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H-shaped piezoelectric ultrasonic driver and security protection device

A piezoelectric ultrasonic and drive technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of many parts, complex assembly, increased space and cost, etc. problems, achieve the effect of reducing space, simplifying assembly, reducing space and cost

Active Publication Date: 2019-10-25
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, some fuze safety devices based on piezoelectric drivers need to excite the vibrator to vibrate and drive the mover to move. There are many parts and complex assembly, and guide rails or bearings are needed to realize the coupling contact between the driver and the base to reduce friction. There is a problem of increased space and cost

Method used

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  • H-shaped piezoelectric ultrasonic driver and security protection device
  • H-shaped piezoelectric ultrasonic driver and security protection device
  • H-shaped piezoelectric ultrasonic driver and security protection device

Examples

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Embodiment Construction

[0025] combine figure 1 , an H-shaped piezoelectric ultrasonic driver with a centrosymmetric structure, including an I-shaped metal base 31 and piezoelectric ceramics. The I-shaped metal matrix 31 includes two beams 32 and a vertical beam 33 connecting the centers of the two beams 32, and the drive feet 36 are set on the outside of the two beams 32; the piezoelectric ceramics include two pieces of longitudinal vibration piezoelectric ceramics 34 and four The sheet bending piezoelectric ceramics 35 and longitudinal vibration piezoelectric ceramics 34 are respectively arranged on the upper surface of the corresponding beam 32 , and the bending vibration piezoelectric ceramics 35 are respectively arranged on the inner surface of the beam 32 on both sides of the vertical beam 33 .

[0026] The I-shaped metal base 31 is an integral cutting part.

[0027] The two side walls of the vertical beam 33 are provided with slots 37 at the joints with the cross beams 32 , and the depths of ...

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Abstract

The invention provides a security protection device. The security protection device comprises a fuse base and an H-shaped piezoelectric ultrasonic driver, wherein the fuse base comprises a base body and a side cover, and a side square groove opening is formed in the base body and serves as a movement space of the driver; a fire transmission hole is formed in the lower bottom face of the base body,the side cover is arranged at the opening of the square groove, and ceramic pieces are arranged on the side wall opposite to the square groove opening and the inner wall of the side cover respectively. The H-shaped piezoelectric ultrasonic driver is further provided with a fire transmission channel matched with the fire transmission hole in the vertical beam.

Description

technical field [0001] The invention relates to a fuze safety technology, in particular to an H-shaped piezoelectric ultrasonic driver and a safety device. Background technique [0002] The safety system of the fuze is designed to ensure the safety of the fuze during normal service handling and use. The safety system mainly includes the explosion-proof sequence, the insurance for the explosion-proof mechanism, and the insurance for the ignition control system. The fuze safety system based on the piezoelectric ultrasonic driver has the advantages of controllable muzzle safety distance of the fuze, reversible fuze state, no electromagnetic interference, and rapid response. [0003] At present, some fuze safety devices based on piezoelectric drivers need to excite the vibrator to vibrate and drive the mover to move. There are many parts and complex assembly, and guide rails or bearings are needed to realize the coupling contact between the driver and the base to reduce friction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02H02N2/04H02N2/06
CPCH02N2/028H02N2/04H02N2/06
Inventor 王炅芮苏媛孙栋王新杰
Owner NANJING UNIV OF SCI & TECH
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