EP0887496B1 - Device to remove the barring mechanism of a preset opening lock - Google Patents

Description

The present invention relates to a device for cancel, in particular in the event of a breakdown, the ban opening of a conditional opening lock.

More particularly, the invention relates to the application of this device to a so-called time lock with a high degree of security, intended to control, on specific time slots, access to high-level speakers security, such as safes or bedrooms strong for example from bank branches.

Such a device and a time lock of this type are described in patent EP 0 256 430.

A security package described in this document and incorporating this device and this lock, is shown very schematically, in Figure 1.

As described in this document and as shown in this figure, closing a PO door of a safe or any other high security enclosure (this door being seen from the inside in Figure 1), is done, generally using several PT bolts controlled by a TR linkage, this linkage can be moved, by an operator, using a VO steering wheel, from a position lock to an unlock position and Conversely.

For this purpose, the TR linkage includes a bar B which controls the movement of the bolts PT of the door PO and which is coupled to the VO steering wheel, via a wheel-rack type mechanism.

This bar B can be moved, in translation, under the action of the VO steering wheel, to order the displacement PT bolts and to ensure the operations of locking (bolts out) and unlocking (bolts retracted).

To prevent the PO door from opening and maintain the TR linkage in the locked position when the PT bolts are in this position, this set includes a first lock S which is itself provided with a bolt PS planned to come to engage in the bar B. The bolt PS is therefore provided to block the translational movement of bar B.

This first lock S can be ordered, in the simplest version by a key, or even by more sophisticated means, such as a magnetic card, a smart card or a functioning electronic system with a code or other type of access authorization.

However, in order to raise the level of security and to prevent any fraudulent use of this first lock S, we associate a second lock SH so-called time lock.

This SH time lock also has its own PV bolt, which is more generally called bolt or locking block and which is intended to be placed on the way to bar B, in order to hinder his movement to its unlocked position. In the high position of the PV block shown in FIG. 1, the bar B therefore abuts by its rear end against the PV block.

The PV locking block is associated, in this time lock SH, to an EM motor assembly, comprising including an electromagnetic motor and a cam and lever (not shown).

This EM motor assembly can be controlled by EL electronic means associated with peripherals PA display and ED data input used for programming of time slots. PA devices and ED are constituted, in this example, by a display numeric and by a keyboard. EL electronic means have a microprocessor MP and a memory MM of the type RAM / ROM, the MP microprocessor providing, from the program stored in the MM memory, signals commands that pass through an AMP amplifier, to the EM motor assembly.

Thus, by this provision, it is possible to program time periods during which the PV locking block will prevent sliding from bar B, even if the opening of the first lock S is ordered by a valid authorization signal, that is to say by a recognized key or opening code as such.

Therefore, due to the use of this SH time lock, double the security, by prohibiting, even authorized personnel in possession of a key or code recognized as valid, any opening of the safe or of the enclosure, on one or more time slots judiciously selected.

However, if after such a period called "prohibition of opening", the prohibition order is unfortunately maintained by a dysfunction mechanical or electronic time lock, the door opening is, in this case, completely condemned, since the PV locking block of the time lock SH physically hinders movement of bar B of the linkage.

Now, this time lock SH and this block of PV locks are designed and positioned on the PO door to be inviolable, therefore inaccessible and indestructible, which prevents, a priori, also in this exceptional situation, all access and all repair even by security teams.

These malfunctions can be caused either by a failure, either by an electronics failure and / or the motor driving the locking block.

Therefore, such malfunctions require, to have access to the protected enclosure, that we destroy the enclosure by practicing, for example, a breach in the wall or in a wall of the enclosure, or in destroying the door.

In any case, it is necessary to damage the security enclosure, which is excessively expensive.

In addition, to be able to practice this breach or destroy the door, you have to call in services and very specialized tools, which is also expensive.

In addition, these operations may require several hours or even days to be completed. during this time it is unfortunately not possible to access inside the enclosure to satisfy customers, especially in the case of a bank.

Then and above all, once the enclosure has been damaged, it must be repaired, so that this speaker cannot be used as such for a certain period of time of time, that is, for several days or Several weeks. This situation can be very harmful in many applications.

For these reasons, it has been proposed to combine these time locks, a device allowing, by a special procedure, to inhibit, in the event of a breakdown, the operating the time lock, to authorize the displacement of bar B of the TR linkage and allow the PO door to open.

This type of device therefore makes it possible to cancel the opening ban imposed by the time lock SH.

A device of this type is also described in the EP 0 256 430 mentioned above.

