FR2559824A1 - CODABLE LOCK CYLINDER - Google Patents

Abstract

THE INVENTION RELATES TO A LOCK CYLINDER. IN ACCORDANCE WITH THE INVENTION, IT IS A LOCK CYLINDER WITH ROTOR AND STATOR, INCLUDING RADIAL HOLES HOUSED IN THE ROTOR AND STATOR AND COMING IN ALIGNMENT IN AN OPENING POSITION OF THE LOCK CYLINDER, AS WELL AS LOCK CYLINDER. LOCKING PINS MOUNTED WITH THE POSSIBILITY OF MOVING IN THE SAID HOLES, CHARACTERIZED BY AT LEAST ONE ADDITIONAL SHEAR LINE SL2, SHAPED BY ROTOR 22 AND BY A ROTOR SLEEVE 23 WHICH IS ARRANGED CONCENTRICALLY AROUND ROTOR 22 AND WHICH IS RADIALLY PRESENT WITH HOLES LOCK 30, 30 AND IN THAT CX CODING DISCS NOT RIGIDLY CONNECTED TO LOCKING PINS 33, ARE PROVIDED IN THE EXTENSION OF SAID LOCKING PINS. APPLICATION ESPECIALLY TO SECURITY LOCKS WITH HIERARCHISE CODING.

Description

The invention relates to the field of safety techniques for

  the locks, and relates to a cylinder of

  rotor and stator lock, with locking pins

  different lengths acting between them and establishing the code. In lock cylinders, which are increasingly widely used at present, and corresponding to an imposed standard, we have not yet resolved, except

  insufficient, a large number of problems

  surrounding security. One of them is the problem of

  everywhere, and another is the problem of key copying.

  In certain fields of application, these two problems

  simultaneously depend on each other and are closely

  especially in all cases where a large enough

  number of users or key holders corresponding to

  lay out important hierarchies about keys. Such hierarchies concerning lock cylinders and keys can, because of their functional homogeneity, be considered as closure systems; this concept is also used for

specialized circles.

  A closure system, whose users, ie key holders, are essentially always the same for a period of time, is used in communities, corporations, etc .; we find

  key holders who change frequently or permanently

  this, in public services, hotels and ensembles

  similar utilities. In practice, all these systems use

  read hierarchical scheduling, with keys to

  Unlimited access and limited access keys, and there arises in this case a particular security problem for key owners constantly changing, that is to say temporary. This is the case for the loss of a key

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  part of the closure system. The higher the rank of the lost key, the more urgent the recovery of the previous condition becomes and at the same time

  important times. The essential measure is to replace

  place the cylinder locks concerned; it is also the measure adopted in most cases.

  The object of the invention is to provide a

  closure system which allows a classical hierarchy of keys, and which makes it possible, in the case of the loss of a key belonging to this hierarchy, to restore the

  initial security inside the hierarchical structure

  by taking the simplest possible measurement, and without having to disassemble or replace the cylinder or cylinders

of lock concerned ..

  Another object of the invention is to arrange the closure device so that it is suitable for

reversible keys.

  According to the invention, the service cylinder

  is characterized by at least one shear line

  additionally formed by the rotor and a rotor sleeve which is arranged concentrically around the rotor and which has radial locking holes, and in that the coding discs are not rigidly connected to the rotor.

  locking pins, are provided in the extension

  said locking pins.

  An advantageous arrangement provides that the posi-

  The rotor assembly has an additional radial hole for

  born to receive at least one coding disk. In another embodiment, the rotor is provided with a recess in the form of a cylindrical sector,

  and that the rotor sleeve has a locking pin

  cage oriented radially towards its center, the rotor and the rotor sleeve being arranged relative to each other so that the locking pin penetrates

in the recess.

  Another embodiment is characterized

  the fact that for the formation of a third shear line a second

  rotor sleeve with radial radial holes

  rust and arranged over the first sleeve of

  rotor, concentrically with it and the rotor.

  The invention will be described hereinafter with the aid of the attached single drawing, which represents a view

  in section of a lock cylinder arranged according to the in-

  vention. The drawing shows a lock cylinder comprising a stator 10, a multi-sleeve rotor

  multi-element latches 30 functioning

  tionally on the stator and the rotor, and a keyway 40 formed in the rotor. The stator 10 in the form of a hollow cylinder is disposed in an envelope

  eccentric hollow 12, which has a peripheral circumference

  a radius corresponding to the norm of the lock cylinders. The stator 10 is arranged eccentrically with respect to the center of the circular periphery of the stator sheath, being offset by a length b relative to

  to the axis of the key passage channel. Inside

  The multi-sleeve rotor 20 is arranged in the form of a hollow cylinder 20. In this example, this multiple-sleeve rotor 20 comprises a core 22 provided with a key-passing channel 40, a first sleeve 23 in the form of a cylinder. hollow surrounding the core 22 of the rotor, and a second sleeve 24 in the form of hollow cylinder surrounding the core and the first sleeve of the rotor. The core and the rotor sleeves are arranged concentrically with each other. Between the core 22 and the first sleeve 23 of the rotor, there is provided a first shear line SL1; between the first rotor sleeve 23 and the second

  sleeve 24, a second line of shears is provided.

