FR2761396A1 - ELECTRONICALLY CONTROLLED LOCK - Google Patents

Abstract

The invention concerns a lock with electronic control wherein the nut or bit (7) can be coupled with the plugs (13, 24) and the handles (12) or keys (75) by means of a coupling rod (33) sliding inside the nut or bit (7) and the plugs (13, 24). When the data entered with the key (75) coincide with the data known to the lock, the electronic control (53) delivers a validation signal triggering a linear actuator (36) which acts on the coupling rod (33) moving it between positions of which one is operative and the other inoperative.

Description

 The present invention relates to an electronically controlled lock of the type comprising a housing fixed to a door, at least one movable locking member mounted in the housing and which can be moved between a first position or active position to lock the door and a second position or inactive position allowing the door to be opened, a driven member that can rotate in the housing around an axis of rotation perpendicular to the plane of the door and mechanically coupled to the locking member, at least one driving member that can rotate around said door axis of rotation, a coupling member movable in a hole formed in one of the driving and driven members between a first position, in which the driving and driven members are uncoupled from each other and can rotate freely one relative to the other, and a second position in which the coupling member is engaged in another hole formed in the other of the two menan members t and driven so that these two driving and driven members are coupled to each other and can rotate together to move the locking member at least from its first to its second position, input means for entering a code in the lock, an electronic control and command module coupled or couplable to said input means for comparing the code entered with a reference code stored in the electronic module and for delivering a door opening authorization signal in case of identity of the two codes, and a control means for moving the coupling member from its first position to its second position in response to said door opening authorization signal.

 A lock of the above-mentioned type is described in patent application EP-AO 290 330. In this known lock, the driven member and the driving member form part of a lock barrel intended to actuate the deadbolt of the lock. The driven member is formed by the barrel bit, while the leading member is constituted by one of the two barrels or cylinders of the barrel. The barrel is partially engaged in an axial cylindrical hole in the bit. In the part of the barrel surrounded by the bit, a recess is formed which extends diametrically relative to the barrel and in which the coupling member is located. The latter is slidably mounted in the recess and can be moved radially relative to the barrel under the action of a first spring from a uncoupling position to a coupling position. In the uncoupling position, the coupling member is entirely inside the barrel and the latter and the bit can rotate freely relative to each other. In the coupling position, the coupling member protrudes radially outside the barrel and is engaged in one of the four recesses provided in the peripheral wall of the cylindrical hole of the bit, so that the latter can be driven in rotation by the barrel when the latter is itself driven in rotation by means of an appropriate key inserted into the barrel. A locking member is slidably mounted in another recess of the barrel in a direction parallel to the direction of movement of the coupling member. The blocking member is biased by two other stiffer coil springs than the first spring and it acts on the coupling member to keep it in its uncoupling position.

The coupling member is also held in this uncoupling position by the plunger core of an electromagnet which is movable in a direction parallel to the axis of rotation of the barrel and the bit.

The locking member has an inclined plane which can cooperate with a corresponding inclined plane of the key so that, when the key is inserted into the barrel, the latter moves the locking member radially against the force. of the two springs which act on it. Under these conditions, the coupling member is no longer retained by the blocking member, but it remains still maintained in its uncoupling position by the plunger core of the electromagnet.

The codes contained in the programmable memories of the key are then sent successively to the electronic module which is housed with the electromagnet inside the bit and which compares the aforementioned codes with that or those contained in its memory. When the electronic module detects the identity between two codes, an electrical pulse is applied to the electromagnet which causes its plunger core to retract, which has the effect of completely freeing the coupling member which can then be moved by the first spring to its coupling position. Electrical connections are provided to ensure the electrical supply of the electronic module and the electromagnet from a battery contained in the key.

 This known lock has a number of drawbacks.

When the key is inserted into the barrel, as soon as it pushes the locking member away from the coupling member, the first spring immediately tends to push the latter member towards its uncoupling position. At this time, the coupling member is still retained in its uncoupling position by the plunger core of the electromagnet. Consequently, the force of the first spring is transmitted by the coupling member to the plunger core of the electromagnet.

As this force is directed perpendicular to the axis of the plunger, it follows that the latter tends to be offset in the cylindrical hole for guiding the core which is formed in the carcass of the electromagnet coil, and that the plunger core is clamped laterally on two opposite sides, as if it were in pincers, between the coupling member and the wall of the cylindrical guide hole. Under these conditions, the plunger core is subjected to very high friction which can cause the plunger core to jam and prevent it from retracting inside the solenoid coil when it is excited by the electrical impulse produced by the electronic module. It is therefore necessary to use an electromagnet capable of producing a sufficient force to be able to overcome the aforementioned friction, and / or to produce an electric pulse of high energy to excite the electromagnet. If we consider that the cylindrical part of the bit of a lock barrel usually has a relatively small outside diameter (about 16mm for the bit of a standard lock barrel with European profile), the electromagnet represented in the drawings of patent application EP No. 0 290 330 should then have an external diameter of approximately 3mm and an axial length of approximately 4mm in order to be able to be housed next to the electronic module inside the central cavity of the bit, As shown in this European patent application, it is doubtful that such a small electromagnet, if any, has sufficient force to overcome the friction mentioned above.

 In addition, since the battery which supplies the voltage necessary for the operation of the electronic module and the electrical energy necessary to excite the electromagnet is housed in the key, it necessarily has small dimensions and, consequently, a small voltage and low storage capacity for electrical energy. Consequently, although a single brief electrical pulse is theoretically sufficient each time to excite the electromagnet and unlock the coupling member as indicated in the aforementioned European patent application, it is however doubtful that a stack of such small dimensions has sufficient capacity to allow actuation of the lock several times a day over a long period of time, that is to say for at least one year as is desirable.

Electronic locks are also known, comprising a lock barrel whose bit can be actuated either manually by means of an operating button located on the inside of the door, or by means of a rotary electric motor and d 'a clutch housed in the operating button, when an appropriate key is inserted into the external barrel of the lock barrel. Locks of this kind are marketed for example by the company EVVA-WERK
GmbH, VIENNA, AUSTRIA. Although these locks work satisfactorily, they nevertheless have the drawback of requiring an external electrical supply connected to the AC mains to operate the electric motor. This requires the installation of a power supply line which increases the cost of installing the lock. In addition, in the event of a power failure, the lock can no longer function, so it is necessary to provide a backup power supply which further increases the cost of the lock.

 The two known locks described above are designed to control the deadbolt of the lock. When the lock does not have a deadbolt, but only a latch bolt, for example as is often the case for the doors of hotel rooms, it would be desirable that the latch bolt of these locks can be actuated by means of an electronic control system.

 The present invention therefore aims to provide an electronically controlled lock which is simpler and more reliable than that described in the aforementioned European patent application.

 The invention also aims to provide a control system which can be adapted to a standard lock for controlling the latch bolt of the lock, without any modification of the mechanical members contained in the housing of the lock.

 The present invention also aims to provide a control system which can be adapted to a standard lock for controlling the deadbolt of the lock, without modification of the mechanical members contained in the lock housing with the exception of the barrel of the lock.

 The present invention also aims to provide an electronically controlled lock which can operate entirely autonomously, that is to say without external power supply (AC sector or battery incorporated in a key), over a long period of time, preferably at least one year.

