| 摘要 |
691,303. Resilient mountings. NEIDHART, H. Sept. 21, 1949 [Sept. 23, 1948], No. 24270/49. Class 108 (iii). In a resilient support or buffer comprising relatively axially movable male and female members separated by non-adherent resilient bodies, the male and female members have respectively at least two axially separated sets of surfaces, each set comprising at least two surfaces of the male member disposed on opposite sides of the axis and opposed to correspondingly disposed surfaces of the female member to form two or more pairs of opposed surfaces of the male and female members respectively, the surfaces of the several sets being oblique to the axis and diverging from the axis towards the same end of the support, separate resilient bodies being disposed between the surfaces of the pairs of opposed surfaces in non-adherent rolling engagement therewith, so that relative axial movement of the male and female members under variation of axial load applied to them is permitted by elastic deformation of the resilient bodies as they are rolled between the surfaces of the pairs. In the arrangement according to Fig. 1, in which resilient rollers 3a and 3b are disposed between surfaces 2a, 2b and 4a, 4b of male and female members respectively, the male and female members are formed with stop portions 6 to limit the rolling of the rollers, and relative movement of the members under axial load. In another arrangement, Fig. 3 (not shown), two constituent parts of the female member which provide the surfaces 4a, 4b in the Fig. 1 arrangement are separate and may be held together by a common base-plate or on plates at the front and rear thereof. The female member may, however, be embraced by a tubular casing which includes a set-screw by which the rollers may be initially compressed. In a modification, Fig. 4 (not shown), the male member is of axially square crosssection and co-operates with four corresponding surfaces of a female member through four resilient rollers, the whole being embraced and held together by a tubular casing which may include means for adjustably pre-stressing the rollers. In the arrangement according to Fig. 5, the disposition of the surfaces of the male and female surfaces is such as to permit axial loading of the male member in either direction. In a modification, Fig. 6 (not shown), the surfaces of the members are modified to permit different spring characteristics in each direction of movement. In a further arrangement, Fig. 7 (not shown), in which the male and female members are similar to those of the Fig. 1 arrangement, an intermediate member is interposed between the male and female members resilient rollers being disposed on each side of the intermediate member between it and the male and female members. The arrangement reduces the height of the support for a given load and deflection. |
