AU2018308949A1

AU2018308949A1 - A mortice lock assembly with a powered lock actuator

Info

Publication number: AU2018308949A1
Application number: AU2018308949A
Authority: AU
Inventors: Paul Thomas SPENCER; Andrew Williams
Original assignee: Assa Abloy Australia Pty Ltd
Current assignee: Assa Abloy Australia Pty Ltd
Priority date: 2017-07-27
Filing date: 2018-07-27
Publication date: 2020-02-13
Anticipated expiration: 2038-07-27
Also published as: AU2018305775A1; WO2019018901A1; CN111263840B; NZ761119A; WO2019018897A1; NZ761112A; WO2019018900A1; AU2018305774B2; AU2018305728B2; CN111315949B; CN111226017B; WO2019018899A1; AU2018305774A1; NZ761122A; AU2018305728A1; CN111263840A; CN111315949A; AU2018308949B2; AU2018305775B2; NZ761127A

Abstract

This invention relates to a mortice lock assembly (1) including a manual actuator (28) which is operable for retracting a latch bolt assembly (22). The manual actuator (28) includes an inner hub (31) and an outer hub (29). The mortice latch assembly (1) also includes a lock mechanism (32) including an inner pawl (34) and an outer pawl (33) which are adjustable on operation of a motor (37).

Description

A Mortice Lock Assembly with a Powered Lock Actuator [0001] The present application is further related to PCT applications entitled “Mortice Lock Assembly having Electronic Switching Element”, “Mortice Lock Assembly having Electronic Control Module” and “Monitoring System for Lock Assembly” in the name of Assa Abloy Australia Pty Ltd having an international filing date of 27 July 2018, and the entire contents of each of the related PCT applications are incorporated herein by reference.

Technical Field [0002] This invention generally relates to a mortice lock assembly of the kind including a bolt, a manual actuator operable to move the bolt, and a lock mechanism having a powered actuator for controlling operation of the manual actuator. The invention also generally relates to a security system including such a mortice lock assembly. It will be convenient to hereinafter describe the invention with particular reference to a latch assembly, however it will be appreciated that the invention may be applicable to other forms of mortice lock assembly such as a deadbolt assembly.

Background of Invention [0003] A mortice lock assembly of the foregoing kind may include a pair of hubs that are each rotatable relative to a housing, to move a latch bolt from an extended position. The lock mechanism may include a detent bar that can be adjusted to adopt a locked position thereby preventing rotation of the respective hub. The detent bar can be moved by operation of a cylinder lock, or by a powered actuator.

[0004] Where the lock mechanism includes a powered actuator, it may take the form of a solenoid, which utilises changes in the supply of power to alter the position of the detent bar. The solenoid may for example remain powered so as to retract its plunger against a biasing force of a compression spring, so that

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PCT/AU2018/050784 selectively turning the power off releases the plunger to move with force of the spring to in turn move the detent bar.

[0005] The manner in which the solenoid is physically arranged relative to the detent can be adjusted to allow the lock mechanism to respond to a power failure event in a predetermined manner. The arrangement can be referred to as fail secure or fail safe, and the spring in the solenoid is used to respond accordingly. When a power failure event occurs and the lock mechanism is set to fail secure, the detent bar will remain in or move to the locked position whereby rotation of either hub is prevented. Alternatively when the lock mechanism is set to fail safe, the detent bar will remain in or move to a release position whereby rotation of either hub is permitted.

[0006] The applicant has appreciated that depending on the arrangement of the solenoid, requiring the solenoid to continuously draw power for the lock mechanism to remain in the locked condition can be problematic or at least inefficient. Furthermore, physically fitting all the elements of the lock into the housing, while allowing the arrangement of the solenoid relative to the detent to be adjustable to respond to a power failure event can be difficult, particularly where there is limited space within the housing. Still furthermore it would be preferable for the mortice lock assembly to provide for greater flexibility in relation to how it responds to a power failure event.

[0007] A reference herein to a patent document or other matter which is given as prior art is not to be taken as an admission that that document or matter was, in Australia, known or that the information it contains was part of the common general knowledge as at the priority date of any of the claims.

