A pyrotechnic driven piston micro-actuator

A piston-type, micro-action technology, applied in weapon accessories, fuzes, offensive equipment, etc., can solve the problem of less actuating devices, achieve small structure size, high thrust and thrust, and good anti-static and anti-radio frequency capabilities. Effect

Inactive Publication Date: 2015-07-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still relatively few actuating devices that match MEMS, and there are few actuating devices that can meet the requirements of MEMS in terms of size, structure and function.

Method used

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  • A pyrotechnic driven piston micro-actuator
  • A pyrotechnic driven piston micro-actuator
  • A pyrotechnic driven piston micro-actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] combine Figure 3-4, a piston-type micro-actuator driven by pyrotechnics mainly includes: a semiconductor bridge ignition component (as an ignition electrothermal sensitive propellant), an electrothermal sensitive work agent (providing power energy), a stepped piston (power actuator), a tube shell etc. The semiconductor bridge ignition component consists of a semiconductor bridge transducer, an asymmetric ceramic electrode plug and a small amount of electrothermal sensitive propellant. The semiconductor bridge transducer is fixed in the trapezoidal recess of the asymmetric ceramic electrode plug, and a small amount of it is filled after bonding the wire. The electrothermal sensitive propellant is made into the pyrotechnic assembly, and the cylindrical charging chamber is filled with a certain amount of electrothermal sensitive work agent, and then the small diameter part of the piston is inserted into the through hole at the bottom of the tube shell, and finally the semi...

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PUM

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Abstract

The invention relates to an explosive driven piston type micro actuator which comprises a semiconductor bridge ignition component, electrothermal sensitive ignition gunpowder, a step-like piston and a tube shell. The piston micro actuator is an explosive actuation device and is also an acting initiator; the ignition component is assembled at one end of the tube shell and is connected with the tube shell in a sealed manner; the electrothermal sensitive ignition gunpowder fills in a piston cylindrical gunpowder chamber; the piston is arranged in the tube shell in an interference fit manner. During working, the ignition component ignites the electrothermal sensitive ignition gunpowder to produce a large amount of gas which pushes the piston to generate reliable thrust within short time. The piston type micro actuator can be used as a micro electro mechanical system arming device, has the characteristics of small size, low ignition energy, electromagnetic environment resistance and the like and has a good application prospect.

Description

Technical field [0001] The invention relates to a piston-type micro-actuator driven by pyrotechnics, which is a pyrotechnic actuating device and also a working pyrotechnic product. The invention can be used as a micro-electromechanical system release safety device. Background technique [0002] The fuze safety system is defined in GJB373A-97 "Fuze Safety Design Guidelines" as: "The various devices used to prevent the fuze from disarming (starting) and functioning before sensing the predetermined launch environment and completing the delayed disarming (such as Combination of environment-sensitive devices, launch action-sensitive devices, command action devices, movable key parts or logic networks, and flame-proof parts for fire-transfer sequences or flame-proof parts for explosion-transfer sequences). The command action device in this definition refers to the actuator; correspondingly, the overall structural size of the actuator used in the MEMS is very small, which can be ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42C15/184
Inventor 严楠王刚程俊耿万钧吕智星李朝振娄文忠穆慧娜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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