LU87435A1 - IMPROVEMENTS TO MAGNETIC LOCKING TO BE INSERTED INTO AUTOMATIC LOCKING MECHANISMS - Google Patents

Description

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8'1 ^ 1 * 1 K GRAND-DUCHY OF LUXEMBOURG

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Minister of 19 ...... January 1999. of Economy and Middle Classes i-j-i ·, Service of Intellectual Property

liter of dehvré ------ | |||) LUXEMBOURG

Invention Patent Application -------------------------------------------- ---------------------------------------------------------- --------------------------------------- ^ ---------- ---------------------------------------------------------- - (1) I. Application

Elzett-Corta Z ^^^ alat, (2)

Berec2kl u.18-28, H-3980 SAtoralj & ihaly, represented by Monsieur Jean Waxweiler, 55 rue des Bruyères, Howaïd, acting ^ '"' quiTli ti" "'de ÎôaEââtairë ~" ........... ......................... ^ deposit) this nineteen Aanviar rail nine hundred: ~ uatra-vinqt-neuf __________ (4) at §xQ ..Q .______ hours, at the Ministry of the Economy and the Middle Classes, in Luxembourg: 1. this request for obtaining a patent for an invention concerning:. „.

Improvements to a magnetic lock to be inserted in ...... ôtécanisines à ...................... \> 2. description in language .. .....French"".......................................... ............... of the invention in triplicate; 3. .............. 3 ................................. ................. drawing boards, in triplicate; 4. the receipt of taxes paid to the Luxembourg Registration Office, * lp..PP. ..................; 5. the delegation of power, dated ......................................... .................................................. ................ the ................................. .................................................. ...............; 6. the successor document (authorization); declare (s) assuming responsibility for this declaration, that the inventor (s) is (are): (6)

Tibor ...... Kasaza, ....... KArpAt ...... u ......... 44, ....... VI / 30., ... .... H-1133 Budapest .......................................... .........................

claims (s) for the above patent application the priority of one (s) request (s) of (7) ........................ .feKSXSdfe ................................................ .................................................. ...... filed in (8). Hungary................................................. ....................

on (9) ....... 20 ....... January ...... 1233______________________________________________________________________________________________________________________________________________________________________________________________________ under N ° (10) ................ .................................................. .............................. „_____________________________________________________________________________________________________________ on behalf of (U) Elaatt-Certa ZàEgÿ * rtô, Pr ^ mto ùs SserssMiôssito YAllalat elects (elects) domicile for him / her and, if designated, for his / her agent, in Luxembourg_________________________________________________________ .55 ...... rue ...... des ...... Bruyères, Howald___________________________________________________________________________________________________________________________ (12) request) the issuance of a patent for the subject described and represented in the abovementioned appendices, with deferment of this dehvnuide to _______ _____jfcl___________________________________________________________________________________________________________________month. (13)

The $ i $ 88it / agent: ________________________________________________________________________________________________ _____________________________________________ (14) Π. Deposit Minutes

The aforementioned patent application for MGIQQQ. Was filed with the Ministry of the Economy and the Middle Classes, Service of Intellectual Property "i ^ e% 'feuife ^ pnrg, dated: 19.01.19 89 V \ i. 'va · \ „15.00 I £ à J Pr. the Minister of Economy and the Middle Classes, at ...............-........ ............. hours Û fl pd · Y®. j · $ / The head of the intellectual property department, A 68007 -----— ^ - EXPLANATIONS RELATING TO THE DEPOSIT FORM.

jrjr \ .1 (1) if applicable "Application for certificate of addition to the main patent, to main patent application No ............ of ...... ...... ”- (2) enter the surname, first name, profession.

address of the applicant, when the applicant is an individual or corporate name, legal form, address of the head office, when the applicant is a legal person- (3) enter the surname, first name, address of the professional representative, industrial property attorney , with special powers, if applicable: "represented by .......... acting as agent" - (4) date of filing in full - (5) title of the invention - (6) enter the names, surnames, addresses of the inventors or the indication "(see) separate designation (will follow)", when the designation is made or will be done in a separate document. or the indication "does not not mention ”, when the inventor signs or signs a non-mention document To be attached to a separate designation present or fiiture- (7) patent, cenificatd'addition. utility model, patent euroDéenrCBEl.DiDtectionintemationalefPrTl-fâ) State in the water the first deposit has been made ",

