Disposable security lock

Abstract

The invention belongs to a security locking device of a container and particularly relates to a disposable lock. The lock sleeve of the lock comprises a lock sleeve shell, wherein a tapered hole is formed in the lock sleeve shell in an axial direction; a billiard seat is arranged in the tapered hole; the outside wall of the billiard seat is tapered; the taper of the outside wall of the billiard seat is fit with the that of the tapered hole; a through hole is formed in the billiard seat axially; the through hole and the small-aperture end of the tapered hole extends forwards to form a lock hole for a lock rod to be inserted into; a billiard groove running through the billiard seat is formed in the hole wall of the through hole radially; a billiard is accommodated in the billiard groove; the depth of the billiard groove and the size of an orifice, which is in the hole wall of the through hole in the billiard seat, of the billiard groove are both smaller than the diameter of the billiard; a limiting baffle plate is arranged on or close to a large-aperture end of the tapered hole; a resetting element, which connects the billiard seat and the limiting baffle plate, is arranged between the billiard seat and the limiting baffle plate; the lock rod comprises a rod body and a rod cap positioned at the tail end of the rod body; the front end of the rod body is provided with a clamping groove; and the billiard in the billiard groove is in clamped fit with the clamping groove at the front end of the rod body. In the invention, the security coefficient of the lock is increased.

Description

technical field [0001] The invention belongs to a locking device for safety protection of containers, and in particular relates to a disposable lock. Background technique [0002] At present, the disposable locks used by container containers in the domestic market have a structure that a coil spring is installed inside the lock sleeve, or a clip spring, and the lock rod is inserted into the lock sleeve until the clip spring or coil spring is buckled on the lock rod. It cannot be pulled out in the reverse direction again, so as to lock the buckle of the container door and achieve the purpose of locking. But there is following problem in this structure: at first, the contact of jump ring and jump ring groove mostly is point contact or line contact, and this just makes the stressed area of ​​jump ring and jump ring groove less, and the meshing force between the two is also small. It is small, thus easily destroyed, resulting in a low safety factor of the lockset; secondly, whe...

AI Technical Summary

Problems solved by technology

But there is following problem in this structure: at first, the contact of jump ring and jump ring groove mostly is point contact or line contact, and this just makes the stressed area of ​​jump ring and jump ring groove less, and the meshing force between the two is also small. It is small, thus easily destroyed, resulting in a low safety factor of the lockset; secondly, when in use, when the lock rod is inserted into the lock sleeve, the top of the lock rod sometimes touches the steel wire of the circlip or coil spring, Difficult to press in or even unusable, inconvenient to use

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