LU82152A1 - MAGNETO-ELECTRONIC LOCKING SYSTEM - Google Patents

Description

L-2486

^ Λ GRAND-DUCHY OF LUXEMBOURG

Patent N ° £ | ........ tm f du ----------------- 1.1 .. * „Q2 .. *. 1.980 ..„ Mister Minister of the National Economy and the Middle Classes

Title issued: ........................................

Industrial Property Service

7 LUXEMBOURG

yy / fv Invention Patent Application //, 6 * · - · 'I. Request —ME -., Mar4ano .... Goroez.ÂQlea .... Naveda., ...... Vuelta .. de.l .... Cast-illo, ..... no ........ 3 .., ................. <i) _______ -52a- Pamplona. Spain, represented by .............................................. .................................................. .....

Jean Waxweiler, 21-25 Allée Scheffer, Luxembourg, acted m ....... in ............................. .................................................. .

* · - * __________________________............................................. .................................................. .................................................. ............

deposits _____ this eleventh of February one thousand nine hundred and eighty (3) at —1..5 ... 00 hours, at the Ministry of National Economy and the Middle Classes, in Luxembourg: 1. this request for obtaining '' a patent for an invention concerning: ___________________________________________________________________________ (4)

System of verroûïlïagë "iiâ ^ etô-ilëcïFônïi ^ el! ...................................... .

declares, assuming responsibility for this declaration, that the inventor (s) is (are): ......................... .................................................. .................................................. .................................................. .................................................. .................................................. (5)

Mr. Mariano Gomez-Olea Naveda, Vuelta del Castillo, no. 3, ........ 'γ5'2α -..... Pamplbnä7 ..... Spain ....................... .................................................. .................................................. ..............................................

2. the delegation of power, dated ______ P. ^ mplona _________________________ on _______________ 24 ..... j anyi.er ^ I9 8 (S. description in language ................. ........................... of the invention in two copies; 4.. € - drawing boards, in two copies; 5. the receipt of the taxes paid to the Luxembourg Registration Office on. — onz.e ..... fé.vr.ier ..... mi.l .... neuf ...... hundred ..... qua.tre-v.ing.t ._________________________________________________________________________________________ claims for the above patent application the priority of one (s) application (s) of (6) ---------- ----------------------- L -------------------------- ------------------------ filed in (7) _______________ L ._______________________________________________________________________________________ on -------------- ---------------------------------------------------------- ---------------------------------------------------------- --------- y .--------------------------------------- --------------------- ---------------------------------------------------------- ------------------- (8) in the name of _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ (9) elect domicile for him / her and, if designated, for their proxy, in Luxembourg ... .....................................

______Jean Waxweiler .21-25 Allée Schef fer .Luxembourg ....................................... ..................... (10) I request the grant of a patent for the subject described and represented in the abovementioned appendices, - with adjournment from this issue to ................... 6 .......................... month.

„The · authorized representative .......................... χ..71..4 · ... Η ^ ...... i ...........................

Π. Procès-verbal de Dépôt I The aforementioned patent application has been filed with the Ministry of National Economy and Middle Classes, Industrial Property Service in Luxembourg, dated: _J_L.02.1980

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f <£ '\ Pr. the Minister at 1.5, QQ hours (0 / X' \ V. he National Economy ^ iTdes-Classes Moyennes, I: J- f \% \ * r ^ {y \% \. there is A 68007 __ / / _ L- 2486 \

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

'' Mr. MARIANO GOMEZ-OLEA NAVEDA

MAGNETO-ELECTRONIC LOCKING SYSTEM.

Magneto-electronic locking system B

The present invention relates to a non-mechanical locking system. This invention relates more particularly to a magneto-electronic locking system used to electrically control a lock, ’The recent trend in the field of locks has been to devices which avoid the use of traditional mechanical keys and locks. Current devices have been designed to eliminate the use of a key to avoid the possibility of distorting the lock es 10 which has become a problem with locks actuated mechanically by a key.

The simplest of these devices uses an electrical signal to activate a relay capable of operating a lock. A more complicated device is triggered by a radio signal of a predetermined frequency which is detected by a tuned circuit and analyzed by a circuit actuating the latch. A device is also known in which a printed circuit board carries a key circuit and has a plurality of terminals distributed along an edge engaging in a socket connected to a> other circuit which opens the latch when it has recognized the key circuit carried by the printed circuit board.

