套固定在流动通道的内部。这种固定决不是永久性的，而是仅用于安装过程。
在一种优选的实施方式中，阀推杆通过螺纹连接部彼此连接。因此，连接套只要在壳体中保持其位置，直到螺纹连接部啮合在连接套中。之后就完全不需要固定。
替代地，阀推杆能够通过过盈配合彼此连接。于是这样就没有必要考虑螺纹紧固件。
可选地，阀推杆由弹簧组件定位在相对于两个阀座面的初始位置中。由此能够设定优选的运行位置。
在替代技术方案中，所述阻尼阀包括带有用于阻尼介质的至少一个流动通道的阻尼阀体，其中，一阀盘节流针对穿流方向的阻尼介质流。在此，所述阀盘是带有止回阀的止回阀组件的组成部分，其中所述止回阀组件具有针对第二穿流方向的至少另一阀盘，其中所述阀盘至少其中之一确定预开口横截面，并且所述止回阀使两条流动路径在所述阀盘处液压地并联连接。
在这种技术方案中也应用了换向阀的原理，对于换向阀来说仅需要唯一一个流动通道。
在另一设计方案中，所述止回阀组件具有可分离的壳体，在该壳体中止回阀体交替地控制通往阀盘的两条流动路径。这对止回阀的要求相对较低，并且由于分离的壳体例如能够使用在烧结技术上可简单地制造的构件。
为了将止回阀组件简单地安装在流动通道中，所述壳体具有用于至少一个阀盘的导向凸起。
根据一有利的从属权利要求，所述流动通道具有一径向凸起作为用于阀盘的阀座面。该阀座面也用作在流动通道内部的止回阀组件用的支撑面。
优选地，壳体通过阀盘在流动通道中对中。由此沿径向在所述壳体外部提供一流动横截面。
可选地，至少一个阀盘配备有支撑盘。所述支撑盘使阀盘稳定，从而在阀盘中能实现非常小的预开口横截面。
可选地，所述支撑盘在壳体上对中。为此，所述壳体具有锥体区段，该锥体区段形成支撑盘与壳体之间的密封边缘，从而最小化未限定的泄露。
作为用于最优地轴向固定止回阀组件的其他措施，所述支撑盘具有比阀座面的内直径更大的外直径。对于轴向的固定来说，阀盘实际上不承受分力，从而阀盘的尺寸能够非常薄。
为了能够使用总共较大的流入横截面和流出横截面，止回阀组件借助于螺纹环固定在流动通道中。
附图说明
根据以下对附图的描述对本发明进行详细阐述。附图中：
图1是阻尼阀的截面示图；
图2是单个阀的上部截面的俯视图；
图3是图1的细节示图；
图4单独示出了多部件式的阀推杆；
图5示出了具有换向阀的阻尼阀；
图6是相对于图5所示的另外的连接位置。
具体实施方式
图1示出了减振器3内部的、结构形式为活塞杆5上的活塞阀的阻尼阀1，所述活塞杆仅以虚线示出，因为所示出的截面沿径向在活塞杆5外部延伸。所述阻尼阀1包括此外也被称作活塞的阻尼阀体7，该活塞具有至少一个用于在缸体17内部在靠近活塞杆和远离活塞杆的工作腔13、15中的阻尼介质的流动通道9、11。所述活塞7能够与活塞杆5一起沿轴向在缸体17内部移动。在该实施例中，针对两个流动方向在两个工作腔13、15之间分别构造一流动通道9、11，正如概览图2可以看出的那样。原则上当然也能够针对每个流动方向设置多个流动通道9、11。
在每个流动通道9、11中布置有阀推杆19、21，所述阀推杆与阀盘23、25和阀座面27、29共同作用进而针对穿流方向在阻尼阀1内部形成主阻尼阀31、33。
在阻尼介质流入时，阻尼介质从工作腔13、15开始朝向阀盘23、25流动经过流动通道9、11的敞开的端部。在流动通道9、11内部起作用的压力将提升力施加到阀盘23、25上，所述提升力经由阀推杆19、21的头部35、37传递到阀盘上。所述阀盘23、25能从阀座面27、29上升起。在此阀推杆19、21实施推移运动。闭锁弹簧39、41将拉伸力施加到阀推杆19、21上，该拉伸力反作用于流动通道9、11中的运行压力的提升力。
除了两个主阻尼阀31、33之外，所述阻尼阀1具有预开口阀43，这两个主阻尼阀具有结构上相同的构造，但在细节上例如能够具有不同的弹簧参数。所述预开口阀43同样包括阀推杆45，该阀推杆在第一端部处承载用于第一阀座面49的第一阀盘47并且在另一端部处承载与第二阀座面53共同作用的另一阀盘51。阀座面27和53或者说29和49可以、但不必是相同的。第一阀盘和另一阀盘47、51之间的间距大于第一阀座面和第二阀座面49、53之间的间距。因此，带有两个阀盘的阀推杆能够在限制范围内沿轴向相对于阻尼阀体移动，因为存在初始间隙55。