  SL2; between the second rotor sleeve 24 and the stator 10, a third shear line SL3 is provided. The relative movements between the core, the rotor sleeves and the stator are controlled by the locks with several

elements 30.

  A multi-element latch 30 consists, from the key, in principle of a locking pin 33 penetrating into the key recesses, of at least one coding element Cx in the form of a hollow cylinder intended to fill the gap. encoding function, and an opposing latch 32 on which acts a helical spring 31. In Figure, it has simply shown, to improve understanding of the drawing, two locks among the five that it is typically possible to adopt for this mode this construction, namely on the one hand a latch operating on the narrow side of the key in a locking plane 37, and secondly a latch 90 relative to the previous, operating in a plane of

  lock 36 '. Another locking plan 36 associates

  connected to a latch 90 and two locking planes 35,

  'each associated with a lock at 45 (and which can

  to be deleted also) have been symbolically schematized by one axis, in view of the reception of three other multi-element locks. The patent CH-621 175

  represents a non-reversible lock cylinder,

  five rows of locks which are arranged in the same way as in the present figure o there are only two locks. In the rotor core, there is further provided a

  recess 45 in the form of a circular ring segment.

  S9824 -5- The angle formed between the two limit radii is approximately one eighth of a turn. A locking pin 41 fixed in the first rotor sleeve 23,

  penetrates the recess 45 and allows a rock movement

  tation, limited in correspondence along the first

  shear line SL1, between the core 22 and the first

  first sleeve 23 of the rotor. In addition, there is provided in the first rotor sleeve 23 a blind hole, or at least a hole 50 closed in the direction of the second shear line SL2, to receive a latch 32 and a helical spring 31 acting on it, and one

  coding element in the form of a circular cylinder C50.

  The two means, namely the recess 45 associated with the locking pin 41 on the one hand, and the blind hole 50

  with the opposing latch Z2 subjected to the voltage of the

  as well as the coding element C50, on the other hand,

  wind to change the closing code.

  The multi-element lock 30, shown in section at the locking plane 37, moves in a hole 30 'of a determined length. From the key 40 'engaged in the passage channel 40, the multi-element lock has the following structure: a

  locking pin 33 penetrating the recess cor-

  respondent of the key, then above a coding element

  C3, which represents the coding element C50 which is

  in an exit condition out of the blind hole 50, and then above a coding element C23 associated with the first

  rotor sleeve 23, then a coding element C24 as

  associated with the second rotor sleeve 24, then another

  coding element C10 disposed in the stator 10 and correspondingly

  thanks to a master key coding, and finally an

  The multi-element latch 30 located in the locking plane 36 'has a similar structure, namely a locking pin 33, then an associated coding element C1.

  to the first rotor sleeve and corresponding to the

  standard, then a second coding element C2 as-

  associated with a separate closure with a master key and then, as the last component, the counter-lock 32 associated with the pressure spring 31. The latter lock is

  also housed in a hole 30 "of determined length.

  The figure makes it easy to understand that

  coding elements block or release the locks

  components depending on the arrangement of the sleeves

  and shear lines. This blocking and liberation

  The shear lines or rotor sleeves between them are respectively controlled by means of a key pierced in correspondence, that is to say coded. Thus, different shear lines may be associated with special closure functions; for example, the shear line SL1 between the rotor core 22 and the first rotor sleeve 23 is released only by the drilling pattern of a key for the closing code change; the shear line SL2 between the first rotor sleeve 23 and the second rotor sleeve 24 reacts to the drilling pattern of a normal key or an individual key; the shear line SL3 between the second rotor sleeve 24 and the stator 10 reacts to the drilling pattern of a group key or master key. This gives the possibility, with a single key and with types

  corresponding holes, to distribute the keys by group

  pes and, in the case of the loss of an individual key, modify at will the position of one or more of the five locks in the lock cylinder. Thanks to this, it is not necessary to provide new keys for all

  closing group because changing a lock does not

  - 7 - does not drag a change in the group passcode. In the case of five locks changeable in a lock cylinder, it is possible without having to

  replace a cylinder, theoretically

  than 2 power 5, that is 32 individual key losses. The hole 30 'of the locking plane 37 has a length such that the locking pin 33 can descend into the rotor core 22 far enough for the coding element C50 to be able to fit in the rotor core 22, and to move in one direction or the other between the blind hole 50 and the hole of

  30 'lock. This length depends on the depth

  Drilling nozzle of the stepped hole L in the rotor core 22. The descent movement of the coding element C50 is ensured by means of a change key comprising

  the corresponding drilling pattern for this change.

