Mimosa-pudica-simulated flexible-hinge-connected variable topology folding and extending mechanism

Abstract

A mimosa-pudica-simulated flexible-hinge-connected variable topology folding and extending mechanism comprises flexible hinges and extendable modules, and each flexible hinge is connected with the twocorresponding extendable modules. The extendable modules comprise rotating machine seats, extending arms and four-rod mechanisms. Each of the upper layers and the lower layers of the rotating machineseats corresponds to four pin shaft seats; the extending arms are connected with the pin shaft seats through pin shafts; the two sides of the extending arms are connected with the multiple four-rod mechanisms through pin shafts; the four-rod mechanisms comprise driving rods, driven rods and connecting frame rods; one ends of the driving rods are connected with the extending arms through pin shafts, and the other ends of the driving rods are connected with the driven rods through pin shafts; one ends of the driven rods are connected with the driving rods through pin shafts, and the other endsof the driven rods are connected with the connecting frame rods through pin shafts; and one ends of the connecting frame rods are connected with the driven rods through pin shafts, and the other endsof the connecting frame rods are connected with the extending arms through pin shafts. The mimosa-pudica-simulated flexible-hinge-connected variable topology folding and extending mechanism has the characteristics of being simple in folding process, large in folding ratio, low in mass, simple in structure, high in stability, high in reliability and large in structural strength, and can be appliedto space missions such as earth observation and planetary exploration through space telescopes.

Description

technical field [0001] The invention relates to a folding mechanism, in particular to a variable topology folding mechanism imitating mimosa flexible hinge connection. Background technique [0002] Mimosa is a leguminous perennial herb or subshrub that likes to grow in warm and humid areas. If you touch its leaves lightly with your hands, the leaves will immediately close together. People also call it induction grass. Mimosa cells are supported by the tiny net-like protein "actin". When the closing movement occurs, the phosphoric acid of actin will fall off. Create a closing motion. [0003] In space missions such as space stations, communication micro-platforms, space telescopes, earth observation, and planetary exploration, foldable mechanisms can be seen everywhere. Foldable mechanisms have played an irreplaceable role in aerospace engineering, such as foldable solar cells. board, space station basic skeleton, space manipulator arm, space extension arm and large-apertur...

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Problems solved by technology

[0004] Chinese patent 201210072572.1 discloses a scissors-based quadrilateral unit planar array expandable mechanism. The folding and unfolding process of this patent is complicated. During the unfolding process of the mechanism, interference between the rods is prone to occur, and the predetermined structural form cannot be achieved; Chinese patent 201210310876.7 is published An equilateral triangular planar array expandable mechanism, which can only be folded on a plane, has a small folding ratio; Chinese patent 201210397908.1 discloses a regular tetrahedral symmetrical exp

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