High-rigidity self-expanding light shield

A self-expanding, light-shielding technology, applied in the aerospace field, can solve the problems of low rigidity, low positioning accuracy, complex structure and system of the expandable light-shielding cover, etc. Effect
CN110763262AActive Publication Date: 2020-02-07CHANGGUANG SATELLITE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGGUANG SATELLITE TECH CO LTD
Publication Date
2020-02-07

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Abstract

The invention discloses a high-rigidity self-unfolding light shield, and belongs to the technical field of spaceflight. The light shield aims to solve the technical problems that a structural system is complex, positioning precision is not high, and rigidity is not high. Both an upper mounting seat and a lower mounting seat of the light shield are provided with light through holes; a plurality ofspring withdrawing grooves are respectively and uniformly formed in the circumferential direction; connecting block mounting holes are formed in the spring withdrawing grooves; a baffle ring is arranged between the spring withdrawing grooves and the light through holes; the upper mounting seat is connected with the lower mounting seat through a strip-shaped spring group; a driving spring and shading cloth are arranged between the upper mounting seat and the lower mounting seat; an unlocking device is fixedly installed on the side wall of the lower mounting seat through screws, the unlocking device breaks a locking rope, the driving spring drives the upper mounting seat and the lower mounting seat to be separated, the shading cloth is driven to be unfolded, and a strip-shaped spring is automatically unfolded from the folded bent state to the stretched state, thereby achieving the high-rigidity automatic unfolding of the light shield. The light shield has the advantages of high reliability, self-unfolding, self-locking, simple structure, light weight, high rigidity, high unfolding precision and large compression ratio.
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Description

technical field

[0001] The invention belongs to the field of aerospace technology, and in particular relates to a high-rigidity self-expanding sunshield. Background technique

[0002] The hood is an important part of the satellite optical remote sensing system, which is mainly used to block the external stray light from entering the optical system to improve the imaging quality or detection performance. Conventional hoods are usually designed with a fixed size and made of metal or composite materials. In order to meet the requirements of the optical system, the hood is often large in size, resulting in wasted space and increased launch costs. For large-diameter hoods, the size is also Will be limited by the rocket fairing. The deployable hood that is folded during launch and unfolded after entering orbit is a key technology and an effective means to solve the space requirement of the hood.

[0003] Existing expandable shades mainly include mechanism-expandable, inflatable-...

Claims

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