Foldable expandable umbrella antenna structure framework and expansion method

Abstract

The invention relates to a foldable expandable umbrella antenna structure framework and an expansion method. The structure framework comprises a foundation, a first level rod, a rotation shaft, a second level rod, a torsion spring, a clamping member, a spring, a rope, a connection rod, a nut and a screw, wherein the foundation is circumferentially connected with the bottom end of the first level rod through the rotation shaft, the top end of the first level rod is in hinge connection with the bottom end of the second level rod through the torsion spring, the clamping member, the spring, the rope and the rotation shaft form the clamping structure, the second level rod is folded and is bent, the top end is clamped in the clamping structure, the lower portion of the first level rod is circumferentially connected with the nut through the connection rod, the nut is mounted on the screw to form a screw nut structure, the nut is driven by the screw to move upwards, the structure framework is folded; the nut is driven by the screw to move downwards, the structure frame is expanded, the rotation shaft rotates to a certain angle, the rope is pulled to open the clamping structure to release constraint, and the second level rod is driven by the torsion spring to open; the structure framework is expanded. The umbrella antenna structure framework has advantages of small folding dimension, large expansion dimension, repeatable folding and expansion, small and light structure and 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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