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A memory alloy spring pin
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A memory alloy spring, memory alloy technology, applied in the direction of bolts, etc., can solve the problems of limited bearing capacity, inconvenience and small locking force of the pin puller, saving time, convenient installation and plugging of electrical connectors, structural compact effect
Active Publication Date: 2022-03-04
AEROSPACE DONGFANGHONG SATELLITE
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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pin pullers, which have the problem of excessive unlocking impact, and can only be used once, and have gradually been replaced by non-pyrotechnic pin pullers with less impact (such as memory alloy pin pullers, etc.)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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[0031] The present invention will be further described below in conjunction with accompanying drawing.
[0032] like figure 1 , 2 As shown, a memory alloy spring pin includes a mounting base 1, a side cover 2, a bottom cover 3, a pin 4, a retaining ring 5, a pin spring 6, a pin hole seat 7, a locking plate 8, a locking spring 9, and a pressure plate 10. Insulation and heat insulation pad 11, heating sheet 12, memory alloy sheet 13, flat pad 14 and electrical connector 16, the overall shape is as follows Figure 4 shown.
[0033] The fastening screw 15 is located inside the side cover 2, passing through the flat pad 14, the insulating heat insulating pad 11, the memory alloy sheet 13, the heating sheet 12, the insulating heat insulating pad 11, and the pressure plate 10 from top to bottom, and finally screwed into the mounting seat 1 screw hole;
[0034] The mounting seat 1 includes two cavities, one cavity is used for installing the spring pin assembly, and the other cavit...
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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...
Claims
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Application Information
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