Multi-stable-state smooth folding mechanism

Abstract

The invention discloses a multi-stable-state smooth folding mechanism which comprises a wavy-type smooth section. The wavy-type smooth section is formed by connecting a plurality of identical periodic wavy smooth pieces in sequence; one half period of the waveform curve of each periodic wavy smooth piece is formed by connecting two identical vertical lines through a semicircle, an installation hole is reserved in each periodic wavy smooth piece for connecting other components needing to be folded, each installation hole is formed in one peak of the corresponding periodic wavy smooth piece, the installation holes of all the periodic wavy smooth pieces are formed in the same side, the head and tail of the wavy-type smooth section are connected, an annular closed structure can be formed, initial strain energy stored by bending deformation is maintained, and then the needed multi-stable-state smooth folding mechanism is formed. The multi-stable-state smooth folding mechanism is simple in structure, machining is convenient, the multi-stable-state smooth folding mechanism is particularly applicable to the complex space, no obvious strain concentration exists in the folding process, fatigue is not likely to be caused, and the multi-stable-state smooth folding mechanism can be continuously turned over.

Description

technical field [0001] The invention relates to the technical field of folding mechanisms, in particular to a multi-stable flexible folding mechanism. Background technique [0002] The folding mechanism is a mechanism that can achieve obvious structural changes by changing its own mechanism topology. Folding mechanisms can be seen everywhere in life, such as umbrellas, some tension mechanisms, bistable mechanisms, and shear hinge mechanisms. Wait. The folding mechanism is also widely used in aerospace, such as the deployment of solar panels and solar sails, as well as vascular stents in biomedicine, human interventional robots, and many other applications. [0003] Existing folding mechanisms are mainly divided into rigid folding mechanisms and flexible folding mechanisms: [0004] 1. In order to realize the rigid folding function, the rigid folding mechanism mainly replaces the crease with the movement of the rigid rotating hinge constraining parts to realize the folding ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the existing rigid Bricard unfolding mechanism and the Bricard pliable unfolding mechanism designed by the traditional rigid body substitution method, aiming at the complex structure, difficult control, machining error and assembly error of the rigid unfolding mechanism and their The shortcomings of the rigid folding mechanism such as unstable movement and the need for attitude maintaining devices, and the Bricard flexible folding mechanism designed by the traditional rigid body substitution method have the disadvantages of complex structure, limited range of motion, prone to stress concentration, and easy fatigue. Provides a multi-stable and flexible folding mechanism with compact structure, simple and reliable, convenient processing, no obvious stress concentration, not easy to fatigue, and multi-stable characteristics

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