CLAIM OF PRIORITY

Filing of the patent application in Hungary January 20, 1988 UNDER number 204/88

DESCRIPTIVE MEMORY FILED IN SUPPORT OF A PATENT INVENTION APPLICATION IN THE GRAND DUCHY OF LUXEMBOURG

Elzett-Certa Zàrgyàrtô, Présôntô es Szerszàmkészitô Vàllalat

Bereczki u. 18-28 H-3980 Sàtoraljaùjhely

Improvements to a 'magnetic lock to be inserted in automatic locking mechanisms r j ·

Improvements to a magnetic lock to be inserted in automatic locking mechanisms

The present invention relates to an improved magnetic locking device to be inserted into automatic locking mechanisms comprising at least one locking cylinder placed in a standardized body "rotatably mounted and integral" said locking cylinder being coupled to the support of the locking mechanism lock automatic containing the magnetic locking insert, in which the locking cylinder contains a centralized notch for the key receiving a key containing discs with permanent magnets, i.e. magnets magnetized rectilinearly or diametrically at a given angular pitch with a North-South polarization and said key notch being surrounded on each side by a socket; rotors, the number and axis of rotation of which correspond to the magnets of the key inserted in the notch, are inserted into the rotor supports completing the locking cylinder in a cylindrical shape, and a rotor magnet is fixed in each rotor, magnetized identically to the key magnet, and on the side of the rotor extending opposite the rotor magnet are formed one or more indentations which form a continuous latch notch when the rotors have have been turned to the open position under the effect of the inserted key; in the rotor supports are formed an opening corresponding to the notch of the latch and, in the internal wall of the body, a latch groove corresponding to said opening, in which -in the basic position of the locking insert of the cylinder lock - a locking element is arranged in a guided and movable manner, and in addition a spherical device loaded by spring is provided to determine the relative position of the locking insert of the cylinder lock with respect to the body, fixing the inserted key - which is not in its basic position - in the notch of the key and preventing the drilling of the locking insert of the cylinder lock,

The improved magnetic lock to be inserted for the cylinder senure which is proposed here can be advantageously used for services requiring increased protection, and in the first place for door and gate locking mechanisms, either as a new construction element. , or to replace inserts with older magnets of cylinder locks.

Due to the increased number of variants and greater security, the magnet inserts of cylinder locks have eliminated the use of traditional Inserts of cylinder locks and have been used in a larger and larger circle. . DE-FS 3343581 describes a magnetic locking insert for locking mechanisms, as described in our preamble, details of which - which are also important from point 2 of the locking insert of the invention - will be presented with the help of Figures 1 to 7.

In a body 1 of standardized size is located a locking cylinder 2 which can be rotated from its static position shown in Figure 2, by means of its own key 3, to an open position illustrated in Figure 4. If the locking cylinder 2 is then further turned, the lock support which is connected to it moves the latch of the locking mechanism, thus allowing the opening of the locking mechanism. From its basic position, the locking cylinder 2 can only rotate with its own key 3. In the sockets of the body of the key 3, the number of which is generally three and of circular section, three magnet disks permanent are embedded on both sides of the key 3. On these magnet discs are composed of different magnetic codes.

The code is such that in the round magnet disc, that is to say in the magnets 12 of the key, a magnetic field with north-south dipole is formed which is divided in two by a neutral line, as is see in Figure 6. In the angular range of 360 ° traversed by the neutral line - starting from 0 ° - in an angular step characteristic of a given system, consequently with respect to 0 °, dipole magnetic fields with pole north-south, displaced by different angular steps, can be formed according to the number of desired variations. The angular step of 60 ° assuring the best resolution according to the prior art, dipole magnetic fields of six types can be generated. Embedded in the same key, the six kinds of magnetic field allow a possibility of 6® = 46,656.

