CS231302B1 - Lock with divided tumblers operated by key - Google Patents

Abstract

The repair of the lock according to the invention is to be provided making the opening of the lock more difficult by manipulating the set pins with the use of functional clearances and manufacturing tolerances pins and guide holes. The essence of the invention is that it is split tumblers, especially pegs, formed in the mold pins (2), and tumbler guides moving parts (4) 1 of the fixed lock part (5) are provided with transverse grooving in the vicinity of the separating joint the same e-pitch profile arranged ' to Threaded helix

Description

(54)

Lock with split tumblers, calm controlled

By repairing the lock according to the invention, unauthorized opening of the lock should be made difficult by gradual manipulation of the adjusting pins using functional clearances and manufacturing tolerances of the adjusting pins and guide holes. The principle of the invention consists in that the split tumblers, in particular pin pins (2) and tumbler guides in the movable part (4) 1 of the fixed part (5) of the lock are provided with transverse grooving of the same pitch profile e threaded helix.

BACKGROUND OF THE INVENTION The present invention relates to a lock with a split tumbler operated by a key, in which an increase in the security effect is achieved by providing tumblers and guide holes.

Currently, for other applications, door locks are often utilized by the known lock principle with a rotating drum and adjustable two-part cylindrical pins. Such locks usually take the form of so-called lock inserts with flat profiled keys provided with functional notches. By inserting the corresponding key, the set pins, which are usually a number (usually five), will all set them in their guide holes to a position in which the pin splitters coincide with the guide pin divider in the fixed and movable (rotary) part of the lock. In such a position the lock is unlocked and by turning the movable part it is possible to control the bolt or latch lock mechanism. In the case of insertion of the wrong spanner, the splitting joints of the adjusting pins not corresponding to the rotation are prevented.

Locks with cylindrical adjusters made this way! the pins have a serious deficiency. By suitable gradual manipulation with the adjuster! The pins can be relatively easily opened without the key and without knowing the combination of the functional key slots, with sensitive movement or non-rotation of the movable part relative to the fixed one, using the functional clearances and manufacturing tolerances of the set pins and guide holes. This is circumvented by various manufacturers by increasing the number of spacing pins of the adjusting pins and the joints of the moving parts, increasing the number of spacing pins, the different spatial orientation of the pins and the splitting joints, barriers for inserting objects other than keys, etc. A common disadvantage of these modifications is the complexity of the flow locks and hence the higher production cost.

The aforementioned drawbacks are overcome by the lock according to the invention, which is based on the design of the pins and guide holes such that they are provided in the vicinity of the dividing joint with transverse grooves of the same profile and pitch, arranged in a threaded screw.

By serring the set pins and guide holes around the separating gap, the safety effect of the lock is much higher than the locks with smooth set pins and guide holes. The generally widely used external form of the lock and key can remain completely unchanged with the invention.

The function of the knurled set pins and holes, when actuated by the corresponding key, is identical to the function of the previously used smooth pins and will therefore not be described. The attached figure illustrates one of the possible positions of the knurled split pin according to the invention while deliberately manipulating the adjusting pin in an attempt to open the keyless lock using clearance and tolerance production. The free handling in the direction 1 of the split pin while the adjusting force 3 is applied to the movable part 8 is limited when the grooving of one of the two adjusting pin parts fits into the grooving of the guide hole in either the movable part 6 or the fixed part 8.

Finding the correct pin position becomes random and time consuming. With the increasing number of split pins, the number of possible positions relative to the combinatorics is undesirably increased and opening the lock in this way becomes problematic.

Claims (1)

SUBJECT MATTER Key operated tumbler lock, characterized in that the tumbler tumblers and tumbler guides in the movable part (4) and the fixed part (5) of the lock are provided with transverse grooves of the same profile and spacing arranged in the shape of a screw in the shape of thread.