CN102407744A - 包括至少两个安装的密封环的密封环组的汽车限位挡块 - Google Patents
包括至少两个安装的密封环的密封环组的汽车限位挡块 Download PDFInfo
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Abstract
本发明涉及一种汽车限位挡块,所述限位挡块包括一个上保持器(1),一个下保持器(2)和安装在所述保持器之间使其相对旋转的滚动体,所述保持器安装成一起形成至少一个由分别的两个内轴向壁(8a,9a)和外轴向壁(8b,9b)横向限定的环形空间(8,9),所述限位挡块的特征在于它包括轴向安装在带有轴向间隙的所述空间中的至少有两个安装密封环(10)的一组密封环叠加,所述密封环安装在内壁(8a,9a)或外壁(8b,9b)上,与外壁(8b,9b)或内壁(8a,9a)形成径向间隙,从而在所述空间中形成密封挡板。
Description
技术领域
本发明涉及一种汽车限位挡块,特别的结合在汽车转向轮的悬挂支柱中。
本发明适用于包括与汽车车体连接的上保持器和旋转的下保持器的限位挡块,旋转下保持器包括支撑元件,用于悬挂弹簧和安装在所述保持器之间的滚动体进而使其相对旋转。
背景技术
众所周知的是,为了防止在轴承空间的润滑油泄露以及所述空间被外部污染物污染,使用包括柔性密封成分的密封件,其被安装或整合在保持器的一个中从而使其与另外的保持器摩擦接触。
该实施方式尤其存在在保持器的相对旋转中引发摩擦转矩的缺点,从而使在转向轮组件中使用限位挡块是有害的。
为了解决这一问题,文献WO-2009/019340涉及了一种以摩擦接触布置在每个保特器上的密封元件,所述密封元件相对于至少一个保持器可移动安装。这在密封功能和产生的转矩之间,尤其在施加力的作用下引起限位挡块变形时,提供了良好的平衡。
然而,当密封元件径向移动时,这种实施方式存在保持器中径向槽的变形,使得所述保持器的实施方式复杂化,尤其是在所述保持器模制时需要使用移动元件。
此外,在径向槽中移动安装的密封元件限制了所述密封元件的实施方式,尤其是在同时要求被折叠或变形时。
发明内容
本发明的目的是提高现有技术尤其是通过提供实施简单、安装方便的密封限位挡块,同时在密封功能和产生的转矩之间保持最优平衡。
为此,本发明涉及一种汽车限位挡块,所述限位挡块包括一个上保持器,下保持器和布置在上保持器和下保持器之间使其相对旋转的滚动体,所述保持器被布置成一起形成至少一个由分别的两个内轴向壁和外轴向壁横向限定的环形空间,所述限位挡块包括轴向叠加在带有轴向间隙的所述空间中的至少有两个安装密封环的一组密封环,所述密封环安装在内壁或外壁,与外壁或内壁形成径向间隙,从而在所述空间形成密封挡板。
附图说明
本发明的进一步的特征和优点将在后面的说明书中介绍,结合部分示出的所附附图和根据本发明实施例的限位挡块的轴向部分的附图。
图1是依据本发明提出的汽车限位挡块的剖视图。
具体实施方式
在说明书中,术语“空间位置”用在关于限位挡块的轴向旋转(在附图中竖直的表示界面的一边,另一边关于所述轴对称表示)。特别的,术语“内”表示贴近轴的布置,而术语“外”表示远离轴的布置。另外,术语“上”和“下”分别是指图中限位挡块的布置。
汽车轮,尤其是转向轮,通过支撑柱安装在底盘上使本体相对于地面悬吊。为此,支撑柱通常包括减震器,悬挂弹簧和上面设置有所述弹簧的限位挡块。
参考附图,实施例描述了限位挡块包括与车体连接的固定的上保持器1和旋转的下保持器2,旋转的下保持器包括用来悬挂弹簧和滚动体(未示出)的支撑件3,所述滚动体被设置在所述保持器之间使其围绕轴相对旋转。由此,当弹簧被压缩和被放松时,在彼此上的弹簧圈数的缠绕被改变,引起下保持器2的旋转。此外,锁定车轮也引起下保持器2的旋转。
在所示的实施例中,上保持器1和下保持器2每个都包括一个尤其是用扣片制成的垫片4,5,它们为滚动体提供了相应的上支承和下支承。
限位挡块进一步包括两个衬部分6,7,尤其是由刚性热塑性材料,例如聚酰胺6.6模制而成。这些部分分别是,在上垫片4上的插入底盘和所述上垫片之间的连接盖6和在下垫片5下的连接支撑元件7,所述支撑元件包括弹簧支撑件3。如果需要的话,这些衬部分6,7使其能够吸收来自弹簧和限位挡块的力。