Summary of Invention [0008] According to one aspect of this invention there is provided a mortice lock assembly for use with a door including a housing, a bolt movable relative to the housing between an extended position and a retracted position, a manual actuator including an inner hub and an outer hub each being operable from inner side and outer side of the housing respectively to move the bolt from at

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PCT/AU2018/050784 least the extended position to the retracted position, a lock mechanism including an inner pawl and an outer pawl which are adjustable relative to the inner hub and outer hub respectively, and a powered actuator for adjusting the condition of the inner pawl and the outer pawl between a locked condition in which the respective inner hub or outer hub is rendered inoperable and an unlocked condition in which the respective inner hub or outer hub is rendered operable, and the powered actuator includes one motor having an output that causes rotation about a powered hub axis when the motor is operable. While the inner hub and outer hub may also be operable to move the bolt from the retracted position to the extended position, it is preferred that the mortice lock assembly include a biasing spring for moving the bolt back to the extended position.

[0009] It is preferred that the mortice lock include a power storage within the housing which supplies power to at least the powered actuator, as this simplifies the installation process, however the power storage may also be located outside the housing. It is preferred that the powered actuator includes no more than one motor having an output that causes rotation about a powered hub axis when the motor is operable. It is further preferred that the motor includes a drive shaft that rotates about the powered hub axis when the motor is energised.

[0010] The lock mechanism preferably includes a drive arrangement intermediate the powered actuator and the inner pawl and outer pawl. The drive arrangement may take any form and preferably includes a cam that is rotatable on operation of the powered actuator to adjust the condition of one or both of the inner pawl and outer pawl. This arrangement has the advantage of allowing for greater selectivity or how the inner pawl and or outer pawl can be adjusted by the powered actuator. While the cam could act on the inner pawl and outer pawl directly, it is preferred that the drive arrangement includes an inner cam follower and outer cam follower which each interact with the cam to be movable between a first position and a second position on rotation of the cam. The inner cam follower and outer cam follower may each move linearly between the first position and the second position. The lock mechanism may include a biasing arrangement to urge the inner cam follower and outer cam follow towards the first position however this is merely preferred. Alternatively the inner cam

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PCT/AU2018/050784 follower and outer cam follower may interact with the cam in some form of captured arrangement so as to retain the inner follower and outer follower in a preferred position, such as the first position. It is preferred that the cam includes a cam surface, and each of the inner cam follower and outer cam follower each includes a bearing surface over which the cam surface slides as the cam rotates. The configuration of each bearing surface may take any suitable form, and in one form each bearing surface includes a bevelled portion over which the cam surface slides in order to move both the inner cam follower and outer cam follower to the second position. Clearly other surface configurations are possible to achieve this function.

[0011] The inner hub and outer hub are preferably mounted relative to the housing for rotation about a hub axis and the inner pawl and outer pawl are mounted relative to the housing for rotation about a pawl axis, whereby the hub axis and pawl axis are parallel. Alternatively the hub axis and pawl axis may be arranged at an angle to each other, or coaxial with each other. The lock mechanism may include a pawl shaft on which each of the inner pawl and outer pawl is mounted for rotation thereabouts, however other arrangements may be suitable.

[0012] The power storage may take any suitable form including any form of rechargeable battery or capacitor including any one or more of supercapacitors, ultra capacitors, pseudo capacitors and hybrid capacitors. It is further preferred that the mortice lock assembly include at least one electrical contact through which power can be supplied from a mains power supply remote from the housing to the power storage. It is preferred that the lock mechanism can be selected for operation in a fail-safe mode or a fail secure mode during a power failure event in which power is failed to be supplied from the mains power supply to the power storage. It is further preferred that where the lock mechanism is selected to operate in the fail-safe condition both the inner pawl and outer pawl adopt the unlocked condition in the power failure event, and where the lock mechanism is selected to operate in the fail secure condition both the inner pawl and outer pawl adopt the locked condition in the power failure event. However it is still further preferred that the lock mechanism can be