On both sides of the key 3, inside the locking cylinder 2, in the supports 2 of the rotors, three rotors 6 are placed on each side, which contain the round magnetic disks - further the rotor magnets 5 - said magnets rotor 5 being made of the same material as the magnetic disks in the key 3, that is to say that the magnets 12 of the key, and being magnetized therein identically. The rotors 6 are embedded so that they can be rotated with the help of their shafts 7 and they also rotate under the effect of a lower moment. On the reverse side of the rotors 6 rectilinearly is formed an indentation having the transverse profile of a truncated cone which serves to receive the latching element of the locking cylinder 2. After placing the correct key 3 in the notch 10 of the key of the locking cylinder 2, the fields of the dipole magnets of the magnets 12 of the key affect the fields of the dipole magnets of the magnets 5 of the rotors fixed in the rotors 6 through of the wall of the notch 10 of the key and, due to the torsional force resulting from the interactions created, the rotors rotate in the open position in accordance with the codes of the key 3. The indentations on the reverse of the rotors 6 then form a notch 11 in continuous alignment for the latch. Under the effect of the torque transmitted by the key 3 to the locking cylinder 2, the latter attempts to rotate and the latching element - which in this case takes the form of a latch 8 - comes to bear against the wall of the groove 9 of the latch of the body 1 in its basic position under the effect of the springs 13, as is evident when looking at FIG. 3, and while rolling along the cinched wall of the groove 9 of the notch, and guided and moved in the opening 18 of the rotors 6, it sinks with its other end into the notch 11 of the latch, and consequently the locking cyclinder 2 can rotate in the body 1 according to the position shown in Figure 4. In the event that, during 3 courses of opening, a foreign body or an improperly coded key are introduced, the notches 11 of the latch of the rotors 6 remain in an undirected position during the interaction between the fields of the magnets dipoles of the magnets 5 of the rotors, or, under the effect of the magnets 12 of the foreign key , they are placed in an "improper coding" position and therefore do not receive the latches 8 which bear against the back of the rotors 6 and the wall of the groove 9 of the latch and, consequently, part of the latch 8 remains in the groove 9 in the locked position and the cylinder 2 cannot rotate in the body 1, not even with a significant torsional force.

The partial section of Figure 3 illustrates the state in which the correct key 3 is inserted in the notch 10; also, as a result of the correct coding of the magnets 12 of the key, the magnets 5 of the rotors do they rotate in the right direction and form a continuous notch 11 for the latch. However, the notch 8 still presses against the wall of the groove 9 of the latch under the action of the springs 13, which thus corresponds to the initial position according to Figure 2.

As we speak of an assembly containing several movable elements in a small volume, the proper and reliable operation of which considerably influences the applicability of an assembly, the insert of the cylinder lock presented here contains the packing rings 14 and 15 to prevent external contamination, and moreover, to come from a drilling in order to reach the latch 8, a spherical spring loaded accessory with a steel latch is inserted in the bore 16, which is capable of preventing that the key 3 is extracted from its basic position and which fixes the open position relative to that of closing the locking mechanism.

To prevent axial extraction, which is usual in drilling, grooves 17 are formed in the latches 8. In the case where, on the reverse side of the rotors 6, two notches 11 for the latch are produced instead of one (this possibility is illustrated with a dotted line in Figure 6), the rotor 6 will occupy a position at the insertion of two keys 3 differently coded, in which one of the notches 11 can receive the latch 8, and therefore we can obtain locking mechanisms with main keys and partial passers.

Magnetic locking inserts play an important role in the fight against burglary. These types of locking mechanisms cannot be opened by means of special break-in tools, because by providing for the manufacture of accessories of appropriate thickness, the locks resist even the harshest break-in methods. However, after a certain period of use, the magnetic insert of the cylinder lock contains impurities, seizes up and the opening becomes more and more difficult. This reduces the confidence placed in the inserts of cylinder locks. Although submerging and cleaning with solvent at regular intervals may provide a solution to this problem, however, not everyone is able to undertake regular disassembly and washing of the cylinder lock insert. Impurities can have several causes: external impurities result from the fact that tiny particles which, entering the assembly from the environment and are partially collected by the magnets, settle over time and prevent the exact embedding of rotors 6 and, thus, the flawless operation of the assembly. The packing rings 14, 15 usually 4 made of rubber, synthetic or silicone material considerably eliminate external impurities; simultaneously, the centro-axial embedding of the locking cylinder 2 reduces the frictional abrasion of the cylinder 2 and of the wall of the body 1.

Internal impurities occur as a result of frequent use in the sense that particles of material flaking off from surfaces subject to friction during operation also settle over time and prevent exact embedding and operation flawless rotors 6. In addition to impurities, another problem is related to the consumption of lubricant which considerably increases the coefficient of friction, the friction surfaces become rougher, seize up and the blocking of the lock locking insert to cylinder occurs

The sliding friction is considerable at the rounded rear end of the latch 8 and on the sides in contact with the openings 18 of the support 4 of the rotors, and additionally in the notches 11 of the latch of the rotors 6.

