A foldable expandable umbrella-shaped antenna structure skeleton and unfolding method
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A technology of structural skeleton and umbrella antenna, which is applied in the direction of antenna, antenna parts, antenna support/installation device, etc., can solve the problems of wide applicable frequency band, small aperture size, large aperture size, etc. The effect of small structure size and high reliability
Inactive Publication Date: 2018-07-03
XI AN JIAOTONG UNIV
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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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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] Such as figure 1 and figure 2 As shown, the framework of the foldable and expandable umbrella-shaped antenna structure of the present invention includes a base 1, a primary rod 2, a rotating shaft 8, a secondary rod 3, a torsion spring 4, a retaining member 9, a spring 11, a pull cord 10, and a connecting rod 5. Nut 6, lead screw 7; the base 1 is connected to the bottom ends of multiple radial first-stage rods 2 through the rotating shaft 8, and the rotating shaft 8 is fixed in the circumferential hole of the base 1; the top end of the first-stage rod 2 is connected to the second-stage rod 3 The bottom end is hingedly connected by the torsion spring 4; the clamping part 9-spring 11-drawing rope 10-rotating shaft 8 constitutes a clamping structure, one end of the drawstring 10 is bound to the rotating shaft 8, the other end is...
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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...
Claims
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