Patent ID: 8776451
Filing Date: 2014-07-15
Classification: B64G,E04H,H01Q

Abstract:
1. An extendible structure which includes an elongated extendible member having elasticity, and a storage part that serves to store the extendible member by winding it up, wherein a tip end of the extendible member can be extended from the storage part in a one-dimensional manner, so that an extendible part thus extended becomes a hollow tubular structure, wherein said extendible member is composed of three divided extendible members with arc-shaped elongated bodies so that the extendible part of the hollow tubular structure has a circular tubular shape and is divided into three parts in a circular cross section, and the individual divided extendible members are constructed such that their tip end portions are joined with one another, and at the same time, their base end portions are wound around divided storage parts independently from each other; and wherein surface fasteners are provided on ear parts, with the car parts being formed on opposite sides of each of the divided extendible members over the entire length of the divided extendible members in a longitudinal direction, said surface fasteners being combined with one another to make the extendible part into a hollow structure of a closed cross section at the time of extension, wherein the divided storage parts are arranged radially in three directions around a central inner guide in such a manner that the divided extendible members can be pulled out toward the outlet sides of the divided storage parts along the inner guide, with each divided storage part provided with an extension guide arranged at the outlet side of the divided storage part in such a manner so as to extend in an extension direction, and wherein a resilient presser member is attached to the extension guide so as to press said surface fasteners.