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Document Type and Number:
Japanese Patent JP2019151136
Kind Code:
To provide an expansion structure capable of extending or contracting in the unidimensional direction without adding force from an external part.SOLUTION: In an expansion structure having a cylindrical member of a closed cross-sectional structure, and the cylindrical member has a fold part f for folding up in the center axial direction, and is divided into a plurality of patterns by the fold part, and can take a contraction form of folding up in the parallel direction to the center axis and an extension form of extending in a cylindrical shape by opening the fold part, the plurality of patterns are constituted of a hard part having rigidity for holding a shape and having elasticity elastically deformable to a plane form and a curved form of constituting a part of a cylindrical form of the cylindrical member, and the fold part is constituted of a freely deformable soft part.SELECTED DRAWING: Figure 1

渡邊 秋人
Application Number:
Publication Date:
September 12, 2019
Filing Date:
February 28, 2018
Export Citation:
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International Classes:
B64G1/44; B64G1/66; F16S1/06
Attorney, Agent or Firm:
世良 和信
金井 廣泰
坂井 浩一郎
森廣 亮太

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