 To this end, the present invention provides an electronically controlled lock of the type defined in the preamble, characterized in that the driving and driven members are spaced apart from each other along their axis of rotation, in that the holes respective of the driving and driven members extend in the direction of said axis of rotation, and in that the control means consists of a linear actuator, which is arranged in axial alignment with the driving and driven members and whose armature or movable element is fixed to the coupling member.

 According to a preferred embodiment, the coupling member can be constituted, in a manner known per se, by a coupling rod of non-circular section, for example square, which is slidably mounted in the hole of the driven member and in an axial hole with a corresponding non-circular section of a first hollow axis which is rotatably mounted on the inside of the door, while being fixed in the axial direction, and which has an internal end adjacent to the driven member and an external end projecting from the inside of the door. A hollow knob can advantageously be fixed to the external end of the first hollow axis. Under these conditions, the electronic module, the linear actuator and a DC power source can be housed in the hollow knob.

 In the case where the locking member of the lock is a latch bolt, the driven member is then the follower of the lock and the driving member can be constituted by a second axis, which is mounted to rotate in alignment axial with the first axis on the outside of the door, while being fixed in the axial direction. At its internal end, which is adjacent to the follower, the second axis has an axial hole of non-circular section, in which the coupling rod can be engaged when it is moved axially from its first to its second position. An operating handle, for example a pommel, a button or a lever, is fixed to the external end of the second axis.

 In the case where the locking member of the lock is a dead bolt, the driven member is then the bit of a lock barrel and the leading member is the barrel of the barrel, which is rotatably mounted in the barrel , on the outside of the door, in axial alignment with the first axis which is itself rotatably mounted in the barrel on the inside of the door. In the internal end of the barrel, which is adjacent to the bit, an axial hole of non-circular section is formed in which the coupling rod can be engaged axially when it is moved from its first to its second position. Usually, the other end or external end of the barrel comprises a key entry with a non-circular section intended to receive a key having a rod, at least part of which has a non-circular section corresponding to that of the key entry of the barrel.

Other characteristics and advantages of the present invention will appear in the following description, given by way of purely indicative and in no way limiting, with reference to the appended drawings in which - FIG. 1 is a side view, with parts broken away, showing a first
embodiment of the electronically controlled lock according to
the invention, in the case where the control members of the lock are
arranged for controlling the latch bolt of the lock, the door on
which is installed the lock being seen from the side of the edge; - Figure 2 is a view along arrow F of Figure 1, at a smaller
ladder; - Figure 3 is a partial sectional view, on a larger scale, along
line III-III of Figure i; - Figure 4 is a sectional view, on a larger scale, along the line
IV-IV of Figure 2 - Figure 5 is a side view, broken away, showing a second
embodiment of the electronically controlled lock according to
the invention, in the case where the control members of the lock are
arranged to control the deadbolt of the lock, the door on
which is installed the lock being seen from the side of the edge, - Figure 6 shows a key usable with the lock of Figure 5, - Figure 7 is a front view, with parts broken away, of the lock of the
Figure 5 view along arrow G of this figure; - Figure 8 is a front view of the lock knob located on the side
interior of the door and seen along arrow H in Figure 5; FIG. 9 is a sectional view along line IX-IX of FIG. 7,
The coupling member of the lock being shown in a
position in which the outer barrel and the bit of the barrel of the
lock are uncoupled; - Figure 10 is a view corresponding to Figure 9, in which the
barrel and bit of the barrel of the lock are coupled by the member
mating; - Figure 11 shows on a larger scale certain details of the lock
Figures 5 to 10; - Figure 12 is a sectional view along line XII-XII of Figure II; - Figure 13 is a block diagram showing the circuits
electric and electronic lock control according to
the invention; - Figure 14 is a timing diagram to explain the
operation of the lock according to the invention.

 The lock 1 shown in FIGS. 1, 2 and 4 comprises a standard housing 2 embedded in the edge or edge 3 of a door 4. The lock 1 comprises, as a locking member, a latch bolt 5, which is slidably mounted in the housing 2 and which is pushed by a spring 6 into a position in which it projects from the edge 3 of the door 4 and cooperates, in service, with a keeper (not shown) fixed to the frame the door to keep it closed.

 The lock 1 further comprises, in known manner, as a driven member, a nut 7 which is rotatably mounted in circular holes formed in the side walls 2a and 2b of the housing 2 so as to be able to rotate around a axis 8 perpendicular to the plane of the door 4. The follower 7 is mechanically coupled, in a known manner and, for this reason, not shown in detail, to the tail 9 of the latch 5, so that the latter can be retracted inside the housing 2, against the restoring force of the spring 6, to allow the opening of the door 4 when the follower 7 is rotated as will be seen later. In a known manner, two handles 11 and 12 are mounted respectively on the external side 4a and on the internal side 4b of the door 4 so as to be able to rotate around the axis 8. In the embodiment shown in FIGS. 1, 2 and 4, the outer handle 11 is constituted by a knob or cylindrical button, but it could have any other shape and be for example constituted by a lever. The outer handle 11 is rigidly fixed to an axis 13 for example by means of a screw 14 as shown in FIG. 4. The axis 13 is mounted for rotation in a bearing 15 centered on the axis of rotation 8 of the follower 7 The axis 13 is retained against any axial movement by a screw 16 which is screwed into a radial hole in the bearing 15 and which has a smooth internal end engaged in sliding in a circumferential groove 17 formed in the external cylindrical surface of the axis. 13. As is more particularly visible in FIG. 4, the outer handle 11 is hollow and defines with the axis 13 and the bearing 15 an annular cavity in which a spiral spring 18 can be placed, one of the ends of which is fixed. at the bearing 15 and the other end is fixed to a ring 19 itself rigidly fixed to the axis 13 by a locking screw 21. In a manner known per se, stops (not shown) can be provided or formed respectively on the bearing 15 and on the ring 19 or on the internal cylindrical wall of the handle 11 to define the two extreme angular positions of the handle 1 1 in its rotational movement around the axis 8. The spiral spring 18 acts on the axis 13 and, consequently, on the handle 11 to maintain it in one of its two extreme positions when no action is exerted on the handle 11.

 The internal handle 12, which is also produced in the form of a knob, for example cylindrical, is rigidly fixed, for example by means of two cotter pins 22, to a circular flange 23 which is itself rigidly fixed to an axis 24 or is an integral part of this axis, at one end thereof. The axis 24 is rotatably mounted in a bearing 25, while being retained against any axial movement by a screw 27 which is similar to the screw 16 and which engages to slide in a circumferential groove 28 formed in the outer cylindrical surface of the axis 24. The two bearings 15 and 25 are fixed to the door 4, respectively on the external side 4a and on the internal side 4b thereof, by means of two screws 29. Although the two screws 29 are located in a horizontal plane containing the axis of rotation 8 (see Figure 2), one of the two screws 29 has been shown in the sectional view of Figure 4 for convenience of drawing and to show how it ensures the fixing of the two bearings 15 and 25. Each of the two screws 29 passes through aligned holes provided in the door 4 and in the side walls 2a and 2b of the housing 2 of the lock. The axes 13 and 24 are engaged, with a certain radial clearance, in a cylindrical hole 31 which is formed in the door 4 so that its axis is at least approximately coincident with the axis of rotation 8 of the follower 7.

