EXPANDING STRUCTURE

Japanese Patent JP3891639

B2

PROBLEM TO BE SOLVED: To provide a structure which is simple, is light, has low manufacturing cost, has high rigidity, and has high reliability, by engaging a connecting member with a longitudinal member, and by forming the engaging part corresponding to rotating trajectory of the longitudinal member in relation to a transverse member during expansion and/or shrinkage.
SOLUTION: A connecting member 11 is mounted at the top of the triangle of a transverse member 4 combined in the equilateral triangle shape. The connecting member 11 is equipped with a cylindrical body 15 made of resin material and a triangular transverse member attaching part 16, and the end part of the transverse member 4 is attached to the transverse member attaching part 16. An engaging part which engages with a longitudinal member 2 is formed in the body 15. The engaging part consists of a pair of sectorial cavities 17. The cavities 17 have a shape corresponding to rotating trajectory of the entire outer peripheral surface of the longitudinal member 2, when the longitudinal member 2 rotates around the center of the body 15 from a expansion condition A to a shrinkage condition B. The cavities 17 are opened in the angle range of 90° in the outer peripheral surface of the body 15, and the longitudinal member 2 is inserted into the cavities 17.

JPH0772459	[Title of the Invention] Method for manufacturing a tubular structure
WO/1997/036068	ELONGATE STRUCTURAL MEMBER

Kakuman Okazaki
Atsushi Kurihara

JP15525097A

March 14, 2007

June 12, 1997

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Japan Airplane Co., Ltd.

F16S3/00; B64G1/22; (IPC1-7): F16S3/00; B64G1/22

JP61010298U
JP61124567U
JP56160490A

Takehiko Suzue
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura

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