FI83560C - FOERFARANDE OCH ARRANGEMANG I SPAERRSKIVACYLINDERLAOS FOER FOERHINDRANDE AV UPPDYRKNING. - Google Patents

Description

1 83560

Method and arrangement for preventing torsion of a plate disadvantage cylinder lock

The invention relates to a method and an arrangement for preventing tampering with a plate disadvantage cylinder lock, the plate disadvantage cylinder lock comprising: an outer cylinder of the lock; the inner cylinder; a plate pack fitted inside the inner cylinder and comprising plate baffles and spacers therebetween;

An experienced tamper is able to rotate the plate handicaps to the unlocking position of the lock, i.e. the circumferential indentations align with the detent bar in as little as a few tens of seconds, so that the locking security no longer serves its purpose. In the past, attempts have been made to find a solution to this problem and to make it more difficult to make dummy notches on the perimeter of the plate hammer, so that when twisted on the folding bar the dummy notch is intended to give the impression that the perimeter is correct. However, an experienced teaser will quickly distinguish the false notch from the right one and thus the false notches will not satisfactorily achieve the desired purpose - the lock can still be opened fairly quickly by torture.

The object of the present invention is, above all, to eliminate the disadvantage associated with conventional plate disadvantage cylinder locks of relatively easy tearability and thus to improve the locking reliability of the plate disadvantage cylinder lock.

This object is achieved according to the method according to the basic principle of the invention by applying a spring load to the plate handler by means of a spring load acting on the plate handicap to actively deflect it from the opening combination, and by arranging at least one 83560 tea hand at least one disc disadvantage actively removed from the opening assembly.

According to a particularly preferred embodiment of the invention, a spring means for deviating the plate disadvantages from the opening combination is arranged on the outer circumference of a plate package consisting of plate disadvantages and spacers, the spring means extending substantially over said plate package. In this case, it is recommended that the spring means be arranged between the radial tongues limiting the radial rotation of the plate disadvantages and one boundary wall in the wall of the inner cylinder surrounding said plate package, which determines the torsional rotation space.

Among the main advantages of the invention, it can be mentioned that the already existing plate disadvantage cylinder locks are easy, i.e. without structural changes, to utilize the method and arrangement according to the invention, that the spring means is economically quite economical to implement and technically reliable and does not interfere with normal operation.

The invention will now be described, by way of example, in more detail with reference to some preferred embodiments thereof, with reference to the accompanying drawings, in which Figure 1 is a cross-sectional view of a plate drawbar lock provided with an arrangement according to a first preferred embodiment of the invention; Fig. 4 is a sectional view taken along line IV-IV of Fig. 3 of a cross-section of a plate detonator cylinder lock provided with an arrangement according to another preferred embodiment of the invention. The plate deterrent cylinder locks shown in Figures 1 and 3 include: an outer cylinder of the lock; inner cylinder 5; a disk package arranged inside the inner cylinder and comprising disk disadvantages and spacers 3 therebetween. The disk disadvantages 1 are the last disk disadvantages of the disk packs in the key insertion direction and are shown in more detail in Figures 2 and 4. Further

II

3 83560 includes the locks shown in Figs. it is possible to open the lock.

As already stated above, the method according to the invention actively seeks to deflect the plate disadvantages 1 away from the opening position. To achieve this object, the arrangement according to the invention comprises a spring means 2 acting on at least one disc disadvantage 1, preferably however as shown in Figures 1 and 3, which actively deflects the disc disadvantage or disadvantages 1 from the opening combination.

In order not to make structural changes to the arrangement according to the invention in order to place the arrangement according to the invention in the plate disadvantage-found plate lock, a spring means 2 deviating from the plate combination 1 is arranged on the outer circumference of the plate package consisting of plate disadvantages 1 and spacers 3. In order to obtain a compact structure, it is then possible to utilize the longitudinal groove 6 existing in the inner cylinder 5, which determines, through the tongues 4 in the baffle plates, the defining space of the baffle plates 1. It is thus advantageous to fit the spring means between the radial tongue-limiting tabs 4 of the plate handles 1 and one boundary wall of the longitudinal groove 6 in the wall of the inner cylinder 5 surrounding the plate package.

The first, i.e. according to the embodiment shown in Figures 1 and 2, the spring means 2 consists of a single bending spring running on the outer circumference of the plate package obliquely to one tab 4 of the disc disadvantage 1. Thus, in this embodiment, the tabs 4 of the disc disadvantages are not all so-called. in the basic position against the spring means 2 but closer to the inlet end of the keyway, the tabs 4 of the plate handles 1 press against the side of the spring means 2 only when they are twisted some distance, the farther the deflection torque is further from the keyway inlet.

The second, i.e. according to the embodiment shown in Figures 3 and 4, the spring means 2 consists of one so-called a bell spring having a helically wound portion and a substantially straight portion. In this second embodiment, in order to apply an increasing spring load when rotating the plate barrier 1, the helically wound portion of the spring means 2 is fixedly fixed to the inner cylinder 5 and the straight portion of the spring means extends straight thus keeping the plate disadvantages 1 in a basic position enabling the insertion of the key, in which the tongues 4 are against the second boundary wall of the longitudinal notch 6, and prevent, for example, the rotation of the plate disadvantages caused by vibration. This arrangement according to a second embodiment of the invention is thus excellently suitable, for example, for ship use in cabin locks.

The invention has been described above only by means of some of its preferred embodiments. This is of course not intended to limit the invention and, as will be apparent to those skilled in the art, various structural changes and variations are possible within the scope of the appended claims, so that one substantially longitudinal spring means can be replaced by a plurality of coil springs. It is also possible to use an elastic strip of material returning to shape between the tab of the plate barrier and the boundary wall of the longitudinal slope of the inner cylinder to deflect the plate barrier out of the opening combination.

Claims (3)

1- Arrangement in a latch disk cylinder lA to prevent cultivation, which latch disk cylinder lAs exhibits: - the outer cylinder of the lAs, - an inner cylinder (5), discs (3), - a locking rod (9), which is movable in a longitudinal direction (8) of the inner cylinder (5), and which reads the inner cylinder (5) and the outer cylinder, and which can be moved in the opening position of the lAs radially inserting a sleeve consisting of circuit recesses (10) of the locking discs (1), releasing the inner cylinder (5), and - a spring means (2) acting at least at a locking disc (1) At least at the opening position of the lase to heal it. . said At least one locking disc away from the opening combination of the 1Aset, characterized in that the spring means is a bending or so-called 'spring which extends substantially straight over the entire disk packing (1,3) on its outer circuit arranged between the locking discs. (lj. radial ledges (4), which restrict rotational motion, and a boundary wall of a wall (6) surrounding the inner cylinder (5) "wall" surrounding the wall (6), which determines the rotational reserve of the ledges (4). 2. Arrangement according to claim 1, characterized in that the spring means is a bending spring (2), the first end of which is firmly attached to the inner cylinder (5), the other end of which is free - and at least a locking disc (1). ) (4), and which ..:. runs on the outer circuit of the disk pack (1,3) in an oblique position in the former, with respect to the geometric longitudinal axis of the disk pack (1,3). Arrangement according to claim 1, characterized in that the spring means (2) is a so-called. spring, the first of which is pA spirally rotated, is fixedly fixed to the inner cylinder (5), and the other end of which is free, and which runs on the outer circuit of said disk pack substantially straight and in the direction of the geometric longitudinal axis of said disk pack supporting the ledges (4) of the pulleys (1), the spring means (2) holding the pulleys (1) in position against the second boundary wall of said recess (6). Il