ELECTROMECHANICAL DEVICE FOR OPERATING A LOCK WITH OFFSET OPERATING BUTTON

Description

Technical field of the invention

[0001] The present invention relates to an electromechanical lock actuating device intended to be mounted on a face of a leaf equipped with a lock, the electromechanical lock actuating device comprising: a rotary coupling mechanism capable of being integral in rotation with a rotor of a lock cylinder of the lock; an actuator comprising an electric motor, adapted to electrically drive the rotor of the lock cylinder in rotation when the rotor is coupled in rotation to the coupling mechanism; a disengageable clutch mechanism interposed between the coupling mechanism and the actuator and varying between a disengaged configuration and at least one engaged configuration; a rotary operating button adapted for manual grip and making it possible to manually drive the rotor of the lock cylinder in rotation when the rotor is coupled in rotation to the coupling mechanism.

[0002] The invention also relates to a closing system for a leaf, comprising on the one hand a lock comprising a lock cylinder having a stator mounted on the leaf so as to pass through its thickness and a rotor mounted to rotate relative to the stator and the rotation of which actuates in translation at least one deadbolt, and at least one handle mounted to pivot on the leaf and actuating at least one spring bolt, on the other hand an electromechanical lock actuating device as mentioned above.

[0003] The invention applies in particular to the fields of locks which comprise a lock cylinder with, on the outside, an external lock entry allowing the insertion of a key and, on the inside, either an internal lock entry allowing the insertion of a key or a manual button. Such a key and / or the manual button make it possible to rotate the rotor of the lock cylinder in order to control the movement of the spring bolt and / or the deadbolt in order to open or close the leaf and / or to lock or unlock the lock.

[0004] The cooperation between the rotor of the lock cylinder and the coupling mechanism internal to the electromechanical lock actuating device can be achieved by placing one of the keys accepted by the lock cylinder on the inside, this key then being engaged with the coupling mechanism to be integral in rotation with each other, or by the permanent presence of a coupling member also called "tail", integral with the rotor of the lock cylinder and initially intended for the placement of a manual button, this coupling member then being engaged with the coupling mechanism internal to the electromechanical actuating device to be integral in rotation with each other.

[0005] The lock cylinder may be equipped with a single clutch or a double clutch to possibly make it possible to operate an external key even if a key is present on the internal side. Generally speaking, the lock with which the electromechanical lock operating device is intended to cooperate for its motorized operation does not provide any limitation in itself and may be any. For example, it may be a lock where the rotor is shaped for an angular travel limited to approximately a quarter of a turn, as is the case for example on the North American market, or a lock where the rotor is intended for an angular travel of several turns, as is the case for example on the European market. State of the art

[0006] Conventionally, a lock, whether of the single clutch or double clutch type, comprises a lock cylinder having a stator mounted on the leaf so as to pass through its thickness and a rotor rotatably mounted in the stator. The rotational actuation of the rotor of the lock cylinder actuates in translation a deadbolt, the latter being capable of locking the lock by insertion into a strike plate secured to a fixed frame or jamb on which the leaf is mounted. The lock may also comprise a handle pivotally mounted on the leaf to actuate at least one spring bolt. The rotational actuation of the rotor of the lock cylinder may also actuate the spring bolt.

[0007] The lock generally includes a keyhole allowing the insertion of a key from the outside and can be operated by a knob or by a key from the inside.

[0008] Electromechanical devices already exist for motorized operation of such locks, for example like the solution described in document EP2762661A1. These electromechanical lock operation devices are intended to be fixed on the inside of the leaf in a manner cooperating with the lock to be motorized for the purpose of locking and unlocking it.

[0009] Document WO2016170033A2, which is explicitly intended to cooperate with an electromechanical device according to document EP2762661 A1, discloses a device allowing the mounting of a coupling mechanism and a rotary operating button respectively around a first axis of rotation and a second axis of rotation which are distinct and not coincident.

[0010] Electromechanical lock actuating devices generally comprise a source of electrical energy for powering an actuator comprising an electric motor and an electronic control unit capable of communicating with the outside world, in particular for the purpose of receiving external instructions and transmitting outgoing information. The control unit controls the actuator based on these instructions and this information and as a function of any sensors integrated into the electromechanical lock actuating device, for example force, position, speed or presence sensors.

[0011] They also generally contain a coupling mechanism intended to be driven in rotation by the electric motor and to be made integral in rotation with the rotor of the lock cylinder of the lock to be motorized. The interface between the rotor of the lock cylinder and the coupling mechanism can be made by means of a key inserted into a lock entry of the lock on the interior side or by the coupling member already mentioned.

[0012] The electromechanical lock actuation devices also comprise an operating button adapted for manual input in order to be able to rotate the rotor of the lock cylinder. For ease of installation and reliability thanks to direct installation, the operating button is axially mounted so as to rotate with the rotor of the lock cylinder, in particular via the coupling member. These arrangements are present in the solution described in the prior art document mentioned above.

