Special-section key and lock head

Abstract

The invention discloses a special-section key and a lock head. The special-section key comprises a main body and a tail part, wherein the main body comprises a first surface, a second surface, a first side and a second side, and is provided with key teeth which are distributed along the length direction of the main body; the lock head comprises a shell, a lock body, a lock core provided with a key hole, and billiard components matched with the key teeth which are arranged on the main body of the special-section key ; the cross section of the main body of the special-section key takes on a wave shape and is formed by three arc-shaped wave sections; the first side of the main body is provided with a first key tooth, and the second surface of the main body is provided with a second tooth close to the arc-shaped top of the first key tooth; the cross section of the key hole on the lock core has a shape matched with that of the cross section of the main body of the special-section key; and two lines of billiard components are available. The special-section key and the lock head have high degree of adaptability, low mutual opening rate and good theftproof property.

Description

Technical field: [0001] The invention relates to the field of locks, in particular to a special-shaped key and a matching special lock head. Background technique: [0002] At present, there are a great variety of locksets on the market with different structures, among which the most widely used in people's lives is the tumbler lock. The lock head of the tumbler lock in the prior art mostly is made up of lock body, lock core and pin assembly, and key hole is provided on the lock core. Its working principle is that when the key corresponding to the lock head is inserted, the tooth surface of the key corresponds to each marble, so that the height of each marble is at the contact surface between the lock body and the lock cylinder, and then the lock cylinder is rotated. Can be unlocked. The shapes of the main body of the key of the common tumbler lock are mostly flat, cross and half-moon shapes, etc., which have defects such as easy imitation, low matching precision, and high ...

AI Technical Summary

Problems solved by technology

The shape of the main body of the key of the common tumbler lock is mostly flat, cross-shaped, half-moon, etc., which have defects such as easy imitation, low matching accuracy, and high mutual opening rate during use.

And this kind of lock head is difficult to prevent the thief from inserting corresponding tools such as a lock gun, a steel sheet, a screwdriver, etc. into the keyhole, stirring or even destroying the pin in the lock cylinder, and forcibly opening the lock, and its anti-theft performance is relatively poor.

And the lock core and the key of the pin lock in the prior art are generally processed by machine tools, which has a large workload and low production efficiency.

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