Low Shock, Non-Explosive Release Device Using Shape Memory Alloy and Release Method

PURPOSE: Low-impact and non-explosion type release device and method using shape memory alloy are provided to safely release an external structure by splitting a split nut by the upper and lower operations of a bushing and sleeve. CONSTITUTION: A release method for a release device(10) is as follows...

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Bibliographic Details
Main Authors YOO, YOUNG IK, LIM, JAE HYUK, HWANG, DO SOON, KIM, KYOUNG WON, LEE, JUNG JU
Format Patent
LanguageEnglish
Korean
Published 02.02.2012
Subjects
AIRCRAFT
AMMUNITION
AVIATION
BLASTING
COSMONAUTICS
EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
HEATING
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES OR EQUIPMENT THEREFOR
WEAPONS
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Summary:PURPOSE: Low-impact and non-explosion type release device and method using shape memory alloy are provided to safely release an external structure by splitting a split nut by the upper and lower operations of a bushing and sleeve. CONSTITUTION: A release method for a release device(10) is as follows. Current is applied to a shape memory alloy wire. The wire is shrunk by a shape memory action and pushes up a trigger block(700). The trigger block moves to the top and a detent ball(320) moves to the ball groove(720) of the trigger block. The detent ball is released from a ball groove(221) and moves to the ball groove of the trigger block. The movement restriction of sleeve(200) is released and the sleeve pushes up by the elasticity of a compressed spring(410). A roller(310) moves along the outer circumferential surface of a split nut(500).
Bibliography:Application Number: KR20100069444