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Micro electro mechanical system fuse security device

A micro-electromechanical and fuze technology, applied in fuzes, weapon accessories, offensive equipment, etc., can solve the problems of difficult to control the cooling process, limited use range, high size requirements, etc., achieve small structure size, meet space and time requirements, and respond block effect

Active Publication Date: 2015-12-16
湖北三江航天红林探控有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] d) The invention uses the slider to isolate the sensitive pyrotechnic element in the explosion transmission sequence from the next-level pyrotechnic element. Considering the safety of explosion-proof and the reliability of detonation, the requirement for the size of the slider is relatively high, which limits its scope of use
[0009] The above-mentioned patent uses a shape memory alloy spring as the driving mechanism, but one of the biggest disadvantages of such a traditional shape memory alloy driver is the long response time, electric heating can make the temperature rise rapidly, but the cooling process is difficult to control, which limits Application of shape memory alloy driver in high frequency occasions

Method used

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  • Micro electro mechanical system fuse security device
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  • Micro electro mechanical system fuse security device

Examples

Experimental program
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Effect test

specific Embodiment 1

[0036] The longitudinal spring slider driver 1 , the transverse spring slider driver 2 and the frame 4 are all formed by integral etching of a 0.4 mm thick TiNi-based shape memory alloy film. Spring I1-2 and spring II2-2 are two-way TiNi shape memory alloy materials shortened at high temperature. The bracket 3-2 is made of machinable ceramic material for the gyroscope.

[0037]Cover plates are installed on the upper and lower end faces of the present embodiment to form a closed fuze safety device. The size of the actual miniature fuze safety device (including the installation cover) is 20mm (length) × 20mm (width) × 1mm (height). Under the condition of 28V power supply, the time for the safety device to be released is about 2s, and the time for the safety to be restored is in place. About 2.5s.

[0038] However, in the patent "A Fuze Isolation Mechanism (Application No.: 201510078579.8)" previously declared by the applicant, under the condition of 28V power supply, the time ...

specific Embodiment 2

[0039] In this embodiment, except that the longitudinal spring slider driver 1 , the transverse spring slider driver 2 and the frame 4 are integrally etched with a 1 mm thick TiNi-based shape memory alloy film. Other compositions and connections are the same as in Example 1.

[0040] Cover plates are installed on the upper and lower end faces of the present embodiment to form a closed fuze safety device. The size of the actually produced miniature fuze security device (including the installation cover) is 20mm (length) × 20mm (width) × 1.6mm (height). Under the condition of 28V power supply, the security device releases the insurance time for about 3.4s, and the insurance is restored in place. The time is about 5s.

specific Embodiment 3

[0041] In this embodiment, except that the longitudinal spring slider driver 1 , the transverse spring slider driver 2 and the frame 4 are integrally etched from a 0.5 mm thick TiNi-based shape memory alloy film. Other compositions and connections are the same as in Example 1.

[0042] Cover plates are installed on the upper and lower end faces of the present embodiment to form a closed fuze safety device. The size of the actually produced miniature fuze safety device (including the installation cover) is 20mm (length) × 20mm (width) × 1mm (height). Under the condition of 28V power supply, the time for the safety device to release the insurance is about 2.3s, and the insurance is restored to its place. The time is about 3s.

[0043] Since the shape memory alloy spring is etched as a whole, microcracks often appear in the spring with a thickness of 0.4mm, and the processing technology is relatively poor, while the number of microcracks in the spring with a thickness of 0.5mm i...

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Abstract

The invention provides a micro electro mechanical system fuse security device. According to the structure of the micro electro mechanical system fuse security device, a longitudinal spring and sliding block driving part comprises a longitudinal fixing support, longitudinal springs and a longitudinal sliding block; one end of each longitudinal spring is connected to the longitudinal fixing support, and the other end of each longitudinal spring is connected with the longitudinal sliding block; a transverse spring and sliding block driving part comprises a transverse fixing support, transverse springs and a transverse sliding block; one end of each transverse spring is connected with the transverse fixing support, and the other end of each transverse spring is connected with the transverse sliding block; the longitudinal sliding block and the transverse sliding block are of a zigzag slot structure in appearance; the two zigzag slots are nested with each other to form a locking mechanism; a cavity is further formed by the zigzag slot structure of the transverse sliding block and used for containing a booster explosive component; the longitudinal spring and sliding block driving part and the transverse spring and sliding block driving part are both formed by integrally etching TiNi-based shape memory alloy thin films. The driving and execution are integrated, an external drive source is omitted, the overall structural size is small, the response time is short, and working reliability is high.

Description

technical field [0001] The invention belongs to the technical field of fuze security, and in particular relates to a micro-electromechanical fuze security device. Background technique [0002] In recent years, the rapid development of micro-electromechanical technology has made weapons and equipment present trends such as miniaturization, digitization, light weight, low power consumption, and intelligence, which have brought subversive effects on future warfare styles and equipment use modes. Using micro-electro-mechanical technology to design the safety and disengagement device can greatly reduce the volume and quality of the fuze. [0003] Based on the security technology of micro-electromechanical fuzes, this technology has key points, difficulties or requirements such as small size requirements, simple assembly operations, and easy packaging. And the existing fuze safety and disarming device mainly utilizes the electromagnetic driver as the driving source, and drives th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42C15/00
Inventor 李响陈亮梅江涛
Owner 湖北三江航天红林探控有限公司
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