The reduction in sliding friction and lubrication of the locking mechanism can be solved exclusively by using petroleum, as confirmed by practice, said petroleum being quite suitable for washing and lubricating the assembly by virtue of its composition. In general, when other lubricants are used, because of the thickening, the rotors 6 are braked and cannot come to be placed in the appropriate opening positions. With traditional cylinder lock inserts, it was customary to apply graphite to teduce sliding friction. Due to the high sliding friction, with the magnetic locking inserts of cylinder locks, the application of sprayed graphite is not at all effective, since it agglutinates with particles of other materials which are flaked off during friction with the rotors 6 by braking them; therefore, proper embedding of $ rotors 6 in the open position can be hindered.

During the manufacture of the locking mechanisms, it is of the utmost importance that the intensity of the magnets 12 of the key and the magnets 5 of the rotors, the accuracy of the magnetization and the torsional forces produced by the magnetic fields their effect on elements involved in the closure in a manner that is not obstructed.

In the course of practical application, it has been realized that the torsional force produced by the interaction between the magnets 12 of the key and the magnets 5 of the rotors decreases proportionally with the square of their mutual distance in the case where the volume is filled with a zinc-based alloy and decreases in cubic proportion if the volume is filled with air. Therefore, to be able to achieve the greatest possible torsional force, the distance between the key magnets and the rotor magnets must be kept to a minimum. The characteristic embodiment of the locking inserts of cylinder locks of the prior art - as shown in Figure 7 - has key magnets 12 fixed in the die 3; also, in the key 3 of the locking insert of the cylinder lock according to Figure 1, six magnets 12 are arranged in the key. In this way, it becomes possible that six magnets 12 of the key 3 can rotate six rotor magnets 5 simultaneously in the coded open position. As already shown, in practice, with an angular step circle of 60 °, six kinds of dipole magnetic fields are generated, and therefore 66 = 46,656 possibilities can be obtained.

With the majority of the usual magnetization methods to date, the accuracy of the magnetization does not allow a considerable increase in the angular step of 60 °, since the accuracy of the embedding of the rotors 6 would not be satisfactory. With cylinder locks based on the pivot system and used in a large circle, 35,000 variants are considered sufficient in practice. This number of variants is carried out so that, insofar as the six pivots are varied in five different sizes, the variant of 56 * 15 625 can be produced, and other possibilities are obtained by changing the shape of the key. the appropriate number of variants of the magnetic locking insert for cylinder locks, two key magnets 12 must be individually inserted into each of the key sockets 3. This solution has the advantage that a large number of variants can be produced with relatively few, and more precisely six, kinds of rotors. However, this simplicity is accompanied by the following drawbacks.

The magnets 12 of the key must be extremely thin to avoid excessive thickness of the key 3, because, at the same time as the thickness increases, the thickness of the walls of the material located between the magnets 12 of the key and the magnets 5 of the rotors must also be increased, In a notch 10 of relatively large key, a fairly strong torsional force can be exerted by using a foreign body, while small wall thicknesses are unable to resist the large pressure sent to the back of the rotors 6 by the latch 8, and the locking cylinder 2 rotates. To avoid interactions between the thin magnets 12 of the key, these may not be completely magnetized, and only lines of magnetic force in an approximate shape of a U must be generated inside the magnets 12 of the key. In this way, total magnetic saturation cannot be achieved and, consequently, the weaker magnets 12 of the key will remain available, as if we applied parallel linear magnetization as is usual with the magnets 5 of rotors,

Because the key 3 is relatively thick, the wall between the magnets 12 of the key and the rotor magnets 5 will also be relatively thick and therefore the torsional forces reacting with each other will be considerably reduced ,

By removing the key 3, only the interaction between the magnets 12 of the key and the magnets 5 of the rotors, and after having carried out the extraction, the interaction between the magnets 5 of the rotors allow the rotors 6 then to be placed in a disordered position differing from the coded position allowing opening. Due to the considerable thickness of the walls, these effects are weakened and, consequently, for example as a result of impurities in the rotors 6, a disordered position cannot be obtained, even after having removed the key 3, thus putting in danger the security of the closure.

With the known magnetic locking entries of cylinder locks, two independently functioning magnetic circles are formed, indicated by the dashed lines 20 of magnetic force in Figure 7. However, in practice there is an interaction between the lines of magnetic force and, by deforming this mutual interaction, the precise embedding of the rotors 6 is made difficult.