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PCT/AU2018/050784 selected to operate in the fail-safe condition or fail secure condition for each of the inner pawl and outer pawl individually so that the inner pawl and outer pawl adopts either the unlocked condition or lock condition in the power failure event. The manner in which the lock mechanism can be selected for operation can take any suitable form, and one form includes a lock mechanism switch (see claim 18) that is adjustable to control the operation of the lock mechanism as either fail safe, fail secure or escape mode whereby in escape mode one of or both of the inner pawl and outer pawl adopt the unlocked condition. Alternatively the selection of operation of the lock mechanism may be adjusted remotely. It is preferred that the lock mechanism switch is adjustable from outside the housing. This has the advantage of avoiding opening up the lock housing to adjust the mode of operation of the lock mechanism, which can cause the internal components to be inadvertently altered. The lock mechanism switch may be adjustable whilst the housing is installed in or on the door, or alternatively prevented from adjustment once installed in the door. The first arrangement has the advantage of simplifying the mode selection process, while the second arrangement has a security advantage over the first arrangement of preventing adjustment once installed.

[0013] It is preferred that the mortice lock assembly include a monitoring arrangement which monitors any one or more of the operation, condition or positon of the inner hub, outer hub, inner pawl, outer pawl, bolt, or power storage. It is further preferred that the monitoring arrangement monitors each of the inner hub and outer hub to determine if either of the inner hub or outer hub has rotated between a first position and a second position. Where the mortice lock includes a monitoring arrangement, and the housing is configured for accommodating a cylinder lock, and the bolt is configured for interaction with a cylinder cam of said cylinder lock, it is preferred that the monitoring arrangement monitors movement of the cylinder cam from a first position towards a second positon in which it engages with the bolt. The monitoring arrangement may take any suitable form so that it may include at least one shuttle for interaction with said cylinder cam which moves relative to the housing between a first position which corresponds with the cylinder cam

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PCT/AU2018/050784 adopting the first position, to a second position as the cylinder cam moves towards the second position. The monitoring arrangement may also include a monitoring switch which is adjustable to adjust an output signal from the mortice lock.

[0014] A mortice lock assembly may include any form of bolt and one preferred form includes a bolt assembly including a bolt head and a biasing means for biasing the bolt head towards the extended position. Furthermore the bolt head may include a bevelled leading surface. Still furthermore the bolt assembly may include an auxiliary bolt that is movable relative to the housing between a deadlocked and an un-deadlocked position.

[0015] It is preferred that the inner pawl and the outer pawl are each adjustable relative to the inner hub and the outer hub respectively on operation of the powered actuator.

[0016] It is further preferred that the inner pawl is adjustable relative to the outer pawl on operation of the powered actuator.

[0017] According to another aspect of this invention there is provided a security system for use with a door including a mortice lock assembly as herein before described and configured for connection to a mains power supply, an access control reader for location proximate the door configured for direct or indirect connection to the mains power supply and connection to the mortice lock assembly so that a signal can be sent to the lock mechanism in the event of a security protocol being satisfied.

[0018] It is preferred that the security system include a remote monitoring station for connection to at least to the mortice lock assembly, whereby in use the remote monitoring station monitors at least operation of either the inner hub or outer hub. The remote monitoring station may include an audible indictor and or visual indicator to indicate operation said at least inner hub or outer hub. The remote monitoring station may also be configured for connection to the access control reader and includes a data logger to log security protocol data.

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PCT/AU2018/050784 [0019] It will be convenient to hereinafter describe the invention in greater detail by reference to the attached illustrations. The particularity of the illustrations and accompanying description are not intended to limit the broad definition of the invention as provided of the claims. Instead the drawings and specific description are merely illustrative of how the invention might be put into effect.

Brief Description of Drawings [0020] Figure 1 is a partial exploded isometric view of a lock set incorporating a mortice lock according to one aspect of the invention in conjunction with a schematic of a security system according to another aspect of this invention.

[0021] Figure 2 is an isometric view of the mortice lock assembly from Figure 1 with a cover plate forming part of the housing removed.

[0022] Figure 3 is a side elevation view of the mortice lock from Figure 2 with the latch bolt assembly, and auxiliary bolt assembly in the extended position.

[0023] Figure 4 is a side elevation view of the mortice lock assembly from Figure 3 with the latch bolt assembly and auxiliary bolt assembly in a retracted position.

[0024] Figure 5 is an opposed side view of the mortice lock assembly from Figure 3.