The respective internal ends of the axes 13 and 24 are located near the follower 7, on each side thereof.

 The follower 7 conventionally includes a central hole 32 with a non-circular section, for example with a square section. The handle 12 is permanently coupled to the follower 7 by means of a coupling rod 33 which has a non-circular section corresponding to that of the hole 32 of the follower 7 and which is slidably mounted in said hole 32 and in an axial hole 34 of the axis 24. The hole 34 also has a non-circular section corresponding to that of the hole 32 and the coupling rod 33, so that the follower 7 can be rotated by means of the rod coupling 33 and the axis 24 when the handle 12 is manually rotated. Thus, on the inside of the door 4, the lock 1 can still be operated in a conventional manner using the handle 12 to retract the latch 5 and open the door 4.

According to the present invention, the internal end of the axis 13, which is adjacent to the nut 7, has an axial hole 35 of non-circular section and the coupling rod 33 can be moved axially by a linear actuator 36 from a first position shown in Figure 4, in which the follower 7 and the axis 13 are not coupled to each other
The other and can freely rotate relative to each other, to a second position shown in Figure 1, in which the coupling rod 33 is engaged in the hole 35 of the axis 13. In this second position, the follower 7 and the axis 13 are coupled to each other and the lock 1 can be operated from the outside of the door 4 by means of the handle 11. The linear actuator 36 can be for example constituted by an electromagnet whose excitation coil is fixed to the external end of the axis 24 or to the circular flange 23 of the latter, so that the movable armature or plunger core 37 of the electromagnet is aligned axially with the coupling rod 33. For example, the electromagnet 36 can be constituted by an electromagnet of the STA Series Push-13mm type
Dia.x25mm manufactured by LUCAS CONTROL SYSTEMS
PRODUCTS, in Vandalia, Ohio, USA. Such an electromagnet can be easily housed inside the handle 12 which is produced for this purpose in the form of a hollow knob. On the side of the coupling rod 33,
The movable armature or plunger core 37 of the electromagnet is extended by a threaded rod 38 which is axially fixed to a cylindrical shank 39 forming an integral part of the coupling rod 33 or fixed to it and extending it by direction of the electromagnet 36. The cylindrical tail 39 has a smaller diameter than the hole 34 of the axis 24 for reasons which will be understood later.

When the electromagnet 36 is excited by an electric pulse, its movable armature 37 and the coupling rod 33 are moved from the first position shown in Figure 4 to the second position shown in Figure 1 in which, as shown above, the follower 7 and the axis 13 are coupled to each other and can rotate together. A controlled locking device is provided for locking the movable armature 37 in the first and second positions mentioned above. To this end, an auxiliary electromagnet 41 is provided, the excitation coil of which is carried by a support 42 which is fixed inside the hollow knob of the handle 12 so that the movable armature 43 of the the auxiliary electromagnet 41 is movable in a radial direction relative to the axis of rotation 8 which is also the axis of translation of the movable armature 37 of the electromagnet 36. For example, l auxiliary electromagnet 41 can be constituted by an electromagnet of the type TDS-03A from the company LU CAS
CONTROL SYSTEMS PRODUCTS mentioned above.

 A spring leaf 44 is fixed between the support 42 and the knob of the handle 12 and has a forked end, the two branches of which are engaged in a circumferential groove formed in the peripheral surface of the movable frame 43. The spring leaf 44 maintains the movable armature 43 in the extended position shown in Figures 1 and 4 when the auxiliary electromagnet 41 is not energized. A disc 45 is fixed to the free end of the movable armature 37 of the electromagnet 36. In its extended position the movable armature 43 of the auxiliary electromagnet 41 cooperates with one or the other of the two faces of the disc 45, depending on whether the movable armature 37 of the electromagnet 36 is in its first or in its second position, in order to maintain said movable armature 37 in its first or its second position. To be able to move the movable armature 37 of the electromagnet 36 from its first position to its second position or vice versa, it is therefore necessary first of all to excite the auxiliary electromagnet 41 in order to retract its movable armature 43 .

In the embodiment shown, the electromagnet 36 is unidirectional, that is to say that when it is energized, its movable armature 37 is moved in one direction, from left to right in the Figure 4, to move said movable frame 37 and the coupling rod 33 from their first to their second position mentioned above. In this case, a permanent magnet 46 and / or a spring 47 is provided to return the movable armature 37 of the electromagnet 36 to its first position (FIG. 4) when the movable armature 43 of the electro- auxiliary magnet 41 is retracted. If the permanent magnet 46 is provided, the disc 45 must be made of a ferro-magnetic metal. On the other hand, if only the spring 47 is provided, the disc 45 can be made of any suitable magnetic or non-magnetic material. Instead of being constituted by a unidirectional electromagnet,
The electromagnet 36 could consist of a bidirectional electromagnet, the movable armature 37 of which can be moved electromagnetically in both directions using electrical pulses of appropriate polarities. In the latter case, the permanent magnet 46 can be removed and replaced by a simple mechanical stop, and the spring 47 can also be removed.

 Normally, when the lock 1 is not actuated, the follower 7 is biased in a rest position, which corresponds to the first position or out position of the latch 5, by the spring 6 and / or by an additional spring (not shown) acting on the follower 7. On the other hand, as we saw above, the axis 13 and the handle 11 are biased by the spiral spring 18 in a rest position predefined by stops. Assuming that the axial hole 35 of the axis 13 has a non-circular section of the same shape as that of the coupling rod 33, the rest position of the axis 13 is determined by the stops so that the profile of the circular section of the hole 35 angularly coincides with the profile of the non-circular section of the coupling rod 33 in the rest position of the nut 7, so that the coupling rod 33 can be engaged in the hole 35 when it is moved from its first to its second position by the electromagnet 36. However, because of manufacturing and / or mounting tolerances, because of a possible play in the rotational movements and / or because of the aging of the spring 18 and / or of the spring or springs recalling the follower 7 in its rest position, it could happen that the profile of the hole 35 of the axis 13 does not angularly coincide with the profile of the coupling rod 33 and that it cannot be engaged in the hole 35 when the electromagnet 36 is actuated. To avoid this, in the case where the coupling rod 33 has a square section, the hole 35 of the axis 13 is preferably formed so as to have a cross-shaped section such as that shown in the figure. 3. Thus, each of the four corners of the square section of the coupling rod 33 can engage, with play in the circumferential direction, inside one of the four branches of the cross-shaped section of the hole 35. Under these conditions, it is practically ensured that the coupling rod 33 can be engaged axially in the hole 35 even if the square profile of the rod 33 does not angularly coincide with the square profile represented by lines mixed 48 in figure 3.

 Preferably, in the center of the hole 35 of the axis 13 is further fixed a cylindrical guide rod 49, which projects beyond the internal end of the axis 13, enters an axial bore 50 of the rod coupling 33 and is in sliding contact with the latter, as shown in FIGS. 3 and 4.

 The lock 1 further comprises, in a manner known per se, input means for entering a code in the guide lock 49, in the axial bore 50 and in another passage 58 formed obliquely in the coupling rod 33 , then is loosely wound around the cylindrical tail 39 of the coupling rod 33 and finally passes through a passage 59 formed obliquely in the axis 24 and / or the flange 23, the end of the cable 55 being welded to a contact pad provided on the printed circuit board 54. In order to facilitate the establishment of the electrical connection between the sensor 51 and the electronic module 53, the cable 55 can be divided into two parts which can be connected to each other by a pair of male and female connectors 60.

