Lock with outer milling blade idler lock cylinder

Abstract

The invention discloses a lock adopting an idling lock cylinder with external milling tooth blades, which includes front and rear lock cylinders arranged in the lock body; Lock the side column; one side of the blade pin is provided with a protruding part that can be matched with the boss with teeth on the key; the rear lock cylinder is provided with a lock pin, and the tail of the lock body is provided with a step to stop the rear lock cylinder; the sleeve The sleeve is fixed on the front lock cylinder and is set on the rear lock cylinder, the sleeve and the rear lock cylinder are in clearance fit, and an elastic positioning bead is arranged between the sleeve and the rear lock cylinder; the tail of the lock pin is tapered; the The tail step of the lock body is provided with a tapered groove matching with the tail of the lock pin. The present invention cancels the lock pin return spring in the prior art, so it can completely solve the problem that the lock cannot be used normally due to the loss of elasticity of the lock pin return spring, improves the reliability of the lock, and prolongs the service life.

Description

technical field [0001] The invention belongs to a mechanical lock, and relates to a lock adopting an idle-rotating lock core of an outer milling tooth blade. Background technique [0002] There is a class of locks in mechanical locks that use idling lock cylinders. The lock cylinders of these locks are composed of front and rear lock cylinders. The clutch between the front lock cylinder and the rear lock cylinder is usually realized by a clutch structure. Chinese patent application 200810031196.5 discloses a clutch structure for an idle lock cylinder. The clutch structure includes a lock pin and a lock pin return spring arranged in the rear lock core, and the clutch of the front and rear lock cores is realized by the lock pin entering or withdrawing from the front lock core. This clutch structure has found some shortcomings during the use process. Due to the frequent unlocking and closing for a long time, the lock pin return spring will have metal fatigue and its elasticity...

AI Technical Summary

Problems solved by technology

This clutch structure has found some shortcomings during the use process. Due to the frequent unlocking and closing for a long time, the lock pin return spring will have metal fatigue and the elasticity will be weakened. In addition, the dirt formed by the wear debris and dust of the parts will further weaken its elasticity. As a result, the lock pin cannot be reset when the lock is unlocked, and the lock is always in an idling state, and the lock cannot be opened, which affects the reliability of the lock.

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