Foldable and unfoldable structure based on rectangular six-fold paper folding unit

Abstract

The invention discloses a foldable and unfoldable structure based on a rectangular six-fold paper folding unit. The folding unit of the paper folding structure comprises six boundary points, an internal foldable and unfoldable point, six boundaries and six folds; the four boundary points are respectively positioned at four corners of a rectangular frame, and the other two boundary points are respectively positioned in two parallel sides of a rectangle; the six boundary points and the internal point are connected to form six creases, the four creases are mountain creases, and the two creases are valley creases. According to the invention, the advantages of large folding and unfolding ratio, graceful configuration and capability of realizing negative Poisson's ratio of a traditional Waterbomb folding paper are reserved. However, the axial symmetry of a traditional Waterbomb paper folding basic unit is reduced, so that the basic unit only needs to meet the rotational symmetry, and the complete rectangular six-fold paper folding structure can be formed by expanding the basic unit in parallel in the horizontal direction and expanding the basic unit in a staggered mode in the vertical direction. The constraint of the traditional Waterbomb folding paper is broken through, and the positive effect on increasing the shape diversity of the paper folding structure and promoting the application of the paper folding structure in engineering is achieved.

Description

technical field [0001] The invention is a foldable structure unit applied to solar foldable battery panel design, building structure design and modern space structure design, in particular to a foldable structure based on a rectangular six-fold origami unit. Background technique [0002] In recent years, due to the unique properties of origami structures, they have been widely used in aerospace, robotics, metamaterials, biomedical engineering, building construction and other fields. As a new type of spatial structure, the deployable structure has the characteristics of mechanical movement, which can cater to the environment and effectively change the geometric configuration of the structure. [0003] The basic unit of the traditional Waterbomb origami is an axisymmetric rectangle. The basic unit consists of six boundary points, an internal folding point, and six creases intersect at the internal folding point. The Waterbomb origami pattern can be regarded as the basic unit ...

AI Technical Summary

Problems solved by technology

As a traditional Waterbomb origami, it has many advantages, but because its origami unit must be axisymmetric, the internal foldable point must be in the center of the unit, which limits the shape of the origami unit and the fully folded structure; the current rectangular six-fold origami The small number of structural patterns is not conducive to the promotion of origami structures; in addition, the creases of the folding units of some origami patterns are not regular, which is not convenient for modular production, and its use in engineering is also greatly restricted

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