A first of the two connectors can be carried by the guide rod 49, while the second connector can be slidably mounted in the bore 50 of the coupling rod 33 and be pushed by a spring towards the first connector. Instead of the two male and female connectors 60, it is also possible to provide contact pads suitably electrically insulated with respect to the guide rod 49 and to the coupling rod 33. The cable 55 is used both for data transmission between the sensor 51 and the electronic module 53, and to the current supply of the sensor 51.

By way of example, the sensor 51 may consist of a reader capable of reading a code which is presented to it by an electronic key 54a (FIG. 1) of the TOUCH MEMORY type (registered trademark). Such a reader and such an electronic key are manufactured by the company DALLAS
SEMICONDUCTOR. Of course, instead of the code entry means indicated above, other known means could be used, such as an infrared remote control and an infrared receiver, the latter being able to be accommodated in place of the sensor. 51.

 The electrical energy required to operate the electronic module 53, the electromagnets 36 and 41 and the sensor 51 can be supplied by one or more batteries 61, for example two lithium batteries of the CR-2 / 3A type manufactured by the PANASONIC company. The two batteries 61 can be housed inside the hollow knob of the interior handle 12 as shown in Figure 4 (see also Figure 8). A hatch 62 is movably attached to the knob of the interior handle 12, for example by means of a screw 63, to allow the insertion of the two batteries 61 in the knob and their replacement by new batteries.

 Referring to Figures 5 to 12, we will now describe a second embodiment of the electronically controlled lock according to the invention. In FIGS. 5 to 12, the elements which are identical or which play the same role as those of the lock shown in FIGS. 1 to 4 are designated by the same reference numbers and will not be described again in detail. In the lock 1 shown in FIGS. 5 to 12, the movable locking member 5 of the lock is here constituted by a dead bolt which is slidably mounted, in a conventional manner, in the housing 2 of the lock. The driving member 13 of the lock 1 is here constituted by the outer barrel of a lock barrel 65, for example a barrel with a European profile as shown in FIG. 7. The barrel 65 is supported by two rosettes 66 and 67 which are fixed respectively against the outer face 4a and against the inner face 4b of the door 4 by two screws 29 in a manner similar to that described above with regard to the bearings 15 and 25 of the lock of Figures 1 to 4. The barrel 65 is fixed and held in place by means of a screw 68 which extends perpendicular to the edge 3 of the door 4, passes through a hole 69 of the housing 2 of the lock and is screwed into a tapped hole 71 of the barrel 65 as shown in figure 7.

 The inner barrel of the barrel 65 is here constituted by a hollow pin 24, one of the ends of which projects from the inner side of the door 4 and is provided with a handle 12 which can be at any point similar to that of the lock of the Figures 1 to 4 and which contains the same elements. The outer barrel 13 and the inner barrel 24 are rotatably mounted in the barrel 65 (around the axis 8) and both protrude in a transverse notch 72 of the barrel 65, located approximately in the middle of said barrel above screw 68.

 The driven member 7 of the lock 1 is here constituted by the bit of the barrel 65, which is rotatably mounted on the ends of the outer barrel 1 3 and the inner barrel 24 which protrude into the notch 72 of the barrel 65.

When the bit 7 is rotated in a manner which will be described later, it acts in a conventional manner on the deadbolt 5 of the lock 1 to move it from a locked position to an unlocked position or vice versa according to the direction of rotation of the bit 7. The outer barrel 13 and the inner barrel 24 are retained axially in the barrel 65 for example by circlips 73.

 The internal barrel 24 of the barrel 65 and the bit 7 are permanently coupled to one another by a coupling rod 33 of non-circular section, for example of square section, which is mounted to slide, without the possibility of rotation, in holes 32 and 34 of corresponding section of the bit 7 and the inner barrel 24. In this way, on the inner side of the door 4, the bit 7 can always be rotated using the inner handle 12 to maneuver the deadbolt 5 of the lock and bring it to its unlocked position or to its locked position. The coupling rod 33 with square section is extended by a cylindrical part 39, which extends in the direction of the interior handle 12 and which is slidably mounted in a cylindrical hole 34a axially aligned with the hole 34 with square section of the internal barrel 24.

As in the first embodiment of FIGS. 1 to 4, the cylindrical part 39 of the coupling rod 33 is fixed to the rod 38 of the movable armature 37 of the electromagnet 36.

 The outer barrel 13 of the barrel 65 comprises, in a manner known per se, a key entry 74 with a non-circular section, for example in the form of a slot as shown in FIG. 7, intended to receive a key 75 having a rod 76 at least part of which has a cross section corresponding to that of the key entry 74, so that the outer barrel 13 of the barrel 65 can be rotated by the key 75 when its rod 76 has been engaged in the key entry 74 and the correct code has been entered in the lock. Preferably, the barrel 65 comprises, in the region of the key entry 74, a short longitudinal groove 77 and the external barrel 13 comprises a notch 78 whose depth, measured in a direction parallel to the axis 8, corresponds to the length of the groove 77. In addition, the key 75 preferably comprises a lug 79 which projects laterally on its rod 76. Thanks to the presence of the groove 77, the notch 78 and the lug 79, the rod 76 of key 75 can only be engaged to the bottom of key entry 74 when the external barrel 13 is in a predefined angular position in which notch 78 is aligned radially with groove 77. In this predefined position, the key entry slot 74 is for example vertical as shown in Figure 7. In addition, the barrel 65 may include, in the region of the bottom of the notch 78, a circular groove 81 of a width corresponding to the width of lug 79. Dan s these conditions, when the key 75 has been fully engaged in the key entry 74 and it is turned to rotate the outer barrel 13, the lug 79 of the key 75 runs through the groove 81, so that the key 75 can only be extracted from the key entry 74 if the external barrel 13 is in the aforementioned predefined angular position.

 According to the invention, the outer barrel 13 further comprises, at its end which is adjacent to the bit 7 an axial hole 35, which has a non-circular section, for example a square section or, preferably, a cross-shaped section like that shown in Figure 3. At the center of the hole 35, the outer barrel 13 has a cylindrical guide rod 49, which projects beyond the inner end of the barrel 13 and enters the axial bore 50 of the coupling rod 33 (see figures 9, 10 and 13).

 Preferably, a pin 82 is slidably mounted in radially aligned holes in the outer barrel 13 and in the barrel 65. A helical spring 83 resting at one of its ends on a screw 84 and at its other end on the pin 82 pushes the latter radially towards the guide rod 49 on which it is supported by means of a ball 85. Thus, when the pin 82 is engaged in the radial hole of the outer barrel 13, it maintains this the latter in its aforementioned predefined position and prevents any rotation of this barrel 13.