[0013] One of the difficulties is to achieve that the operating button can be operated independently of the connection with the actuator. Conventionally, a disengageable clutch mechanism is interposed between the coupling mechanism and the actuator, this mechanism varying between a disengaged configuration and at least one engaged configuration. The disengaged configuration is adopted automatically or by a pilot adapted at the moment when the possibility of manual actuation of the operating button must be offered, as well as the possibility of actuation of the lock by a key from the outside. On the other hand, the engaged configuration is adopted when the drive of the rotor of the lock cylinder of the lock by the actuator is desired and authorized.For example, such a disengageable clutch mechanism can operate by a friction principle as is the case in document FR3028282A1 or according to a principle of at least one toothed wheel movable by mounting on a tilting support, as is the case in the solution described in document WO2017 / 114534A1.

[0014] Many current electromechanical lock operating devices provide for the operating button to protrude from the housing which is attached to the inner face of the leaf and which contains the various components. Unfortunately, these most widespread solutions are not entirely satisfactory firstly because, due to the elongated nature of the housing in order to contain the various components and due to the presence of the operating button close to one of the edges of the housing, such electromechanical lock operating devices are relatively unsightly and unsightly. On the other hand, there is a fairly significant risk that the user will trap his fingers against the operating button when he operates the lock handle, which is obviously unacceptable and makes current solutions not very ergonomic and their security could be improved. Subject of the invention

[0015] The aim of the present invention is to propose an electromechanical lock actuating device which addresses the problems raised by the prior art presented above, in particular which is ergonomic and easy to use, which is safe and prevents injuries while improving the aesthetics of the whole.

[0016] This aim can be achieved by implementing an electromechanical lock actuating device intended to be mounted on a face of a leaf equipped with a lock according to claim 1, the electromechanical lock actuating device comprising: a rotary coupling mechanism capable of being rotationally secured to a rotor of a lock cylinder (101) of the lock; an actuator comprising an electric motor, adapted to electrically drive the rotor of the lock cylinder in rotation when the rotor is rotationally coupled to the coupling mechanism; a disengageable clutch mechanism interposed between the coupling mechanism and the actuator and varying between a disengaged configuration and at least one engaged configuration; a rotary operating button adapted for manual grip and making it possible to manually drive the rotor of the lock cylinder in rotation when the rotor is rotationally coupled to the coupling mechanism;in which the coupling mechanism and the operating button are mounted to rotate respectively around a first axis of rotation and a second axis of rotation which are distinct and non-coincident, oriented respectively in first and second main directions forming between them an angle of between 0° and 90° and in which a transmission mechanism transforming a rotational movement of the operating button into a rotational movement of the coupling mechanism is interposed between the coupling mechanism and the operating button;a mechanical torque limiting mechanism placed between the transmission mechanism and the operating button, varying between a deactivated configuration in which the operating button is rotationally coupled with the transmission mechanism and an activated configuration in which the operating button and the transmission mechanism are rotationally disengaged, the activated configuration being automatically adopted as soon as a mechanical torque having a value greater than a predetermined value for which the mechanical torque limiting mechanism is designed is applied and the deactivated configuration being automatically adopted otherwise;a determination device capable of determining the absolute angular position of the coupling mechanism within a predetermined angular travel, comprising on the one hand a part representative of the angular position of the coupling mechanism and kinematically linked to the coupling mechanism by mechanical transmission elements, on the other hand elements for detecting the position and / or the displacement of the representative part connected to an electronic processing unit adapted to determine the absolute angular position of the coupling mechanism from the position and / or the displacement of the representative part detected by the detection elements.;

[0017] Particularly preferred aspects are defined in the dependent claims.

[0018] Some preferred but not limiting aspects are as follows.

[0019] The first principal direction is parallel to the second principal direction.

[0020] The first main direction and the second main direction are offset from each other, in a plane oriented transversely to the first and second main directions, by interposing a center distance having a value between 2 and 10 cm.

[0021] The disengageable clutch mechanism comprises a driving wheel rotatably connected to an output shaft of the actuator, a driven wheel rotatably connected to the coupling mechanism, at least one satellite wheel of the driving wheel and a displacement system for positioning the satellite wheel in different positions around the shaft of the driving wheel.

[0022] The satellite wheel is mounted on a mobile support by articulation around the axis of the driving wheel.

[0023] The transmission mechanism provides a permanent, non-disengageable coupling between the coupling mechanism and the operating button as long as the mechanical torque limiting mechanism adopts its deactivated configuration.

[0024] The transmission mechanism comprises a driving wheel connected to and rotated by the operating knob and a driven wheel connected to the coupling mechanism for rotation, the driven wheel being rotated by the driving wheel.

