The present invention relates to an electromechanical lock assembly, which is configured to be powered by insertion of a programmable key in a key receptacle, said lock assembly comprising a lock body, a lock core located at least partially within the lock body and selectively rotatable with respect to the lock body, the lock core including a key receptacle for receiving a programmable key, a lock bolt operating member rotationally secured to the lock core and configured to move a lock bolt of a lock for locking and unlocking said lock, and an electronic access control device.
EP 1 960 622 B2 shows an electromechanical locking system that comprises a lock core, a tailpiece and an electrically operated clutch mechanism for rotatably coupling the tailpiece to the lock core. Further, the lock core includes a keyway for a key having an electrical power source and electrical connection means which provides an electrical connection with the electrical power source of the key.
However, this electromechanical locking system is considered to be complex, which render it cumbersome to manufacture, assemble and use with different kind of lock sets.
An object of the present invention is to at least partly overcome the above-mentioned drawbacks and to provide an improved electromechanical lock assembly.
According to a first aspect of the invention, this and other objects are achieved, in full or at least partly, by an electromechanical lock assembly, which is configured to be powered upon insertion of a programmable key in a key receptacle, said lock assembly comprising a lock body, a lock core extending along an axial direction, the lock core being located at least partially within the lock body and selectively rotatable with respect to the lock body along the axial direction, the lock core including a key receptacle for receiving a programmable key, a lock bolt operating member rotationally secured to the lock core and configured to move a lock bolt of a lock for locking and unlocking said lock, and an electronic access control device, wherein the lock assembly further comprises an annular element which is rotatably and axially displaceably mounted on said lock core, a coupling device arranged to communicate with said electronic access control device and, upon the insertion of an appropriate key in the key receptacle, rotationally lock the annular element to the lock core, thereby enabling rotation of the lock core and thereby enabling locking and unlocking of said lock with said appropriate key, and a blocking arrangement comprising a retaining device arranged to prevent said annular element from rotating together with said lock core when the lock core is rotated with an inappropriate key, an engagement portion arranged to rotate with the lock core, one contact surface situated on the engagement portion, one contact surface situated on said annular element and a stationary blocking member, wherein said contact surfaces being configured to, upon rotation of said lock core relative to said annular element, axially move said annular element into engagement with said stationary blocking member, thereby blocking further rotation of the lock core and thereby prevent unauthorized locking and unlocking of said lock.
Upon the insertion of an appropriate key, the coupling device thus couples the annular element to the lock core, which prevents the lock core from rotating together relative to the annular element and thereby enables locking and unlocking rotation of the lock core. The coupling device thus serves to enable locking and unlocking rotation of the lock core and the lock operating member which is arranged to rotate together with the lock core. The annular element is maintained in a non-blocking position as long as an appropriate key is inserted in the key receptacle. The lock core is formed as an integral part and the lock bolt operating member is never disengaged from the lock core. In this solution there is thus no need to rotationally couple separate parts of a lock core. This enables a simple solution having few parts and that is easy to manufacture and assemble. Also, it provides for a solution that can be used together with different types of lock sets in an easy manner. Furthermore, this solution allows the use of an electrical actuator to be minimized, thereby providing a power efficient solution.
If the lock core is rotated using an inappropriate key, the annular element is moved into a blocking position, in which it engages each of the lock core and the stationary blocking member. Then, the annular element, blocks further rotation of the lock core. In this manner, the blocking arrangement blocks unauthorized locking and unlocking rotation of the lock core, and consequently unauthorized locking and unlocking of an associated lock, in a robust and reliable manner. Hence, the blocking arrangement may provide a robust and reliable solution.
Hence, especially in view of EP 1 960 622, a less complex solution having fewer parts may be achieved. Furthermore, a solution in which the lock core and lock operating member rotate instantly when using an appropriate key is achieved. Also, a solution in which the lock core cannot be rotated more than just a few degrees with an inappropriate key, is provided.
Furthermore, the electromechanical lock assembly may require the need of an electrical actuator during a relatively short period of time. This has the advantage that the electromechanical lock assembly requires a reduced amount of electrical power to operate.
The electromechanical lock assembly may be configured to be powered by the programmable key when the programmable key has reached an activation position within the key receptacle.
The activation position of the programmable key may be a position where a major portion of a key blade the programmable key is inserted in the key receptacle.
The coupling device may comprise a coupling member arranged to be linearly movable along a direction being transverse to the axial direction of the lock core.
