CN104245368A - 具有套筒状气路的轮胎充气系统 - Google Patents

具有套筒状气路的轮胎充气系统 Download PDF

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CN104245368A
CN104245368A CN201380021089.3A CN201380021089A CN104245368A CN 104245368 A CN104245368 A CN 104245368A CN 201380021089 A CN201380021089 A CN 201380021089A CN 104245368 A CN104245368 A CN 104245368A
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rotary seal
inflation system
tire inflation
vehicle
sleeve
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B·V·纳普克
L·G·瑞茨纳
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Dana Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00309—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors
    • B60C23/00336—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors on the axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00309—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors
    • B60C23/00318—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors on the wheels or the hubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00345—Details of the rotational joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00363—Details of sealings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Sealing Devices (AREA)

Abstract

一种车辆的轮胎充气系统包括具有径向外表面和径向内表面的车轴轴颈(12)、具有径向内表面、径向外表面、内侧端部和具有扩口端的外侧端部的套筒(24)。空腔(36)位于车轴轴颈的径向内表面和套筒的径向外表面之间。空腔在内侧端部上与第一转动密封(38)流体连通而在外侧端部与第二转动密封(40)流体连通，其中套筒的扩口端在外侧端部上封闭空腔。

Description

具有套筒状气路的轮胎充气系统
相关申请
本申请要求2012年3月2日提交的美国临时申请第61/605,881号的权益，该申请全部以参见的方式纳入本文。
发明领域
本发明涉及一种用于车辆中的轮胎充气系统的改进结构。
发明背景
本发明涉及车辆的充气系统，且更具体地说，涉及使用车轴轴颈和车轴之间的空腔作为诸如空气的加压流体的通道的轮胎充气系统。
车辆的轮胎充气系统是众所周知的并用于给车辆提供不同类型地形的多功能性或用于减少维护需求。例如，与轮胎充气系统流体连通的多个轮胎的压力可降低以提供给车辆额外的附着摩擦力并可提高以降低车辆的滚动阻力。此外，具有轮胎充气系统的车辆消除了需要定期检查每个轮胎内的压力并消除了当每个轮胎内的压力需要根据要求调整时需要调整每个轮胎内的压力。
轮胎充气系统由于增加了复杂性、间距要求和成本而通常不安装在驱动轴上。例如，除非轮胎充气系统全部安装在与系统连通的车轮上，否则必须采用转动密封以允许泵和包含在轮胎充气系统中的每个轮胎之间的流体连通。当轮胎充气系统使用在驱动轴上时，轴箱可用作加压流体的通道的一部分或通道的路径可在轴箱外面。例如，当驱动轴的轴箱用作加压流体的通道的一部分时，可能需要额外的转动密封以防止干扰差速器用润滑油。或者，当通道的路径可在轴箱外面时，转动密封可变得不必要地大。
将会有利的是，开发一种轮胎充气系统，该轮胎充气系统使用车轴轴颈和车轴之间的空腔作为需要单一转动密封的加压流体的通道，可用于驱动轴并可降低轮胎充气系统的复杂性。
发明内容
车辆的轮胎充气系统包括具有径向外表面和径向内表面的车轴轴颈。系统还包括具有径向内表面、径向外表面、内侧端部和外侧端部的套筒，其中套筒的外侧端部具有扩口端。空腔位于车轴轴颈的径向内表面和套筒的径向外表面之间。空腔在内侧端部上与第一转动密封连通而在外侧端部上与第二转动密封连通。套筒的扩口端在外侧端部上封闭空腔。
当根据附图阅读时，本发明的各种目的和优点对本领域的技术人员来说从以下具体实施方式中变得显而易见。
附图说明
当根据附图考虑时，以上及本发明的其它优点对本领域的技术人员来说从以下具体实施方式中变得显而易见，附图中：
图1是局部剖视侧视图。
具体实施方式
应该理解，除了明确指定相反的地方外，本发明可假设各种可替代性方向及步骤顺序。还应该理解，附图中所示及以下说明书中所述的具体设备和过程是所附权利要求书中限定的发明概念的简单示例性实施例。因此，除非权利要求书明确指出，否则关于所公开的实施例的具体尺寸、方向或其它物理特征不理解应为限制性。
图1示出了根据本发明的实施例的安装到车轴轴颈12和轮毂组件14的轮胎充气系统10。车轴轴颈12包括径向外表面16、径向内表面18。车轴轴颈12是车轴20转动地设置穿过其中的中空构件。车轴轴颈12可整体地由轴箱(未示出)形成或车轴轴颈12可单独地形成并包括车轴组件的一部分。
轮毂组件14以传统的方式使用轴承22绕车轴轴颈12转动地设置。轮毂组件14在本领域中是传统的且众所皆知的。轮毂组件14可构造成保持一个或多个车轮。
如图1所示，套筒24绕车轴20设置在车轴轴颈12内。套筒24是包括径向内表面26、径向外表面28、内侧端部30和外侧端部32的管状、中空细长构件；其中外侧端部32是扩口端的。扩口端外侧端部32的外径大于套筒24的剩余部分34的外径。套筒24的剩余部分34具有基本上恒定的直径，套筒24的剩余部分34的外径小于车轴轴颈12的内径。因此，可以理解，在剩余部分34和车轴轴颈12一起设置时，套筒24的剩余部分34从轴颈12轴向向外延伸。