6

The aim of our invention is to eliminate the shortcomings of the known inserts of cylinder locks and to develop a magnetic insert for cylinder locks which has a long service life, with reliable operation and requiring no maintenance, which can be produced economically with simple means, with a large number of variants.

Our invention is based on the recognition that the access of impurities representing the main cause of uncertain functioning must be prevented, so that the magnetic insert of the cylinder lock can operate with high reliability, the lubricant having been applied in progress. production, and requiring no other maintenance; another object resides in obtaining a better angular pitch by magnetizing the magnets of the key throughout their thickness by comparison with an angular pitch of 60 ° currently applied, so that with fewer key magnets, one can however obtain, with a larger number of codes, an identical number of variants, or better still a number of variants exceeding the current number.

In the course of solving the fixed task, we started from a cylinder locking mechanism insert which comprises at least one locking cylinder arranged in a standardized body and mounted to rotate and integral, said locking cylinder being coupled to the support of latch of the automatic locking mechanism containing the magnetic locking insert of the lock, in which the locking cylinder contains a central notch for the key receiving a key containing discs with permanent magnets, i.e. magnetized magnets rectilinearly or diametrically according to a given angular pitch with a North-South polarization and said key notch being surrounded on each side by a socket; in the rotor supports completing the locking cylinder in a cylindrical shape, rotors are inserted whose number and axis of rotation correspond to the magnets of the key inserted in the notch, and in each rotor is a rotor magnet, magnetized identically to the magnet, and on the side of the wm extending opposite the rotor magnet are formed one or more indentations which form a continuous latch notch when the rotor magnets have been turned to the open position under the effect of the inserted key; in the rotor supports are formed an opening corresponding to the notch of the latch and, in the internal wall of the body, a latch groove corresponding to said opening, in which - in the basic position of the locking insert - a latching element is arranged in a guided and movable manner, and in addition a spherical device in spring loaded steel is provided for determining the relative position of the locking insert relative to the body, fixing the inserted key - which is not in its basic position - in the key notch and obstructing the drilling of the locking insert of the locking mechanism.

In accordance with the invention, this locking insert is produced in such a way that, to prevent impurities occurring during use of the insert of the cylinder lock, and introduced from the outside as a result of internal friction , and to ensure precise rotation of the rotors in the open position, the latching element is in contact with the wall of the latch groove at only one point, and that at least in a cross section of the opening it is mounted in a manner ensuring closure of the opening.

7

In order to increase the number of variants of the magnetic locking insert of the cylinder lock, and to increase the interaction between the key magnets and the rotor magnets, the thickness of the key magnets corresponds to l '' thickness of the key, the magnets of the key - which have been magnetized throughout their thickness at an angular pitch of 20 ° at most - being each surrounded by a rotor magnet magnetized similarly to the magnets of the key,

The embodiment of the magnetic locking insert of the cylinder lock is considered to be advantageous, since the latching element is composed of a latch extending in the opening of the rotor support and inserting in the latch notches of the rotors and an intermediate element coupling the rear of the latch and the rear wall of the groove of the latch. The intermediate element can be easily adapted to the shape of the opening of the rotor support, and consequently the impurities will not be able to enter neither inside the rotor support nor in the area of the notch of the latch. ,

In the above-mentioned case, it is considered advantageous for the intermediate element to be a metal ball adapting to the diameter of the opening with a circular cross section in a closed but mobile manner; in a simpler case, it may consist of a barrel-shaped roller or a cylindrical roller meeting general specifications.

The embodiment is also considered to be advantageous when the magnets of the key and the magnets of the rotors are magnetized with an angular pitch of 11 °, because in this case, in addition to an appropriate mechanical force, a large number of variants can be produced.

With the improved locking insert of the cylinder lock according to the invention, by changing the latching member, wear due to sliding friction and blockage resulting from lack of lubrication could be eliminated. In practice, no flaking of particles of material from surfaces usually subjected to friction occurs, and as a result, functional failures due to improper embedding of the rotors and inapplicability cease. Thanks to the closed form, failures due to external impurities can be completely eliminated.

As a consequence of reduced friction, the need for lubrication will be reduced, so that with closed embodiments of the inserts of the cylinder locks, it is sufficient to apply one time of the lubricant, during manufacture, then that with the open embodiments, the maintenance and lubrication required are considerably reduced.

Thanks to a stronger magnetic field, a more robust and reliable cylinder lock insert can be produced without reducing the number of variants below the internationally accepted level.

