Elastic joints having a torsion stop and use of such joints in vibration absorbers

An elastic torsion joint of a pendulum vibration absorber, which is capable of providing multi-stage deflection angles of at least 50° deflection, the elastic torsion joint comprising:

• (i) an inner fixed joint ball,
• (ii) an elastic layer element which can move around the inner fixed joint ball and which is composed of a plurality of concentric annular elastic layers that are separated from one another by intermediate concentric annular metal sheets, and
• (iii) a torsion stop,
• wherein
• (iv) the elastic layer element (2) substantially has a shape of a spherical half-shell, to the center of the flat side of which said inner fixed joint ball (2.7) is attached together with the torsion stop (2.4), which is a stop ring,
• (v) the inner fixed joint ball (2.7) is rigidly connected to the innermost elastic layer of the layer element such that, when the layer element moves relative to the inner fixed joint ball, said innermost elastic layer is deformed the most of all the layers, and the joint ball is functionally operatively connected to the torsion stop ring,
• (vi) the torsion stop ring (2.4) and the layer element are designed such that, the torsion stop ring strikes by pressing against the innermost intermediate metal sheet of the layer element (2) closest to the joint ball during a cardanic movement of the layer element (2) and the inner fixed joint ball (2.7) relative to one another by at least a first defined deflection angle (2.20), thus the adjacent outward-positioned concentric annular elastic layer of the elastic layer element (2) being unable to undergo any further deformation,
• (vii) the torsion stop ring (2.4) has a profile structure that corresponds to the at least first defined deflection angle on the side facing the annular intermediate metal sheets, and strikes against the annular long edge, facing the torsion stop, of the relevant annular intermediate metal sheet that protrudes from the spherical half-shell,
• (viii) the concentric annular metal sheets are provided with circumferential stop elements (2.22) at each of the points against which the torsion stop ring (2.4) presses during deflection, and
• (ix) the elastic layer element (2) comprises at least three elastic layers, wherein the inner concentric annular elastic layers of the elastic layer element (2) are thinner than the outer layers provided that stiffness of the elastomer material in the elastic layers is the same or similar.