In order to better understand the structure of this device, the latter was also represented in a very schematic in Figures 2a to 2f, in its positions operating characteristics.

This device D comprises a lever 1 which can pivot and which is intended to cooperate with a spout 2 mounted on a barrel 4. The lever 1 can, in addition, cooperate with a stud G secured to the PV locking block which, in the position shown in Figure 2a, is in position bar B blocking high. Note that the block of PV lock is held in this position by a compression spring R which is supported by a rod TG driven by the EM motor assembly (Figure 1).

In this normal operating position, the PV locking block prevents the bar from moving B, so that the enclosure door cannot be opened.

As seen in Figure 2b, the PV block can be brought down, by lowering the TG rod (arrow F1), under the action of the EM motor assembly, to release the path of the bar B and allow the opening of the door. In this low position of the PV block, the bar B can be moved back (arrow F2), in order to release the bolts PT of linkage TR.

We therefore see that in this operating mode, the lever 1 and barrel 4 are not operational and they do not affect the normal operation of the lock SH timetable.

The barrel 4 carries a pin 6 which is associated with another prestressed compression spring, not represented; this set being housed in a blind hole in the barrel 4.

In the event of a fault, a CE electronic circuit which is associated with a set of sensors, detects the failure and controls a second motor assembly, not shown, which drives the barrel 4 in rotation (FIG. 2c, arrow F3), via a gear train and a spring (not shown), this spring being designed to store the drive energy provided by this motor assembly.

If the bar B is in the abutment position against the PV locking block (fig. 2c), the spout 2 then abuts against the bar B, the spring which drives the barrel 4 then absorbing the energy drive provided by the engine assembly corresponding.

If after opening the lock S, the operator notes the malfunction of the SH time lock, it moves bar B to its locked position, via the control wheel (fig. 2d, arrow F4). Barrel 4 can then continue its rotation (arrow F5) to come stop against a fixed stop 8.

In this position, the pin 6 comes to engage in a recess 9 formed in the lever 1, which connects mechanically and irreversibly the barrel 4 at lever 1.

The spout 2 is now in this position on the way to bar B, the operator by reversing this bar (Figures 2e and 2f, arrow F6) pushes the spout 2 which causes the barrel 4 to rotate.

Thus, barrel 4 which is now linked in rotation with lever 1 via engagement of pin 6 in the recess 9, rotate the lever 1 which comes push the stud G of the PV locking block (fig. 2e), against the effect of the spring R. Indeed, we understands that due to the state of dysfunction, the rod TG remained in the high position and continues to bias the spring R against the PV locking block. The lever 1 therefore comes to oppose the pushing effect of the spring R, which compresses.

So, by continuing to move the bar B towards its unlocking position, the operator can cause the release of the PV block by completely retracting it, thanks lever 1 (fig. 2f, arrow F7). The door can therefore be opened.

This device achieves the result wish.

However, it has several drawbacks.

Indeed, to put the time lock again SH and device D in service, it is necessary to separate the barrel 4 of lever 1 and return lever 1 to its initial rest position. This operation requires to open the lock and requires the intervention of a specialist, intervention which may require several days. Meanwhile, the time lock is off service.

Furthermore, since it is the movement of the bar B which makes it possible to "force" the opening of the lock, separate batches of suitable locks must be provided, either to left-opening doors (configuration shown in Figures 2a to 2f), either at doors to right opening (symmetrical configuration, no shown). This condition therefore requires manufacturing, assembly, management and logistics of two types of lock, which increases the cost price of locks.

In addition, these locks must be subject to a very precise adjustment during assembly, since bar B must imperatively come into contact with spout 2, to ensure correct operation of the emergency opening.

Furthermore, the parts which constitute the D cancellation device must be of high quality. They must indeed be able to overcome the effort compression spring R which tends to hold the PV locking block in its position high.

Therefore, this device implements a number important parts that are difficult to produce and adjust, so it is relatively uneconomical.

The object of the present invention is to remedy these disadvantages in providing a device that can be simply restored to working order and reset quickly, without the intervention of a specialist, and without opening or dismantling the lock.

The present invention also aims to provide a device with a high level of reliability, of design simple and inexpensive, allowing the time lock which is equipped with it to be mounted indifferently on doors with right openings or left openings.

• des moyens moteur,
• un organe de transmission,
• un bloc de verrouillage lié aux moyens moteur via l'organe de transmission et pouvant être actionné par les moyens moteur pour occuper une position active dans laquelle ce bloc s'oppose au déplacement d'une barre, et une position inactive dans laquelle ledit bloc autorise le déplacement de cette barre, ce dispositif étant caractérisé en ce qu'il comprend des moyens de désactivation prévus pour rendre libre l'organe de transmission et pour autoriser le dégagement du bloc de verrouillage en dehors de sa position active.