[0025] Figure 6 is an exploded isometric view of the lock mechanism, inner hub and outer hub.

[0026] Figure 7 is an isometric view with the lock mechanism partially assembled from Figure 6 with both the inner pawl and outer pawl in an unlocked position.

[0027] Figure 8 is a side elevation view of part of the lock mechanism with the inner pawl illustrated in the release position.

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PCT/AU2018/050784 [0028] Figure 9 is a top plan view of the lock mechanism with this PCB removed to reveal the orientation of the cam relative to the inner cam follower and outer cam follower when the inner pawl and outer pawl are each in the unlocked condition.

[0029] Figure 10 is an isometric view with the lock mechanism partially assembled from Figure 6 with both the inner pawl and outer pawl in a locked condition.

[0030] Figure 11 is a side elevation view of part of the lock mechanism with the inner pawl illustrated in the locked condition.

[0031] Figure 12 is a top plan view of the lock mechanism with this PCB removed to reveal the orientation of the cam relative to the inner cam follower and outer cam follower when the inner pawl and outer pawl are each in the locked condition.

[0032] Figure 13 is a side elevation view of the mortice lock from Figure 1 with an inner cylinder cam installed.

[0033] Figure 14 is a side elevation view of the mortice lock from Figure 13 with the inner cylinder cam rotated to move the inner shuttle.

[0034] Figure 15 is a side elevation view of the mortice lock assembly from Figure 14 with the inner cylinder cam further rotated to engage the auxiliary bolt assembly.

[0035] Figure 16 is a side elevation view of the mortice lock assembly from Figure 15 with the inner cylinder cam further rotated to retract the auxiliary bolt assembly and latch bolt assembly.

Detailed Description [0036] Figure 1 is a partially exploded isometric view of a lock set 1 including a mortice lock assembly 2 according to one aspect of the invention. The lock set 1 illustrated also includes inner door furniture 3 and outer door furniture for location on an inner side and outer side of a door 5 (only portion a

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PCT/AU2018/050784 door stile is illustrated in Figure 1), respectively. The inner door furniture 3 includes an inner handle 6 which is rotatable about a hub axis X-X relative to an inner furniture plate 4. Whilst the outer door furniture 4 includes a corresponding outer handle 8 also rotatable about the hub axis X-X relative to an outer furniture plate 9. Figure 1 also illustrates the inner furniture plate 7 and outer furniture plate 9 both including an aperture to accommodate an inner cylinder lock 10 and outer cylinder lock 10 therethrough. Each of the inner cylinder lock 10 and outer cylinder lock 11 are operable by an appropriately configured key (not shown) for rotating a respective cylinder cam 12 (only the inner cylinder cam 12 is visible in Figure 1) about a cylinder cam axis Y-Y.

[0037] Whilst the mortice lock assembly 2 may be installed in a variety of different doors, Figure 1 illustrates a hollow door stiles which can accommodate appropriate wiring therein. The mortice lock housing 13 illustrated in Figure 1 includes an electrical contact or socket 14 providing a connection point for the wiring 15. The wiring preferably includes two wires to a mains power supply 16. A communications wire to a remote monitoring station 17 located remote from the door 5, and a communications wire to an access control reader 18 located approximate the door 5. The access control reader 18 is preferably of the kind that processes a wireless signal 19 produced by a key card or tag 20 for verifying an access protocol. Whereas the remote monitoring station 17 is preferably monitored by a person. The remote monitoring station 17 may monitor functions relating to the operation of the mortice lock assembly 2, and those functions will be described in greater detail by reference to latter illustrations. The remote monitoring station 17 may also be wired to the access control reader 18 to log data relating to the use of the access control reader 18, and adjust its security protocol procedures.