在所示实施例中,支撑元件7是由盖6包围从而组成两个相对应的内环形空间8和外环形空间9。每个环形空间8,9由分别的两内壁8a,9a和外壁8b,9b横向限定。内环形空间8的内壁8a和外壁8b在盖6和支撑元件7上形成,外环形空间9的内壁9a和外壁9b在支撑元件7和盖6上形成。尤其是,环形空间8,9有径向间隙从而使支撑元件7可以相对于盖6彼此之间无干扰地旋转。
限位挡块包括轴向叠加在带有轴向间隙的环形空间8,9之中的至少有两个安装密封环10的一组密封环。特别的,密封环10有可能,尤其是,由一种刚性聚合材料例如聚乙烯、聚丙烯、聚酰胺6,6.6,11或12、聚甲醛(POM)模制而成。
在所示实施例中,两个环形空间8,9与两个密封环10的一组密封环配合安装从而密封限位挡块的两边。而现有技术中,有可能只有内环空间8或者外环空间9和密封环10的一组配合安装,另外一个可选择地与密封装置配合安装。
密封环10安装在内壁8a,9a或外壁8b,9b,与外壁8b,9b或内壁8a,9a形成径向间隙,从而在环形空间8,9中形成密封挡板。特别地,挡板安装在限位挡块上从而使其可能不受盖6或/和支撑元件7的限制,尤其是通过不需要使用用于径向槽变形的移动元件。
在实施方式的一个实例中,一组密封环10的轴向间隙可能在1.2到2.4mm之间,所述密封环之间的径向重叠大概在0.8到1.6mm之间。
在所示实施例中,上环10a连接到支撑元件7上,下环10b连接到盖6上。在未图示的可替换的实施例中,一组密封环可能包括多于两个密封环10的一叠,所述密封环交替安装在轴向壁8a,8b;9a,9b从而增加形成挡板的弯曲。
有利的,至少一个密封环10可选择轴向运动地安装在轴向壁8a,8b;9a,9b上。特别的,尤其是在与支撑元件7有关的盖6的变形作用下,两个密封环10可在其相应的安装壁上轴向运动,所述变形作用由施加到作为使用部分的限位挡块的机械应变产生。
由此,可以将由挡板提供的密封功能与由密封环10相对于至少一个保持器1,2的可选择运动产生的转矩限制结合起来。而且,密封环10的运动限制其磨损从而防止其下面挡块变形的阻塞风险。
在所示实施例中,每个环10在轴向壁8a,8b,9a,9b上有连接表面11,所述表面的直径大致等于所述壁的直径以便于使所述壁上的所述表面能够轴向滑动。
更进一步,支撑元件7有两个分别在环形空间8,9下轴向延伸的延伸部7a,7b以便于保持一组密封环10在所述空间内。除了密封环10的轴向挡块功能,每个延伸面7a,7b也面向盖6减小间隙地布置以限制每个环形空间8,9的污染物的进入。在未图示的可替换实施例中,至少一个延伸部可以在盖6上形成从而保持一组密封环10和/或与支撑件7形成减小的间隙。
此外,连接表面11有倾斜的几何形状从而减小轴向壁8a,8b;9a,9b连接处的干扰。这适合轴向运动和密封环10相对于安装壁8a,8b;9a,9b的枢转运动。
所示限位挡块通过将一组密封环10叠置在支撑元件7上而安装,上环10a的表面11连接到所述支撑元件的轴向壁8b,9a上。盖6安装在支撑元件7上,支撑元件连接到在所述盖的轴向壁8a,9b上的下环10b的表面11上。特别的,制作的接头不需要密封环10的伸展从而不需要限制选择制作所述环的材料。
在这个实施例中,一组密封环10的直径是相似的,可以将其设想成十分简单的方法,例如一组密封环10不是相同的颜色和/或有一个记号取决于其是否是上环10a或下环10b。这使密封环10是可辨别的从而限制了在支撑元件7上将其反向安装的可能性。
Claims (10)
1.汽车限位挡块,所述限位挡块包括一个上保持器(1),一个下保持器(2)和布置在所述上保持器和下保持器之间使其相对旋转的滚动体,所述上保持器和下保持器被布置成一起形成至少一个由分别的两个内轴向壁(8a,9a)和外轴向壁(8b,9b)横向限定的环形空间(8,9),所述限位挡块的特征在于包括轴向叠加在带有轴向间隙的所述空间中的至少有两个安装密封环(10)的一组密封环,所述密封环被安装在内壁(8a,9a)或外壁(8b,9b)上,与外壁(8b,9b)或内壁(8a,9a)形成径向间隙,从而在所述空间中形成密封挡板。
2.如权利要求1所述的限位挡块,其特征在于至少一个密封环(10)安装在选择轴向运动的轴向壁(8a,8b;9a,9b)上。
3.如权利要求2所述的限位挡块,其特征在于所述密封环(10)有在轴向壁(8a,8b;9a,9b)上的连接表面(11),所述连接表面的直径与所述轴向壁的直径大致相同以使在所述轴向壁上的所述连接表面能够轴向滑动。