To this end, the subject of the invention is a device for canceling, in particular in the event of a breakdown, the prohibition on opening a lock with conditional opening, this device comprising:

• motor means,
• a transmission organ,
• a locking block linked to the motor means via the transmission member and capable of being actuated by the motor means to occupy an active position in which this block is opposed to the movement of a bar, and an inactive position in which said block authorizes the movement of this bar, this device being characterized in that it comprises deactivation means provided for making the transmission member free and for authorizing the release of the locking block outside of its active position.

• la figure 1 est une représentation très schématique d'un ensemble de sécurité classique auquel peut être incorporé un dispositif d'annulation et une serrure à ouverture conditionnelle, selon l'invention;
• les figures 2a à 2f représentent dans différents stades de fonctionnement un dispositif d'annulation de structure classique, et qui a été décrit de façon détaillée ci-avant;
• la figure 3a est une vue de face d'un dispositif selon l'invention, incorporé dans le bâti d'une serrure horaire et représenté dans une première position caractéristique de fonctionnement;
• la figure 3b est une vue de derrière du dispositif de la figure 3a, montré dans la même position;
• la figure 3c est une vue en coupe du dispositif selon l'invention faite selon la ligne C-C de la figure 3b;
• la figure 3d est une vue en coupe du dispositif selon l'invention faite selon la ligne D-D de la figure 3b;
• les figures 4a à 4c, 5a à 5c et 6a à 6c sont des vues similaires aux figures 3a à 3c, mais représentant le dispositif selon l'invention dans d'autres positions caractéristiques de fonctionnement; et
• la figure 4d est une vue en perspective d'un ressort pince équipant le dispositif selon l'invention.

However, other characteristics and advantages of the invention will appear on reading the detailed description which follows, given with reference to the appended drawings which are given solely by way of example, and in which:

• Figure 1 is a very schematic representation of a conventional security assembly which can be incorporated a cancellation device and a lock with conditional opening, according to the invention;
• FIGS. 2a to 2f show in different stages of operation a device for canceling a conventional structure, and which has been described in detail above;
• Figure 3a is a front view of a device according to the invention, incorporated in the frame of a time lock and shown in a first characteristic operating position;
• Figure 3b is a rear view of the device of Figure 3a, shown in the same position;
• Figure 3c is a sectional view of the device according to the invention taken along the line CC of Figure 3b;
• Figure 3d is a sectional view of the device according to the invention made along the line DD of Figure 3b;
• Figures 4a to 4c, 5a to 5c and 6a to 6c are views similar to Figures 3a to 3c, but showing the device according to the invention in other characteristic operating positions; and
• Figure 4d is a perspective view of a clamp spring fitted to the device according to the invention.

Referring now to FIGS. 3a to 3d, we will describe below an embodiment of a device according to the invention, identified here by the general reference 10.

The device 10 according to the invention is mounted in a frame 12 of a SHI lock which is intended to equip a safety assembly, such as that shown in the figure 1.

As such, the following description will be understood. that the SHI lock being equipped with the device 10 found modified and very simplified.

Thus, the SHI lock according to the invention is intended to equip a security system of the same type as that which has been described above.

The SHI lock according to the invention is therefore also intended to block the movement of a bar B towards its unlock position, for example in ranges fixed times, in which it was decided to prohibit the opening of the PO door (figure 1), in the same conditions as those explained above.

The invention is therefore described here in its application to a time lock, since the opening conditions and closing the door are fixed according to time range determined and programmed.

Note that this application is not given here as an example and the invention is not limited to this application. The invention may also apply to other types of lock for which the opening and closing conditions are linked to other parameters than time or are related, not only to time parameters, but also to additional parameters.

For this reason, the SHI lock is qualified here generically from opening lock "Conditional".

However, applying to a time lock constitutes a particular and advantageous application which will be the preferred embodiment to which it will be refers in this description.

It is therefore understood that the device 10 makes it possible to lift and cancel an opening ban that has been imposed by this conditional opening lock. The device 10. will be called "cancellation" device.

The SHI lock has a PVI locking block which, in this example, is a shape block rectangular that can slide between two positions high and low characteristics respectively, translating in a guide 14, formed of two walls parallels 16 and 18.

PVI block is mounted in guide 14 with clearances important lateral operation allowing it to slide; without friction, between its two positions.

