Combined lockset capable of preventing unlocked by universal key

A master key and key technology, applied in the field of locks, can solve problems such as poor security, poor anti-theft performance, and unsatisfactory use effects

Inactive Publication Date: 2007-09-19
李向阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the principles are similar, no matter how the structure of the tumbler group and the key changes, there is always a master key that can open the tumbler lock, so the anti-theft performance is poor
Even if the anti-theft door with multi-lock structure is installed, as long as the keyhole of each lock can be found, the locks can be opened one by one, but

Method used

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  • Combined lockset capable of preventing unlocked by universal key
  • Combined lockset capable of preventing unlocked by universal key
  • Combined lockset capable of preventing unlocked by universal key

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Embodiment of the present invention: the combination lockset that can prevent master key from opening, as shown in Figure 1, it comprises key inlet 1 and key outlet 2, key handle groove 3 is arranged on key inlet 1 and key outlet 2, after key 7 turns Close the key hole 28, the side of the key handle groove 3 can pass through the handle 30 of the key 7, and be used to turn the key 7, the unlocking direction of the present invention can be opened from bottom to top or from top to bottom, in the present embodiment, it is from bottom to top For example, from bottom to top is the advancing direction of key 7; 2 lock pieces 6 are installed between key inlet 1 and key outlet 2, and lock piece 6 is divided into lock body 4 and lock core 5 two parts, and lock body 4 There is a lock body notch 8 for passing through the key 7 handle 30 on the side of the side, the lock body notch 8 has a curved tongue 35, the angle between the key handle groove 3 of the key inlet 1 and the lock bod...

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PUM

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Abstract

The invention discloses a combined lock capable of preventing skeleton key from unlocking, characterized in that key inlet and outlet of the lock are provided on both ends, One or one more locking pieces are provided between key inlet and the outlet, the locking piece is provided with bullet hole, spring and bullet for opening-closing the locking piece, and bullet hole, spring and bullet for forward sliding of the key; There is provided with an angle between lock slot on sides of the up-down locking pieces to enclosing the keyhole. The lock of the invention is formed by combination of a plurality of locking pieces. An angle is provided between key shank grooves of each locking piece, when the lock pin is rotating during unlocking process, the keyhole is synchronously enclosed by using angle difference between key inlet and key shank grooves of each locking piece, thereby preventing skeleton key from unlocking. The key can be kept in the lock by utilization of reverse preventing pin between locking pieces and interior back locking structure, thus, the lost or formulated key can be found, which is safer.

Description

technical field [0001] The invention relates to a combined lock that can prevent a universal key from being opened, and belongs to the technical field of locks. Background technique [0002] In the prior art, the lock pieces of various pin locks used are usually composed of a set of lock body and lock cylinder. There are one or more sets of pins in the lock body and the lock core. Usually, the pins in the lock body are activated by the spring It is stuck in the lock cylinder, and the lock body pin stuck in the lock cylinder is pushed up by the key tooth, and the lock cylinder is turned to open the lock. Because its principle is similar, no matter how the structure of the tumbler group and the key changes, there is always a master key that can open the tumbler lock, so the anti-theft performance is poor. Even if the anti-theft door with multi-lock structure is installed, as long as the keyhole of each lock can be found, the locks can be opened one by one, but the effect of u...

Claims

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Application Information

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IPC IPC(8): E05B35/06E05B17/14E05B27/02
Inventor 李向阳
Owner 李向阳
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