The invention will now be described in detail by means of a few preferred embodiments, with reference to the accompanying drawings, in which: Figure 1 is a longitudinal section of a detail of the magnetic insert of the lock cylinder belonging to the prior art, Figure 2 is a cross-sectional view of the cylinder lock insert taken along the line IHI of Figure 1, in the basic position, with the key inserted, c * ~ 8 Figure 3 is a cross section along line III-III of Figure 1, Figure 4 is a cross section of the locking insert taken according to league IV-1V of Figure 1, the locking insert being turned in the open position, Figure 5 is an enlarged sectional view of a rotor of the locking insert of the cylinder lock according to Figure 1, Figure 6 is the front view of the rotor according to Figure 5 , Figure 7 is an enlarged central detail of the locking insert of the cylinder lock according to Figure 2, with the magnetic circles, Figure 8 is the longitudinal sectional view of a possible embodiment of the magnetic locking insert of the cylinder lock according to the invention, Figure 9 is the cross section of the insert according to Figure 8 taken along line IX-1X with the locking cylinder in the basic position, Figure 10 is a sectional view of the locking insert of the cylinder lock taken along line XX of Figure 8, Figure 11 is the cross section of the locking insert taken along line XI-XI of Figure 8 with the locking cylinder turned in the open position, Figure 12 shows some possible embodiments of the latch, Figure 13 is a section taken along the line XIII-XIH of Figure 12, Figure 14 is a section taken along the line XIV-XIV of Figure 12, Figure 15 is a section taken along the line XV -XV of Figure 12, Figure 16 illustrates the magnetisati the magnets of the rotors and the magnets of the key of the locking insert of the cylinder lock according to the invention are coded, FIG. 17 represents the zone of the latch and of the rotor occupying the worst case of the closed position of a mechanically, Figure 18 is the side view of the rotor and latch according to Figure 17, Figure 19 is a cross-sectional view taken along the line X1X-X1X of Figure 8 with the locking cylinder in its position basic, and Figure 20 shows the enlarged central detail of the locking insert of the cylinder lock according to Figure 19 with the lines of magnetic force.

The configuration and the functioning of the magnetic insert of the cylinder lock, as well as the drawbacks which result from it * represented last year - have already been described in our preamble, so we will not talk about it here.

Figure 8 shows the longitudinal sectional view of a detail of the magnetic locking insert of the cylinder lock according to the invention. From the comparison of Figure 8 with Figure 1, the difference in configuration of the li ^ uclugc element becomes evident. In the section of Figure 9, it can be seen very clearly that, instead of a simple latch 8, a latching element is used, which consists of the latch 8 sinking into the latch notches 11 after the cylinder 2 for locking has been turned, as well as in the intermediate element 8a coupling the latch 8 and the groove 9 of the body 1 intended for the latch.

As seen in Figures 9 to 11, this intermediate element is a steel ball which 9 adapts diametrically and closes the opening 18 of the support 4 of the rotors so that it can move there while Isolating the inside the support 4 of the rotors of the outside world.

From the partial section view of FIG. 10, it can very well be seen that the basic position of the latch 8 - in a similar manner to the solutions described above - is ensured by the springs 13, at the same time as the latch 8 has been thinned so that the intermediate element 8a can be inserted between the latch 8 and the wall of the groove 9 for the latch without it ever blocking.

A precise arrangement of the latch 8 and of the intermediate element 8a is made possible by the sockets on the rear face of the latch 8 which adjust to the shape of the intermediate element 8a. In Figure 11, we can see that while we turn the locking cylinder 2, the intermediate elements 8a - in our case steel balls - roll down the wall of the groove 9 for the latch and s '' push unhindered into the opening 18 of the support 4 of the rotors, which means that - in the case of turning with the correct key 3 - the latch 8 sinks into the notch 11 of the latch,

In Figure 12, we present three examples of different configurations of the intermediate element 8a: in the socket 19 of the latch 8 on the left side is inserted a steel ball, a barrel-shaped roller is inserted in the central socket 19, and a cylindrical roller meeting general specifications is inserted into socket 19 on the right side. In Figure 13, we see a cross section of the latch 8 in contact with the intermediate element 8a - the ball -, while in Figure 14 is illustrated the cross section of the latch 8 in contact with the intermediate element in the form of barrel 8a. In Figure 15, there is shown an embodiment of the proposed insert of the cylinder lock - and more precisely two components thereof - in which the latch 8 is not in contact with two, three or four intermediate elements 8a, in which case the number of openings 18 in the support 4 of the rotors corresponds to the number of intermediate elements 8a, but the intermediate element 8a is formed by a simple rolling needle of the same length as that of the latch 8 , which is inserted in the opening 18 of the support 4 of the rotors, the size of which corresponds to the size of the rolling needle, On the rolling needle which - when it is pressed into the socket 19 of the latch 8 -is unable to move in the longitudinal direction relative to the latch 8, there are two recesses 17 whose task is to prevent tearing by force of the intermediate element 8a and the latch 8 therewith.

