A foldable expandable umbrella-shaped antenna structure skeleton and unfolding method

Abstract

A foldable expandable umbrella-shaped antenna structure skeleton and its unfolding method, the structure skeleton consists of a base, a primary rod, a rotating shaft, a secondary rod, a torsion spring, a retaining piece, a spring, a drawstring, a connecting rod, a nut, and a lead screw Composition; the circumference of the base is connected to the bottom end of the first-stage rod through a rotating shaft; the top end of the first-stage rod is connected to the bottom end of the second-stage rod through a torsion spring hinge; the clamping part-spring-drawing rope-rotating shaft constitutes a clamping structure, and the second-stage rod is folded The curved top is clamped in the clamping structure; the lower part of the primary rod is connected with the nut in the circumferential direction through the connecting rod, and the nut is installed on the lead screw to form a lead screw nut structure; the lead screw drives the nut to move upward, and the structural skeleton is retracted; the lead screw drives the nut to Move down, the structural skeleton is opened, the rotating shaft rotates through a certain angle, pull the pull cord to open the clamping structure to release the constraint, and the torsion spring drives the secondary rod to open; in this way, the structural skeleton is unfolded; the umbrella-shaped antenna structural skeleton of the present invention has a small folded size , large size, repeated retractable, light structure, high reliability.

Description

technical field [0001] The invention relates to the technical field of deployable antennas, in particular to a structure framework and a deploying method of a foldable deployable umbrella-shaped antenna. Background technique [0002] The deployable umbrella antenna is a deployable antenna with a relatively simple structure. It is mainly composed of radially folded rigid ribs and reflective surfaces. It is named for its unfolding and folding similar to umbrellas in daily life. This kind of antenna makes the radial rib into a certain shape (such as a parabolic shape), the reflection net is fixed on the front of the radial rib that can rotate around the pivot, and the adjustment net is located on the back of the radial rib. The adjustment of the root cable ensures that the reflective mesh can accurately achieve the desired parabolic shape in the unfolded state. [0003] The umbrella-shaped deployable antenna has the advantages of simple structure and high deployment reliabilit...

AI Technical Summary

Problems solved by technology

However, its shrinkage rate is small, the aperture size is small, and it is only suitable for low frequency bands. It is difficult to meet the technical requirements of modern communication technology for large shrinkage rate, large aperture size, and wide applicable frequency band.

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