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Foldable tubular element with one rigid degree of freedom

a tubular element and rigid degree technology, applied in the field of folding tubular elements, can solve the problems of imposing limitations on the application of the element, the difficulty in accurately controlling etc., and achieve the effects of reducing the complexity of the folding and expanding process, facilitating storage and transportation, and convenient assembly

Active Publication Date: 2017-08-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design enables accurate and reliable folding and expanding processes, reducing complexity and facilitating repeated use, while allowing for compact storage and versatile applications.

Problems solved by technology

It is hard to accurately control the process of folding and expanding and this imposes limitation on their application.

Method used

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  • Foldable tubular element with one rigid degree of freedom
  • Foldable tubular element with one rigid degree of freedom
  • Foldable tubular element with one rigid degree of freedom

Examples

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Embodiment Construction

[0093]The present invention will be described below in conjunction with drawings and embodiments.

[0094]A foldable tubular element with one rigid degree of freedom according to the invention is of a tubular construction formed by a number of single layered annular units which are connected in sequence. Each single layered annular unit is of a prism having N sides. Two adjacent prisms each having N sides are connected to each other by sharing a polygon with N sides formed on an intersection plane defined by connection of a first and a final ridge lines. Each prism with N sides is composed of N rigid planar quadrilateral facets. Two adjacent single layered annular units comprise N spherical mechanisms formed by intersection of only four planar quadrilateral facets around an apex. The polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a planar polygon with arbitrary sides in addition to triangle. When N is an even number, and the ...

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Abstract

A foldable tubular construct / element with one rigid degree of freedom is of a tubular construction formed by a number of single layered annular units which are connected in sequence; each single layered annular unit is of a prism having N ridge lines; two adjacent prisms each having N sides are connected to each other by sharing a polygon with N sides formed on an intersection plane; each prism with N ridge lines is composed of N rigid planar quadrilateral facets; two adjacent single layered annular units comprise N spherical mechanisms formed by the intersections of only four planar quadrilateral facets at each apex; the polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a planar polygon with an arbitrary number of sides greater than for a triangle; the ridge lines of each prism having N ridge lines are parallel to each other; the connecting ridge lines of the tubular element are coplanar; when the polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a line-symmetric polygon of even number of sides with at least one diagonal symmetric axis, the plane in which connecting ridge lines of the tubular element are located is perpendicular to one diagonally symmetric axis.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This is a CIP application based on PCT Application No. PCT / CN2013 / 075521, filed May 11, 2013, which claims priority from CN Application No. 201210528507.5, filed Dec. 5, 2012. The contents of the prior applications are incorporated herein in the entirety by reference.FIELD OF THE INVENTION[0002]The present invention relates to a foldable construction and more particularly, relates to a foldable tubular element with one rigid degree of freedom.BACKGROUND OF THE INVENTION[0003]An expandable and foldable tubular element composed of a number of planar units has various uses. For example, it may be used as a huge construction of space station, construction of moon base, used as support for human body blood vessel or digestive tract, or used as large or intermediate temporary residences after occurrence of serious natural disaster. When expanded, this kind of tubular element will define a space with certain volume. Also, it can be reduced to it...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E04B1/343A61F2/844E04H15/32E04C2/40E04C2/42
CPCE04B1/34357E04C2/40A61F2/844E04H15/32E04C2/427Y10T428/24686Y10S52/10B64G99/00E04B1/3449A01G9/00A63H33/16E04B1/32E04B1/343E04B7/10E04B7/107E04B2001/3247E04B2001/327E04B2001/3294E04C2/30E04C2/42E04H15/52
Inventor CHEN, YANLIU, SICONGLI, JIANMINWANG, KUNFENGLV, WEILINSHIGETOMI, KAORI
Owner TIANJIN UNIV
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