Figures 16a to 16c illustrate the coded magnetization of the magnets 5 of the rotors and the magnets 12 of the key. We can see in Figure 16a that after being magnetized each rotor magnet 5 and each magnet 12 of the die contains dipolar magnetic fields with north-south polarization, where the position and direction of the line of separation of the north pole and the south pole, respectively, indicates the angular step of magnetization.

In Figure 16a, we arbitrarily took the vertical limit 0e, the angular step of 60 ° having been applied to the magnets of the cylinder lock belonging to the prior art being indicated by dotted lines. In contrast, by applying a much lower angular pitch - for example 1 Ie - to the magnets 5 of the rotors and to the magnets 12 of the die according to the invention (cf. FIGS. 10 16b 16c), the number of possible codes could be multiplied by three.

The application of an angular pitch of less than 1 Ie - apart from the extremely precise specifications which the magnetization means must obey - is not considered appropriate, because in the case of the use of a foreign object or a foreign key, the common support area of the rear of the rotors 6 not turning in the open position only due to the use of foreign objects, as well as the latch 8 pressed at this location, will be reduced in such a way so that the deformation of the latch 8 or of the rotor 6 can occur, leading at least to the defect that the deformed components allow the latch 8 to jump into the notch 11 which has turned slightly under the force exerted. In the most disadvantageous case, as seen in Figure 17, representing the worst case, the compressive force of the surfaces of the rotor 6 and the latch 8 in contact with each other is able to compensate without any deformation the load produced by the torsional force of the foreign body or the foreign key inserted in the notch 10 for the key.

With the embodiment illustrated in Figure 19, the cross section of the locking insert of the cylinder lock according to Figure 8 has been changed in the sense that three key magnets 12 are embedded in the die 3 instead of three times two 12 die magnets; however, they have not received U-shaped magnetization as before, but they are magnetized over their entire thickness, in the same way as the magnets 5 of the rotors. A single continuous magnetic circle will then be formed, as seen in Figure 20, which is closed on the key magnet 12 and the magnets of the rotors 5 enclosing it on both sides. As can be seen, the thickness of the key 3 and simultaneously the thickness of the notch 10 receiving the key is much smaller than in the case of the traditional cylinder lock locking insert according to FIG. 6, so that with a stronger mechanical construction, a smaller wall thickness can be produced on both sides of the notch 10 intended for the key. In this way, it can be partially prevented that a coarse and resistant foreign body can be pushed or pushed into the notch 10 of the die. For the reasons described above, the formation of a stronger magnetic field can be achieved by improving the precision of closing and opening, while increasing safety.

If, during magnetization, we apply an angular step of 11 ° to the magnets 5 of the rotors and to the magnets 12 of the key, the magnets 5 of the rotors having been coded in 33 different ways in three dice embolisms, 33 ^ * * 35 937 variants can be obtained.

By changing the shape of the notch intended for the die according to the die, on the basis of all that has been said, more than 150,000 different variants can be obtained, meeting all the criteria.

Claims (8)