The PVI block is shown in Figure 3a in a low position in which it does not interfere with the displacement of bar B of linkage TR (here no shown).

In this position, the PVI block rests against a stop 20 which is formed by shoulders 22 formed at the base of walls 16 and 18.

Bar B, as mentioned above, can therefore slide in a CR corridor between its positions of locking and unlocking, under the control of the VO steering wheel (Figure 1), to allow opening or closing of the PO door by the set of bolts PT of the TR linkage.

The PVI locking block is, in this example, linked by a classic joint, not shown, to a TGI rod which is itself connected by a joint 24, at a first end 26a of a transmission arm 26 (Figure 3b).

The transmission arm 26 is pivotally mounted by a second end 26b and it is coupled, in the vicinity of its first end 26a, to motor means MT.

The TGI rod and the transmission arm 26 constitute a transmission member 28 which connects, so mechanical, the PVI locking block to the motor means MT and which ensures the transmission of the energy supplied by the motor means MT to this PVI locking block.

The MV motor means include an electric motor 30 which is powered and controlled by an electronic unit ELI control unit (figure 1).

The motor 30 is mounted on a plate 32 which is arranged to be able to be fixed, for example by screws, on frame 12 of the SHI lock.

In this example, the motor 30 is mounted on the plate 32 on the side opposite to the transmission arm 26. This motor 30 comprises a motor shaft, not referenced, to the end of which is provided a drive pinion 34 (Figure 3d) which opens, relative to the plate 32, the side of the arm 26, side of the plate where all the functional components of the device, which are intended for cooperate and get in motion.

The pinion 34 meshes with a drive wheel 36 on which is formed a toothed sector in engagement with the teeth of the pinion 34. This wheel 36 is mounted free in rotation on an axis 38 (figure 3c) driven into the plate 32.

The wheel 36 further comprises a flat 40 on which rubs a blade 42 of a position sensor 44 capable of supply signals to the ELI electronic control unit representative of the angular position of the wheel 36. We will understand from the description which follows that in a mode of normal operation of the device 10 corresponding to the normal drive of the PVI block, these signals are also representative of the high and low positions of the PVI block, positions called respectively active (referenced P1, FIG. 4a) and inactive (referenced P2, Figure 3a).

The position sensor 44 is, as such, a conventional structure sensor and it will not be described here in more detail.

The wheel 36 also has a bearing 46 which extends perpendicularly from the body or board the wheel 36, and coaxially with its axis of rotation geometric X1.

This bearing 46 has an elongated cylindrical shape and it projects from the body of the wheel 36, towards the frame 12. It will be noted that the axis 38 which supports the wheel 36 in rotation passes through the body of the wheel 36 and extends over the length of the span 46. It will also be specified that the wheel 36 and the scope 46 are one piece, the scope 46 and the body of the wheel 36 coming from material and being made for example of synthetic material, such as polyoxymethylene commonly known as the abbreviation P.O.M.

A spring 48, called a clamp spring, is mounted around of the bearing 46. This spring 48 has a body 48c formed of a helical winding having in this example several turns, the body 48c being positioned freely around the bearing 46. This spring 48 also has two arms radials 50 and 51 which are provided to drive the organ transmission 28, as will be understood below.

The two arms 50 and the helical body 48c of the spring 48 are formed of the same elastic wire F. This wire can absorb bending stress and allows two arms 50 and 51 to open, in certain situations of the PVI block, then go back to their original configuration, after elastic deformation.

In accordance with the representation of the device on these figures, and the superimposed arrangement of these two arms 50 and 51, they are respectively designated arms upper and lower arm.

The upper arm 50 is linked to a first turn 48a of the body 48c (FIGS. 3c and 4d), this turn 48a resting laterally against the board of wheel 36. The last turn 48b ends in the vicinity of the free end of the scope 46. As seen in the FIG. 4d, the wire F which constitutes the spring 48 has a junction arm 53 which connects the latter turn 48b to the lower arm 51, and which brings this wire F towards the arm lower 51 extending along the body 48c.

Thus, the two arms 50 and 51 are brought back into a same plane substantially parallel to the wheel plank 36, by returning the wire F.

Note that the two arms 50 and 51 extend radially from the bearing 46, in directions substantially parallel, towards a lug 52 which projects of the board or body of the wheel 36. The lug 52 is positioned at a radial distance from the bearing 46 and from the axis of rotation X1 of said wheel. Ergot 52 can therefore provide a couple of training to the body transmission 28.