This may prevent unauthorizedly locking the annular element relative to the lock core, thereby increasing security.
The term “transverse” should here be construed broadly, i.e. not only encompassing a strict 90-degree perpendicular angle. The skilled person realizes that a deviation from a strict 90-degree angle works equally well to rotationally lock the annular element to the lock core. Preferably, the coupling member is linearly movable along a direction being in a span of between −30 and +30 degrees from a direction being essentially perpendicular to the axial extension of the lock core. More preferably, the span is between −20 and +20 degrees, and even more preferably the span is between −10 and +10 degrees.
The coupling member may form part of an electric actuator of the coupling device, wherein said electric actuator is arranged to move the coupling member from a rest position, in which the coupling member allows the lock core to rotate relative to the annular element, to a coupling position in which the coupling member rotationally locks said annular element to said lock core.
The coupling device may thus comprise an electric actuator, such as e.g. a solenoid, having a coupling member being movable between a rest position, in which the movable member is situated when the electric actuator is powerless, and a coupling position, in which the coupling member is situated when the electric actuator is powered and in which it rotationally locks the annular element to the lock core.
The annular element may be movable between a non-blocking position, to which said annular element is biased by a biasing member, and a blocking position.
As an alternative to the linearly moveable coupling member, a pivotably movable coupling member may be used. In other words, the coupling member may be pivotable or rotatable between said rest position and said coupling position. In this embodiment a coupling member in the form of a pivotable arm or a rotatable disc may thus be used.
The coupling member may comprise a locking portion arranged to be received in a geometrically complementary portion of the annular element.
This allows rotationally and axially locking the annular element relative to the lock core, thereby allowing locking and unlocking the lock.
The coupling member may further comprise a coupling member solenoid, and the lock core may further comprise a permanent magnet.
The lock core may further comprise an impulse dampening arrangement arranged to dampen a movement of the coupling member upon exposing the electromechanical lock assembly to an impulse.
The term “impulse” should here be construed as a mechanical impulse. Such a mechanical impulse is understood as being a sudden acceleration of the electromechanical lock assembly, either by a direct mechanical engagement by a foreign object on a part of the lock or an indirect intervention, e.g. by means of acoustic waves or any other means of achieving a mechanical movement of the lock or parts thereof, which movement could make the coupling member start to move relative to the lock core. The impulse dampening arrangement is configured to prevent such a mechanical impulse. The impulse may be isolated in time, i.e. include one pulse only, or could be a part of two or more impulses, i.e. a pulse train. A particularly important kind of such a pulse train is one which has been tuned to a natural frequency, or eigenfrequency, of the mechanical system. The impulse arrangement is therefore particularly configured to protect from such pulse trains.
The coupling member is powered by the programmable key. Hence, the coupling member may engage the annular element by magnetic attraction, i.e., substantially frictionlessly, which may extend the lifetime of the coupling member compared to other coupling solutions possibly involving parts in contact that mutually move.
The impulse dampening arrangement may comprise circuitry having an electromotive voltage generating function configured to generate an electromotive voltage in response to a voltage induced by a relative movement between the coupling member and the permanent magnet, thereby generating a magnetic force between the coupling member solenoid and the elongated permanent magnet counteracting a movement of the coupling member relative to the lock core.
One way to achieve such a circuitry having an electromotive voltage generating function is by short-circuiting the coupling member solenoid and just use the naturally occurring electromotive force induced in the same during movement. In other words, said circuitry having an electromotive voltage generating function may be defined by a closed loop including the coupling member solenoid and electrical connections short-circuiting the same.
The impulse dampening arrangement may hence dampen a movement of the coupling member caused by a mechanical impulse on the electromechanical lock assembly.
The impulse dampening arrangement may further comprise a pivotable arm arranged to be pivoted relative to the lock core upon exposing the electromechanical lock to an impulse such that the pivotable arm upon the impulse blocks a movement of the coupling member relative to the lock core.
The pivotable arm forms part of an arrangement having similar mass as the coupling member and is biased by a biasing member similar to a biasing member of the coupling member. Hence, upon a mechanical impulse of the electromechanical lock assembly, the pivotable arm may move simultaneously with the coupling member such that an end portion of the pivotable arm blocks the coupling member to move to such an extent that the annular element becomes rotationally and axially locked, thereby preventing unauthorized unlocking of the lock. The pivotable arm may thereby provide further security against unauthorized attempts to unlock the lock.
