Memory alloy locking and releasing mechanism

Abstract

The invention discloses a memory alloy locking and releasing mechanism. According to the memory alloy locking and releasing mechanism, a locking seat, a separation spring, a memory alloy unlocking device, a pressing cone, a separation pad, a locking arm, a separation cap, a locking rod, an anti-falling cap and an anti-falling spring are matched, so that the purpose that the unlocking release impact force is small, repeated locking and unlocking release can be achieved, after unlocking, the locking arm has the freedom degrees in the normal direction and the tangential direction of the pressingface at the locking position at the same time, and redundant objects such as smoke do not exist in the unlocking process is achieved, and the defect of a traditional initiating explosive device driveunlocking device is overcome.

Description

technical field [0001] The invention relates to a mechanism driven by a memory alloy, belonging to the technical field of locking and releasing. Background technique [0002] Locking and releasing are usually the fixing and releasing operations for a mechanism with at least one degree of freedom of movement. The purpose of locking is to restrain and fix the moving parts of the locked mechanism and avoid collision or the locked mechanism under external excitation. resonance occurs. The purpose of releasing is to release the movable parts of the locked mechanism, so that the locked mechanism can obtain the original number of degrees of freedom before being locked. [0003] In recent years, the common locking and releasing devices at home and abroad all use pyrotechnic locking and releasing devices. The degree of freedom, the release principle is to use the impact force generated by the instantaneous deflagration of the fuel inside the pyrotechnic device to cut off the compre...

AI Technical Summary

Problems solved by technology

[0005] First, at the moment of unlocking the lock and release device of pyrotechnics, the impact force generated by deflagration reaches a hundred times the acceleration of gravity, and there is a defect that the unlocking impact is large

[0006] Second, each set of pyrotechnic locking and releasing devices can only realize the deflagration release function once. When there are multiple release requirements, it is necessary to constantly replace new pyrotechnic locking and releasing devices, and the cost of use is relatively high.

[0007] Third, after the pyrotechnic product is locked and the release device is unlocked and released, the locked mechanism mostly does not have the freedom to move along the tangential direction parallel to the pressing surface at the locking position, so that the locked mechanism can move in the locked position limited range

[0008] Fourth, due to factors such as processing errors, installation errors, and material batch differences of different batches of pyrotechnics locking and releasing devices with one-time detonation and release functions, there are deficiencies such as poor consistency in locking or releasing states

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