These devices have several drawbacks. Using an expensive radio transmitter greatly increases the cost of the locking system. The same is true of using a complex calculator to read the circuit board. Transient or parasitic currents can saturate the coils of the radio system by induction. The card locking system can be blocked by obstructing the passage of the card ds so as to completely prevent its insertion or picking up by deciphering the key circuit door 30 by a card borrowed temporarily.

It has been proposed to simplify such devices and lower their cost by using a mechanical type key switch which controls a lock. In such a device an extremely sophisticated key is used with a very complex bit to minimize the possibilities of picking and the latch itself is normally placed in a place protected against break-in. Such a device has 1 ‘- 2 - however many of the disadvantages of mechanical type locks and electric type locks. It has the advantage of a relatively low cost, but it has not been proven that this single advantage is a sufficient factor to guarantee wide use of such a ser-5 rure.

>. An object of the invention is to obtain an improved locking system.

Another object of the invention is to obtain a system which is relatively inviolable and which can be produced at relatively low cost.

Another object of the invention is to provide a locking system with non-mechanical actuation.

Another object of the invention is to obtain a locking system in which the number of combinations available is very large.

These objectives are achieved, in accordance with the invention, with a magneto-electronic locking system having an elongated key having a plurality of permanent magnets spaced along the axis of the key with angular differences between their axes respective according to a predetermined magnetic arrangement. A cylinder defines a passage of shape complementary to that of the key and comprises a plurality of magnetic field detectors spaced 18 along the axis of the cylinder, with angular distances between their respective axes in an arrangement corresponding to the arrangement-25 magnetic key. Each detector changes state when it is juxtaposed with the magnet which corresponds to it and is connected to an electronic circuit which controls a lock. This circuit controls the opening of the lock only when all the detectors have changed state after having been faced with their respective magnets carried by the key.

The actuator of the magneto-electronic locking system according to the invention can be moved away from the mechanical lock itself. Thus its position will give no indication of the location of the lock itself. The latter can be with standard bolt or deadbolt or with multiple bolts like those used for safes. The electronic circuit may furthermore be provided with a time-delay blocking circuit which prevents the opening of the lock and can possibly set off an alarm each time a foreign element is introduced into the passage of the cylinder. or that the key was inserted in the wrong position "

This is in accordance with another characteristic of the invention which is the relative importance of the angular position of the key in, the passage for actuation of the locking system. Thus the key itself can be provided with a set of angular markers and the passage of an index so that the user has to place a particular angular mark opposite the index to obtain the actiorwe-10 of the lock. If this particular angular reference is not placed facing the index within a predetermined period after the insertion of the key in the passage, the lock will be blocked and an alarm possibly triggered.

It is possible to provide the magneto-electronic locking system so that the simple insertion of the key in the wrong position causes the opening of the lock. It is also possible, according to another characteristic of the invention, to provide the system so that it works with a predetermined numerical combination, in this case the key must be inserted in a predetermined position and turned into other angular positions according to a predetermined sequence. This can be done very easily by providing the key with a series of numbers identifying angular positions and by providing the cylinder with an index or vice versa. Normally, in such a case, there is a need for a number of magnetic detectors several times greater than that of the magnets of the key.

The electronic circuit which controls the locking system comprises a microprocessor which progresses step by step in a program each time the key is turned, within a predetermined period, from a good position to the next good position. If the key is not turned to the next correct position within the time allowed, the microprocessor is reset and the combination must be tried again. In addition, if after several unsuccessful attempts the lock is not opened, the microprocessor is programmed to stop the tests and, if desired, issue an alarm. Such an arrangement guarantees the inviolability of the locking system leads if the key or the combination falls into the wrong hands. A considerable advantage of the locking system according to the invention is that, due to its entirely electronic nature, it is capable of easily changing the combination. Such a locking system can be used for a safe.

According to the invention, the key can have a smooth shape 5 with uniform cross section so as not to be subjected to any substantial mechanical effort. The passage is normally open at both ends to avoid the possibility of blocking it with something. In addition, if the key and the passage are both cylindrical, one can use, as previously described, the different angular positions of the key for a combination with one or more digits.