The electric actuator may be a solenoid, which has the advantage of an electromechanical lock assembly with very low power consumption may be achieved.
The retainer device may comprise a retaining member which is received in a recess formed in the annular element, which may provide a robust and reliable solution.
The retaining member is a ball and preferably a spring biased ball.
The recess may be an axial groove extending in the axial direction.
The electromechanical lock assembly may further comprise an axial movement limiting device arranged to limit axial movement of the annular element relative to the lock core. The axial movement limiting device thus maintains the annular element rotationally coupled to the lock core. This allows for an assembly with even less power consumption, since the electrical actuator need to be powered only in the initial phase of the rotation of the lock core, i.e. during a relatively short period of time when rotation of the lock core relative to the annular element is initiated. The axial movement limiting device is thus arranged to maintain the annular element in a non-blocking position.
The axial movement limiting device may comprise at least one ball received in an annular groove formed in the annular element, which provides for a robust and reliable solution.
The lock body may be cylindrical.
The stationary blocking member may be located in between a front face of the key receptacle and the annular element along the axial direction such that said contact surfaces are configured to, upon rotation of said lock core relative to said annular element, axially move said annular element in a direction towards the front face of the key receptacle to move into engagement with said stationary blocking member.
This axially ordered arrangement of the parts may simplify assembling the electromechanical lock assembly.
The stationary blocking member may be annularly shaped and arranged circumferentially around the lock core such that the lock core is freely rotatable in respect thereto.
This may simplify assembling of the electromechanical lock assembly.
The engagement portion may form a part of the lock core. The engagement portion may e.g. be an integral part of the lock core, or being a separate element secured to the lock core e.g. by welding, soldering or the like. As an alternative, the engagement portion may form a part of another element of the electromechanical lock assembly. In other words, the electromechanical lock assembly may further comprise a connecting element which is rotationally secured to the lock core and to the lock bolt operating member, and wherein said engagement portion forms a part of said connecting element.
The connecting element may be secured to the lock core by means of a break pin which is arranged to break upon a relative force applied between the lock core and the connecting element exceeding a threshold force.
Hence, upon rotating the lock core with an inappropriate key, the contact surfaces between the connecting element and the annular element enforces the connecting element and the annular element axially away from each other in the axial direction, as the annular element in such a situation is engaged with the stationary blocking member. If the inappropriate key still is continued to be rotated by a torque exceeding a threshold torque, the break pin may break due to exertion of an axially directed shear force. If the break pin break, the lock core becomes freely rotatable while the lock is maintained locked. This may further enhance security of the electromechanical lock assembly.
The connecting element may, further, be rotationally secured to the lock core by means of a locking arrangement which is arranged to rotationally secure the lock core to the connecting element in an absence of an axial movement of said annular element into engagement with said stationary blocking member, and to rotationally unsecure the connecting element from the lock core upon a rotation of the lock core relative to the annular element when the annular element is in engagement with the stationary blocking member.
The locking arrangement may comprise a protruding relief mated with a complementary cavity. The protruding relief may be located on the lock core and the complementary cavity may be located on the connecting element. A main surface of the protruding relief is aligned transverse to the axial direction. This may prevent an unnecessary fatigue or accidental breaking of the break pin, should an appropriate key be rotated with a too large torque. The locking arrangement is thereby arranged to withstand significant torques/forces compared to the break pin. The locking arrangement may thereby leave the break pin substantially unexposed to forces upon rotation with an appropriate key.
Further advantages and characteristics of the invention will emerge from the description below, and from the appended patent claims.
The invention will be described in more detail with reference to the appended schematic drawings, which show examples of presently preferred embodiments of the invention.
The invention will now for the purpose of exemplification be described in more detail by means of examples and with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and to fully convey the scope of the invention to the skilled addressee. Like reference characters refer to like elements throughout.
The description in connection with
The electromechanical lock cylinder 1 is connected to an existing locking mechanism 7 of the electromechanical lock 3. The door 5 may be a front door to a building such as a house or to an apartment. The electromechanical lock cylinder 1 is arranged in connection with a first bore 9 on the exterior side of the door 5 and an interior locking device (not shown), like a knob, on the interior side of the door 5.
