A memory alloy spring pin

Abstract

The invention provides a memory alloy spring pin, which includes a mounting seat, a side cover, a bottom cover, a pin post, a retaining ring, a pin spring, a pin hole seat, a locking plate, a locking spring, a pressing plate, an insulating heat insulation pad, a heating plate, The memory alloy sheet, flat pad and electrical connector, the fastening screw is located inside the side cover, passing through the flat pad, insulating heat insulating pad, memory alloy sheet, heating sheet, insulating heat insulating pad, pressure plate from top to bottom, and finally screw into the screw holes on the mounting base; the mounting base contains two cavities, one cavity is used to install the spring pin assembly, and the other cavity is used to install the electrical connector; the side cover is installed on the side of the mounting base, and the bottom cover is installed on the bottom. The present invention integrates the memory alloy spring pin structure and the electric connector, and has a compact structure, and the memory alloy spring pin itself is very convenient to install and insert and pull out the electric connector.

Description

technical field [0001] The invention relates to a memory alloy spring pin, which is especially suitable for the unlocking of micro-nano-satellite star-rocket separation mechanism, solar wing deployment unlocking, or satellite-borne antenna deployment and unlocking for which the separation impact requirement is less than 100g. It can also be used for other low-impact unlocking requirements. Detach the unlocking mechanism. Background technique [0002] After the micro-nano satellite enters the orbit, it is necessary to release the locking of the satellite-rocket separation mechanism to the micro-nano satellite or antenna through the pin puller. After the spaceborne antenna enters the orbit with the satellite, it is necessary to release the locking of the antenna deployment mechanism to the antenna through the pin puller. Traditional pin pullers generally use pyrotechnic pin pullers, which have the problem of excessive unlocking impact, and can only be used once, and have gradu...

AI Technical Summary

Problems solved by technology

Traditional pin pullers generally use pyrotechnic pin pullers, which have the problem of excessive unlocking impact, and can only be used once, and have gradually been replaced by non-pyrotechnic pin pullers with less impact (such as memory alloy pin pullers, etc.)

However, most of the existing memory alloy pin pullers directly provide the pin pulling force through the memory alloy. Due to the limitation of power consumption and material performance, the locking force that the memory alloy can provide is generally small, and the bearing capacity of the pin puller is also low. therefore restricted

In addition, after the memory alloy is heated by electricity, it can only be reset after cooling down for the next test. Although it can be used repeatedly, it is not convenient for actual use, especially for ground tests.

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