ES243634U - An elastic articulation for the transmission of force, in particular for levers of change of automobile vehicles. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Elastic articulation for the transmission of force, in particular for levers of change of motor vehicles, constituted by an input force transmission element, an output force transmission element and an intermediate damping and joining member enclosing a body of elastic material, such as rubber, for the damping of vibrations, said intermediate damping member being constituted by: a piece of sheet metal bent in a u-shape, with central parts of the wings arched in a convex outward direction and ending in paths tabs directed outwardly, the web portion of said piece being firmly joined, for example by welding points, to one of the force transmission elements; a second u-piece or closure piece, analogous to the previous one, but with the lateral parts corresponding to the central area of the wings extended outwards in the plane of the core in such a way that their opposite edges are coupled and fixed, for example by welding, to the flanges of said first U-shaped part and in an inverted position and with their to within those of the latter, said closing part further having a central drawing in the area of the soul, which forms a projection directed inwards of depth greater than half the height of the coupled parts, and an elastic mass, for example of rubber, firmly fixed on the core of the first u-piece and the part of the force transmission element attached thereto and leaving laterally respective separation grooves with respect to the sides or wings of said u-piece, but extending from said core by the wings thereof in a thin sheet forming said wings internally, said mass elastic a height such that there is a narrow space of separation between it and the inner face of the core of the closure piece and presenting a large cylindrical central recess into which the embossed projection of said closure piece is concentrically inserted, so that it remains an annular space between both, since the outer diameter of said projection is substantially smaller than that of said recess, characterized in that the input element is constituted by an elongated metal sheet having an extreme widening provided with a central circular hole of greater diameter that the outer diameter of said projection, which is intended to be introduced into said hole concentrically and in such a way that the input and output elements are parallel and directed in opposite directions, said widening being completely embedded in the rubber mass, and because the element of exit, also constituted by a metal sheet, is firmly attached to the for example by means of welding points, to the core of the first u-piece, the arrangement being such that the force applied to the input element is transmitted to the output element so that, in order to dampen the possible sudden impulses of said force, has the possibility of making a small relative longitudinal displacement when yielding the elastic mass until the wall of its central recess makes soft contact with the wall of the projection, a small relative rotation around the axis of the central protrusion allowed by the lateral grooves and limited by the contact of the side walls of said rubber mass with the wings of the second u-piece and, finally, a relative rotation in the longitudinal plane passing said axis, allowed by the small separation existing between the upper part of the rubber mass and the lower face of the core of the second piece in u until both are brought into contact by their front parts or back (Machine-translation by Google Translate, not legally binding)