 When the electromagnet 36 is energized in response to a door opening authorization signal, which is produced by the electronic module 53 when a suitable key 75 is inserted into the key entry 74 of the external barrel 13 , The movable armature 37 of the electromagnet 36 moves the coupling rod 33 from the position shown in FIG. 9 to the position shown in FIGS. 5 and 10, in which the coupling rod 33 is engaged in the hole 35 of the outer barrel 13 and couples it to the bit 7. During this movement of the coupling rod 33, its beveled end which enters the hole 35 of the outer barrel 13 pushes the ball radially outwards 85 which pushes the pin 82 radially outwards. The outside diameter of the ball 85 is such that, when the coupling rod 33 is in the position shown in FIG. 10, the end of the pin 82 who is in contact with ec the ball 85 is flush with the outside surface of the barrel 13, so that it can be turned using the key 75 to operate the bit 7 and, consequently, move the deadbolt 5 by the lock. The pin 82, the spring 83, the screw 84 and the ball 85 are not absolutely essential but they make it possible to increase the security of the lock.

The means for entering the lock code can be constituted by a programmable memory 86, which is housed inside the key 75, for example in the head 87 thereof as shown in FIG. 6, and which contains the code for the lock. In this case, the rod 76 of the key may include an outer conductive metal shell 88, which forms a ground contact, and an inner conductive metal core 89 which is coaxial with the outer shell 88 and electrically insulated therefrom by an insulating material 91. The conductive core 89 forms a data line for the memory 86 and it is exposed at the end of the rod 76 of the key so as to form a contact terminal 92. Another contact terminal 93, carried by an insulating plate 94, is arranged at the bottom of
The key entry 74 of the outer barrel 13 as shown in Figures 9 and 10, to establish electrical contact with the contact terminal 92 of the key 75 when it is fully engaged in the key entry 74 as shown in figure 5.

 The contact terminal 93 can be electrically connected to the electronic module 53 in the following manner. As is better visible in FIG. 11, the cylindrical part 39 of the coupling rod 33 comprises a cylindrical cavity 90 closed by a threaded plug 95 to which the rod 38 of the movable armature of the electromagnet 36 is fixed. At least one longitudinal slot, preferably two longitudinal slots 96 are formed in the peripheral wall of the cylindrical part 39, in diametrically opposite positions, as also shown in FIG. 12 and communicate with the cylindrical cavity 90. a contact holder, preferably two contact holders 97 made of insulating material, which each carry an electrical contact 98, are fixed respectively by screws 99 to the inner barrel 24 in the bore 34a thereof. The two contact carriers 97 extend radially through the slots 96 into the cavity 90 of the cylindrical part 39 of the coupling rod 33. The guide rod 49 which is integral with the outer barrel 13, extends axially as far as in the cavity 90, more precisely as far as the region of the contacts 98. In this region, the guide rod 49 carries an electrical contact 101, constituted for example by a metal washer, which is electrically insulated from the guide rod 49 by a ring 102 made of insulating material. The metal washer 101 is kept in sliding contact with the electrical contacts 98 by means of a washer 103 made of insulating material and a screw 104 screwed into a tapped hole 105 formed in the end of the guide rod 49. The washer metallic 101 is electrically connected to the contact terminal 93 by a first electrical cable 55a which extends in a longitudinal passage, for example a groove 106, formed in the guide rod 49 and in the ring 102. At least one of the two contacts 98 is electrically connected to the electronic module 53 by a second electric cable 55b which extends in a longitudinal passage, for example a groove 107 formed in the internal barrel 24, and in a passage 59 formed in the flange 23 to which is fixed the hollow knob of the interior handle 12.

 Thus, when the key 75 is inserted into the key entry 74 of the external barrel 13 and an electrical contact is established between the contact terminals 92 and 93, the electronic module 53 reads the code contained in the memory 86 of the key 75. If the code read is identical to one of the codes stored in the electronic module 53, the latter controls the excitation of the electromagnets 36 and 41 according to a predetermined time sequence as will be described later.

 Although not shown, the lock 1 shown in FIGS. 5 to 10 may comprise, in addition to the deadbolt 5, a half-turn bolt which can be maneuvered in the conventional manner in the unlocking direction by an additional rotation of the handle. inside 12 or the key 75 following the rotation which caused the deadbolt 5 to disappear.

 In the two embodiments of the lock 1 which have been described above, the electronic module 53 comprises, as shown in FIG. 13, a microcontroller 108 which receives by the cable 55 the code read in the memory of the key 51a (Figure 1) or in the memory 86 of the key 75 (Figure 6) and which compares this code to at least one reference code contained in its own memory. If the two codes are identical, the microcontroller 108 controls several electronic switches linked to 15 in a manner which will be described later in order to excite the electromagnets 36 and 41. The power source which supplies the electrical energy necessary for the excitation of the two electromagnets 36 and 41 may advantageously comprise, in addition to the cell or battery 61, a voltage raising device arranged to charge a capacitor C of high capacity at a voltage higher than that of the battery 61 through an induction coil supplied by a high frequency pulsed current. The capacitor C can for example be constituted by a capacitor of the LVI 136 type of 2200, uF / 25V manufactured by the company PHILIPS. Such a capacitor has dimensions of the same order of magnitude as those of the battery 61 and can be easily housed inside the hollow knob of the interior handle 12. The induction coil of the voltage-raising device can advantageously be constituted by the excitation coil of the electromagnet 36, which avoids having to provide an additional coil.

High frequency pulsed current, the frequency of which may for example be between ten kilohertz and a few hundred kilohertz depending on the value of the self-induction coefficient of the coil of the voltage step-up device and according to the desired time of the charge or the recharging of the capacitor C, can be produced from the battery 61 and using some of the aforementioned electronic switches li - 15. In this case, the electronic switches li - Ig of the electronic module 53 can be connected in the following manner. The electronic switches li and 12 are connected in series between the positive and negative terminals of the battery 61, the negative terminal being grounded. A protection diode D is preferably connected between the positive terminal of the battery 61 and the electronic switch li. The electronic switch 13 is connected on the one hand to a junction point 109 between the electronic switches li and I2 through the coil of the electromagnet 36 and on the other hand to earth. The electronic switch 14 is connected on the one hand to a junction point 111 between the coil of the electromagnet 36 and the electronic switch 13 and on the other hand to a first armature of the capacitor C, the second armature of which is connected to ground. The electronic switch 15 is connected in series with the excitation coil of the auxiliary electromagnet 41 between the first armature of the capacitor C and the ground. The electronic switches li can be constituted by switching transistors, preferably MOSFET transistors such as for example the IRLZ14S components or
IRLZ24S or IRLZ34S manufactured by the company INTERNATIONAL
RECTIFY.

 We will now describe the operation of lock 1 and its electronic module 53 during a complete unlocking cycle with reference to the functional diagram of FIG. 13 and to the timing diagram of FIG. 14. In the timing diagram of FIG. 14, the successive states taken by the movable armature 43 of the electromagnet 41 and by the movable armature 37 of the electromagnet 36 are shown, the evolution of the voltage Uc across the capacitor C, and the successive states taken respectively by the electronic switches li - 15 during the complete operating cycle. For the electromagnet 41, the high state corresponds to the retracted or retracted position of its movable armature 43, which releases the disc 45 from the movable armature 37 of the electromagnet 36, while the low state corresponds to the extended position of the movable armature 43, which blocks the disc 45 in one or the other position of the movable armature 37 of the electromagnet 36. For the electromagnet 36, the low state corresponds to the extended position of its movable frame 37, in which the driven element 7 and the driving element 13 are not coupled by the coupling rod 33, while the high state corresponds to the retracted position of the movable armature 37, in which the elements 7 and 13 are coupled to one another by the rod 33. For the electronic switches I1 - I, the low state corresponds to the open state, that is to say say in the blocked or non-conducting state of the switch, while the high state corresponds to the closed state, that is to say the conducting state of the switch. To fix the ideas, it will be assumed that the capacitor C has been charged beforehand by the voltage step-up device to a voltage which is for example 20V.

