An idling tamper-proof blade lock cylinder

Abstract

An idle pickproof flat tumbler cylinder comprises an outer lock tube, an inner lock tube, a shifter, an anti-drilling plate and an explosion-roof cover. The inner lock tube penetrates the outer lock tube; the anti-drilling plate covers the outer end face of the inner lock tube. The inner lock tube is provided with a plurality of flat tumbler slots used for mounting flat tumblers; the flat tumblers are slidably mounted in the flat tumbler slot through flat tumbler springs. The inner lock tube is further provided with a lock pin slot used for mounting a lock pin. The idle pickproof flat tumbler cylinder is characterized in that the shifter is mounted at the tail end of the inner lock tube and are separate from the inner lock tube, an engaging-disengaging device disposed between the inner lock tube and the shifter is linked with the lock pin, a linking device disposed inside the inner lock tube can push the engaging-disengaging device to act so that the shifter and the inner lock tube are disengaged or engaged. The idle pickproof flat tumbler cylinder has the advantages that the engaging-disengaging device and the linking device are added to the traditional flat tumbler lock, the inner lock tube is allowed to be idle when locked, drilling resisting and picking resisting are achieved, and unlocking by forcibly rotating the cylinder is prevented.

Description

technical field [0001] The invention relates to a mechanical anti-theft lock, in particular to an idling anti-pry blade lock cylinder. Background technique [0002] In the existing blade anti-theft lock structure, it includes an outer lock tube and an inner lock tube and a lock cylinder arranged in the outer lock tube. The lock cylinder is provided with a number of lock cylinder blades that cooperate with the teeth on the key and the lock bolts on the lock cylinder. The lock cylinder blade is an inner milling tooth lock cylinder blade, including a frame-shaped body with four sides, the upper side of the body is provided with a groove that cooperates with the lock bolt, and one end of the lower side of the body is provided with a blade spring to cooperate with the blade spring. The spring support of the upper side of the body is provided with a bump that matches the inner milling teeth on the key; or the lock cylinder blade is an outer milling tooth lock cylinder blade, inclu...

AI Technical Summary

Problems solved by technology

[0003] Based on the above structure, the existing lock core blade frame body has only one protrusion that matches the inner or outer milling teeth on the key, and the thief can observe the setting method of the protrusion through the endoscope Unlocking is achieved, and the lock can be unlocked by prying off the bump of each blade. The probability of being unlocked is high, which is not conducive to the anti-theft safety of residents

[0004] At the same time, some idling locks have also appeared on the market, but their clutch structures are too complicated. When users use the key to unlock the lock normally, the clutch engagement is prone to abnormality, resulting in the lock cylinder being idling and unable to unlock.

At the same time, there are disadvantages such as high production cost and poor product stability, so it is necessary to further improve the existing lock structure

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