CN102092375A - 车辆制动*** - Google Patents

车辆制动*** Download PDF

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Publication number
CN102092375A
CN102092375A CN2010102978222A CN201010297822A CN102092375A CN 102092375 A CN102092375 A CN 102092375A CN 2010102978222 A CN2010102978222 A CN 2010102978222A CN 201010297822 A CN201010297822 A CN 201010297822A CN 102092375 A CN102092375 A CN 102092375A
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hydraulic
ewb
actuator
brake
cylinder
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金锺圣
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Hyundai Mobis Co Ltd
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Hyundai Mobis Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/741Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/02Fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/24Electric or magnetic using motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2123/00Multiple operation forces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00Auxiliary mechanisms
    • F16D2127/08Self-amplifying or de-amplifying mechanisms
    • F16D2127/10Self-amplifying or de-amplifying mechanisms having wedging elements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

一种制动装置包括制动衬块和EWB装置,该制动衬块可朝制动盘移动且被构造成接触制动盘,该EWB装置包括楔块和被构造成推压楔块的致动器。楔块被构造成当致动器推压楔块时推压制动衬块。该装置具有液压汽缸,该液压汽缸包括联接到EWB装置且被构造成推压该EWB装置的活塞。楔块被构造成当活塞推压EWB装置时,在致动器不操作的状态下推压制动衬块从而制动衬块可朝制动盘移动。

