relatively to the intermediate plate 24 and therefore able to rock in any direction relatively to the base plate 22 fixed to the absorber tube 2 similarly to the first embodiment even when a side force is generated as a compressive load which is applied to the compression coil spring 17 such side force is absorbed by the lower sheet 21 rocking in the direction of such side force and there occurs no apprehension that the absorber tube 2 and the absorber rod 3 might be jammed together it should be understood that the base plate 22 and the lower sheet 21 are provided with respective pairs of rubber stoppers 30 wherein the stoppers provided on the bass plate 22 are diametrically opposed to each other on the axis which is orthogonal to the axis on which the stoppers provided on the lower sheet 21 are diametrically opposed to each other according to the third embodiment of the invention as shown in fig5 rollers 34 34 spaced from each other on an axis x u2014 x are held between a base plate 31 rotatably supported around the absorber rod 3 with interposition of the thrust bearing 6 and a support plate 32 which is integral with an upper sheet 33 in the same manner as in the previously described second embodiment similarly rollers 37 37 spaced from each.