[0038] Referring now to Figure 2 which illustrates a cover plate 21 (see Figure 1) of the housing 13 removed. The mortice lock assembly 12 includes a bolt 22, or more specifically Figure 2 illustrates a latch bolt assembly 22 including a bolt head 23 with a bevelled leading face illustrated in an extended position. The bolt assembly 22 includes a bolt body 24 within the housing 13 which is configured to slide within the housing 13 between the extended

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PCT/AU2018/050784 position as shown and a retracted position (see Figure 4). A biasing spring (not shown) acts between a rear wall of the housing 13 and the bolt body 24 to urge the bolt assembly 22 towards the extended position. Figure 2 also illustrates an auxiliary bolt assembly 25 including an auxiliary bolt head 26 and an auxiliary bolt body 27. An auxiliary bolt spring (not shown) acts between the auxiliary bolt body 27 and a rear wall of the housing 13 in order to urge the auxiliary bolt head 26 towards the extended position as illustrated. The auxiliary bolt assembly 25 interacts with the latch bolt assembly 22 so as to deadlatch the latch bolt assembly 22 in the extended position, when the door 5 is closed, in a manner that will be understood by those skilled in the art. More specifically, the specifics of the structural interaction of the auxiliary bolt assembly 25 with the latch bolt assembly 22 is not essential to the current invention, only that it is preferred that there be some interaction to achieve the deadlatching function.

[0039] The latch bolt assembly 22 can be adjusted relative to the housing 13 by operation of a manual actuator 28 which includes an outer hub 29 in Figure 2, a hub lever 30 and an inner hub 31 (see Figure 5). Both of the inner hub 31 and outer hub 29 are independently rotatable about the hub axis X-X on rotation of the inner handle 6 or outer handle 8 respectively. Rotation of either the inner hub 31 or outer hub 29 about the hub axis X-X will cause the hub lever 30 to rotate also about the hub axis X-X from the position illustrated in Figure 3 to the position as illustrated in Figure 4 to thereby retract the latch bolt assembly.

[0040] The mortice lock assembly 2 also includes a lock mechanism 32 which controls rotation of either or both the inner hub 31 and outer hub 29. The lock mechanism 32 as illustrated in Figure 2 includes an outer pawl 33 and an inner pawl 34 (see Figure 5) which are each rotatable about a pawl axis Z-Z (see Figure 6). Figures 3 and 4 illustrate at least the outer pawl 33 in an unlocked condition, and whilst the outer pawl 33 is in this condition the outer hub 29 is free to rotate about the hub axis X-X to retract the latch bolt assembly 22 from the extended position. Whereas Figure 5 for example illustrates the inner pawl 34 in a locked condition thereby preventing the inner hub 31 from rotating to retract the latch bolt assembly 22 from the extended position.

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PCT/AU2018/050784 [0041] Figure 2 also illustrates a power control unit 25 in an upper cavity of the housing 13 which includes the electrical contacts 14 on an upper surface thereof. It can be appreciated from Figure 5 that the power unit also includes a power storage 36 which may take any form of rechargeable battery, a capacitor including any one or more of a super capacitor, ultra capacitor, pseudo capacitor and hybrid capacitor.

[0042] The internal elements of the lock mechanism 32 can be more easily appreciated from Figure 6. The lock mechanism illustrated includes a powered actuator in the form of a single motor 37 with an output in the form of a drive shaft 38 that rotates about a powered actuator axis A-A. The powered actuator axis A-A is substantially perpendicular and spaced from the pawl axis Z-Z.

[0043] The lock mechanism 32 also includes a drive arrangement between the motor 37 and the inner pawl 34 and outer pawl 35. The drive arrangement illustrated includes a cam 39 which is rotatable on operation of the motor 37 about the actuator axis A-A. The drive arrangement also includes an inner cam follower 40 and an outer cam follower 41 that move linearly in response to rotation of the cam 39. The motor 37, inner cam follower 40 and outer cam follower 41 are located within a casing which in the embodiment illustrated in Figure 6 is in the form of an inner part 42 and an outer part 43. The casing also houses an inner spring 44 and an outer spring 45 which act between the casing parts 42, 43 and the inner cam follower 40 and outer cam follower 41 respectively. Figure 6 also illustrates a pawl shaft 65 on which each of the inner pawl 34 and outer pawl 35 is mounted for rotation thereabouts. Finally, the lock mechanism also includes a sensor plate 46 forming part of a PCB 48 (see also figure 2) linking the lock mechanism 32 with the power control unit 35. The sensor plate 46 includes a cam sensor 47 for sensing a rotational position of the cam 39, and hub sensors 66, 67(which are visible in figures 8 and 10 respectively) for sensing the rotational position of each of the hub 29, 31. The cam 39 and each of the hubs 29, 31 include an imbedded magnet (not shown) that is sensed by the respective cam sensor 47 and hub sensors 66, 67. This arrangement could however be replaced by a series of micro switches.