[0025] The electromechanical lock actuating device comprises a housing provided with fixing elements intended to fix the housing on the face of the leaf, enclosing at least the transmission mechanism, the coupling mechanism, the disengageable clutch mechanism and an electrical energy storage device adapted to supply at least the actuator with electrical energy, and providing access to the operating button from outside the housing so that the operating button is placed, axially along a main axis of the electromechanical lock actuating device, between the electrical energy storage device and the coupling mechanism.

[0026] The electric motor is housed in the operating button.

[0027] The invention also relates to a closing system for a leaf, comprising on the one hand a lock comprising a lock cylinder having a stator mounted on the leaf so as to pass through its thickness and a rotor mounted to rotate relative to the stator and the rotation of which actuates in translation at least one deadbolt, and at least one handle mounted to pivot on the leaf actuating a spring bolt, on the other hand such an electromechanical lock actuating device cooperating with the lock in such a way that the coupling mechanism of the electromechanical lock actuating device is integral in rotation with the rotor of the lock cylinder of the lock, in which the coupling mechanism of the electromechanical lock actuating device is located, axially along the main axis of the electromechanical lock actuating device,between the lock handle and the operating button of the electromechanical lock operating device., Summary description of the drawings

[0028] Other aspects, aims, advantages and characteristics of the invention will appear better on reading the following detailed description of preferred embodiments thereof, given by way of non-limiting example, and made with reference to the appended drawings in which: [ FIG 1 ] is a front view of an example of an electromechanical lock actuating device according to the invention. [ FIG 2 ] is a rear perspective view of the electromechanical lock actuating device of the figure 1 . [ FIG 3 ] is a longitudinal sectional view of the electromechanical lock actuating device of the Figures 1 and 2 . [ FIG 4 ] is a longitudinal sectional view of the electromechanical lock actuating device of the figures 1 to 3in the state mounted on a door leaf. [ FIG 5 ] is a perspective view of the actuator and disengageable clutch mechanism. [ FIG 6 ] is a perspective view of the disengageable clutch mechanism and the coupling mechanism coupled to a lock cylinder. [ FIG 7 ] is a front view of the mechanical torque limiting mechanism. [ FIG 8 ] is a schematic view of the device for determining the absolute angular position of the coupling mechanism. Detailed description

[0029] On the figures 1 to 8 and in the remainder of the description, the same references represent identical or similar elements.

[0030] The electromechanical lock actuating device 10 shown is intended to be mounted on a face 201 of a leaf 200 equipped with a lock 100, for example for a door pivotally mounted on a doorframe. For example, the face 201 corresponds to a face of the leaf 200 intended to be positioned on the inside of the room closed by the leaf 200.

[0031] The lock 100 comprises, in a known manner, for example as described in document FR3028282A1, a lock cylinder 101 having a stator mounted on the leaf 200 so as to pass through its thickness and a rotor rotatably mounted in the stator. The rotational actuation of the rotor of the lock cylinder 101 actuates in translation a bit or a deadbolt, as well as possibly a closing bolt, also called an end-of-travel bolt or spring bolt (bolts not shown) capable of being retractably inserted into a strike plate secured to the frame on which the leaf 200 is mounted in order to lock or unlock the lock 100 and / or to open or close the leaf 200. The arrangement of such deadbolts and spring bolts is for example described in document FR2795120. The lock 100 may also include a handle (not shown) pivotally mounted on the leaf 200 to actuate at least the spring bolt.The lock cylinder 101 can be single clutch or double clutch.

[0032] The lock cylinder 101 comprises, on the outside, an external lock entry allowing the insertion of a key and, on the inside, either an internal lock entry allowing the insertion of a key or a coupling member 102 to a manual button. Such a key and / or the manual button make it possible to actuate in rotation the rotor of the lock cylinder 101 in order to control the movement of the spring bolt and / or the deadbolt in order to open or close the leaf 200 and / or to lock or unlock the lock 100.

[0033] It is also represented on the figure 4the closing system for the leaf 200 composed of the lock 100 and such an electromechanical lock actuating device 10 cooperating with the lock 100. The electromechanical lock actuating device 10 comprises a rotary coupling mechanism 11 capable of being integral in rotation with the rotor of the lock cylinder 101 so that the electromechanical lock actuating device 10 cooperates with the rotor of the lock cylinder 101 so as to drive it in rotation electrically in order to motorize the lock 100.

[0034] The lock 100 comprises two opposite maximum angular stops, the nature of which is not important here, to limit the movement of the rotor of the lock cylinder 101 or of the coupling mechanism 11 of the electromechanical lock actuating device 10 within a predetermined angular travel. The assembly can be configured for an angular travel limited to approximately a quarter of a turn of the rotor, as is the case for example on the North American market, or for an angular travel of several turns of the rotor, as is the case for example on the European market.