Description

车辆制动***
技术领域
本发明涉及一种车辆的制动***,详细地,涉及与通过电控制操作的EMB(电子机械制动器)相关的技术。
背景技术
很难制造以40V以上的高电压驱动的马达以提供大的力,使得保证普通EMB保持制动盘所需的制动夹紧力处于与现有技术的液压制动***相同水平。
存在作为一种EMB类型的EWB(电子楔式制动器)以克服上述问题。由于EWB由马达提供使制动楔块在制动楔块和底部楔块之间的辊上沿斜面朝制动盘滑动的力,制动楔块的制动衬块与制动盘之间产生摩擦力。该摩擦力产生自激励,其中制动楔块借助楔块的斜面进一步向制动盘移动,使得马达可能具有相当小的容量以被约12V的电压驱动且能够获得足够的夹紧力。
EWB需要调整底部楔块相对于制动盘的位置的磨损补偿装置以补偿制动衬块的磨损,其中补偿磨损需要马达和多个***部件,使得EWB的体积和重量增加。
此外,包括EWB在内的多数MEB没有机械紧急制动构件,从而很难保证安全。
背景技术部分公开的信息仅是为了加强对本发明一般背景的理解,应该不作为公知信息或该信息形成本领域技术人员已知的现有技术的任何形式的建议。
发明内容
本发明各方面专注于提供一种车辆制动***,通过用简单的结构和构造补偿磨损,能够被制造成具有相当小的重量的体积,并且通过在紧急状况下用机械机构产生制动力,能够在制动中保证足够安全。
本发明的一个方面提供一种车辆的制动***,包括:卡钳体;EWB致动器,所述EWB致动器被安装在所述卡钳体上以能够朝着制动盘进行相对的直线运动;和液压活塞组件,所述液压活塞组件被设置在所述卡钳体和所述EWB致动器之间以通过使EWB致动器相对于所述卡钳体直线运动来挤压所述制动盘。
本发明使得可能通过用简单结构和构造补偿磨损实现具有相当小重量和体积的构造,并且可能通过在紧急状况下用机械机构产生制动力,在制动中保证足够安全。
本发明公开的方法和设备具有其它特征和优势,这些特征和优势将从结合于此的附图和下面具体实施例的详细描述中变得显而易见或得以更详细地阐述,附图与具体实施例的详细描述一起用于说明本发明的原理和方面。
附图说明
为了更好地理解本发明的本质和特征,下面将参考附图进行详细说明,其中:
图1是概念视图,说明根据本发明一个实施例的车辆的制动***的主要构造。
图2是示出图1的构造的透视图。
图3是从图2中去除卡钳体的图。
图4是沿图3的线IV-IV的剖面图。
图5是比较根据本发明一个实施例的制动***的操作的图。
图6是示出本发明另一实施例的图。
图7是示出当液压传感器被设置在液压管道中时的图。
具体实施方式
将对本发明的各实施例进行详细参考,其示例在附图中示出且在下文中描述。虽然将结合典型实施例描述本发明,应该理解本说明书不打算将本发明限制到这些典型实施例中。相反,本发明打算不仅覆盖典型实施例,而且覆盖包括在由所附权利要求限定的本发明的精神和范围内的各种替代、变型、等价物和其它实施例。
参考图1到5,本发明的实施例包括:卡钳体1;EWB致动器5,该EWB致动器被安装在卡钳体1上以能够朝着制动盘3进行相对的直线运动;和液压活塞组件7,该液压活塞组件被设置在卡钳体1和EWB致动器5之间以通过使EWB致动器5相对于卡钳体1直线运动来挤压所述制动盘3。
即,通过安装包括底部楔块9、制动楔块11和驱动制动楔块11的装置的EWB致动器5的整个构造以能够相对于卡钳体1直线运动,且通过允许液压活塞组件7控制EWB致动器5相对于卡钳体1的位置,可能补偿磨损和提供紧急制动力。
为了参考,图1中示出的制动楔块11与内部衬块13和用于驱动制动楔块11的驱动马达15连接,辊17被设置在制动楔块11和底部楔块9之间,且如图2和3所示,卡钳体1的一端连接到与内部衬块13相对的外部衬块19,另一端连接到液压活塞组件7。
在该实施例中,液压活塞组件7包括:汽缸23,该汽缸固定到卡钳体1,相对于EWB致动器5直线滑动,并且具有被施加从外部供应的液压力的液压腔21;柱塞25,该柱塞与EWB致动器5一体形成以通过汽缸23的液压腔21中的液压力直线滑动;和设置在汽缸23与EWB致动器5之间的密封件。
应该理解,柱塞25被布置成当液压力被供应到液压腔21中时将EWB致动器5朝制动盘3移动。
因此,当液体被供应到液压腔21中时,整个EWB致动器5借助施加到柱塞25的压力朝制动盘3移动,且密封件27吸收该相对运动。
密封件27可被装配到形成在汽缸23和EWB致动器5任一方的密封槽中,并且在该实施例中,密封槽被形成在EWB致动器5上。
因此,由于EWB致动器5借助供应到汽缸23的液压腔21的液压力朝制动盘3移动,密封件27在变形的同时吸收EWB致动器5和汽缸23之间的相对运动。此外,当液压力消除时,由于密封件27的弹性恢复,EWB致动器5移动离开制动盘3,使得在制动盘3和EWB致动器之间限定间隙。
当制动衬块29被很大程度地磨损且由于供应到汽缸23的液压力导致的EWB致动器5的相对位移增加时,汽缸23和密封件27之间发生滑动。因此,即使EWB致动器5由于密封件27的弹性恢复而返回,由于制动衬块29的摩擦量,EWB致动器5保留在朝制动盘3移动的位置,使得制动衬块29的磨损被自然地补偿。
液压管道33被连接到汽缸23的液压腔21以将来自液压汽缸31的液压力供应到汽缸23的液压腔21,其中当驾驶员压下制动踏板时该液体汽缸31产生液压力。
在该构造中,液压汽缸31,与典型液压制动***的主汽缸不同,不具有多个压力腔,仅具有一个压力腔和由汽缸和柱塞组成的简单结构,产生比典型液压制动***的主汽缸小的液压力。
此外,与典型液压制动***不同,液压汽缸31仅通过从驾驶员的脚施加的力产生液压力,没有制动助力器,这样不再需要引擎操作典型液压制动***中的制动助力器所消耗的能量,用于制动的能量最小化,重量减轻,从而保持EWB***的优势。
在一个实施例中,EWB本身能够执行ABS(防抱死制动***)和ESC(电子稳定控制)功能。
踏板模拟器被连接到制动踏板,将操作力传递到液压汽缸31,使得驾驶员被从制动踏板提供敏感的制动响应。此外,通过设置踏板传感器可能向ECU(电子控制单元)供应根据制动踏板的操作状态的电信号。
ECU从踏板传感器接收信号且将信息传递给每个车轮ECU以控制制动力,并且能够控制电磁阀35。
即,电磁阀35被设置在液压管道33中以打开/关闭液压管道33且被ECU控制,其中电磁阀35是当不供应控制电流时打开液压管道33的常开型。
因此,即使由于电子故障,用于控制电磁阀35的控制电流没有适当地供应,电磁阀35保持液压管道33打开,当驾驶员压下制动踏板时,通过液压汽缸31产生的液压力,EWB致动器5被压靠到制动盘3,从而进行紧急制动。
即,在图5的比较中,当发生故障或制动衬块29的磨损被补偿时,电磁阀35打开液压管道33,且通过当制动踏板***作时从液压腔31传递的液压力EWB致动器5从卡钳体1朝制动盘3移动,从而产生制动力或制动衬块29的磨损被补偿。此外,在普通制动过程中,电磁阀35关闭液压管道33,使得来自液压汽缸31的液压力不被传递,且通过ECU和车轮ECU根据制动踏板操作状态的控制,EWB独立地对每个车轮产生制动力。
图6示出本发明的另一实施例,其中在车辆所有车轮中仅对两前轮设置液压活塞组件,液压管道被分开,以将液压力从液压汽缸供应到设置到车辆两前轮的制动***的液压活塞组件,且在分开的液压管道的每一个中设置电磁阀。因此,能够分别调整供应到为车辆的两前轮的制动***设置的液体活塞组件的液压力,使得在ABS或ESC操作中可能单独控制每个车轮。
本发明实施例的制动***可使用检测作用到液压活塞组件7中的液压力的液压传感器36,作为用于检测在制动中用制动衬块挤压制动盘的夹紧力的检测构件。
图7示出液压传感器36被设置在液压管道33中作为例子,但是液压传感器36能够被安装在任何位置,只要它能够检测作用到液压活塞组件37中的液压力,例如液压活塞组件7的液压腔21。
因为在本发明的一个实施例中不设置液压管道,需要开发和使用用于检测普通EMB或EWB中存在的夹紧力的独立负载传感器;然而,由于在本发明一个实施例的制动***中,可能用检测作用到液压活塞组件7中的液压力的液压传感器33检测夹紧力,在现有技术充分集成的场合,可能使用液压传感器。此外,由于夹紧力在被填充到液压活塞7的液压腔21中的油吸收的同时被检测,可能稳定地检测夹紧力,而没有来自外部环境的过度影响。
已经为了示例和说明的目的给出了本发明具体典型实施例的前述说明。这些不是穷举,不打算将本发明限制于公开的准确形式,显而易见的是根据上述教导可能进行多种变型和改变。典型实施例被选择和描述以便说明本发明的原理和其实际应用,从而本领域技术人员能够获得和利用本发明各典型实施例以及其各种替代和变型。意图本发明的范围由所附权利要求及其等价物限定。

