A micro-electromechanical fuze safety 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: 2017-10-24
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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  • A micro-electromechanical fuze safety device
  • A micro-electromechanical fuze safety device
  • A micro-electromechanical fuze safety device

Examples

Experimental program
Comparison scheme
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. The longitudinal spring 1-2 and the transverse spring 2-2 are two-way TiNi shape memory alloy material shortened at high temperature. The bracket 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...

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-electromechanical fuze safety device, which has the following structure: the driving part of the longitudinal spring slider includes a longitudinal fixed bracket, a longitudinal spring and a longitudinal slider; one end of the longitudinal spring is connected to the longitudinal fixed bracket, and the other end is connected to the longitudinal slider; The spring slider driver includes a horizontal fixed bracket, a horizontal spring and a horizontal slider; one end of the horizontal spring is connected to the horizontal fixed bracket, and the other end is connected to the horizontal slider; the shape of the vertical slider and the horizontal slider is a zigzag groove structure, and the two zigzag grooves Nested with each other to form a locking mechanism; the zigzag groove structure of the horizontal slider also forms a cavity for placing booster components; both the longitudinal spring slider driver and the transverse spring slider driver are made of TiNi-based shape memory alloy film etched in its entirety. The invention integrates driving and execution, saves an external driving source, has small overall structure size, fast response time and high working reliability.

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 Patents(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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