[0035] The cooperation between the rotor of the lock cylinder 101 and the coupling mechanism 11 can be achieved by placing one of the keys admitted by the lock cylinder 101 in the interior lock entry, this key then being engaged with the coupling mechanism 11 to be integral in rotation with each other.

[0036] Alternatively, as shown in the Figures 3 and 4 , the cooperation between the rotor of the lock cylinder 101 and the coupling mechanism 11 can be achieved thanks to the permanent presence of the coupling member 102 secured to the rotor of the lock cylinder 101, projecting from the interior side and initially intended (i.e. when the lock 100 is used without the electromechanical lock actuating device 10 being mounted on the leaf 200) for the installation of the manual button. The coupling member 102 is then engaged with the coupling mechanism 11 to be integral in rotation with each other.

[0037] The manner of cooperation between the coupling mechanism 11 and the coupling member 102 is not limiting in itself. It may be a direct cooperation where the coupling mechanism 11 directly engages with the coupling member 102 and vice versa. Alternatively, as shown, the cooperation between the coupling member 102 and the coupling mechanism 11 may be indirect by means of the presence of an intermediate piece 12 serving as an interface between the coupling member 102 and the coupling mechanism 11. This intermediate piece 12 may act as an adapter to adapt to different shapes of coupling members 102 that may exist.The intermediate part 12 is intended to be inserted into the coupling mechanism 11 by a relative movement along the axis of rotation of the rotor of the lock cylinder 100, the intermediate part 12 and the coupling mechanism 11 being configured so as to be integral in rotation after insertion.

[0038] The electromechanical lock actuating device 10 comprises an actuator comprising an electric motor 13, adapted to electrically drive the rotor of the lock 100 in rotation when the rotor is rotationally coupled to the coupling mechanism 11.

[0039] The electromechanical lock actuating device 10 also comprises a rotary operating button 15 adapted for manual grip and allowing the rotor of the lock cylinder 101 to be manually rotated when the rotor is rotationally coupled to the coupling mechanism 11.

[0040] In order to be able to manually actuate the rotor of the lock cylinder 101 in rotation by means of a key inserted at the external lock entry and / or by means of the operating button 15 of the electromechanical lock actuating device 10, it is necessary to decouple the rotor of the lock cylinder 101 from the actuator. The electromechanical lock actuating device 10 thus comprises a disengageable clutch mechanism 14 interposed between the coupling mechanism 11 and the actuator and varying between a disengaged configuration in which the electric motor 13 is not coupled to the coupling mechanism 11 and at least one engaged configuration in which the electric motor 13 is coupled to the coupling mechanism 11 for its rotational drive.The disengageable clutch mechanism 14 may be designed so as to be able to envisage a first engaged configuration in which the electric motor 13 is capable of driving the coupling mechanism 11 in rotation in a first direction of rotation and a second engaged configuration in which the electric motor 13 is capable of driving the coupling mechanism 11 in rotation in a second direction of rotation opposite to the first direction of rotation.

[0041] The disengageable clutch mechanism 14 may operate according to friction principles, for example by using the teachings of document FR3028282A1. Alternatively, the disengageable clutch mechanism 14 may be based on the known principle of a tilting lyre. For example, as shown, the disengageable clutch mechanism 14 may comprise a driving wheel 141 rotatably connected to an output shaft of the actuator, a driven wheel 142 rotatably connected to the coupling mechanism 11, at least one satellite wheel 144 mounted in a satellite manner to the driving wheel 141 and a movement system making it possible to position the satellite wheel 144 in different positions around the axis of the driving wheel 141, the driven wheel 142 intercepting or not the trajectory of the satellite wheel 144.

[0042] According to one embodiment, the satellite wheel 144 is mounted on a mobile support 143 by articulation around the axis of the driving wheel 141. The movement system may comprise a shaft secured to the driving wheel 141 and cooperating with the mobile support 143 to create a friction torque: this friction torque allows the shaft to drive the mobile support 143 in rotation from a position corresponding to the first engaged configuration to the second engaged configuration and vice versa. Then, once one of the engaged configurations is adopted, the mobile support 143 becomes mobile in rotation relative to the shaft which drives the driving wheel 141 in rotation, which drives the satellite wheel 144 in rotation which is itself engaged with the driven wheel 142.

[0043] In particular, the various wheels used for the disengageable clutch mechanism 14 are toothed wheels.

[0044] It is possible to provide that the disengageable clutch mechanism 14 comprises a single planetary wheel 144 serving in the first engaged configuration and the second engaged configuration. Alternatively, as shown, the disengageable clutch mechanism 14 may comprise two separate planetary wheels 144 serving respectively in the first engaged configuration and the second engaged configuration, in other words a planetary wheel 144 corresponding to a direction of rotation.