The two arms 50 and 51 of the spring 48 extend from on either side of this lug 52 and imprison it.

Therefore, when the wheel 36 is driven in rotation by the motor 30, via the pinion 34, it drives with it the spring 48 and more particularly (in normal operation) its arms 50 and 51, the lug 52 pushing up or down, clockwise or counterclockwise, either arm 50 and 51, according to the direction of rotation printed on said wheel 36 by the motor 30.

Thus, the rotation of the wheel 36 solicits arms 50 and 51 and causes them to move angular which, in normal operation, are simultaneous.

The device 10 according to the invention further comprises a protruding finger 54 (see FIG. 6b), parallel to lug 52 and parallel to the axis of rotation X1 of the wheel 36.

The two arms 50 and 51 of the spring 48 extend from on either side of finger 54 and enclose and imprison also this finger 54 just like the lug 52. By Consequently, any rotational movement of the wheel 36 in one direction or another pushes the finger 54 towards the up or down, via lug 52 and via arms 50 and 51 of the spring 48. The rotation of the wheel 36 therefore has function of causing, in normal operating mode, an upward or downward movement of finger 54, but with interposition at this level of an elastic organ of motion transmission formed in this example by the clamp spring 48.

The finger 54 is integral with a swing arm 56 which has a general shape corresponding substantially to that of transmission arm 26 and which is mounted so adjacent and juxtaposed to this transmission member.

The swing arm 56, which is seen more clearly detailed in Figure 6b, is formed as the arm of transmission 26 of a low stamped metal plate thickness having in plan a form of "J". The elbows of these two juxtaposed arms 26 and 56 allow these arms, when in the high position, to come to the neighborhood wheel 36 (see Figures 4b, 5b and 6b) and wear their free ends above the wheel 36.

This arrangement provides a compact arrangement which provides range of motion to bring the block B in its two extreme positions P1 and P2.

The finger 54 is formed at a first free end 56a of the swing arm 56 and, in this example, it comes advantageously of material with the arm 56.

At its second end 56b, the swinging arm 56 is mounted freely in rotation around a bearing 58 which makes projection of the plate 32 and which is formed by a socket chased into this deck. The swing arm 56 can therefore pivot freely around an axis of rotation X2 (figure 3c) which is parallel to the axis of rotation X1 of the wheel 36.

Coaxial with this axis X2, is mounted a second electric motor 60 (figure 3d) which is also controlled by the ELI electronic control unit. This engine 60 is mounted on the plate 32 on the same side as the motor 30. This motor 60 is mechanically linked in rotation to a shaft 62 which is guided in the socket 58 and which is positioned coaxially with the axis of rotation X2.

As can be seen in the figures, the two axes of rotation X1 and X2 are positioned in a horizontal plane PH which here corresponds to the plane of the section C-C and which is perpendicular to the direction of movement of the PVI block.

A 64 headed tenon is chased into the tree 62. The pin 64 forms an axis of rotation X3, this tenon 64 and this axis X3 being positioned on the shaft 62 so that the axis X3 is laterally offset from the axis of rotation X2. We will notice that in this example, and in its two characteristic positions (Figures 3b, 4b, 5b and 6b), the X3 axis also extends in the PH plane.

Thus, it will be understood that the post 64 is offset by relative to the axis of rotation of the motor 60.

As can be seen in FIG. 3c, the pin 64 supports and guides in rotation the end 26b of the transmission arm 26. The transmission arm 26 can therefore pivot freely around this pin 64 and around the axis of rotation X3 which constitutes the axis of rotation of the transmission arm 26 and which is therefore distinct, but close to the axis of rotation X2 of the oscillating arm 56. In this application, the axis X2 is offset in the plane PH by 1 mm (10 ^-3 Meter) of the X3 axis.

Thus, thanks to this construction, the end 26b of the transmission arm 26 and the axis of rotation X3 of this arm can be moved laterally left or right, to occupy a first position known as engagement shown more particularly in Figures 3a, 3b and 4a, 4b or a second so-called trigger position shown more particularly in Figures 5a, 5b and 6a, 6b.

This displacement of the end 26b of the arm of transmission 26 and its axis of rotation X3 is controlled by the electric motor 60, thanks to the rotation of its shaft 62. The tenon 64 therefore constitutes, in this arrangement, an eccentric ensuring release functions and clutch of the transmission member 28, functions that will be explained in more detail below.

As seen more particularly in the figure 6b, the transmission arm 26 has a notch or straight groove 66 which is arranged (FIG. 3a) for receive finger 54.