在此，第一阀盘47与第一阀座面49构成带有永久敞开的第一预开口横截面59第一子阀57，并且第二阀盘51与第二阀座面53构成带有第二预开口横截面63的第二子阀61(参见图3)。伴随阀推杆45的推移运动，两个子阀57、61形成换向阀，该换向阀取决于至少一个第三流动通道65的穿流方向打开子阀57、61并且关闭另一子阀57、61。两个预开口横截面59、63大小不同并且能够通过阀盘47、51中的空隙或者通过阀座面49、53中的空隙产生。阀盘47、51之间的间距如此之大，从而阻尼介质能够从其中一个工作腔13、15出发穿过相应贴靠的阀盘47、53的预开口横截面流出到相邻的工作腔中。在此节流阻力由安放在阀座面上的阀盘确定。因此，存在两个取决于方向的预开口横截面59、63，所述预开口横截面不会互相影响。阀盘47、51上的压力条件引起对于阀推杆45来说必需的推移力。沿流入到流动通道65中的方向，压力导致阀盘的关闭运动进而导致预开口横截面产生效果。在阻尼介质的流出侧，压力同样朝向另一工作腔作用到另一阀盘上，但该另一阀盘显示了针对阀推杆的附加的拉伸力。
所述阀推杆45可轴向分离地构造。为此两个单独的阀推杆67借助于连接套69彼此连接。对于安装过程来说，所述连接套69固定在流动通道的内部，例如通过粘接点或者通过连接套69的旋转紧固件固定在流动通道65的内部。当单个阀推杆67通过螺纹连接部71彼此连接时，旋转紧固件是特别有效的。
原则上，只有当预开口横截面59、63处的压力到达限定的水平并且所排挤的阻尼介质的体积流对于预开口横截面59、63来说过大时，两个主阻尼阀31、33才敞开。
在图3所示的实施方式中，阀推杆45由弹簧组件73定位到相对于两个阀座面49、53的初始位置中。为此例如盘形弹簧73插入到阀推杆45的头部35、37与其中一个阀盘47、51之间。在本实施例中还应用支撑盘75。所述盘形弹簧73将阀推杆45预紧到初始位置中。但是仍然实现了阀推杆45的轴向可运动性。更确切地说，通过弹簧组件仅预设了限定的初始位置。
利用图4示例性地解释了，阀推杆19、21、45能够如何通过过盈配合彼此连接。为此，单个阀推杆67具有容纳开口77并且另一阀推杆具有销栓区段79。销栓区段79与容纳开口77形成过盈配合。在该具体的实施例中，在两个单个阀推杆71之间附加地使用螺纹连接部71，以便锁定过盈配合。另一方面，过盈配合与螺纹连接部共同作用引起了紧固功能以防螺纹连接部71的不期望的脱开。
图5同样示出了阻尼阀1的、带有用于控制两个预开口横截面59、63的换向阀的截取区段。所述阻尼阀1的原理与按照图1和图2所示的实施方式相同。不同之处在于，阀盘47、51是带有止回阀83的止回阀组件81的组成部分，所述止回阀使两条流动路径在阀盘47、51处与流动通道65液压地并联连接。
所述止回阀组件81具有可分离的壳体85，在该壳体中，止回阀体87可选地控制通往两个阀盘47、51的两条流动路径。所述止回阀体87例如是球体，该球体可在两个锥形的阀座面89、91之间运动。在此，阀座面89、91的间距也大于止回阀体87的直径。
在壳体85中构造有两条相交的连接通道93、95，其中阀座面89、91位于连接通道93、95的交点处。连接通道93沿流动通道65的轴向方向延伸。所述壳体85双壳式地构造，其中分隔接缝延伸穿过其中一个连接通道93、95。由此能够非常简单地利用成型方法制造所述壳体85。对于连接通道93、95内部的分隔接缝以及对称的结构形式来说，所述壳体85由两个相同的构件半部组成。
所述壳体85具有用于至少一个阀盘47、51的导向凸起97、99。由于壳体的对称的结构形式，存在用于两个阀盘47、51的两个导向凸起97、99。阻尼阀体7中的流动通道65具有一径向凸起101作为用于阀盘47的阀座面。该阀座面用作壳体85在流动通道65内部的支撑面。所述阀盘47、51具有仅略微小于流动通道65的直径的外直径，从而所述壳体85通过阀盘47、51在流动通道65中对中。