另外，当套筒24设置在车轴轴颈12中，空腔36位于车轴轴颈12的径向内表面18和套筒24的径向外表面28之间。空腔36的长度基本上等于车轴轴颈12和套筒24的长度。空腔36在内侧端部上与第一转动密封38连通而在外侧端部上与第二转动密封40连通。
第一转动密封38是设置在车轴轴颈12中的环状体。如图1所示，第一转动密封38是由机加工的金属制成的环状体。然而，应该理解，第一转动密封38可具有其它形状且可由其它材料制成。第一转动密封38的径向外表面42与车轴轴颈12的径向内表面18密封地接合。如图1所示，第一转动密封38压合进入由车轴轴颈12的径向内表面18限定的车轴轴颈12的凹处。然而，应该理解，第一转动密封38的径向外表面42可与车轴轴颈12的径向内表面螺纹啮合。另外，应该理解，焊接可形成在第一转动密封38和车轴轴颈12之间，或者密封剂可设置在第一转动密封38和车轴轴颈12之间，或第一转动密封38可与车轴轴颈12形成一体。
第一转动密封38包括形成在其中的密封圈通道44。密封圈通道44是沿轴向方向整体穿过第一转动密封38形成的中空通道。密封圈通道44与主通道46流体连通。密封圈通道44的入口48形成在第一转动密封38的内侧端上。主通道46可与密封圈通道44的入口48配合并成为一体以有助于从主通道46通过入口48进入密封圈通道44的流体连通。
如图1所示，密封圈通道44的出口50形成在第一转动密封38的外侧端和密封圈通道44的径向内表面52上。或者，密封圈通道44的出口50可形成在第一转动密封38的外侧侧面和密封圈通道44的径向内表面52中的一个中。
至少一个环形槽54形成在密封圈通道44的径向内表面52上。如图1所示，密封圈通道44的径向内表面52包括形成在其中的三个环形槽54；然而，应该理解，任意数量的环形槽54可形成在密封圈通道44的径向内表面52上。O形环56设置在每个环形槽54中，然而，应该理解，其它密封可设置成邻近第一转动密封38或与第一转动密封38联接。
第二转动密封40是设置成邻近车轴轴颈12的外侧端或车轮端的环状体。如图1所示，第二转动密封40是由机加工的金属制成的环状体。然而，应该理解，第二转动密封40可具有其它形状且可由其它材料制成。第二转动密封40的内侧表面58的一部分密封地接合车轴轴颈12的外侧表面60的一部分。如图1所示，第二转动密封40压合进入由车轴轴颈12的外侧表面60和套筒24的径向外表面28限定的轴颈车轴12的外侧端。车轴轴颈12的径向内表面18或车轴轴颈12的径向外表面16可与第二转动密封40螺纹啮合。或者，焊接可形成在第二转动密封40和车轴轴颈12之间以及/或密封剂可设置在其之间。第二转动密封40包括在其外侧端的每个上与套筒24的径向外表面28和车轴轴颈12的径向内表面18密封接合的内侧接合表面63，以及从中穿过形成的至少一个环形穿孔62。至少一个环形穿孔62设置允许通过内面70进入转动密封接口构件72的流体连通的径向延伸口。
第三转动密封64设置在第二转动密封的外表面66上并与其动态密封接合。如图1所示，第三转动密封64包括机械地保持在适当位置并设置在环形穿孔62的相对侧上的两个密封68a和68b。第三转动密封64与转动密封接口构件72的内面70固定密封接合；然而，应该理解，第三转动密封64可与转动密封接口构件72的内面70动态密封接合并与第二转动密封40的外表面66固定密封接合，或者第三转动密封64可与转动密封接口构件72的内面70和第二转动密封40的外表面66都动态密封接合。
转动密封接口构件72是固定地设置在轮毂组件14的外侧端和位于车轴20的外侧端上的凸缘80之间的圆盘状构件。转动密封接口构件72由刚性材料制成。转动密封接口构件72中的环形穿孔62与第二通道78对准。应该理解，转动密封接口构件72可与车轴20形成一体。
第二通道78有助于与转动密封接口构件72流体连通。形成在转动密封接口构件72中的第二通道78的外侧端适于例如通过具有形成在其中的螺纹接纳配件。如图1所示，轮胎充气系统10的一部分包括一个第二通道78；然而，应该理解，转动密封接口构件72可包括多个形成在其中的通道。
软管组件(未示出)安装到第二通道78的外侧端。软管组件通常是柔性的并包括接合第二通道78的第一配件，接合轮胎气嘴(未示出)的第二配件，以及软管的长度用于提供第一配件和第二配件之间的流体连通。
如本领域已知的，包括轮缘、密封地设置在轮缘上的轮胎和轮胎气嘴的车轮(未示出)与轮毂组件14联接。轮胎气嘴设置成穿过轮缘的一部分以有助于与轮胎的内部流体连通。轮胎气嘴用作止回阀并在软管组件中的压力大于轮胎中的压力时打开。软管组件的第二配件安装到轮胎气嘴以有助于第二通道78和轮胎内部之间的流体连通。
轮毂组件14和转动密封接口构件72使用多个紧固件(未示出)与车轴20驱动地配合，该多个紧固件穿过在车轴20的外侧端上的凸缘80和转动密封接口构件72。此外，车轴20的外侧端部上的套筒24的带凸缘外侧端部32在外侧端部上封闭空腔36。
主通道46在图1中部分地示出。主通道46形成可将流体从例如诸如泵的加压流体源(未示出)引到主通道46的远端74的流体通路。主通道46的远端74通过密封圈通道44与第一转动密封38流体连通。主通道46可以是刚性通道或柔性通道。如图1所示，主通道46设置成穿过形成在车轴轴颈12中的轴颈孔76。
在使用中，轮胎充气系统的一部分有助于主通道46和软管组件之间流体连通。当流体泵入或压力施加到主通道46时，流体行进穿过或压力施加到第一转动密封38的密封圈通道44、形成在套筒24和车轴轴颈12之间的空腔36、第一转动密封40的环形穿孔62，第三转动密封64的密封68a和68b之间以及形成在转动密封接口构件72中的第二通道78。
当套筒24设置在车轴轴颈12中时，套筒24的径向外表面28密封地接合设置在每个环形槽54中的O形环56且套筒24的扩口端外侧端部32密封地接合在外侧端上封闭空腔36的第二转动密封40。
可将流体泵入或将压力施加到主通道46的泵(未示出)是通过控制器(未示出)根据由与控制器连通的压力传感器(未示出)所确定的轮胎内压力启动。或者，泵可通过包含轮胎充气系统10的车辆的驾驶员定期间隔地手动启动以确保每个车轮根据周围温度变化或根据地形变化保持在所需压力。
根据专利法的规定，已在认为是代表其较佳实施例的实施例中描述了本发明。然而，应该注意，本发明可除如具体所示和所述外实践而不偏离其精神或范围。

