公开(公告)号：US20060117843A1

公开(公告)日：2006-06-08

申请号：US10559233

申请日：2004-04-28

申请人： Siegfried Reck ,  Thomas Pehmoller ,  Christoph Bank

发明人： Siegfried Reck ,  Thomas Pehmoller ,  Christoph Bank

IPC分类号： G01L1/04

CPC分类号： B60G17/019 ,  B60G2204/111 ,  B60G2206/42 ,  B60G2400/252 ,  B60G2400/51222 ,  B60G2400/7122 ,  B60G2401/00 ,  B60G2401/26 ,  F16F9/0409 ,  F16F9/3292 ,  F16F2230/08

摘要： The invention relates to a pneumatic spring (2) essentially comprising two terminal elements (4, 6), a pressure-tight roll bellows which is arranged therebetween and made of a flexible elastomeric electroconductive material (14), a strengthening carrier (16) formed by two cord-fibre plies (16a, 16b) which are made of threads (18), crossed at an angle (γ) and vulcanised inside said bellows. In order to determine the height (h) of the spring, in a preferred embodiment, said two cord-carcass plies (16a, 16b) are provided with a certain number of highly conductive threads (18a) which are arranged at the beginning and the end of each ply in a parallel direction to each other, thereby forming two conductive strips (24a, 24b). Said conductive strips (24a, 24b) are disposed oppositely to each other and electrically connected at the end of the roll bellows (8) in such a way that a conductive loop (24) is formed and each strip is used as a branch for an alternating current measuring bridge (28). In such manner, only the filaments (20) of each thread (18) or certain filaments (20a) of the threads (18) can be electrically conductive. In addition to determining the height (h) of the spring in a motor vehicle, the inventive device can be also used for determining air pressure in the bellows of the pneumatic spring (2), the temperature (T) of the bellow walls and other measurable quantities.

摘要翻译： 本发明涉及一种基本上包括两个端子元件（4,6）的气动弹簧（2），设置在其间并由柔性弹性体导电材料（14）制成的耐压辊波纹管，形成的强化载体（16） 通过由螺纹（18）制成的两个帘线纤维帘布层（16a，16b），以角度（γ）交叉并硫化在所述波纹管内部。 为了确定弹簧的高度（h），在优选实施例中，所述两个帘线胎体帘布层（16a，16b）设置有一定数量的高导电线（18a），其布置在 每个帘布层的开始和结束彼此平行，从而形成两个导电条（24a，24b）。 所述导电条（24a，24b）彼此相对地设置并且在辊波纹管（8）的端部处以这样的方式电连接，使得形成导电环路（24），并且每个条带用作支路 用于交流电流测量桥（28）。 以这种方式，只有每个螺纹（18）的细丝（20）或螺纹（18）的某些细丝（20a）可以是导电的。 除了确定机动车辆中的弹簧的高度（h）之外，本发明的装置还可用于确定气动弹簧（2）的波纹管中的空气压力，波纹管壁等的温度（T） 可衡量的数量。