4.如权利要求3所述的限位挡块,其特征在于所述连接表面(11)有可以减少轴向壁(8a,8b;9a,9b)上的接头干涉的倾斜几何形状。
5.如权利要求1-4所述的限位挡块,其特征在于至少一个保持器(1,2)有一个在环形空间(8,9)下延伸的延伸部(7a,7b)以保持所述一组密封环(10)在所述空间中。
6.如权利要求5所述的限位挡块,其特征在于所述延伸部(7a,7b)以减小间隙布置在与其它保持器(2,1)相对的位置以限制污染物进入环形空间(8,9)中。
7.如权利要求1-6所述的限位挡块,其特征在于所述限位挡块分别有两个内环空间(8)和外环空间(9),每个所述内环空间和外环空间装有一组密封环(10)。
8.如权利要求1-7所述的限位挡块,其特征在于所述一组密封环(10)包括可视键槽元件。
9.如权利要求1-8所述的限位挡块,其特征在于所述上保持器(1)和下保持器(2)各包括一个为滚动体提供相应下支承和上支承的垫片(4,5),所述限位挡块进一步包括两个衬部分,一个在上垫片(4)上的连接盖(6)和一个在下垫片(5)下的连接支撑元件(7),所述环形空间(8,9)被设置在所述盖和所述支撑元件之间。
10.如权利要求1-9所述的限位挡块,其特征在于所述密封环(10)由刚性聚合材料制成。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1002714A FR2961747B1 (fr) | 2010-06-29 | 2010-06-29 | Butee de suspension de vehicule automobile comprenant un ensemble d'au moins deux anneaux d'etancheite rapportes |
FR10/02714 | 2010-06-29 |
Publications (2)
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CN102407744A true CN102407744A (zh) | 2012-04-11 |
CN102407744B CN102407744B (zh) | 2016-12-14 |
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WO2009019340A2 (fr) * | 2007-06-29 | 2009-02-12 | Snr Roulements | Butée de suspension comprenant un élément d'étanchéité mobile |
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EP0296960A1 (fr) * | 1987-06-23 | 1988-12-28 | S.N.R. Roulements | Roulement axial, notamment pour suspensions à amortisseur de véhicules automobiles |
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Also Published As
Publication number | Publication date |
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EP2402181B1 (fr) | 2013-06-12 |
JP2012013228A (ja) | 2012-01-19 |
FR2961747A1 (fr) | 2011-12-30 |
EP2402181A1 (fr) | 2012-01-04 |
FR2961747B1 (fr) | 2012-08-10 |
KR20120001691A (ko) | 2012-01-04 |
RU2011126294A (ru) | 2013-01-10 |
BRPI1102695A2 (pt) | 2012-11-20 |
US20110317954A1 (en) | 2011-12-29 |
RU2562012C2 (ru) | 2015-09-10 |
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