A seal safety lock

Abstract

The invention provides a seal safety lock, which includes a main body and a seal mechanism, the main body includes a mounting seat and a seal seat, the center of the mounting seat is slidingly equipped with a push rod, and the upper end of the push rod is connected with the output end of the push-pull electromagnet; the seal mechanism , including a push-pull part, a blocking part, and an electromagnet, the side wall of the push rod is provided with an annular slot, and the mounting seat is provided with an arc-shaped guide part and a first elastic part; when the push-pull part is at the lower limit position, the The blocking part squeezes into the annular slot and restricts the push rod from moving up and down; the push-pull part and the blocking part are made of materials capable of attracting the magnet, and when the electromagnet is energized, it can attract the The push-pull part and the blocking part move upwards to disengage the blocking part from the annular slot, and at this time, the push rod can be driven by the push-pull electromagnet to move up and down.

Description

technical field [0001] The invention relates to a seal, in particular to a seal safety lock. Background technique [0002] Existing seals, especially official seals, are necessary office equipment for units or legal persons to recognize or prove the validity of corresponding documents, and the seal stamped on a document indicates the validity and authenticity of the document. Once the seal is lost and used maliciously by criminals, it will directly or indirectly cause serious consequences that damage the interests of relevant personnel and institutions. Therefore, there are usually special personnel in the company to manage the seal and be responsible for the use, preservation and maintenance of the seal. [0003] However, there are still some special circumstances objectively. For example, the official seals of some enterprises and institutions will be borrowed, and it is impossible for the seal management personnel to follow the seal user to the predetermined place to stam...

AI Technical Summary

Problems solved by technology

[0003] However, there are still some special circumstances objectively. For example, the official seals of some enterprises and institutions will be borrowed, and it is impossible for the seal management personnel to follow the seal user to the predetermined place to stamp the seal; This kind of situation makes the seal management personnel unable to ensure that the seal will be used seriously or maliciously used, so there are smart seals on the market.

[0004] Traditional smart stamps are authorized by passwords or fingerprints and passed through the drive device, usually a push-pull electromagnet to push the stamp down and achieve stamping. When strong magnetism is used for interference, the stamp will be mistriggered or even paralyzed, and there are certain potential safety hazards.

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