 In a first phase, a person wishing to open door 4 and provided with a key 51a (FIG. 1) or with a key 75 (FIG. 6) applies the key 51a against the reader 51 (FIG. 4) or introduces the key 75 in the key entry 74 of the barrel 13 (Figure 9). The microcontroller 108 then checks whether the code contained in the memory of the key corresponds to one of the codes stored in its own memory and it transmits a door opening authorization signal in the event of identity of the codes. The duration of this first phase is variable and essentially depends on the speed with which the key is presented to the lock, the verification by the microcontroller of the code contained in the memory of the key requiring only ten milliseconds.

 In a second phase, which begins with the start of the emission of the door opening authorization signal, this signal is sent by the microcontroller 108 by the line 112 to the electronic switch 15 to make it conductive for a time. predefined t1.

During this time t1, the capacitor C is partially discharged in the coil of the electromagnet 41 in order to excite it. The time t1 is chosen so as to have a sufficient duration for the movable armature 43 of the electromagnet 41 to pass from its out-of-rest position to its retracted position. This duration is for example 21 ms. At the end of time t1, the voltage Uc across the capacitor C has dropped to a value which is for example 17.5V. At the end of time t1 or just before the electronic switch Ig returns to the non-conductive state, the microcontroller 108 sends by lines 113 and 114 control signals to the electronic switches I2 and 14 to make them pass to the conductive state for a predefined time t2. During this time t2, the capacitor C partially discharges through the electronic switch I4, the coil of the electromagnet 36 and the electronic switch I2, so that the electromagnet 36 is energized during this time. The time t2 is chosen so as to have a sufficient duration, for example 16mus, for the movable armature 37 of the electromagnet 36 to pass from its out of rest position to its retracted position and for coupling to occur simultaneously. between the members 7 and 13 by means of the coupling rod 33. As soon as the disc 45 of the movable armature 37 of the electromagnet 36 has passed beyond the movable armature 43 of the electromagnet 41 , since the coil of the latter electromagnet is no longer energized at this time, its movable armature 43 is returned to its resting position by the leaf spring 44 and it blocks the disc 45 in the retracted position of the movable armature 37, thus maintaining the coupling between the members 7 and 13. At the end of time t2, the voltage Uc across the capacitor C has dropped to a value which is for example equal to 5.5V.

 At the end of time t2 begins a third phase during which the person who holds the valid recognized key can operate the locking member 5 of the lock 1 by rotating the outer handle 11 (Figure 1) or the key 75 (Figure 5 ) which has been introduced into the key entry 74 of the barrel 13, and it can thus open the door 4. From the start of the third phase and while the user is operating the external handle 11 or the key 75, the microphone -controller 108 controls the recharging of capacitor C.

To this end, the microcontroller 108 sends for a predefined time t3 a series of short control pulses to each of the electronic switches I1, I3 and 14 respectively by lines 115, 116 and 114. The pulses can have a frequency which is for example between ten kilohertz and a few hundred kilohertz. The pulses sent to the switches li and 13 coincide in time, while the pulses sent to the electronic switch I4 alternate with the pulses sent to the electronic switches I1 and 13, so that the latter two switches are in the conductive state when the switch 14 is in the non-conducting state and, conversely, that the switch 14 is in the conducting state when the switches li and 13 are in the non-conducting state. In this way, each time that the switches I, and 13 are in the conductive state, the coil of the electromagnet 36 accumulates the energy supplied by the battery 61, while the capacitor C is disconnected. Then, each time the switch 14 is in the conductive state, the energy accumulated in the coil of the electromagnet 36 while the switches li and 13 were in the conductive state, is transferred through the switch 14 to capacitor C.

In this way, the capacitor C gradually recharges over time t3 to a voltage whose value is for example 17.5V. The duration of the recharging of the capacitor C is for example of is.

A fourth phase begins at the completion of a time period t4 which begins at the same time as the second phase and which has a predefined fixed duration, for example 5 s, which is normally sufficient for the user to be able to operate the organ. for locking the lock 5 by means of the external handle 11 or by means of the key 75. At the start of this fourth phase, the microcontroller 108 sends via the line 112 a control signal to the electronic switch 15 for passing it in the conductive state for a predefined time t5 having for example a duration of 21 ms. During this time t5, the capacitor C partially discharges through the switch Ig in the coil of the electromagnet 41 in order to excite it. As a result, the movable armature 43 of this electromagnet is retracted and releases the disc 45 from the movable armature 37 of the electromagnet 36, so that the movable armature 37 is brought back by the spring 47 and / or by the permanent magnet 46 in its starting position. When the movable armature 37 reaches its starting position, at the end of a time t6 having for example a duration of 16 ms,
The movable armature 43 of the electromagnet 41, which is no longer excited at this time, is brought back by the spring leaf 44 to its extended position, in which it again blocks the disc 45 of the movable armature 37 of the electromagnet 36. At this time, the members 7 and 13 of the lock 1 are no longer coupled to each other by the coupling rod 13 and the locking member 5 does can no longer be operated by means of the external handle 11 or by means of the key 75. However, after entering the locai whose access is controlled by door 4, and after having closed the door, the user can operate the locking member 5 of the lock, to bring it into its locking position, by means of the interior handle 12.

 At the end of time t5, the voltage Uc across the capacitor C has fallen to a value which is for example equal to 14V.

At the end of a period of time t7, which begins at the start of the fourth phase (end of time t4) and which has a predefined fixed duration at least equal to the sum of times t5 and t8, begins a fifth phase, which is a phase of recharging the capacitor C at the initial voltage of for example 20V. During this fifth phase, which for example has a duration of 600 to 700 ms, the microcontroller 108 sends a series of high frequency pulses to each of the electronic switches li, 13 and 14 respectively by the lines 115, 116 and 114 , in order to switch the switches li and I3 to the conductive state alternately with the switch 14 in a manner similar to that described above with regard to the third phase. At the end of this fifth phase, the lock is again ready to operate, that is to say that a key containing an appropriate code can be presented again to the lock to control the coupling of members 7 and 13 of it by means of the coupling rod 33 and allow

 According to the above description, the invention makes it possible to control the operation of a common type mortise lock. It can be applied to an existing lock comprising a latch bolt or to an existing lock comprising a deadbolt and possibly a latch bolt, without the need to dismantle the existing lock; the locking members (latch bolt and / or deadbolt) remain those of the existing lock, without any modification.

 If you wish to order the latch bolt from an existing lock, simply replace the existing drive rod with standard square section and the two outer and inner handles by the outer handle 1 1 (Figures 1 to 4) whose axis 13 has the hole 35, and by the inner handle 12 which contains the electromagnets 36 and 41, the electronic module 53 and the two batteries 61, and whose axis 24 contains the rod coupling 33 which has a standard square section corresponding to that of the square rod driving the existing lock. The rod 33 is simply engaged in the square hole of the follower 7 of the existing lock in place of its standard square drive rod.