[0045] When the electric motor 13 is powered to rotate in a first direction to act on the rotor of the lock cylinder 101 via the coupling member 12, the shaft secured to the drive wheel 141, and consequently the drive wheel 141, are driven in rotation in the first direction. The drive wheel 141 meshing with the planetary wheels 144 creates on the movable support 143 a torque tending to drive the latter in rotation for its movement until one of the planetary wheels 144 comes into contact and meshes with the driven wheel 142. In this configuration, the driven wheel 142 itself secured in rotation to the coupling mechanism 11 is driven in rotation in a first direction of rotation via the drive wheel 141 and the first planetary wheel 144 then in mesh.

[0046] When the electric motor 13 is powered to rotate in a second direction to act on the rotor of the lock cylinder 101 via the coupling member 12, the shaft secured to the drive wheel 141, and consequently the drive wheel 141, are driven in rotation in the second direction. The drive wheel 141 meshing with the planetary wheels 144 creates on the movable support 143 a torque tending to drive the latter in rotation for its movement until the other of the planetary wheels 144 comes into contact and meshes with the driven wheel 142. In this configuration, the driven wheel 142 itself secured in rotation to the coupling mechanism 11 is driven in rotation in a second direction of rotation via the drive wheel 141 and the second planetary wheel 144 then in mesh.

[0047] The disengaged configuration visible on the figure 6corresponds to an intermediate position of the mobile support 143 in which neither of the two satellite wheels 144 is engaged with the driven wheel 142.

[0048] The electromechanical lock actuation device 10 comprises an electrical energy storage device 16, such as autonomous batteries, to power the actuator or even a control unit capable of communicating with the outside via communication means of the radiofrequency, Wi-Fi, Bluetooth or equivalent type, in particular for the purpose of receiving external instructions intended for the control unit and transmitting outgoing information from the control unit.The control unit controls the actuator based on these external instructions and this outgoing information and as a function of any sensors integrated into the electromechanical lock actuation device 10, for example to determine mechanical rotational torques of the rotor of the lock cylinder 101, the absolute angular position of the rotor of the lock cylinder, its rotational speed or to determine the presence of a key or any other element necessary for the operation of the locking system.

[0049] As can be seen in particular on the Figures 3 and 4, the coupling mechanism 11 is rotatably mounted about a first axis of rotation and the operating button 15 is rotatably mounted about a second axis of rotation in a general arrangement where the first axis of rotation and the second axis of rotation are distinct and not coincident with each other. The first axis of rotation and the second axis of rotation are oriented respectively in a first main direction D1 and in a second main direction D2 forming between them an angle of between 0° and 90°. Figures 3 and 4 illustrate the special non-limiting case where this angle is zero, i.e. equal to 0°, the first main direction D1 then being parallel to the second main direction D2.

[0050] The electromechanical lock actuating device 10 comprises a transmission mechanism 17 transforming a rotational movement of the operating button 15 into a rotational movement of the coupling mechanism 11 and reciprocally interposed between the coupling mechanism 11 and the operating button 15.

[0051] After mounting the electromechanical lock actuating device 10 on the leaf 200, the coupling mechanism 11 of the electromechanical lock actuating device 10 is preferably located, axially along a main axis X of the electromechanical lock actuating device 10, between the handle of the lock 100 and the operating button 15 of the electromechanical lock actuating device 10.

[0052] By virtue of the offset of the operating button 15 relative to the axis of rotation of the lock cylinder 101, in particular on the side opposite the offset present between the handle of the lock 100 and the axis of rotation of the lock cylinder 101, the electromechanical lock actuating device 10 is advantageous in terms of safety and avoids injuries. Indeed, the operating button 15 is positioned outside the trajectory of the hand grasping the handle of the lock 100 to avoid any risk of the hand being trapped between the handle and the operating button 15. Furthermore, the general aesthetics of the locking system is improved by virtue of a possible positioning of the operating button 15 substantially at mid-height of the housing 18 that the electromechanical lock actuating device 10 comprises to enclose all or part of the components of the electromechanical lock actuating device 10.

[0053] Preferably, for the above advantages, and in particular for directions D1 and D2 with parallel axes, the first main direction D1 and the second main direction D2 are offset relative to each other, in a plane P oriented transversely to the first and second main directions D1, D2, by interposition of a center distance 19 having a value between 2 and 10 cm.

[0054] The electromechanical lock actuating device 10 comprises a mechanical torque limiting mechanism 20 placed between the transmission mechanism 17 and the operating button 15. The mechanical torque limiting mechanism 20 varies between a deactivated configuration in which the operating button 15 is rotationally coupled with the transmission mechanism 17 and an activated configuration in which the operating button 15 and the transmission mechanism 17 are rotationally disengaged. The activated configuration is automatically adopted as soon as a mechanical torque having a value greater than a predetermined value for which the mechanical torque limiting mechanism 20 is designed is manually applied to the operating button 15 and the deactivated configuration is automatically adopted otherwise, that is to say as long as the mechanical torque manually applied to the operating button 15 is less than or equal to this predetermined value.

