Blocking Device and System for Mechanical Lock

Abstract

Blocking devices to stop movement of mechanical or magnetic coded rotors, pins or discs immediately when the plug is turned.

Claims

1. A control device, particularly for use in a mechanical or magnetic cylinder lock, comprising, a. a housing defining a cylindrical passage; b. a cylindrical plug that fits into said passage for rotational movement relative to said housing; c. a keyhole through the front end of said plug; d. a means between said plug and said housing for blocking the rotational movement in one axial position of said plug and for unblocking the rotational movement in another axial position thereof; e. said plug having at least one longitudinal groove and a multiple of rotary members each supported for rotation about an axis transverse to said longitudinal groove; and f. blocking bars extending in longitudinal direction between said plug and said sleeve and to stop said rotary members movement immediately when cylindrical plug is rotated in said housing. A blocking system to stop movement of mechanical or magnetic coded rotors, pins or discs comprising, a. rotary members mechanically or magnetically coded; b. at least one bar that will arrest rotational movement when in one axial position and allow it in another axial position; c. a key matching said mechanical or magnetic coding; and d. at least one blocking bar that will arrest rotor, pin or disc movement.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is an exploded perspective view example of a lock of the present invention;

[0007] FIG. 2 is a cross-sectional front view of a part of the lock according to FIG. 1;

[0008] FIG. 3 is a cross-sectional side view of a part of the lock according to FIG. 1;

[0009] FIG. 4 is a cross-sectional top view of a part of the lock according to FIG. 1;

DETAILED DESCRIPTION OF THE INVENTION

[0010] Referring now to the invention in more detail, FIG. 1 shows parts of a cylinder lock according to the invention. The control device of this invention includes a stationary housing 1 defining a cylindrical passage in which a cylindrical plug 2 is arranged for rotation about its center axis. Plug 2 defines a central key channel into which a magnetically coded key is insertable from the front.

[0011] FIG. 2 shows a cross-sectional view from the front of the lock. Rotor blocking bar 3 is positioned so that when the core 2 is rotated respective to the housing 1 slightly, it will contact Point 5 and retract towards the center of the plug 2 until Point 7 touches rotary members 4 at point 6 preventing their movement entirely.

[0012] If rotation continues sidebar 2 in FIG. 4 will begin to travel up until pins 5 meet rotary members 4. If all pins 5 encounter correct gates 6 in FIG. 3, the sidebar 2 in FIG. 4 can continue travel forward until it is in the unlocked position. The unlocked position is determined by milling in the sidebar 3 in FIG. 4 to match up with counter-milling in the housing 1.

[0013] If any pin 5 does not encounter their respective correct gates 6 in FIG. 3, the sidebar 2 will not move and will arrest further movement of the plug 2. At this time a manipulation or picking attack cannot be successfully completed as the rotary members 4 are not movable. As the rotor members 4 are totally arrested in movement, no information of their position can be obtained either.

[0014] FIG. 3 shows the correct blocking bar channels 3 for the rotor blocking bar 3 in FIG. 1.

[0015] A key comprising of a coding to match rotors 4 in FIG. 1 would enter hole in the front of plug 2 to manipulate rotors 4 into their correct position. Upon turning said key, the blocking system would then engage to prevent any further rotor 4 movement. Sidebar 5 would then travel longitudinally forward until in the axial unlocked position relative to housing 1 and the plug 2 could rotate freely 360 degrees.