According to the invention, the key itself is produced using a stack of discs wrapped in a non-magnetic sheath. Each of these discs has several peripheral notches. These permanent magnets are encased in these notches and the complete assembly is maintained by a non-magnetic outer sheath. Similarly, the cylinder is formed of a tube produced from a stack of rings having peripheral notches and a coating sheath. The detectors are fitted into the notches of the rings 20 in an arrangement corresponding to that of the magnets on the key.

Such a provision allows the user who so wishes, to assemble the basic elements of the locking system to establish the magnetic bit of his own key. It also allows a subsequent disassembly and a reconfiguration of the bit as desired. As already mentioned, one of the characteristics of this invention is to provide at least one detector in a location which is not close to a permanent magnet of the key when it is correctly inserted in the cylinder. This detector is connected to the microprocessor of the locking system so as to prevent the opening of the lock in the event that it detects a magnetic field. This detector will prevent the lock from opening in the event of an attempt to open without using the key, using a magnetic wax.

Other characteristics and advantages of the invention will emerge from the following description of embodiments given by way of examples. This description will be made with reference to the drawing in which; - Figure 1 is a perspective view of the elements of a locking system 1 * - 5 - according to the present invention, - Figure 2 is a sectional view of part of a locking system according to this invention , - Figure 3 shows a plurality of end views of different keys according to the present invention, - Figure 4 is a partially exploded perspective view of another key according to this invention, - Figure 5 is a view partially exploded perspective view of another key for a combination locking system according to this invention - and FIG. 6 is a diagram of a control circuit for the locking system according to this invention,

Figure 1 shows a non-mechanical key 10 having a barrel 11 and a handle 12, and a 3D cylinder having an outer sheath 31, an inner sheath 33, and a pair of parts 22 obstructing the ends of the sheaths together defining a cylindrical passage 34. This passage 34 is open at both ends. Its inside diameter is slightly larger than the outside diameter of the barrel 11,

A stack of rings 35 is housed between the walls 31-33. Each of these rings 35 has four angularly equidistant peripheral notches 35, all of which can receive a detector 37 or 37 '.

FIG. 2 shows that the key 10 has an outer sheath 13 filled with a stack of discs 14 each having one or more peripheral notches 16 capable of receiving a small permanent magnet 15. In addition, spacers 26 of axial length less than 14 discs can be used. The dimensions of the key are such that the end surface 18 of the barrel. 11 is flush with the ring 22 of the front end of the cylinder 20.

As shown in FIG. 2, each of the two permanent magnets 15 is aligned with a detector 37 of the Hall effect type. In addition there is at least one other detector 37 'placed in a location which is not normally aligned with a permanent magnet 15. Naturally, the spacing of both the magnets 15 and the detectors 37 can be varied both axially and angularly. and 37 ', Dss conductors 33 come from the various detectors 37 and 37'.

FIG. 3 shows how hexagonal discs 14a can be produced, each having six notches 16 on its periphery. The round disc 14b of FIG. 3 is substantially the same as that used in the production of FIGS. 1 and 2. It is also possible to use a square disc 14c having four notches 16 or a disc 14d with a can-5 T-turn having three notches 16. The discs 14a, 14c and 14d will be used in systems with keys which do not rotate.

Figure 4 shows an embodiment with a square section key provided with permanent magnets 25 stacked between narrow spacers 26 and wide 26A. In this embodiment, the espa-10 is not used between the angular positions of the magnets 25 but only the spacing between the axial positions of the latter. For all such implementations, the detectors will be mounted in a complementary alignment with at least one detector 37 'placed in a location which is not normally opposite a permanent magnet 15 when the key is fully inserted.

In the embodiment of FIG. 5, the end wall 18 includes marks 17 which are angularly equidistant and the discs with circular outline 14e are each provided with six notches 16, some of which contain a magnet 15. FIG. 5 also shows the wall 20 d rear end 19 of the key. The marks 17 can be aligned with an index drawn on the end wall 32 for use of the locking system with combination. The detectors 37 can simply be stuck in the notches 26 or glued in place. Alternatively, a grooved tube 35A can be used as shown in Figure 2 with the various detectors 37 and 27 'glued in place or coated in a suitable non-magnetic material. In all cases the walls between the detectors 37 and 37 'and the magnet 15 are made of a non-magnetic material, normally a synthetic resin in such a way that the magnetic fields of the magnets 15' 30 can reach through this structure to the effect detectors