[0055] The presence of the mechanical torque limiting mechanism 20 is advantageous in order to avoid any risk of damage to the transmission mechanism 17 when very high forces are applied to the operating button 15, in particular in the event of a break-in, or in the event of seizure of the rotor of the lock cylinder 100.

[0056] According to a non-limiting embodiment, the mechanical torque limiting mechanism 20 comprises at least one radially movable latching projection 21 capable of being retractably inserted into a complementary locking notch 22 formed in the locking button 15. Each latching projection 21 is biased radially inwardly of the locking notch 22 by means of elastic means 23. When a mechanical torque is applied to the operating button 15, the locking notch 22 tends to move the latching projection 21, opposing the action of the elastic means 23. When the predetermined value is reached for the mechanical torque applied to the operating button 15, the latching projection 21 retracts and releases the locking notch 22, then allowing free rotation of the locking button 15 relative to the transmission mechanism 17. In the embodiment of realization illustrated on the figure 7, the mechanical torque limiting mechanism 20 comprises two radially opposite snap-in projections 21, cooperating with two separate locking notches 22 delimited in an internal wall of the operating button 15. The elastic means 23 are constituted by an oblong-shaped part visible on the figure 7 made of an elastically deformable material, the two snap-in projections 21 being arranged to project from the two large edges of this part. The shape and the material of the oblong part make it possible in particular to adjust the predetermined value beyond which the operating button 15 is uncoupled in rotation relative to the transmission mechanism 17.

[0057] In an alternative variant, the mechanical torque limiting mechanism 20 could be interposed between the transmission mechanism 17 and the coupling mechanism 11.

[0058] The transmission mechanism 17 ensures in particular a permanent non-disengageable coupling between the coupling mechanism 11 and the operating button 15 as long as the mechanical torque limiting mechanism 20 adopts its deactivated configuration. Thus, according to a non-limiting embodiment as illustrated in the Figures 3 and 4, the transmission mechanism 17 comprises a driving wheel 171 linked and rotated by the operating button 15 and a driven wheel 172 linked in rotation to the coupling mechanism 11. In a manner not shown, the driven wheel 172 may be in direct engagement with the driving wheel 171. Alternatively, as shown, the driven wheel 172 may be in indirect engagement with the driving wheel 171 with the interposition of at least one intermediate wheel 173. In particular, the different wheels used for the transmission mechanism 17 are toothed wheels. The number of teeth of the driving wheel 171 may be equal to that of the driven wheel 172, the transmission ratio then being equal to 1.

[0059] In the illustrated variant, for reasons of simplification of the assembly, the driven wheel 172 of the transmission mechanism 17 and the driven wheel 142 of the clutch mechanism 14 are made in the same part whose height is adapted to be able to cooperate with the intermediate wheel 173 and with the satellite wheels 144 respectively of the transmission mechanism 17 and of the clutch mechanism 14 which are generally superimposed on each other to optimize the space requirement.

[0060] The housing 18 is provided with fixing elements intended to fix the housing 18, and therefore the electromechanical lock actuating device 10, on the face 201 of the leaf 200. The housing 18 is configured to enclose, preferably in a sealed manner, at least the transmission mechanism 17, the coupling mechanism 11, the disengageable clutch mechanism 14 and the electrical energy storage device 16. The housing 18 provides access to the operating button 15 from the outside of the housing 18 so that the operating button 15 is placed, axially along the main axis X of the electromechanical lock actuating device 10, between the electrical energy storage device 16 and the coupling mechanism 11. The operating button 15 may be arranged to project relative to the housing 18 as shown in the figures.This makes it possible to improve the ease of manual entry of the operating button 15 and provides good ergonomics to the electromechanical lock actuating device 10. However, it remains possible to envisage an arrangement of the operating button 15 embedded in the housing 18 so that the operating button 18 is flush with or below the upper face of the housing 18.

[0061] In order to optimize the overall size, the electric motor 13 of the actuator is housed in the operating button 15. The driving wheel 171 of the transmission mechanism 17 housed in the internal volume delimited by the operating button 15 adopts the shape of a bell rotatingly overlapping the casing of the electric motor 13.