The notch 66 is formed in the end 26a of the arm 26 and it opens towards the opposite end 26b of this arm 26 and towards the finger 54. The notch or groove 66 extends in a direction substantially parallel to the PH plane.

The notch 66 can therefore slide with play on the finger 54, in the longitudinal direction, i.e. from the left to right and vice versa. We understand that sliding is controlled by the eccentric 64 during the rotation of the motor shaft 60, which can pull or push the transmission arm 26, either to bring the notch 66 on the finger 54 and allow their engagement (drawn position, figures 3a to 3d and 4a to 4c), either for move this notch 66 away from finger 54 and allow their disengagement (pushed position, Figures 5a to 5c and 6a to 6c).

We understand that the mechanical engagement of the finger 54 in the notch 66 ensures the training of the arm of transmission 26 by the swing arm 56 which constitutes a driver of the transmission member 28.

The device 10 according to the invention comprises at least two characteristic functional units, namely, on the one hand, the MV motor means, and, on the other hand, the transmission member 28.

In this embodiment, the motor means MT consist of the motor 30, the pinion 34, the wheel 36, the lug 52, the spring 48 and its two arms 50 and 51; the swing arm 56 and its finger 54 which also have a motor function being coupled to the MV motor means via the spring 48.

The transmission member 28 is constituted in turn of the TGI rod, the articulation 24 and the arm of transmission 26. The notch 66 is therefore provided on the transmission member 28. It is therefore understood that the block PVI locking device is linked to the MV motor means by via the transmission member 28, via the spring 48 which is interposed between these motor means MT and this transmission member 28.

The device 10 according to the invention is shown in Figures 3a to 3d and 4a to 4c, in a first characteristic configuration, in which the notch 66 is engaged on finger 54. In this configuration, the shaft 62 is kept locked in an angular position determined by a stop not shown, and the tenon or eccentric 64 is kept in its right position called interlocking (Figures 3a, 3b, 4a and 4b), the arm transmission 26 being maintained by this eccentric in pulled position.

When the ELI electronic unit controls the rotation of the motor 30, the wheel 36 rotates in the direction clockwise and the lower arm 51 of the spring 48 push the finger 54 which moves the swing arm 56, the swing arm transmission 26 and therefore the entire transmission member 28 upwards, to mount the locking block in its active position P1 (Figures 4a to 4c) where it can oppose when bar B is moved in the corridor CR.

The sensor 44 informs the electronic unit ELI which deduces that the PVI block is in its position active.

When the time corresponding to the ban the SHI lock has opened, the unit electronic ELI controls the rotation of the motor 36 in direction reverse which brings back by the same means the PVI block towards bottom, in inactive position P2, the block coming to rest in stop against stop 20.

Sensor 44 informs the unit again ELI electronics which infers that the PVI block is located in its inactive position and that bar B can be moved to the CR corridor to open the door.

The operator can therefore from this moment open the PO door (Figure 1) provided of course that has the necessary authorization (s) to order opening the lock S.

If the ELI electronic unit causes at the start of a time range the rise of the PVI block while the bar is found at the same time in the corridor CR to the right of the guide 14 (the door is therefore not yet locked), the block PVI will come up against bar B. Motor 30 will however continue its rotation to finish its course of control and the spring 48 will open by spacing elastic of its two arms 50 and 51. Information ordering the displacement of the PVI block towards its position active P1 is "saved" by spring 48. The PVI block will finish its race up to its active position P1, under the impulse of the spring 48, when the bar B has been translated to the right, to its position of locking.

The same type of procedure is executed if the bar B clamps the PVI block in the high position, while the motor 30 rotated wheel 36 counterclockwise to allow the PVI block to return to the bottom.

The arms 50 and 51 of the spring 48 also go move away while the wheel 36 will end up under the impulse of the motor 30. When the bar B is moved to the right, towards its locked position, the block PVI will be brought down by the action of spring 48 and, in this example, also by the combined action of the gravity.

Thus, we see that in this arrangement the means MV motor are linked to the PVI locking block by through the spring 48 which forms a connection elastic between the motor means MT and the transmission 28.

If the sensor 44 informs the ELI electronic unit that PVI locking block is in active position P1 (Figures 4a to 4c), while the time slot corresponding to the prohibition on opening the lock is exceeded, the ELI electronic unit or another agent then notes that there is a breakdown or malfunction.

Under these conditions, the electronic control unit ELI orders the rotation of the motor 60 which will control the displacement of the eccentric 64. This eccentric 64 goes move the axis of rotation X3 of the transmission arm 26 to the left and it will, therefore, push the arm transmission 26 forward. This configuration is shown in Figure 5b to 5c.

