Dismountable composition type piezolighter in high stability

Abstract

A piezoelectric igniter being able to be dismounted and combined is prepared as checking piezoelectric ceramic integrated body on shell through base, forming said piezoelectric ceramic integrated body by integrating piezoelectric ceramic and piezoelectric anvil as well as piezoelectric base in a three-way body them sealing and fixing piezoelectric anvil and piezoelectric base separately on top and bottom ports of said three-way body.

Description

technical field [0001] The invention relates to the field of piezoelectric igniters, in particular to a detachable, combined and high-stability piezoelectric igniter. Background technique [0002] The basic components of the existing piezoelectric ignition device include hammer and cross bar, piezoelectric ceramics, piezoelectric anvil, piezoelectric seat, percussion spring, return spring, button, housing, output electrode, and its basic structure is divided into buttons, The firing part composed of the hammer, the firing spring and the return spring and the body part including the casing, the piezoelectric anvil, the piezoelectric seat, the piezoelectric ceramics and the output electrode. The structural feature of the current similar piezoelectric ignition device is that the piezoelectric anvil, piezoelectric ceramics, and piezoelectric seat are directly packaged in the inner cylinder cavity of the lower half of the body and the lower part of the body, and the piezoelectric...

AI Technical Summary

Problems solved by technology

[0003] 1. After the glue is cured, the piezoelectric ceramics are glued to the inner cavity wall of the shell by the glue, which blocks the normal displacement of the piezoelectric ceramics after being hit and affects the voltage performance;

[0004] 2. After the piezoelectric ceramic is hit and vibrated, the cured glue wrapped around the piezoelectric ceramic is easy to peel off from it, resulting in a gap, easy breakdown between the two poles, and internal discharge phenomenon;

[0005] 3. The glue filling process is cumbersome. Since the glue will solidify, it needs to be vacuumed in time and stored at regular intervals. The layout of the production site is strict, which also affects the production cycle;

[0006] 4. For defective products due to improper glue filling process and other reasons, since the shell, piezoelectric ceramics, piezoelectric anvil, metal base, and pole pieces have been fixed into a whole, it is difficult to disassemble. This part cannot be recycled, only Can be scrapped;

[0007] 5. Filling glue from the electrode connection port, it is difficult to completely drain the air bubbles around the piezoelectric ceramics and other parts, increasing the possibility of internal discharge;

[0008] 6. Due to factors such as the tolerance of plastic parts and metal cap accessories, especially the installation method of the metal cap rotating and pressing, it is difficult to ensure the close connection between the bottom surface of the inner wall of the metal cap and the surface of the piezoelectric ceramic electrode, and a certain angle may be formed. Uneven stress on the surface of piezoelectric ceramics, prone to cracking

[0009] 7. The occurrence of the above-mentioned points 5 and 6 cannot be directly detected by naked eyes, which is not conducive to the improvement of the pass rate of products in the subsequent process.

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