As in a common door, having a door lock, a lock housing 11 holding the locking mechanism 7 is arranged in a cavity of the door 5. The locking mechanism 7 and the lock housing 11 are of common sort, which are well known in the art, and not described in detail here. The locking mechanism 7 may be of any kind known in the art which is arranged in a lock housing in a cavity of a door 5. As is also well known in the art, the locking mechanism 3 cooperates, via a lock bolt 13 with a striking plate (not shown) arranged in a door frame (not shown) to lock the door 5. The locking mechanism 7 controls the lock bolt 13 via the electromechanical lock cylinder 1 from the exterior side of the door 5 and via the interior locking device from the interior side of the door 5 in a well-known manner. The locking mechanism 7 is coupled to the lock bolt 13 by a conventional coupling means (not shown) to actuate the lock bolt 13.
The electromechanical lock cylinder 1 comprises a lock body, in the form of a cylinder body 15, a lock core 17 located within the cylinder body 15 and a lock bolt operating member 19. The lock core 17 is selectively rotatable with respect to the cylinder body 15. A fixing device is arranged to prevent the lock core 17 from being retracted from the cylinder body 13. This fixing device may comprise balls (not shown) partly received in an annular groove (not shown) formed in the cylinder body 13 and partly received in an annular groove 18 formed in the lock core 17. The lock bolt operating member 19 is rotationally secured to the lock core 13. To this end the lock operating member 19 is provided with a recess 21 configured to receive a projecting portion (not shown) of the lock core 17. The lock bolt operating member 19 is thus arranged to rotate together with the lock core 17. The lock bolt operating member 19 is configured to operate the lock bolt 13 of the locking mechanism 7 for locking and unlocking the lock 3. To this end, the lock bolt operating member 19 has a projecting portion 22 which is arranged to be received in a recess 23 of the locking mechanism 7.
Now referring to
The annular element 27 is rotatably and axially displaceably mounted on the hollow lock core portion 39. The coupling device 25 is accommodated inside the hollow lock core portion 39 and secured thereto to rotate together therewith. The coupling device 25 is arranged to, upon the insertion of an appropriate key in the key receptacle 37, rotationally couple the annular element 27 to the lock core 17. To this end the coupling device 25 comprises an electric actuator 41 which is configured to communicate with the access control device. The electric actuator 41 has a pivotable arm 43, as illustrated by arrow A in
The coupling device 25 is thus arranged to, upon the insertion of an appropriate key in the key receptacle 37, rotationally lock the annular element 27 to the lock core 17, which enables locking and unlocking rotation of the lock core 17 and thereby enables locking and unlocking of the lock 3, as will be described in detail later with reference to
A first end of the annular element 27 forms an engagement portion 27a which is configured to mate an engagement portion 17a of the lock core 17. The engagement portion 17a of the lock core 17 comprises a first contact surface forming a first ramp surface 45 and the engagement portion 27a of the annular element 27 comprises a second contact surface forming a second ramp surface 47. The first and second ramp surfaces 45, 47 together form a sliding interface capable of, upon rotation of the lock core 17 relative to the annular element 27, axially displacing the annular element 27 in a direction toward the stationary blocking member 35 into engagement with an engagement portion thereof. Upon such engagement further rotation of the lock core 17 is prevented. To this end a second end of the annular element 27 is provided with a blocking portion 27b configured to engage the engagement portion 49 of the stationary blocking member 35. The annular element 27 is thus movable between a non-blocking position, to which it is biased by the spring 33, and a blocking position. The annular element 27 is biased against the lock core 17 by the spring 33 to secure that the ramp surfaces 45, 47 of the sliding interface always are in contact with each other.
The first retainer device 29 is arranged to prevent the annular element 27 from rotating together with the lock core 17 when it is rotated with an inappropriate key, i.e. when the coupling arm 43 is situated in the rest position. To this end the first retainer device 29 comprises a spring biased ball 51 which is received in an axial groove 53 formed in the annular element 27.
The stationary blocking member 35, which in this case is formed by a ring, is secured to the cylinder body 15. The engagement portion 49 of the sleeve 35 comprises axially extending recesses 55 facing the blocking portion 27b of the annular element 27. The recesses 55 of the stationary blocking member 35 are configured to interact with teeth 57 of the blocking portion 27b of the annular element 27. In this embodiment the stationary blocking member 35 is thus formed as a separate part which is secured to the cylinder body 15 and thereby stationary. It is however appreciated that a stationary brake/blocking member may be formed as projecting portion(s) of the cylinder body itself.