Hall 37 and 37 '. A synthetic resin with an extremely low coefficient of friction, such as polytetrafluoroethylene, is perfectly suited to such an application,

FIG. 6 shows how the conductors 38 are all connected to a microprocessor 40 itself connected to a logic circuit 44 behaving as a switch between a source 42 of power supply voltage and an electromagnetic lock Door 46. This circuit 44 is controlled by a pulse emitted by the microprocessor 40 and applied via a resistor R2 and a diac D1, to a triac T1 connected in series with a coil CL1, the latch 46 and the source S power supply 42. The triac tripping voltage is determined by the capacitors C1 to C4 as well as by the resistors R1 to R3, the variable resistor R4 and the potentiometer P1. Thus the relatively weak impulse from the microprocessor 40 allows a relatively large current to pass through the electro-magnetic latch 46 through the triac T1. The electromagnetic lock 46 can also be actuated by emergency using the switch 48.

The microprocessor 40 can be programmed to produce a pulse which unlocks the triac T1 whenever all the detectors 37 detect a magnetic field while the detector 37 '15 does not detect one. When a key like the one shown in Figure 5 is used, the microprocessor can be programmed to deliver a pulse to the gate of the triac T1 only after receiving a plurality of different input signals in a predetermined sequence o1sst ie after the key shown in Figure 5 has been rotated by a predetermined series of angularly offset positions. The key shown in Figure 5 can then act as the movable member of a fully non-mechanical combination lock with the added security that the active member of the lock can be removed if desired.

Claims (12)

1. A magneto-electronic locking system characterized in that it comports; - an elongated key (1Q) extending along a key axis 5 and having a plurality of permanent magnets (15) spaced along said key axis according to a predetermined magnetic arrangement, - a cylinder (30 ) defining a passage (34) of general shape complementary to that of the key and extending along an axis of * passage, 10. a plurality of magnetic detectors (37) spaced along said axis of passage in said cylinder (30) according to a detection arrangement corresponding to said magnetic arrangement, each detector changing state when it is juxtaposed with the magnet which corresponds to it, - a lock (46) 15. and an electronic circuit connected between said lock ( 46) and said detectors (37) for opening said lock (46) when all the detectors cost (37) have changed state due to their juxtaposition with the magnets which correspond to them in the key. 2 / A system according to claim 1 characterized in that the key (10) has a barrel (11) of uniform cross section insertable in said passage (34) and a handle (12) which normally remains outside said passage (34 ). 3 / A system according to claim 2, characterized in that said magnets and said detectors (37) are also angularly spaced from their respective axes, 4 / A system according to claim 3, characterized in that said passage (34) is open at its two axial ends. 5 / A system according to claim 3, characterized in that said key (10) can rotate around its axa when its barrel (11) is introduced into said passage (34). 6 / A system according to claim 5, characterized in that said cylinder (30) is provided with additional detectors (37) for detecting said magnets (15) in several angular positions of the key (10) in said passage (34) , said circuit actuating said lock (46) only when said detectors (37) have changed states in a predetermined sequence corresponding to the results of rotation of the key in said passage with a predetermined sequence of angular deviations , 7 / A system according to claim 3, characterized in that it further comprises at least one additional detector (37 ') which is not normally juxtaposed with one of the magnets (15) when the key (10) is inserted in the passage (3i) with the magnet magnets (15) juxtaposed with the detectors (37) mentioned first, to prevent the operation of the lock (46) when the additional detector (37 *) is juxtaposed with a magnet and changes 'state. 10 8 / A system according to claim 3, characterized in that said key (10) comprises a stack of discs, some of which (14) with peripheral notches (16), said magnets (15) being arranged in said notches (16), 9 / A system according to claim 8, characterized in that said cylinder (30) comprises a plurality of rings (35) with radial notches (35), said detectors (37) being housed in the notches (36) of the rings (35). 10 / A system according to claim 9, characterized in that said discs (14) are wrapped in a non-magnetic sheath (13). 20 11 / A system according to claim 10, characterized in that said passage (34) is sheathed with a non-magnetic sheath (33), 12. A system according to claim 3, characterized in that the barrel (11) of the key (10) and said passage (34) are substantially cylindrical.