Three-keyhole double layer lock master U-shaped lock for motorcycle

Abstract

A U-shaped lock with 3 key holes and double layers of lock cores for motorcycles is provided, which is a novel structure with 18 lock points in 3 rows, two layers of steel lock cores and 3 keys unlocking one lock at the same time, thereby solving the problems of lock picking and shearing. The U-shaped lock comprises a front cover, a main housing and a rear cover position-welded on the circumference; the internal lock core is installed in the external lock core and the both lock cores are arranged in the main housing; 18 lock core holes in 3 rows on the two layers of lock cores and the main housing are totally and sequentially provided with 18 lower lock posts which are cylindrical support shaped with equal axial length, 18 upper lock posts, 18 lock post springs and 18 lock post hole plugs; 2 swiveling shafts are riveted on the rear end wall of the external lock core; a left and a right lock pieces, a coupling plate, a coupling shaft and a lock ring are respectively connected together and installed together on the swiveling shafts; the left and the right lock pieces are positioned in the 2 open grooves on the rear cover, the lock spring and the spring rail rod are installed on the coupling shaft and installed together in the long sinking groove; the U-shaped lock rod with the diameter of 28mm is installed on the combined lock body; The U-shaped lock thereby improves the safety quality of the locks for motorcycles against picking and shearing.

Description

Technical field [0001] The invention relates to a lockset for motorcycles, in particular to a U-shaped lock with three keyholes and double-layer lock cylinders for motorcycles. Background technique [0002] In the field of locks used by motorcycles, the structures of known various locks and locks in other fields are basically the same, all of which are composed of 5 lock points, a single copper lock cylinder, an outer shell and a lock bar or a chain, and, All kinds of locks have been continuing the traditional structural mode of one key to open one lock for many years. With people's demand for anti-theft of motorcycles, the requirements for anti-skid and shear performance of motorcycle locks are getting higher and higher. However, the anti-skid and shear performance of the motorcycle locks in the prior art are very low. The reason for this problem is that the traditional locks have fewer locking points, the diameter of the copper lock cylinder is small, and the hardness is l...

AI Technical Summary

Problems solved by technology

[0002] In the field of locks used by motorcycles, the structures of known various locks and locks in other fields are basically the same, all of which are composed of 5 lock points, a single copper lock cylinder, an outer shell and a lock bar or a chain, and, All kinds of locks have been continuing the traditional structural mode of one key to open one lock for many years. With people's demand for anti-theft of motorcycles, the requirements for anti-skid and shear performance of motorcycle locks are getting higher and higher. However, the anti-skid and shear performance of the motorcycle locks in the prior art are very low. The reason for this problem is that the traditional locks have fewer locking points, the diameter of the copper lock cylinder is small, and the hardness is low. The softer The copper single lock cylinder has poor anti-pry performance, and the diameter of the lock rod is small and the shear strength is low

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