a padlock

Abstract

A padlock, comprising a lock body (5) and a shackle (2). The left and right sides of the front part of the lock body (5) are respectively provided with a lock hole (53) and a shackle hole (52); a shackle spring (21) and one end of the shackle (2) are placed in the shackle hole (52); the shackle (2) is provided with shackle catch slots (20) close to the lock body (5); a cipher block groove (50) is provided at the middle of the lock body (5); a cipher block (1) is provided in the cipher block groove (50); a slider is provided in the cipher block (1) and several pin tumbler pairs are distributed in the cipher block, and the front end of the cipher block is provided with a lock pin (11); when an insertion sheet (4) is inserted into a sheet slot of the cipher block and sheet holes of the insertion sheet matches all the pin tumbler pairs in the slider, the insertion sheet (4) can push the slider forward to drive the lock pin (11); the lock pin (11) on the cipher block groove (50) side in the lock body (5) corresponding to the cipher block (1) is laterally provided with a lock pin opening (502) and a lock pin slot (501); a spline groove (51) is further provided directly in front of the cipher block groove (50); the left and right sides of the spline groove (51) are respectively provided with spline openings that connect the lock hole (53) and the shackle hole (52); splines (3) are placed on the left and right sides of the spline groove (51), and a support plate (31) is horizontally provided at the middle of the spline groove; the middle of the spline groove (51) is provided with a support plate spring hole and a support plate spring (32) is placed therein; the support plate (31) presses the splines (3) tightly under the action of the support plate spring (32), so that the tail parts of the splines (3) pass through the spline groove openings to be located in the cipher block groove (50). The lock has substantial characteristics of strong security, convenience in carrying the key, and easy lock replacement.

Description

technical field [0001] This invention relates to mechanical locks, particularly padlocks. Background technique [0002] Locks are widely used in daily life. Existing locks are roughly divided into two categories: mechanical locks and electronic locks, and mechanical locks are divided into ordinary mechanical locks and password mechanical locks. [0003] Ordinary mechanical locks are cheap to manufacture and are the most widely used, but their security is poor, the key is easy to be copied, the key is thick and heavy, and it is very inconvenient to wear it when going out. In addition, when the mechanical lock needs to be replaced, it usually needs to be replaced as a whole or the lock cylinder, which is cumbersome. [0004] The password mechanical lock does not need to wear a key, but the password must be remembered. Nowadays, people have too many passwords to remember, which is easy to confuse. [0005] Compared with mechanical locks, the security of electronic locks is h...

AI Technical Summary

Problems solved by technology

[0003] Ordinary mechanical locks are cheap to manufacture and are the most widely used, but their security is poor, the key is easy to be copied, the key is thick and heavy, and it is inconvenient to carry it around when going out

In addition, when the mechanical lock needs to be replaced, it is usually necessary to replace the whole or replace the lock cylinder, which is troublesome.

[0004] Password mechanical lock does not need to wear a key, but you must remember the password. Nowadays, people have too many passwords to remember, which is easy to confuse

[0005] The security of electronic locks is higher than that of mechanical locks, but it needs to set up a special decoding circuit. The manufacture of the lock is more complicated and the cost is also high. Due to the use of large-scale integrated circuits, it is prone to failure

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