1. Improved magnetic locking insert for cylinder target mechanisms which comprises at least one locking cylinder arranged in a standardized body and mounted to rotate and integral, said locking cylinder being coupled to the locking support of the automatic locking mechanism containing the '' magnetic locking insert of the lock, in which the locking cylinder contains a central notch for the key receiving a key containing discs with permanent magnets, i.e. magnets magnetized linearly or dia-metrically according to a pitch angular given with a North-South polarization and said key notch being surrounded on each side by a socket; in the rotor supports completing the locking cylinder in a cylindrical shape, rotors are inserted whose number and axis of rotation correspond to the magnets of the key inserted in the notch, and in each rotor is a rotor magnet, magnetized identically to the key magnet, and on the side of the rotors extending opposite the rotor magnet are formed one or more indentations which form a continuous latch notch when the rotor magnets have been turned to the open position under the effect of the inserted key; in the rotor supports are formed an opening corresponding to the notch of the latch and, in the inner wall of the body, a latch groove corresponding to said opening, in which - in the basic position of the locking insert - a latching element is arranged in a guided and movable manner, and in addition a spherical device in spring loaded steel is provided for determining the relative position of the locking insert relative to the body, fixing the inserted key - which is not in its basic position - in the key notch and obstructing the drilling of the locking insert of the locking mechanism, CHARACTERIZED IN THAT to prevent the penetration of external contamination and impurities resulting from internal friction during the use of the locking insert of the cylinder lock, and to ensure the precise rotation of the rotor housings in the open position, the latching element is in contact with with the wall of the groove (9) of the latch non-continuously on its cross section and in that in at least one cross section of the opening (18) it is mounted in a manner closing the opening (18) thanks to its shape, 2. cylinder lock locking insert according to claim 1, CHARACTERIZED IN THAT the latching element is composed of a latch (8) extending in the opening (18) of the support (4) of the rotors and fitting into the latch notches (11) of the rotors (6) and of the intermediate element (8a) coupling the rear of the latch (8) and the wall of the groove (9) of the latch. 3. cylinder lock locking insert according to claim 2, CHARACTERIZED IN THAT the intermediate element (8a) is a steel ball matching the diameter of the opening (18) with a circular cross section so as to close while being freely movable. 4. Cylinder lock locking insert according to claim 2, CHARACTERIZED IN THAT the intermediate element (8a) is a roller in the form of a billet conforming to the diameter of the opening (18) so as to close while being freely movable. ‘12 5. Lock insert, it houses a cylinder lock according to claim 2, CHARACTERIZED IN THAT the intermediate element (8a) is a cylindrical roller conforming to the diameter of the opening (18) so as to close while being freely movable. . 6. Cylinder lock locking insert according to claim 2, CHARACTERIZED IN THAT the intermediate element (8a) is a rolling needle conforming to the diameter of the opening (18) so as to close while being freely displaceable, and the length of which is approximately the same as that of the latch (8). 7. Cylinder lock lnsert according to any one of claims 1 to 6, CHARACTERIZED IN THAT the intermediate element (8a) extends in one or more tm-housings (19) formed in the latch hole ( 8) and in that either on the intermediate element (8a) or on the latch (8) is formed a transverse groove (17) to prevent a force extraction of the intermediate element (8a) or the latch (8), 8 improved magnetic locking insert for cylinder lock mechanisms which comprises at least one locking cylinder arranged in a standardized body and rotatably mounted, said locking cylinder being coupled to the locking support of the automatic locking mechanism containing the insert. of the magnetic locking of the lock, in which the locking cylinder contains a central notch for the key receiving a key containing discs with permanent magnets, that is to say magnetized magnets rectiliné & Ürement or diametrically at a given angular pitch with a North-South polarization and said key notch being surrounded on each side by a socket; in the rotor supports completing the locking cylinder in a cylindrical shape, rotors are inserted whose number and rotation tax correspond to the magnets of the key inserted in the notch, and in each rotor is a rotor magnet , magnetized identically to the key magnet, and on the side of the rotors extending opposite the rotor magnet are formed one or more indentations which form a continuous latch notch when the rotor magnets have been turned in the open position under the effect of the inserted key; in the rotors supports are formed an opening corresponding to the notch of the latch and, in the internal wall of the body, a latch groove corresponding to said opening, in which - in the basic position of the locking insert - an element of the catch is arranged in a guided and movable manner, and in addition a spherical device in spring loaded steel is provided for determining the relative position of the locking insert with respect to the body, fixing the inserted key which is not in its position base - in the key notch and by obstructing the drilling of the locking mechanism Tinsert of the locking mechanism, CHARACTERIZED IN THAT to increase the number of Tinsert variants of the roller seed drill and to increase the magnetic interaction between the magnets (5) of the rotors and the magnets (12) of the key, the thickness of the magnets (12) of the key corresponds to the thickness of the key (3) and in that the magnets (12) of the key magnetized with a step angular of 20 ° maximum in their entire thickness are surrounded on both sides by the magnets (5) of the rotors identically magnetized. 9. Cylinder lock locking insert according to the claim 8 * CHARACTERIZED IN THAT the magnets (12) of the die and the magnets (5) of the rotors are magnetized with an angular step of 11 °.