Rigidity-improved spherical hinge and method for improving rigidity of spherical hinge

Abstract

A rigidity-improved spherical hinge comprises a rubber layer, a mandrel and an outer cover. Outward-protruding circular-arc sections protruding towards the outer side are arranged on the two sides of a main circular-arc section of the periphery of the mandrel, the circular-arc radius of the outward-protruding circular-arc sections is smaller than that of the main circular-arc section, and inward-concave circular-arc sections concaved towards the inner side are arranged on the outer sides of the outward-protruding circular-arc sections. The outward-protruding circular-arc sections protruding towards the outer side are cut on the two sides of the main circular-arc section of the mandrel, the inward-concave circular-arc sections concaved towards the inner side are cut on the outer sides of the outward-protruding circular-arc sections, and thus the structure of the rubber layer vulcanized on the mandrel is changed accordingly. The rigidity of the spherical hinge is improved by changing the structures of the mandrel and the rubber layer in the spherical hinge. The dimension of an opening of the spherical hinge is increased due to the outward-protruding circular-arc sections and the inward-concave circular-arc sections; besides, the main circular-arc section, the outward-protruding circular-arc sections and the inward-concave circular-arc sections are in smooth transition so that the strain of the rubber layer can be effectively reduced, and thus the anti-fatigue performance and the stability of the product can be improved.

Description

technical field [0001] The invention relates to a method and a product for improving the rigidity of a ball joint, in particular to a method and a product for improving the rigidity of a ball joint by improving the structures on both sides of the mandrel and the rubber layer in the ball joint. Background technique [0002] The ball joint is a commonly used rubber-metal composite vibration damping and connecting element. Its main function is to connect the car body and the frame, which can transmit force and provide multi-directional cushioning elements. The metal parts and rubber are vulcanized into a whole under certain temperature and pressure through the adhesive. [0003] In the existing spherical hinge products, generally single arc design is adopted. With the advancement of science and technology, the radial stiffness of the spherical hinge is required to be larger and larger, while the torsional stiffness of the product remains unchanged. This design at this stage ha...

AI Technical Summary

Problems solved by technology

[0005] 1. Increase the rigidity by increasing the volume of the product. This method takes up a lot of space, the product is too heavy, and the installation is troublesome. It may also cause the position and size of the associated components to be modified;

[0006] 2. The rubber layer is made of a rubber material with high hardness. This method will cause a large strain of the product and the fatigue resistance of the product is not ideal

And the application number is CN201010129020.0 the outer surface of the mandrel in the invention patent except the main arc section is also provided with the concave arc section connected with the main arc section, but the main arc section and the concave arc section of this patent There is no convex arc segment between the arc segments, and its stiffness characteristics are different from those of the present invention

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