  For this purpose, the rotation between the two holes

  to change an encoder element is limited by the locking pin 41 penetrating into the recess 45

  and fixed in the rotor sleeve 23. In the FIG.

  presented, the lock cylinder is placed in a

  change position; the first line of shears-

  between the core 22 and the first sleeve 23 of the rotor

  is alone released, while the other lines of

  seam are blocked, that is to say that a change key with its specific drilling pattern is engaged in the key passage channel 40. It should be noted in this respect that with the type of drilling of the

  key of change, each row of lock can inter-

  come, which is the case on the drawing for the lock to. This considerably increases the security of closure, because for example the key of change can not be differentiated easily from a normal key, or

  a master key, or a group key.

  Thus, whoever finds a key does not know what type it is and, even when the key is lost, a change has already been made with a

  good organization of the lock cylinder and a new

  The correct key for the modified drilling pattern has been planned. This also plays in a sense of security against unauthorized copying of a key for example

later "found".

  When placing a normal key, the lock

  the narrow side of key 30, located in the plane of

  rusting 37, moves in the direction-of-application

  tion of the spring force, in a position where the second shear line SL2 is no longer locked, that is to say between the coding elements C23 and C24 and simultaneously changes the position of the latch 30 in the plane of lock 36 ', according to the Figure; this produces a displacement, in opposition to the force

  spring, until the second line of shears

  SL2 is unlocked, which allows a free rotation, for the opening of the lock cylinder, the rotor core 22 and the first rotor sleeve 23. Again it should be noted that for the drilling pattern

  of a normal key, all the rows of locks

  would intervene. A group key or a master key would have in accordance with the Figure shown a drilling pattern that would allow the locking latch 30 of the locking plane 36 'to be in the indicated position, but in

  In this case, the latch of the locking plane 37 would be de-

  placed with a penetration movement in a keyhole, until the third shear line SL3 between the second rotor sleeve 24 and the stator 18 -9-

  be completely released. Thus, during the free rotation

  resulting from this, the rotor core 22, the first man-

  chon 23 and the second sleeve 24 of the rotor, which are

  if they were locked together, they would be simultaneously turned from the angle causing the opening of the lock cylinder. When it is desired to effect a change of closure code by means of the change key, the coding element C50 of the multi-element lock 30 is brought into the locking plane 37 by the displacement described above, and establishes a "new" lock, which makes it possible to render ineffective all the keys concerned which act on this lock. With such a key, at least for this lock, all the coding elements are in incorrect positions, and thus lock the

  shear lines; free rotation for the opening

  lock cylinder is made completely impossible.

  sible. In this respect, we must also consider the fact

  that in a cylinder lock, several elements of ver-

  rou located in axially aligned plane with respect to the main cylinder axis, ie radial planes

  can simultaneously participate in this program.

  cess. Normally, five lock positions are established

  lage; with such an arrangement, it is possible to provide five blind holes 50 each comprising one or more coding elements C50. This locking position can further

  up to five radial locking planes

  each carrying a latch, a latch for the narrow side of the key, and respectively two latches at 90 and 45. The blind hole must be placed, because of the movement of the coding element, in one of the locking planes, so as to coincide with the locking hole of this lock in

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  a radial direction; in Figure, this corresponds to the locking plane 37. As indicated, in the case of five

  change holes each associated with an element: coding

  age, it is possible to have 32 different changes,

  that the lock cylinder must finally be replaced. In reality, there is more, because after the 32nd change, and taking into account the safety aspect, we can again use one of the previous settings, for example the first setting. It must be pointed out again

  extraordinary flexibility of the solution in accordance with

  the fact that the change is not naturally

  limited to locking plane 37; it can indeed

  be in any other plane.

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Claims (4)

R E V E N D I C A T IONS   1.- Lock cylinder with rotor and stator, having radial holes in the rotor and the rotor   stator and coming into alignment in a position of   the lock cylinder, as well as the locking pins.   rusting mounted with possibility of moving in   said holes, characterized by at least one line of   additional sanding (SL2), formed by the rotor (22)   and by a rotor sleeve (23) which is arranged centrally   around the rotor (22) and which has radial locking holes (30 ', 30 ") and that   encoding (Cx), not rigidly connected to the greening pins   rust (33), are provided in the extension of said locking pins.   2. Lock cylinder according to claim 1, characterized in that the rotor sleeve (23) comprises an additional radial hole (50) intended to receive at least a coding disk (C50).   3. Lock cylinder according to one of the   1 and 2, characterized in that the rotor (22)   a cylinder-shaped recess (45) is formed, and in that the rotor sleeve (23) has a locking pin (41) directed radially towards its center, the rotor (22) and the rotor sleeve (23). being arranged relative to one another so that the locking pin   (41) enters the recess (45).   4.- Lock cylinder according to one of the   1 to 3, characterized in that, to form a third shear line (SL3), there is provided a second rotor sleeve (24) having radial holes   (30 ', 30 ") and arranged on the first   rotor chon (23), concentrically with it and rotor (22).