Seal safety lock

Abstract

The invention provides a seal safety lock. The lock comprises a main body and a seal locking mechanism, wherein the main body comprises a mounting base and a seal base, the center of the mounting baseis provided with a push rod in a sliding fit mode, and the upper end of the push rod is connected with the output end of a push-pull electromagnet; the seal locking mechanism comprises a push-pull part, a blocking part and an electromagnet, an annular clamping groove is formed in the side wall of the push rod, and an arc-shaped guide part and a first elastic part are arranged in the mounting base; and when the push-pull part is located at the lower limit position, the blocking part can be extruded into the annular clamping groove and up-down movement of the push rod is limited, and the push-pull part and the blocking part are made from a material capable of being attracted to a magnet. When the electromagnet is energized, the push-pull part and the blocking part can be attracted to move upwards to disengage the blocking part from the annular clamping groove. 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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