 In the case where one wishes to order the deadbolt of an existing lock, and possibly also the half-turn bolt of the lock if it is equipped with it, it suffices to replace the standard mechanical barrel of the lock by barrel 65 with its outer barrel 13 and its inner barrel 24 provided with the inner handle 12, which are shown in FIGS. 5 to 10.

The bearings 15 and 25 (FIG. 4) or the rosettes 66 and 67 (FIGS. 5 and 9) may be standard commercial elements having an outside diameter of 50 mm if the housing 2 of the lock has rosette fixing holes (for the passage of the two screws 29) conforming to the standard
NF P 26-414. If the lock housing does not have the aforementioned rosette fixing holes, the bearings 15 and 25 or the rosettes 66 and 67 can for example be replaced by rectangular exterior and interior fittings having for example a width of 50 mm and a length at least equal to 200mm. Such fittings are also commercially available.

 The lock according to the invention can be easily installed by a non-specialized person having a tool commonly used for carrying out domestic work. There is no cable to pass through door 4 and no electrical or electronic knowledge is required for the installation of the lock. In addition, as the electrical energy necessary for the operation of the lock is supplied by the battery or batteries 61 housed in the knob of the interior handle 12, the lock is completely autonomous and can operate without any connection with a current distribution network. .

In a manner known per se, each key 51a or 75 can contain a certain number of different codes, each corresponding to a particular door. Likewise, the memory of the electronic module 53 can contain a certain number of different codes, each corresponding to a particular key entrusted to a particular user. In addition to its function for managing communications with the key 51a or 75, its function for recognizing and authenticating the code or codes contained in the key, and its function for controlling the switches li - 15 for actuating the electro- magnets 36 and 41 and to cause recharging of the capacitor C, the microcontroller 108 can also have the following functions 1. It can ensure the recording and, if necessary, the time stamping of the
transactions made.

2.11 can communicate with an external device for monitoring and
control which has an interface which can be coupled with the
reader 51 of FIG. 4 or an interface which can be introduced to the
place of the key 75 in the key entry 74 of the barrel 13 of FIG. 5, and
which allows:
a) to cancel a code corresponding to a lost or stolen key;
b) storing in the memory of the microcontroller 108 a code
corresponding to a new key;
c) transfer to the memory of the external control and
orders the recorded data relating to the latest
transactions carried out by the microcontroller 108.

 Although the invention has been described with regard to a lock, the housing 2 of which is embedded in the edge 3 of a door 4, the invention also applies to locks, the housing of which contains the locking mechanism is fixed. on one side of the door, preferably on the inside of the door.

 It is, of course, moreover that the embodiments of the invention which have been described above have been given by way of purely indicative and in no way limitative example, and that numerous modifications can be easily made by those skilled in the art. art without departing from the scope of the invention.

 Thus, in particular, the transmission of data between the reader 51 and the electronic module 53 or between the key 75 and the electronic module 53, instead of being carried out by means of an electric cable, can be carried out at less in part for example by optical means as is known per se.

 In addition, instead of the reader 51 and the electronic key 51a or instead of the electronic key 75 which have been described above, other known means can be provided for entering a code in the lock. For example, the code entry means can be constituted by a numeric or alphanumeric keyboard, by a magnetic card reader, by an electro-optical punch card reader or by other similar readers. In this case, the keyboard or the reader can be carried by a box which is fixed to the door 4, on the outside of the latter, and which can at the same time serve as an external lining for the journalling of the axis 13 of the external handle 11, in place of the bearing 15, or to serve as an external support for the barrel 65, in place of the rosette 66.

 In addition, instead of using an electromagnet 36, it is also possible to use, as linear actuator, a rotary electric motor with two directions of rotation associated with a worm gear transmission or with a rack and pinion transmission. , coupled to rod 33.

 In addition, although the linear actuator (36), the electronic module (53) and the batteries (61) are preferably housed in the inner knob (12) of the door (4) for safety reasons, these elements could be housed in the outer knob (11) in the case of the lock of Figures 1 to 4, if security is not paramount. In this case, the linear actuator (36) must be arranged to pull the coupling rod (33) instead of pushing it.

Claims (15)