The axial movement limiting device 31 is arranged to prevent axial movement of the annular element 27 upon rotation of the lock core 17 with an appropriate key. To this end the axial movement limiting device 31 comprises a spring biased ball 59 which is received in an axial groove 61 formed in the annular element 27.
The ramp surfaces 45, 47, the first retainer device 29, the blocking portion 27b of the annular sleeve 27 and the engagement portion 51 of the stationary blocking member 35 together form part of a blocking arrangement 63 that serves to prevent unauthorized rotation of the lock core 17 and thereby prevent unauthorized locking and unlocking of the lock 3.
With reference to
When the coupling arm 43 is moved to the coupling position, rotation of the lock core 17 to unlock the lock 3 is thus enabled. The coupling arm 43 may be held in the coupling position during the complete rotation of the lock core 17 during unlocking of the lock 3 or during only an initial phase thereof. In the latter case, the coupling arm 43 need to be held in the coupling position until the retaining member 51 of the retaining device 29 has been displaced from its retaining position in the axial groove 53.
Upon rotation of the lock core 17 using the appropriate key 65, the ball 59 of the axial limiting device 31 is received in the annular groove 61 to prevent axial movement of the annular element 27. The axial movement limiting device 31 thereby secures that the blocking teeth 57 of the annular element 27 are separated from the recesses 55 of the stationary blocking element 35 upon rotation of the lock core 17 with an appropriate key 65. The axial limiting device 31 serves to minimize the use of the coupling device 25. Hence, thanks to the axial limiting device 31 the electrical actuator of the coupling device 25 need to be powered only in an initial phase of the rotation of the lock core 17, i.e. under a very short period of time, which is allows for an assembly with a very low power consumption. The electromechanical lock cylinder 3 thus comprises an electric actuator, which may be in the form of a solenoid, to enable rotation of the lock core 17 for unlocking the lock 3.
Upon insertion of the inappropriate key 67 in the key receptacle 37 power is transferred to the lock core 17 in the same manner as described hereinbefore with reference to
Below, in connection with
In connection with the first example there is disclosed an annular element 27 being rotatably and axially displaceably mounted on a lock core 17. The annular element 27 can either be rotationally locked relative to the lock core 17 upon rotation of an appropriate key when inserted in a key receptacle 37, or rotate and/or axially move relative to the lock core 17 upon rotation of an inappropriate key, causing the annular element 27 to be axially displaced along an axial extension of the lock core to engage a stationary blocking member 35, thereby blocking further rotation of the lock core. The annular element 27 of the first example is understood being axially displaceable along the axial direction of the lock core 17 away from a front face 138 (reference numeral introduced in
Now turning to the second example in connection with
The stationary blocking member 135 is annularly shaped and arranged circumferentially around the lock core 117 such that the lock core 117 is freely rotatable in respect thereto. The stationary blocking member 135 is rotationally and axially secured to the lock body 115 by a locking pin 210. The locking pin 210 may have a substantially cylindrical geometry. The locking pin 210 has an outer surface geometry to be at least partly received by a substantially geometrically complementary groove 212 on the stationary blocking member 135. The locking pin 210 is, in a mounted position, located in an elongated cavity 214 of the lock body 115 having a surface geometry complementary to the outer surface geometry of the locking pin 210. When the lock body 115, the locking pin 210, and the stationary blocking member 135 are in a mounted position, as illustrated in
In connection with
In connection with
The lock core board 300 further comprises an impulse dampening arrangement 350. The impulse dampening arrangement 350 comprises a first and a second dampening type. Both the first and the second dampening type may prevent movement of the coupling member 143 upon exposing the electromechanical lock assembly 2 to mechanical impulses. The impulse dampening arrangement 350 may thereby prevent an unauthorized axial and rotational locking of the annular element 127 to the lock core 117.
The first dampening type is based on an induced electrical current in the coupling member solenoid 143 to prevent a relative movement of the coupling member 143 relative to the lock core board 300. The impulse dampening arrangement of the first type is for the example embodiment arranged to electrically connect the connection cords 330 of the coupling member solenoid 143 to establish a closed electrical circuit. This may be achieved by electronic switching means located on the circuitry 310, wherein the switching means is configured to short-circuit the connection cords 330. The electromechanical lock assembly 2 is configured such that the electrical circuit defined by the electrically connected connection cords 330 and the coupling member solenoid 143 is closed (i.e., short-circuited) in an absence of an appropriate key being inserted in the key receptacle 37. Hence, the impulse dampening of the first type will be turned on at all times, except while an appropriate key is inserted in the lock, upon which insertion the electromechanical lock assembly 2 is configured to open the short-circuited coupling member solenoid 143 and instead direct a current thereto for moving the coupling member solenoid 243 into engagement with the annular element 127 for locking and unlocking the lock.