[0062] As shown schematically in the figure 8, the electromechanical lock actuating device 10 comprises a determination device 24 capable of determining the absolute angular position of the coupling mechanism 11 within the predetermined angular travel limited by the maximum angular stops of the lock 100 to which the coupling mechanism 11 is coupled in rotation. Indeed, for the control of the electromechanical lock actuating device 10 by the control unit, knowledge of the absolute angular position of the coupling mechanism 11 is important information. It is understood that the absolute angular position corresponds to an angular value occupied by the coupling mechanism 11 counted from the extreme angular position that it occupies when the lock 100 is in abutment against one of the maximum angular stops.For example, when the predetermined angular travel corresponds to an angular travel of several turns, the absolute angular position of the coupling mechanism 11 within the predetermined angular travel occupies a value varying with the number of turns made by the coupling mechanism 11 since the rotor of the lock cylinder 101 has come to a stop, even if the coupling mechanism 11 physically occupies the same angular position at each turn. At each turn of the coupling mechanism 11, for the same physical position of the coupling mechanism 11, the absolute angular position is incremented by 360° relative to the value at the previous turn of the coupling mechanism 11.

[0063] The determining device 24 capable of determining the absolute angular position of the coupling mechanism 11 comprises on the one hand a representative part 25 representative of the angular position of the coupling mechanism 11 and kinematically linked to the coupling mechanism 11 by mechanical transmission elements, on the other hand detection elements 27 of the position and / or the displacement of the representative part 25. The detection elements 27 are connected to an electronic processing unit integrated in the control unit, adapted to determine the absolute angular position of the coupling mechanism 11 from the position and / or the displacement of the representative part 25 detected by the detection elements 27.

[0064] As shown in the figure 8, the determining device 24 is for example arranged at the operating button 15. Because the operating button 15 is continuously engaged with the coupling mechanism 11 via the transmission mechanism 17, the knowledge of the absolute angular position of the operating button 15 is representative of the absolute angular position of the coupling mechanism 11, the electronic processing unit being capable of such a deduction. It remains that the determining device 24 could quite easily be arranged directly at the coupling mechanism 11, if necessary.

[0065] The aforementioned representative part 25 can concretely be in the form of a toothed wheel, engaged with a driving wheel 26 belonging to the mechanical transmission elements, this driving wheel being engaged with a toothed crown 28 secured to the operating button 15. The mechanical transmission elements include, in this variant, the transmission mechanism 17. The detection elements 27 comprise for example a magnet 271 secured to the wheel constituting the representative part 25 and a magnetic sensor, for example a magnetoresistive sensor or electronic magnetometer 272 fixed housed in the operating button 15. The gear ratio between the constituent part 25 and the operating button 15 is preferably greater than or equal to the number of revolutions corresponding to the predetermined angular travel of the rotor of the lock cylinder 101 to which the coupling mechanism 11 is coupled in rotation.

[0066] With such a detection device 24, it becomes possible to determine and monitor the absolute angular position of the rotor of the lock cylinder 101, which can already be determined using encoders during electrically driven movements under the action of the electric motor 13, even during manual rotation drives by means of a key inserted into the outer lock entry or by means of the operating button 15.

Claims

1. An electromechanical latch actuating device (10) intended to be mounted on a face (201) of a leaf (200) equipped with a latch (100), the electromechanical latch actuating device (10) comprising: - a rotary coupling mechanism (11) capable of being rotatably secured to a rotor of a latch cylinder (101) of the latch (100); - an actuator comprising an electric motor (13), adapted to electrically drive in rotation the rotor of the latch cylinder (101) when the rotor is rotatably coupled to the coupling mechanism (11); - a disengageable clutch mechanism (14) interposed between the coupling mechanism (11) and the actuator and varying between a disengaged configuration and at least one engaged configuration; - a rotary operating knob (15) adapted for manual gripping and making it possible to manually drive in rotation the rotor of the latch cylinder (101) when the rotor is coupled in rotation to the coupling mechanism (11); in which the coupling mechanism (11) and the operating knob (15) are mounted in rotation respectively about a first axis of rotation and a second axis of rotation that are distinct and non-coincident, oriented respectively along first and second main directions (D1, D2) forming between them an angle comprised between 0° and 90° and in which a transmission mechanism (17) transforming a rotational movement of the operating knob (15) into a rotational movement of the coupling mechanism (11) is interposed between the coupling mechanism (11) and the operating knob (15); - a mechanical torque limiting mechanism (20) placed between the transmission mechanism (17) and the operating knob (15), varying between a deactivated configuration in which the operating knob (15) is rotatably coupled with the transmission mechanism (17) and an activated configuration in which the operating knob (15) and the transmission mechanism (17) are rotatably disengaged, the activated configuration being automatically adopted as soon as a mechanical torque having a value greater than a predetermined value for which the mechanical torque limiting mechanism (20) is designed is applied and the deactivated configuration being automatically adopted otherwise, - a determination device (24) capable of determining the absolute angular position of the coupling mechanism (11) within a predetermined angular travel, comprising on the one hand a representative part (25) of the angular position of the coupling mechanism (11) and kinematically connected to the coupling mechanism (11) by means of mechanical transmission elements (26, 28, 17), on the other hand, detection elements (27) for detecting the position and / or movement of the representative part (25) connected to an electronic processing unit adapted to determine the absolute angular position of the coupling mechanism (11) from the position and / or movement of the representative part (25) detected by the detection elements (27).