It will be noted that the notch 66 is provided, thanks to an appropriate length of its upper edge 66a, of so that when the arm 26 has run its course trigger, finger 54 comes completely out of the notch 66. There is therefore, via the control of the motor 60, a disengagement of the transmission member 28 with respect to MV motor means.

Therefore, and as we see more particularly in Figure 6b, the transmission member 28 and in particular the transmission arm 26 are then released from their coupling with the motor means MT and allow, in this example by simple effect of the gravity, the return of the PVI locking block in its inactive position P2.

Bar B can be moved and door PO can therefore be open (Figure 6a).

Therefore, we understand from this description that we have provided by this arrangement, deactivation means which are arranged to make the transmission member 28 free in the event of a malfunction, these means authorizing in this exceptional situation the release of the block of PVI lockout outside of its active position P1.

The transmission member 28 is therefore rendered inoperative since, suddenly, it no longer has a mechanical connection with the MV motor means which no longer exercise any constraint neither on this organ, nor on the PVI block.

Also, the deactivation means are provided for purely and simply break the mechanical coupling between the motor means MT and the PVI locking block, by causing the release of the notch 66 and the finger 54, allowing the PVI locking block to return freely to its inactive position P2, in this example by the action of gravity alone. We see that the organ 28 then pivots freely on the plate 32.

More specifically, the means of deactivation are constituted by declutching means which can decoupled, on command, the transmission member 28 from MV motor means, these means being constituted by notch 66 and finger 54 and by the arrangement of one on the transmission member 28 and by the coupling of the other with the MV motor means.

Furthermore, it will be understood that these means of declutching further comprise triggering means which consist of the eccentric 64 and which act on the engagement of the finger 54 in the notch 66 for decouple the transmission member 28 from the motor means MT. More particularly, these declutching means cause the notch 66 to move relative to the finger 54, the trigger means acting openly on the transmission member 28, by moving it by relative to finger 54, that is to say relative to arm swinging or driving 56.

To allow the device to be put back into service 10 and the SHI lock and to reset this device, we controls, via the ELI electronic unit, the rotation of the motor 30 and in particular the rotation of the wheel 36 in counterclockwise. The swinging or driving arm 56 is lowered until finger 54 abuts against a lower edge 66b of the notch 66, edge which is length greater than that of the upper edge 66a.

Finger 54 is in position to be able to be again engaged in notch 66. At this time, we drives the motor 60 to pull the transmission arm 26 and to reengage the notch 66 on the finger 54. The device 10 is therefore reset and the lock can operate without having been opened. Note that these operations carried out via electromechanical means, they can be fully controlled by the unit ELI electronics which can be managed remotely, for example by telephone communication, from a monitoring center.

Also and advantageously, the invention comprises therefore activation means provided to make, on control, the transmission member 28 operating again, after he had previously been released by the deactivation means, in order to allow the block to PVI lock to re-occupy its active position P1, by being actuated by the motor means MT. These means are planned to restore the mechanical coupling between the motor means MT and the PVI locking block, after this coupling has been broken by the deactivation means. We will specify also that the activation means are constituted by clutch means which are capable of coupling, on control, the transmission member 28 and the motor means MT, after rupture of said coupling, these means clutch formed by the notch 66 and the finger 54 which can be brought back into the notch 66 by means which can in particular re-engage the finger 54 in said notch 66 in order to couple again the transmission member 28 and the motor means MT.

Also, the engagement means are provided for act on the transmission member 28, by moving it by with respect to finger 54, these engagement means being constituted by eccentric 64 and the system drive 60 which, by rotating the eccentric, causes the displacement of the transmission member 28 to again engage the notch 66 on the finger 54.

We understand from what has just been described that in this arrangement the cancellation device 10 and the means MV motor which normally ensures the rise and lowering of the PVI block, are functionally associated and structurally, by being mounted on the same plate. More particularly, the means of deactivation and of activation, the declutching means and the means clutch and the triggering means and are integrated in the same block, i.e. on the turntable.