Claims (10)

1.一种车辆的轮胎充气系统，包括：
具有径向外表面和径向内表面的车轴轴颈；
具有径向内表面、径向外表面、内侧端部和外侧端部的套筒，所述外侧端部具有扩口端；
位于所述车轴轴颈的所述径向内表面和所述套筒的所述径向外表面之间的空腔，所述空腔在内侧端部上与第一转动密封连通而在外侧端部与第二转动密封连通；
其中所述套筒的所述扩口端在所述外侧端部上封闭所述空腔。
2.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述套筒是管状中空细长构件。
3.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述套筒的所述扩口端外侧端部的外径大于所述套筒的剩余部分的外径，且所述套筒的所述剩余部分具有基本上恒定的直径。
4.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述第一转动密封的径向外表面密封地接合所述车轴轴颈的所述径向内表面。
5.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述第一转动密封包括密封圈通道，所述密封圈通道具有形成在所述密封圈通道的径向内表面上的至少一个环形槽。
6.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述第一转动密封包括与主通道流体连通的密封圈通道，且所述密封圈通道包括在所述第一转动密封的内侧端上的入口和在所述第一转动密封的外侧端上的出口。
7.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述第二转动密封的外侧表面的一部分密封地接合所述车轴轴颈的外侧表面的一部分。
8.如权利要求1所述的车辆的轮胎充气系统，其特征在于，所述第二转动密封包括在其外侧端的每个上与所述套筒的所述径向外表面和所述车轴轴颈的所述径向内表面密封接合的内侧接合表面，以及至少一个环形穿孔。
9.如权利要求1所述的车辆的轮胎充气系统，其特征在于，第三转动密封设置所述第二转动密封的外表面上，且其中所述第三转动密封包括设置在环形穿孔的相对侧上的两个密封。
10.如权利要求1所述的车辆的轮胎充气系统，其特征在于，第二通道与所述第二转动密封中的转动密封接口构件流体连通。
CN201380021089.3A 2012-03-02 2013-03-01 具有套筒状气路的轮胎充气系统 Pending CN104245368A (zh)

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