Planar complex structural space and large stroke type lamina emergent torsional joint

Abstract

The invention discloses a planar complex structural space and large stroke type lamina emergent torsional joint. The planar complex structural space and large stroke type lamina emergent torsional joint comprises a rectangular plane unit for realizing out-of-plane twisting function, and a fork-shaped plane unit for realizing in-plane rotating function, wherein the fork-shaped plane unit is of a fork-shaped structure which is formed by intersecting two flexible straight-beam thin sheets, and the fork-shaped structure is provided with an included angle; and the rectangular plane unit and the fork-shaped plane unit are connected in an outer linking manner or an embedding manner. The planer complex structural space and large stroke type lamina emergent torsional joint overcomes problems of anexisting planar structural lamina emergent torsional joint, such as that the existing planar structural lamina emergent torsional joint is equivalent to a single-degree-of-freedom large stroke low movement pair, an LEMs (Lamina Emergent Mechanisms) are equivalent to a multi-degree-of-freedom lamina emergent torsional joint, and the overall stroke is small

Description

technical field [0001] The invention relates to the technical field of compliant mechanisms, in particular to a compliant hinge with a planar composite structure and a large space stroke. Background technique [0002] Compliant mechanism refers to a type of mechanism that uses its own elastic deformation to transmit input force or displacement. The advantages of compliant mechanisms, such as no gap, no lubrication, no assembly, high precision, and high stiffness, have long been discovered by scholars and are widely used in aerospace, mechanical engineering, robotics, medical equipment, and other fields. One of the mainstream design methods of compliant mechanisms is the rigid body substitution method. Its basic idea is to replace the rigid hinges of traditional rigid mechanisms with corresponding compliant hinges, and then form the corresponding compliant mechanisms. Therefore, the design of compliant hinges and the design of new space compliant mechanisms have always been ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems that the existing planar structure compliant hinge can only be equivalent to a single-degree-of-freedom large-stroke low-kinematic pair and the existing LEMs compliant mechanism is equivalent to a multi-degree-of-freedom compliant hinge with a relatively small overall stroke. A compliant hinge with a planar composite structure and a large stroke in space, which has the advantages of simple structure, easy processing, easy analysis and calculation, and multi-degree-of-freedom flexibility in equivalent large stroke space.

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