Weightless unlocking mechanism

Abstract

The invention relates to the field of mechanical structures, in particular to a weightlessness unlocking mechanism which comprises a first lock ring, a second lock ring and a lock pin provided with aclamping groove, and the inner side walls of the first lock ring and the second lock ring are provided with limiting parts used for being connected with the clamping groove in a clamped mode and elastic pieces used for pushing the limiting parts to be separated from the clamping groove. The first locking ring and the second locking ring are prevented from sliding through an anti-sliding face connected between the first locking ring and the second locking ring, a first magnetic pole and a second magnetic pole are formed on the opposite sides of the first locking ring and the second locking ringrespectively, and homopoles of the first magnetic pole and the second magnetic pole are opposite. When the mechanism is in a weightlessness state, the first locking ring and the second locking ring are separated under the homopolar effect of the magnetic poles, and the limiting part is separated from the first clamping groove and the second clamping groove under the effect of the elastic pieces,so that a locking pin is separated from the position between the first locking ring and the second locking ring, weightlessness unlocking is achieved on a mechanical mechanism, and the dependence degree of weightlessness unlocking on the electronic equipment is reduced.

Description

technical field [0001] The invention relates to the field of mechanical structures, in particular to a weightless unlocking mechanism. Background technique [0002] The parachute used by the airdrop device needs to be automatically unlocked and activated when the airdrop is weightless, and it needs to be locked when it is not weightless. [0003] The existing mainstream solution is to manually open or activate the parachute, or to control it through electronic equipment, sensors and program logic. For example, the state of weightlessness is sensed by the accelerometer, the trigger conditions such as the weightlessness threshold and the duration of weightlessness are calculated and evaluated by the microcontroller, and the control is controlled by the program logic. The unlocking switch is triggered by the electromechanical device. [0004] However, electronic devices are powered by batteries, and cannot work after the batteries are exhausted, and need to be replaced or rec...

AI Technical Summary

Problems solved by technology

[0004] However, electronic devices are powered by batteries. After the batteries are exhausted, they cannot work and need to be replaced or recharged, which increases the complexity of maintenance and the possibility of human error.

In addition, there is a risk of electromagnetic interference in electronic equipment, and there may be reliability problems in a strong electromagnetic interference environment

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