| 摘要 |
<p>The invention relates to elastic sealing bellows for a ball joint, preferably for chassis suspensions or steering systems of motor vehicles. According to the invention, the ball joint has a joint housing with a joint bolt, which is mounted therein in a manner that enables it to rotate and pivot and which is fixed to an associated bolt part on a chassis-side mount. The inventive sealing bellows (1) are statically fixed to the joint housing and fixed to the bolt part (4) of the joint bolt (3) via a sealing seat (8) consisting of at least one sealing lip (7), which encircles the bolt part (4), is situated on a sealing bellows flange (5), and which bulges outward in a bead-like manner toward the bolt part (4). The inside diameter (d) encircling the bolt part (4) has a smaller dimension than the outside diameter (D) of the corresponding bolt part area. This inventive design is characterized in that the sealing bellows flange (5), which is directly adjoined to the sealing lip (7) in the axial longitudinal direction of the joint bolt axis (10), comprises a reinforcement ring (11), which is made of an inelastic material and which, when the ball joint is assembled, is situated at a short free distance (9) from the bolt part (4) while encircling the same. This design creates, in the area the sealing bellows flange (5), a shear spring system whose shear force produced by the deformation of the sealing lip (7) provides a sufficient contact force for obtaining a lasting sealing action of the sealing seat (8). This shear spring system is, in contrast to prior art solutions, easy to calculate while using few parameters and easy to manufacture whereby making it possible to economically produce a lasting seal for a ball joint.</p> |