1. Electronic control lock comprising a housing (2) fixed to a  door (4), at least one movable locking member (5) mounted in the  housing (2) and which can be moved between a first position or  active position to lock the door and a second position or  inactive position allowing the door to open, a driven organ  (7) which can rotate in the housing (2) about an axis of rotation (8)  perpendicular to the plane of the door (4) and mechanically coupled to  the locking member (5), at least one driving member (13) capable of  rotate around said axis of rotation (8), a coupling member  (33) movable in a hole (32) formed in one of the driven members and  leading (7 and 13) between a first position, in which the  led and leading organs are uncoupled from each other and can  rotate freely relative to each other, and a second position  in which the coupling member (33) is engaged in another  hole (35) formed in the other of the two driven and leading members,  such that these two driven and leading bodies are coupled one  to each other and can rotate together to move the organ of  locking (5) at least from its first to its second position,  input means (51, 51a, 75, 86) for entering a code in the  lock, electronic control and command module (53)  coupled or couplable to said input means to compare the code  entered to a reference code stored in the electronic module  (53) and to issue a door opening authorization signal by  case of identity of two codes, and a control means (36) for  move the coupling member (33) from its first to its second  position in response to said door opening authorization signal,  characterized in that the driven and driving members (7 and 13) are  spaced from each other along their axis of rotation (8), in that  the respective holes (32 and 35) of the driven and leading members (7 and 13)  extend in the direction of said axis of rotation (8), and in that the  control means (36) consists of a linear actuator, which  is arranged in axial alignment with the driven and driving members (7  and 13) and whose armature or mobile element (37, 38) is fixed to the member  coupling (33). 2. Electronic control lock according to claim 1,  characterized in that the coupling member (33) consists of  a coupling rod with a non-circular cross-section, which is mounted  sliding in the hole (32) of the driven member (7) and in an axial hole  (34) with corresponding non-circular section of a first hollow axis  (24) which is rotatably mounted on the inside of the door (4) while  being fixed in the axial direction, and which has an internal end  adjacent to the driven member (7) and an external end projecting from the  inner side (4b) of the door (4), in that a hollow knob (12) is  attached to the outer end of the first hollow axis (24), and in that the  electronic module (53), linear actuator (36) and a source  DC power supply (61) are housed in the knob  hollow (12). 3. Electronic control lock according to claim 2,  characterized in that the locking member (5) is a half bolt  turn, the driven member (7) is a follower and the driving member (13) is  constituted by a second axis, which is mounted to rotate in alignment  axial with the first axis (24) on the outside of the door (4), while  being fixed in the axial direction, and which has an internal end  adjacent to the follower (7) and an external end projecting from the side  outside (4a) of the door (4), said other hole (35) being formed  axially in the inner end of the second axis (13) and having a  non-circular section shaped to receive, in relation  drive, the coupling rod (33) when it is moved  axially from its first to its second position, and in that a  handle (11) is fixed to the outer end of the second axis (13). 4. Electronic control lock according to claim 3,  characterized in that the coupling rod (33) has a cross section  square and in that said other hole (35) has a cross section at  the interior of each of the four branches of which one of the four  corners of the square section of the coupling rod (33) can  engage with play in the circumferential direction. 5. Electronic control lock according to claim 3 or 4,  characterized in that the coupling rod (33) has, on the side  of the linear actuator (36), a cylindrical shank (39) which is fixed to  the movable element (38) of said linear actuator and, on the side of the second  axis (13), a cylindrical axial bore (50), in that the second axis  (13) comprises, in the center of said other hole (35), a cylindrical rod  axial guide (49) which projects beyond the internal end of the  second axis (13), penetrates into the axial bore (50) of the rod  coupling (33) and is in sliding contact therewith, and in this  that said input means comprise a sensor (51) capable of  detecting a code, said sensor (51) being carried by the handle (11) and  electrically connected to the electronic module (53) by a cable  flexible electric which passes successively in a passage (56)  formed in the second axis (13) and in the guide rod (49), in  the axial bore (50) of the coupling rod (33) and in another  passage (58) formed in said coupling rod, then is wound  loosely around the cylindrical shank (39) of the stem  coupling (33) and finally passes through a passage (59) formed  in the first axis (24). 6. Electronic lock. according to claim 5,  characterized in that the electric cable (55) is in two parts which  are electrically connected to each other by a pair of  male and female connectors (60) or by a pair of contact pads,  a first of the two connectors or of the two contact pads being  carried by the guide rod and the second connector or contact pad  being housed in the bore (50) of the coupling rod (33) and  pushed towards the first connector or contact pad by a spring. 7. Electronic control lock according to claim 2,  characterized in that the locking member (5) is a bolt  dormant, the driven member (7) is a bit of a lock barrel  (65), and the driving member (13) is a barrel of the barrel (65), which is  rotatably mounted in said barrel, on the outside of the door (4),  axial alignment with the first axis (24), in that said first axis  is rotatably mounted in the barrel (65), on the inside of the door  (4), in that said barrel (13) has an internal end  adjacent to the bit (7) and an outer end, in that said  another hole (35) is formed axially in the internal end of the barrel  (13) and has a non-circular section shaped to receive in  drive relationship the coupling rod (33) when it is  moved from its first to its second position, and in that  the outer end of the barrel (13) has a key entry (74) at  non-circular section intended to receive a key (75) having a rod  (76) at least part of which has a non-circular section  corresponding to that of the key entry (74) of the barrel (13). 8. Electronic control lock according to claim 7,  characterized in that the coupling rod (33) has a cross section  square and in that said other hole (35) has a cross section at  the interior of each of the four branches of which one of the four  corners of the square section of the coupling rod (33) can  engage with play in the circumferential direction. 9. Electronic control lock according to claim 7 or 8,  characterized in that said input means (75, 86) comprises  a programmable memory (86) housed inside the key (75), of which  the rod (76) comprises an outer conductive metal casing  (88) forming a ground contact and a conductive metallic core  inner (89), coaxial to the outer casing (88) and insulated  electrically therefrom by an insulating material (91), said core  interior (89) forming a data line for the memory  programmable (86) and being exposed at the end of the rod (76) of the key  (75) to form a first contact terminal (92), and in that a  second contact terminal (93) is provided at the bottom of the key entry  (74) of the barrel (13) to establish electrical contact with the first  contact terminal (92) when the rod (76) of the key (75) is engaged  bottom in the key entry (74) of the barrel (13). 10. Electronic control lock according to claim 9,  characterized in that on the side of the linear actuator (36) the rod  coupling (33) has a cylindrical part which can slide  axially in a cylindrical bore (34a) of the first hollow axis  (24) and in which is formed a cylindrical cavity (90) closed by  a plug (95) fixed to the movable element (38) of the linear actuator  (36), the cylindrical part (39) of the coupling rod (33)  comprising in its peripheral wall at least one slot  longitudinal (96) which communicates with said cylindrical cavity (90),  in that at least one contact carrier (97) of insulating material is attached to the  first axis (24) in the cylindrical bore (34a) thereof and extends  radially through said longitudinal slot (96) into said  cylindrical cavity (90), in that on the side of the barrel (13) the rod  coupling (33) has an axial bore (50) which opens out  in said cylindrical cavity (90), in that the barrel (13) comprises,  in the center of said other hole (35), an axial cylindrical guide rod  (49) which extends into the axial bore (50) of the coupling rod  (33), in sliding contact therewith, as far as said cavity  cylindrical (90) and carries at its end a third terminal of  contact (101) which is electrically insulated from said rod  guide and which is in sliding contact with a fourth terminal of  contact (98) carried by said contact carrier (97), in that the second  and third contact terminals (93 and 101) are connected to each other  by a first electric cable (55a) passing through a passage  longitudinal (106) formed in said guide rod (49), and in that  the fourth contact terminal (98) is connected to the electronic module  (53) by a second electric cable (55b) passing through a passage  longitudinal (116, 59) formed in the first axis (24). 11. Electronic control lock according to any one of  Claims 2 to 10, characterized in that the linear actuator (36)  consists of a first electromagnet comprising a coil  which is axially aligned with the first axis (24), and a  movable frame (37, 38) which is fixed axially to the rod  coupling (33) and which slides axially in said coil  excitation from a rest position to a work position  corresponding respectively to the first and second positions of the  coupling rod (33), when said excitation coil receives a  electrical impulse. 12. Electronic control lock according to claim 11,  characterized in that the movable armature (37, 38) of the first electro  magnet (36) is biased towards its rest position by a magnet  permanent (46) and / or by a spring (47), and in that there is provided a  auxiliary electromagnet (41) whose armature (43) is movable  radially with respect to the first electromagnet (36) and is pushed  by a spring (44) in a first position in which it  maintains the movable armature (37, 38) of the first electromagnet (36)  in its rest position and in its working position when  the auxiliary electromagnet is not energized, The movable armature (43) of  the auxiliary electromagnet (41) being movable within a second  position in which it releases the movable frame (37, 38) from the first  electromagnet (36) when the auxiliary electromagnet is energized. 13. Electronic control lock according to claim 12,  characterized in that the electronic module (53) comprises a  microcontroller (108) which, when it detects the identity of said code entered  with said reference code, controls the excitation of the electromagnet  auxiliary (41) and the first electromagnet (36) in a sequence  predetermined time. 14. Electronic control lock according to claim 13,  characterized in that the power source which supplies the current  necessary for the excitation of the two electromagnets (36 and 41) includes  at least one battery (61), a capacitor (C) and a lifting device  voltage to charge the capacitor (C) to a higher voltage  to that of the battery (61). 15. Electronic control lock according to claim 14,  characterized in that the electronic module (53) further comprises  first and second electronic switch (I, and I2) connected  in series between the positive and negative terminals of the battery (61), one  said battery terminals being grounded, a third switch  electronics (I3) connected on the one hand to a junction point (109) between  the first and second electronic switches (I, and I2) through the  excitation coil of the first electromagnet (36) and on the other hand to the  ground, a fourth electronic switch (I4) connected to a  leaves at a junction point (111) between the excitation coil of the first  electromagnet (36) and the third electronic switch (I3) and  on the other hand to a first armature of the capacitor (C), the  second armature is connected to ground, and a fifth  electronic switch (Is) connected in series with the coil  excitation of the auxiliary electromagnet (41) between the first  armature of the capacitor (C) and the ground, said switches  electronic (I1 - Ig) being controlled by the microcontroller (108)  according to said predetermined time sequence, and in that said  tension raising device is formed by the first, third and  fourth electronic switches (him, I3 and I4) and by the coil  excitation of the first electromagnet (36).