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MEMS safety system based on shape memory alloy

A memory alloy and security system technology, used in offensive equipment, fuzes, weapon accessories, etc., can solve problems such as large space and large volume, and achieve the effects of large driving force, large storage capacity and light weight.

Pending Publication Date: 2022-07-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional fuze safety systems usually have a large volume and need to occupy a large space on the bomb

Method used

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  • MEMS safety system based on shape memory alloy
  • MEMS safety system based on shape memory alloy
  • MEMS safety system based on shape memory alloy

Examples

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Embodiment 1

[0025] This embodiment discloses a MEMS safety system based on shape memory alloy. like figure 1 As shown, it mainly includes a shape memory alloy pin puller 1, a flameproof sliding block 2, a recoil safety mechanism 3 and a locking mechanism 4; the flameproof sliding block, the recoil safety mechanism and the locking mechanism are processed on the same silicon substrate. During the firing phase in the chamber, such as image 3 As shown in the figure, the mass block 3-1 in the recoil safety mechanism compresses the recoil silicon base spring 3-3 to move under the action of the recoil force. The silicon-based recoil insurance mechanism releases the first insurance for the flameproof slider. Due to the magnetic shielding effect of the metal gun barrel, the intensity of the geomagnetic field has a value transition from the inside of the chamber to the muzzle. Change, the shape memory alloy pin puller 1 can be powered by the magnetoresistive sensor and the control circuit, the ...

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Abstract

The invention discloses an MEMS safety system based on shape memory alloy. The MEMS safety system is mainly composed of a shape memory alloy pin puller, an explosion-proof sliding block, a recoil safety mechanism, a locking mechanism and the like. The recoil safety mechanism is used for achieving first safety of the explosion-proof sliding block, the shape memory alloy pin puller is used for achieving second safety of the explosion-proof sliding block, centrifugal force is used for pushing the explosion-proof sliding block to move in place, and the locking mechanism locks the position of the explosion-proof sliding block to complete the safety unlocking action. The invention aims to solve the technical problems of safety and reliability of a small-caliber ammunition fuse safety system in a high dynamic environment and meet the military requirements of microminiaturization, generalization and high reliability of small-caliber ammunition fuses. The invention has the following advantages: (1) the structure size is small; (2) the effect is reliable; (3) the manufacturing cost is low; and (4) the application range is wide.

Description

technical field [0001] The invention relates to a shape memory alloy-based MEMS safety system, in particular to a principle and a design method of a shape memory alloy-based MEMS safety system, and belongs to the field of small-caliber ammunition fuze MEMS safety systems. Background technique [0002] A safety system refers to a combination of devices that prevent fuzes from disarming in the service processing environment, the loading environment, the launch environment, and before reaching a safe distance. As one of the key subsystems of the fuze, the safety system is an important guarantee for realizing the safety of the fuze and improving the reliability of its action. However, traditional fuze security systems usually have a large volume and need to occupy a large bomb space. In addition, since the charge of small-caliber ammunition is greatly limited by the volume of the warhead, reducing the size of the fuze safety system is of great significance to increase the charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42C15/40
CPCF42C15/40
Inventor 代俊许志秋谢晋张崇飞唐彬陶启熊壮邵瑞文
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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