Claims (25)

1. Device for lifting, in particular in the event of a breakdown or failure, the ban on the opening of a conditional opening locking system, this device including:

   driving means (MT),

   a transmission member (28),

   a blocking member (PVI) connected to the driving means (MT) via the transmission member (28) and able to be actuated by the driving means (MT) to occupy an active position (P1) in which said member opposes the movement of a bar (B), and an inactive position (P2) in which said member authorises the movement thereof, said device being characterised in that it includes de-activation means (54, 64, 66) provided for freeing the transmission member (28) and authorising the release of the blocking member (PVI) from its active position (P1).
2. Device according to claim 1, characterised in that the de-activation means (54, 64, 66) are provided for interrupting the mechanical coupling between the driving means (MT) and the blocking member (PVI).
3. Device according to claim 1 or 2, characterised in that the de-activation means (54, 64, 66) are provided for allowing the blocking member (PVI) to return freely to its inactive position (P2) by the action of gravity.
4. Device according to any of claims 1 to 3, characterised in that the de-activation means (54, 64, 66) include disengaging means provided for uncoupling, on demand, the transmission member (28) from the driving means (MT).
5. Device according to claim 4, characterised in that the disengaging means include a notch (66) and a finger (54) one of which is provided on the transmission member (28) while the other is coupled to the driving means (MT), the finger (54) being engaged in the notch (66) for driving the transmission member (28) by the driving means (MT).
6. Device according to claim 5, characterised in that the disengaging means further include triggering means (64) acting on the engagement of the finger (54) in the notch (66), these means (64) being provided for interrupting the engagement of the finger (54) in the notch (66) and for uncoupling the transmission member (28) from the driving means (MT).
7. Device according to claim 6, characterised in that the disengaging means (64) are provided for causing the movement of the notch (66) with respect to the finger (54).
8. Device according to any of claims 5 to 7, characterised in that the notch (66) is arranged on the transmission member (28).
9. Device according to any of claims 6 to 8, characterised in that the disengaging means (64) are provided for acting on the transmission member (28) by moving it with respect to the finger (54).
10. Device according to any of claims 6 to 9, characterised in that the disengaging means (64) are formed by an eccentric member which has an axis (X3) with respect to which the transmission member (28) is rotatably mounted.
11. Device according to claim 10, characterised in that said eccentric member is coupled to a driving system (60), which, by rotating the eccentric member, moves the position of the axis and causes the movement of the transmission member (28) to release the notch (66) from the finger (54).
12. Device according to claim 11, characterised in that said driving system (60) is formed by an electric motor.
13. Device according to any of the preceding claims, characterised in that it further includes activation means (54, 64, 66, MT) provided for making the transmission member (28) operative, on demand, after it has been freed by the de-activation means (54, 64, 66), in order to allow the blocking member (PVI) to occupy its active position (P1) again, by being actuated by the driving means (MT).
14. Device according to claims 2 and 13, characterised in that the activation means (54, 64, 66, MT) are provided for re-establishing the mechanical coupling between the driving means (MT) and the blocking member (PVI), after said coupling has been interrupted by the de-activation means (54, 64, 66).
15. Device according to claims 4 and 14, characterised in that the activation means (54, 64, 66, MT) include engaging means provided for coupling, on demand, the transmission member (28) and the driving means (MT), after said coupling has been interrupted.
16. Device according to claims 5 and 15, characterised in that the engaging means are formed by the notch (66) and the finger (54) which can be brought back into the notch (66) by the engaging means (64) able to re-engage said finger (54) in said notch (66) in order to couple the transmission member (28) and the driving means (MT) again.
17. Device according to claim 16, characterised in that the engaging means (64) are provided for acting on the transmission member (28), by moving it with respect to the finger (54).
18. Device according to claims 11 and 16, characterised in that the engaging means (64) are formed by the eccentric member and the driving system (60) which, by rotating the eccentric member, causes the movement of the transmission member (28) to re-engage the notch (66) on the finger (54).
19. Device according to any of the preceding claims, characterised in that the driving means (MT) are connected to the blocking member (PVI) via a spring (48) assuring an elastic connection between the driving means (MT) and the transmission member (28).
20. Device according to claim 19, characterised in that the spring (48) is formed by a helical spring positioned around a sleeve (46) of the driving means (MT) and including two radial arms (50, 51) provided for driving the transmission member (28).
21. Device according to claims 5 and 20, characterised in that the arms of the spring (48) confine the finger (54).
22. Device according to any of claims 19 to 21, characterised in that the driving means (MT) include a catch (52) allowing the spring (48) to be driven in rotation by the driving means (MT).
23. Device according to claim 10, characterised in that it includes an oscillating arm (56) rotatably mounted and carrying the finger (54), said arm (56) being mounted adjacent to the transmission member (28).
24. Device according to any of the preceding claims, characterised in that it includes a stop (20) which is provided for limiting the movement of the blocking member (PVI) in its inactive position (P2).
25. Application of the device according to any of the preceding claims to a conditional opening locking system.

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