至少一个阀盘47、51配备有支撑盘75，从而用于轴向地固定壳体85的张紧力并不取决于阀盘47、51的弹性，其中所述支撑盘75沿径向在内部在壳体85上对中。因此，所述支撑盘75具有比阀座面或者凸起101的内直径更大的外直径。为了轴向地固定止回阀组件81，在流动通道65中使用螺纹环103。
在从工作腔15的方向流入时，止回阀体87在示出的位置中运动并且保持到阀座面89上。阻尼介质能经由第一通道区段105流入到止回阀83的阀座面89并且然后径向地经由连接通道95分布到流动通道65中。但阻尼介质也并行地穿过阀盘51和螺纹环103之间的预开口横截面63流入到流动通道65中。然而，第一通道区段105的横截面比预开口横截面63大许多倍。通过止回阀体87的闭锁部位阻止了止回阀体87那一侧的、穿过第二通道区段107的另一流动路径。由此所有阻尼介质在外侧朝向预开口横截面59流经壳体85，该预开口横截面的尺寸明显比预开口横截面63的尺寸大。这种大小上的差异由在阀盘47中两侧的空隙象征性地示出。因此，有效的预开口横截面由预开口横截面59确定。
沿着按照图6所示的相反的流动方向，止回阀体87闭锁第一通道区段105。阻尼介质经由第二通道区段107重新到达阀座区域中并且继续沿径向向外穿过连接通道93、95到达流动通道65中。在另一流动路径中，阻尼介质经过预开口横截面63，该预开口横截面基于与第二通道区段107相比更小的横截面示出了有效的预开口横截面。
附图标记列表：
1 阻尼阀
3 减振器
5 活塞杆
7 阻尼阀体
9 流动通道
11 流动通道
13 靠近活塞杆的工作腔
15 远离活塞杆的工作腔
17 缸体
19 阀推杆
21 阀推杆
23 阀盘
25 阀盘
27 阀座面
29 阀座面
31 主阻尼阀
33 主阻尼阀
35 阀推杆的头部
37 阀推杆的头部
39 闭锁弹簧
41 闭锁弹簧
43 预开口阀
45 阀推杆
47 阀盘
49 第一阀座面
51 其他阀盘
53 第二阀座面
55 初始间隙
57 第一子阀
59 第一预开口横截面
61 第二子阀
63 第二预开口横截面
65 第三流动通道
67 单个阀推杆
69 连接套
71 螺纹连接部
73 弹簧组件
75 支撑盘
77 容纳开口
79 销栓区段
81 止回阀组件
83 止回阀
85 壳体
87 止回阀体
89 阀座面
91 阀座面
93 连接通道
95 连接通道
97 导向凸起
99 导向凸起
101 径向凸起
103 螺纹环
105 第一通道区段
107 第二通道区段

Claims (7)

1.一种阻尼阀(1)，其包括带有至少一个用于阻尼介质的流动通道(65)的阻尼阀体(7)，其中在所述流动通道(65)中布置有阀推杆(45)，所述阀推杆与一阀盘(47、51)和一阀座面(49、53)共同作用，其特征在于，所述阀推杆(45)承载另一阀盘(47、51)，该另一阀盘与第二阀座面(49、53)共同作用，其中第一阀盘与第一阀座面(49)构成带有第一预开口横截面(59)的第一子阀；并且第二阀盘与第二阀座面(53)构成带有第二预开口横截面(63)的第二子阀，这两个子阀构成换向阀，该换向阀取决于穿流方向打开一子阀(57)并且关闭另一子阀(61)。
2.按照权利要求1所述的阻尼阀，其特征在于，所述阀推杆(45)可轴向分离地构造。
3.按照权利要求2所述的阻尼阀，其特征在于，两个阀推杆借助于连接套(69)彼此连接。
4.按照权利要求3所述的阻尼阀，其特征在于，所述连接套(69)固定在所述流动通道(65)的内部。
5.按照权利要求2所述的阻尼阀，其特征在于，两个阀推杆通过螺纹连接部(71)彼此连接。
6.按照权利要求2所述的阻尼阀，其特征在于，两个阀推杆通过过盈配合(77、79)彼此连接。
7.按照权利要求1所述的阻尼阀，其特征在于，所述阀推杆(45)由弹簧组件(73)定位到相对于两个阀座面(49、53)的初始位置中。
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US11434970B2 (en) 2022-09-06

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