2. The electromechanical latch actuating device (10) according to claim 1, wherein the determination device (24) is arranged at the operating knob (15).

3. The electromechanical latch actuating device (10) according to any of claims 1 or 2, wherein the knowledge of the absolute angular position of the operating knob (15) is representative, by deduction by the electronic processing unit, of the absolute angular position of the coupling mechanism (11).

4. The electromechanical latch actuating device (10) according to any of claims 1 to 3, wherein the representative part (25) is a toothed wheel engaged with a driving wheel (26) belonging to the mechanical transmission elements (26, 28, 17), said driving wheel (26) being engaged with a crown gear (28) secured to the operating knob (15).

5. The electromechanical latch actuating device (10) according to claim 4, wherein the transmission elements (26, 28, 17) include the transmission mechanism (17).

6. The electromechanical latch actuating device (10) according to any of claims 4 or 5, wherein the detection elements (27) comprise a magnet (271) secured to the wheel constituting the representative part (25) and a magnetic sensor.

7. The electromechanical latch actuating device (10) according to any of claims 1 to 6, wherein the transmission mechanism (17) ensures a permanent, non-disengageable coupling between the coupling mechanism (11) and the operating knob (15) as long as the mechanical torque limiting mechanism (20) adopts its deactivated configuration.

8. The electromechanical latch actuating device (10) according to any one of claims 1 to 7, wherein the disengageable clutch mechanism (14) comprises a driving wheel (141) rotatably connected to an output axis of the actuator, a driven wheel (142) rotatably connected to the coupling mechanism (11), at least one planetary wheel (144) of the driving wheel (141) and a movement system for positioning the planetary wheel (144) in different positions about the axis of the driving wheel (141).

9. The electromechanical latch actuating device (10) according to any one of claims 1 to 8, wherein the transmission mechanism (17) comprises a driving wheel (171) connected to and driven in rotation by the operating knob (15) and a driving wheel (172) connected in rotation to the coupling mechanism (11), the driven wheel (172) being driven in rotation by the driving wheel (171).

10. The electromechanical latch actuating device (10) according to claims 8 and 9, wherein the driven wheel (172) of the transmission mechanism (17) and the driven wheel (142) of the clutch mechanism (14) are made of a single part.

11. The electromechanical latch actuating device (10) according to claim 10, wherein the driven wheel (172) of the transmission mechanism (17) is in indirect engagement with the driving wheel (171) of the transmission mechanism (17) with the interposition of at least one intermediate wheel (173) and wherein said same part has a height adapted to cooperate with the intermediate wheel (173) of the transmission mechanism (17) and with said at least one planetary wheel (144) of the clutch mechanism (14), which are generally superimposed on each other.

12. The electromechanical latch actuating device (10) according to any one of claims 1 to 11, wherein the electromechanical latch actuating device (10) comprises a housing (18) provided with fastening elements intended to fasten the housing (18) to the face (201) of the leaf (200), enclosing at least the transmission mechanism (17), the coupling mechanism (11), the disengageable clutch mechanism (14) and an electrical energy storage device (16) adapted to supply at least the actuator with electrical energy, and providing access to the operating knob (15) from outside the housing (18) such that the operating knob (15) is placed, axially along a main axis (X) of the electromechanical latch actuating device (10), between the electrical energy storage device (16) and the coupling mechanism. (11).

13. The electromechanical latch actuating device (10) according to any one of claims 1 to 12, wherein the electric motor (13) is housed in the operating knob (15).

14. A closing system for a leaf (200), comprising on the one hand a latch (100) including a latch cylinder (101) having a stator mounted on the leaf (200) so as to pass through its thickness and a rotor mounted in rotation relative to the stator and the rotation of which actuates in translation at least one deadbolt, and at least one handle pivotally mounted on the leaf (200) actuating a spring bolt, on the other hand an electromechanical latch actuating device (10) according to any one of claims 1 to 13 cooperating with the latch (100) in such a way that the coupling mechanism (11) of the electromechanical latch actuating device (10) is rotatably secured to the rotor of the latch cylinder (101) of the latch (10), in which the coupling mechanism (11) of the electromechanical latch actuating device (10) is located, axially along the main axis (X) of the electromechanical latch actuating device (10), between the handle of the latch (100) and the operating knob (15) of the electromechanical latch actuating device (10).

15. A locking system according to claim 14, wherein the latch (100) comprises two opposite maximum angular stops for limiting the displacement of the rotor of the latch cylinder (101) or the coupling mechanism (11) of the electromechanical latch actuating device (10) within a predetermined angular travel and wherein the determining device (24) of the electromechanical latch actuating device (10) is capable of determining the absolute angular position of the coupling mechanism (11) within said predetermined angular travel.