High-protection high-safety seal

Abstract

The invention relates to the field of anti-theft locks, in particular to a disposable safety seal used for containers and cargo boxes. The disposable safety seal comprises a lock rod and a lock sleeve; a snap spring is arranged in the inner cavity of the lock sleeve; the snap spring is elastically blocked and matched with the inner wall of the lock sleeve; the front end of the lock rod is inserted in the inner cavity of the lock sleeve; and a necking part at the front end of the lock rod is elastically blocked and matched with a bayonet of the snap spring; and the radial size of the rear end of the lock rod and the radial size of the lock sleeve are larger than that of a body of the lock rod. The disposable safety seal is characterized in that: the front end of the inner cavity of the lock sleeve is thick, the rear end is thin, and the middle part is a reducing transition section; the size of the snap spring along the coaxial direction of the lock rod is smaller than the coaxial sizesof the middle part and the front part of the inner cavity of the lock sleeve; the snap spring driven by the lock rod can move front and back in the middle part and front part of the inner cavity of the lock sleeve along the coaxial direction of the lock rod; and the transition section has stronger centering capacity on the snap spring and the lock rod and the function of tightening the snap spring, and can guarantee to clamp the necking part of the lock rod. The seal has high stability and high safety.

Description

technical field [0001] The invention relates to the field of anti-theft locks, in particular to a safety seal, that is, a one-time safety seal, which is used for one-time blockade of containers, containers and the like. Background technique [0002] The internal design of disposable safety seals currently on the market is specifically as follows: figure 1 , 2 As shown, the safety seal includes a lock rod 2 and a lock sleeve 3, the inner cavity of the lock sleeve 3 is provided with a circlip 1, and the circlip 1 is elastically clamped with the inner wall of the lock sleeve 3, that is, the front end of the circlip 1 or the foot is elastic. ground support on the inner wall of the lock sleeve 3 front ends. The front end of the lock rod 2 is plugged into the inner cavity of the lock sleeve 3, and the constricted portion of the front end of the lock rod 2 is elastically engaged with the bayonet socket of the circlip 1. The rear end of the circlip 1 is slightly smaller than the f...

AI Technical Summary

Problems solved by technology

[0003] There are the following risks in this way: one is when the lock bar 2 is shaken from side to side under the action of external force, that is, figure 1 When the direction of the arrow shown shakes, the circlip 1 will also shake accordingly, and one side of the bayonet and the constriction may be separated, and then the lock lever 2 may be pulled out under a strong external force; or the lock lever 2 may be pulled out under the action of an external force. When turning down, the circlip 1 rubs against the lock rod 2 to generate heat because there is no room for movement. The circlip 1 may soften under high temperature and high heat, so the lock rod 2 may also be pulled out, and then the container can be opened to exchange items. Because the whole process does not destroy the physical structure of the lock sleeve 3 and the jumper 1, the seal can also be re-locked, and criminals can open the container, case and bag without destroying the seal, and exchange articles without leaving traces; Just lose the effect of one-time blocking container, luggage and anti-theft

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