Hence, in an absence of an appropriate key inserted in the lock and upon such a relative movement between the coupling member solenoid 243 and the lock core board 300, an electrical current is temporarily generated in the coupling member solenoid 243 by the presence of the permanent magnet 240 according to Lenz law. Such an electrical current thereby generates a magnetic force between the coupling member solenoid 243 and the permanent magnet 240 to counteract a movement of the coupling member 143 relative to the lock core 117. In absence of the impulse dampening arrangement, the coupling member 143 may, in the event of an impulse having a vector component along the extension of the coupling member 143, be moved to such an extent that the locking portion 143b is received by the geometrically complementary portion 144 of the annular element 127. The impulse dampening arrangement of the first dampening type may thereby function as a magnetic brake to prevent such a situation. A person skilled in the art readily appreciates that many variations of the impulse dampening arrangement of the first dampening type is achievable within the scope of the claims, such as actively modifying/modulating an electrical current through the coupling member solenoid 243, etc.
Now turning to
An intrinsic feature of the impulse dampening arrangement 350 is that the first and the second dampening type react differently to a mechanical impulse. The first type has a dynamic response as a result from the counterforce increasing with the penetration depth of the coupling member 143 into the permanent magnet 240. The second type instead has a linear behaviour. As readily appreciated by the person skilled in the art, the first type may be more suitable for dealing with strong impulses, whereas the second type may be more suitable for dealing with pulse trains of mechanical impulses tuned near or onto a natural frequency of the mechanical system. Thus, although each of the two types of impulse dampening may be used in isolation, a combination of the two types is beneficial to provide the best protection to any intervention from the outside creating mechanical impulses.
Now turning to
In connection with
The connecting element 130 is, further, rotationally secured to the lock core 117 by means of a locking arrangement 142;148 which is arranged to rotationally secure the lock core 117 to the connecting element 130 in an absence of an axial movement of the annular element 127 into engagement with said stationary blocking member 135, and to rotationally unsecure the connecting element 130 from the lock core 117 upon a rotation of the lock core 117 relative to the annular element 127 when the annular element 127 is in engagement with the stationary blocking member 135.
The end portion 140 of the lock core 117 may comprise a protruding relief 142 being a part of the locking arrangement 142;148. The protruding relief 142 may have any adequate geometry that allows to rotationally secure the lock core 117 and the connecting element 130 together. The connecting element 130 comprises a complementary cavity 148 being geometrically complementary to the protruding relief 142. Alternatively, the protruding relief 142 may be located at the connecting element 130, and the complementary cavity 148 may be located on the end portion 140 of the lock core with remained function. Notice that the connecting element 130 is disassembled from the lock core 117 and rotated away from the axial direction of the lock core 117 in
If instead an inappropriate key is inserted and rotated a few degrees, the annular element 127 axially moves towards the stationary blocking member 135 to engage the stationary blocking member 135 such that further rotation of the inappropriate key is prevented. As described above, the relative axial movement between the annular element 127 and the fixed annular element 130 is enforced by a mutual sliding between the first contact surface 145 and the second contact surface 147. Should the inappropriate key be further rotated while the annular element 127 and the stationary blocking member 135 are engaged,
It will be appreciated that many variants of the above-described embodiments are possible within the scope of the appended patent claims. For example, a linearly movable coupling member such as the coupling member 143 described for the lock geometry of example 2 may be equally well applicable for the lock geometry of example 1, realised for example by replacing the pivotable coupling member 43 in the lock 1. Likewise, a pivotable coupling member such as the pivotable coupling member 43 of example 1 may be equally well applicable for the lock geometry of example 2, realised for example by replacing the linearly movable coupling member 143 in the lock 2. As another example, the impulse dampening arrangement described with reference to example 2 may be equally well applicable for a lock geometry of example 1. This may be especially beneficial is a case where a linearly movable actuator is used in a lock geometry of example 1.
Filing Document | Filing Date | Country | Kind |
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PCT/SE2021/050298 | 4/1/2021 | WO |