The invention belongs to the technical field of aerospace equipment, and particularly relates to a folding and unfolding device. The folding and unfolding device comprises a bottom plate, a top plate and a folding and unfolding mechanism, and the top plate and the bottom plate are arranged in a spaced mode in the first direction; the folding and unfolding mechanism is connected with the bottom plate and the top plate and comprises first memory alloy hinges and a plurality of shear fork pieces, every two adjacent shear fork pieces are connected through at least one first memory alloy hinge, and each first memory alloy hinge has a first state and a second state; the distance between the bottom plate and the top plate when the first memory alloy hinge is in the first state is smaller than the distance between the bottom plate and the top plate when the first memory alloy hinge is in the second state. According to the folding and unfolding device, folding and unfolding power is provided through the first memory alloy hinge, no extra motor is needed for driving, and the overall structure is simple and light; and secondly, the first memory alloy hinge does not generate extra vibration in the folding and unfolding process, so that the stability and the safety of the folding and unfolding device are improved.
本申请属于航天设备技术领域,尤其涉及折展装置。本申请公开折展装置,包括底板、顶板和折展机构,顶板与底板在第一方向上间隔设置;折展机构连接底板与顶板,折展机构包括第一记忆合金铰链和多个剪叉件,相邻的两个剪叉件通过至少一个第一记忆合金铰链连接,第一记忆合金铰链具有第一状态和第二状态,第一记忆合金铰链处于第一状态时底板与顶板之间的间距小于第一记忆合金铰链处于第二状态时底板与顶板之间的间距。本申请的折展装置通过第一记忆合金铰链提供折展动力,无需额外的电机进行驱动,使得整体结构简单且轻便;其次,第一记忆合金铰链在折展的过程中不会产生额外振动,进而提高折展装置的稳定性和安全性。
Folding and unfolding device
折展装置
2023-08-08
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
European Patent Office | 2024
|European Patent Office | 2023
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