Improved lock head

Abstract

The invention discloses an improved lock head comprising a lock body, a lock core, billiards with V-shaped grooves, and locking side columns which are matched with the V-shaped grooves on the billiards; at least two rows of billiards are not arranged on the same straight line; penetrated guide grooves are arranged on the locking side columns along the radial direction of the lock core; one row of billiards are matched with the sides of the locking side columns; and other rows of billiards are arranged in the guide grooves of the locking side columns and are matched with the end walls of the guide grooves. According to the improved lock head, because the billiards are additionally arranged in the lock core with limited volume, the key amount of the lock core can be greatly improved, and the inter-opening rate of the lock core is reduced. Due to the arrangement of the guide grooves on the locking side columns, the locking side columns can always be kept at a balanced state under the guidance of the billiards in the guide grooves during moving, so that one parts of the locking side columns are not retracted into the lock core and only a small parts of the locking side columns are clamped in a lock body, a non-matching key is prevented from unlocking, and the security of the lock core is improved.

Description

technical field [0001] The invention belongs to locks, in particular to an improved lock head. Background technique [0002] Among the existing pin locks, there is a lock head of a pin lock (such as ZL99115581.5 patent) which adopts a locking side post and a V-shaped groove pin on the lock core sleeved in the lock body to cooperate to control the opening and closing of the lock core. The advantage of this kind of lock is that it has better performance in preventing technical unlocking and violent prying and twisting, but there are also some problems: first, there is only one row of marbles, the amount of keys is low, and the mutual opening rate is high; When the side column moves radially along the lock cylinder to open and close the lock cylinder, it will tilt to both sides. When using a non-matching key cover to lock, part of the locking side column will retract into the lock cylinder, and only a small part will be stuck in the lock cylinder. In the lock body, it is easy ...

AI Technical Summary

Problems solved by technology

[0002] Among the existing pin locks, there is a lock head of a pin lock (such as ZL99115581.5 patent) which adopts a locking side post and a V-shaped groove pin on the lock core sleeved in the lock body to cooperate to control the opening and closing of the lock core. The advantage of this kind of lock is that it has better performance in preventing technical unlocking and violent prying and twisting, but there are also some problems: first, there is only one row of marbles, the amount of keys is low, and the mutual opening rate is high; When the side column moves radially along the lock cylinder to open and close the lock cylinder, it will tilt to both sides. When using a non-matching key cover to lock, part of the locking side column will retract into the lock cylinder, and only a small part will be stuck in the lock cylinder. In the lock body, it is easy to open the lock cylinder, which affects the safety of the lock cylinder

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