Idle mechanical antitheft cylinder

Abstract

The invention provides an idle mechanical antitheft cylinder, which comprises an outer cylinder body, an inner cylinder body, tumblers (or spring strips), a driving block, tumbler springs, a driving block compression spring, a compression spring protecting plate and a stainless steel rod, the outer end of the outer cylinder body is provided with a keyhole, the interior of the outer cylinder body is provided with at least one axial slot (or hole), and the tumblers (or spring strips) with V-shaped notches and the tumbler springs are mounted in the slots (or holes); the upper edge of the outer cylinder body is radially provided with a deep slot, in which the T-shaped or cross-shaped driving block is mounted, the driving block compression spring is mounted on the top of the driving block, the driving block is placed on the tumblers (or spring strips), and the compression spring protecting plate is arranged on the top of the compression spring; the stainless steel rod is mounted on the outer cylinder body along the diameter direction to limit the displacement of the tumblers (or spring strips), the outsides of the outer cylinder body and the inner cylinder body are provided with annular limit grooves, the outer end of the inner cylinder body is inserted in the rear part of the outer cylinder body and provided with a slot matched with the lower end of the driving block, and the inner end of the inner cylinder body is connected with a lock mechanism. The travel of the tumblers (or spring strips) is long, the key number is large, the cylinder can idle, and the antitheft performance is good.

Description

technical field [0001] The invention relates to a mechanical anti-theft lock cylinder. Background technique [0002] At present, the common locks on the market mainly include mechanical locks and electronic locks. The mechanical locks are mainly pin locks. The number of each row increases the difficulty of unlocking, thereby improving the anti-theft performance of the lock; but in fact, the effective stroke of the pins is limited by the size of the lock body. Generally speaking, the effective stroke of the pins is 2 to 3mm, such a small effective stroke It is easy to be opened with the participation of a certain degree of vibration or other human factors, which is why the master key frequently appears, and increasing the number of rows of pins and the number of each row will inevitably cause the size and quality of the lock body of the pins to change. The increase makes the internal structure of the lock body complex and the lock body thick; with the advent of various advan...

AI Technical Summary

Problems solved by technology

[0002] At present, the common locks on the market mainly include mechanical locks and electronic locks. The mechanical locks are mainly pin locks. The number of each row increases the difficulty of unlocking, thereby improving the anti-theft performance of the lock; but in fact, the effective stroke of the pins is limited by the size of the lock body. Generally speaking, the effective stroke of the pins is 2 to 3mm, such a small effective stroke It is easy to be opened with the participation of a certain degree of vibration or other human factors, which is why the master key frequently appears, and increasing the number of rows of pins and the number of each row will inevitably cause the size and quality of the lock body of the pins to change. The increase makes the internal structure of the lock body complex and the lock body thick; with the advent of various advanced tools, there are more and more phenomena of violent unlocking, and traditional mechanical locks are easy to be violently unlocked; electronic locks are under the influence of high technology Emerging products have exquisite structure and good anti-theft performance, but they have higher requirements on the working environment. Unlike mechanical locks, which can be waterproof, moisture-proof, acid-proof and alkali-proof, the electrical components are easily corroded, and changes in acid-base conditions in the environment will even affect The performance of the electronic lock, and it needs to work when there is electricity. For example, the electronic lock installed on the door of the residential house will increase the size and cost of the electronic lock if it is directly connected to the residential electricity. Affected, when a sudden power failure will cause great distress to users

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