Claims (13)

1.一种车辆制动***,所述车辆制动***包括:
卡钳体;
EWB致动器,所述EWB致动器被安装在所述卡钳体上且能够朝着制动盘进行相对的直线运动;和
液压活塞组件,所述液压活塞组件被设置在所述卡钳体和所述EWB致动器之间以通过使EWB致动器相对于所述卡钳体直线运动来挤压所述制动盘。
2.如权利要求1所述的车辆制动***,其特征在于,所述液压活塞组件包括:
汽缸,所述汽缸被固定到所述卡钳体,相对于所述EWB致动器直线滑动,并且具有被施加来自外部液压力的液压腔;和
柱塞,所述柱塞被固定到所述EWB致动器以通过所述汽缸的所述液压腔中的所述液压力直线滑动。
3.如权利要求2所述的车辆制动***,其特征在于,进一步包括密封件,所述密封件被装配在形成在所述汽缸和所述EWB致动器任一方的密封槽中。
4.如权利要求3所述的车辆制动***,其特征在于,进一步包括:
液压汽缸,所述液压汽缸通过施加到制动踏板的操作力产生液压力;
液压管道,所述液压管道从所述液压汽缸连接到所述液压腔室,将所述液压力从所述液压汽缸传递到所述液压腔室;和
电磁阀,所述电磁阀打开/关闭所述液压管道。
5.如权利要求4所述的车辆制动***,其特征在于,所述电磁阀被形成为当不供应控制电流时打开所述液压管道的常开型。
6.一种车辆,其特征在于,包括:
两个前轮,每个前轮包括如权利要求1所述的制动***,
液压管道,所述液压管道被构造成将液压力从液压汽缸分别供应到所述车轮的所述液压活塞组件,和
电磁阀,所述电磁阀被分别设置在所述液压管道中以独立控制所述液压力到所述车轮的所述液压活塞组件的供应。
7.如权利要求1所述的车辆制动***,其特征在于,进一步包括液压传感器,所述液压传感器检测作用在所述液压活塞组件中的液压力。
8.一种用于车辆的制动装置,其特征在于,该装置包括:
制动衬块,所述制动衬块可朝制动盘移动且被构造成接触所述制动盘;
EWB装置,所述电子楔块制动装置包括至少一个楔块和致动器,所述致动器被构造成推压所述至少一个楔块,其中所述至少一个楔块被构造成当所述致动器推压所述至少一个楔块时推压所述制动衬块;和
液压汽缸,所述液压汽缸包括活塞,所述活塞联接到所述EWB装置且被构造成推压所述EWB装置,使得当所述活塞推压所述EWB装置时,在所述致动器不操作的状态下,所述EWB装置能够推压所述制动衬块。
9.如权利要求8所述的用于车辆的制动装置,其特征在于,所述制动衬块可沿第一方向朝制动盘移动,其中所述致动器被构造成沿与所述第一方向不同的第二方向推压所述至少一个楔块。
10.如权利要求9所述的用于车辆的制动装置,其特征在于,所述第二方向相对于所述第一方向倾斜。
11.如权利要求9所述的用于车辆的制动装置,其特征在于,所述活塞被构造成沿所述第一方向推压所述EWB装置。
12.如权利要求8所述的用于车辆的制动装置,其特征在于,进一步包括电路,所述电路被构造成操作所述活塞以响应所述制动盘的磨损量推压所述EWB装置。
13.如权利要求8所述的用于车辆的制动装置,其特征在于,进一步包括电路,所述电路被构造成操作所述活塞以响应指示所述致动器操作故障的信号推压所述EWB装置。
CN2010102978222A 2009-12-10 2010-09-30 车辆制动*** Pending CN102092375A (zh)

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