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PCT/AU2018/050784 [0044] Referring now to Figure 7 which illustrates both the inner pawl 34 and outer pawl 35 in an unlocked condition relative to the inner hub 31 and outer hub 29 respectively. Both the inner hub 31 and outer hub 29 each include a shoulder 49, 50 which is positioned adjacent but spaced from an upper arm 51, 52 of each of the inner pawl 34 and outer pawl 35 respectively. It ought to be appreciated that with the inner pawl 34 and outer pawl 35 when in this position both the inner hub 31 and outer hub 29 are capable of being rotated about the actuation axis X-X. Referring now to Figure 8 which illustrates a part sectional view of the lock mechanism 32 and in particular a lower arm 53 of the inner pawl 34 captured in a recess 54 (see Figure 6) of the inner cam follower 40 so as to move therewith. The inner spring 44 is urging the inner cam follower 40 to cause the inner pawl 34 to adopt the position as illustrated in Figure 8, and the inner cam follower 40 is considered to be in a first position in the position illustrated in Figure 8.

[0045] Figure 9 illustrates a plan view of the cam 39 and both the inner cam follower 40 and outer cam follower 41 being in the first position. In contrast, Figure 12 illustrates the cam 39 having been rotated through 180° by operation of the motor 37 (see Figure 11) whereby the cam surface 55 slides over the bearing surface 56, 57 of each of the inner cam follower 40 and outer cam follower 41. It can be appreciated from Figure 11 that this has urged the inner cam follower 40 to move towards a second position thereby causing rotation of the inner pawl 34 in an anti-clockwise direction so that the upper arm 51 of the inner pawl 34 locates underneath the shoulder 49 of the inner hub 31. This arrangement is further illustrated in Figure 12 showing both the inner pawl 34 and outer pawl 35 in a locked condition, as a result of a cam 39 adopting the position as illustrated in Figure 12. Whereby rotation of the inner hub 31 and outer hub 29 respectively is prevented. It ought to be appreciated that rotation of the cam 39 through 90° in either the clockwise or anti-clockwise direction from the position as illustrated in Figure 9 would result in movement of either the inner cam follower 40 or outer cam follower 41 only. However, having regard to the shape of the cam surface 55, each bearing surface 56, 57 on the respective inner cam follower 40 and outer cam follower 41 includes a bevelled

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PCT/AU2018/050784 portion in order to allow the cam 39 to rotate through to the position as illustrated in Figure 10.

[0046] The mortice lock assembly 2 is preferably configured to respond to a power failure event in a predetermined manner. In this regard it is preferred that the lock mechanism 32 can be selected for operation in either a fail-safe mode, fail secure mode and escape mode. Figure 2 illustrates a pair of switches 58, 59 which form part of the lock mechanism 32 which are both accessible through an aperture formed in a rear wall of the housing 13. The manual switches 58, 59 may be located elsewhere on the housing, and to that extent they could be located behind the face plate 60 attached to the front wall of the housing 13. Alternatively, the selection for condition of operation may be adjusted remotely by some form of wireless communication device. Either of these alternate options would enable the adjustment to be made whilst the housing 13 is installed in the door 5. However, an advantage of having the switches 58, 59 adjustable through the rear wall of the housing is that it would impede an unauthorised adjustment of the selected condition for operation of the lock mechanism 32.

[0047] Each switch 58, 59 is adjustable between three positions which correspond with the lock mechanism 32 adopting the fail-safe mode, fail secure mode and escape mode respectively. Furthermore, each switch 58, 59 is dedicated to either the inner pawl 34 or outer pawl 35 respectively. Accordingly, for example, this allows both the inner pawl 34 and outer pawl 35 to respond to a power failure event in the same manner, or alternatively in a different manner. This is achieved by the inner pawl 34 being movable on operation of the motor 37 independently of the outer pawl 35. When a power failure event occurs if the inner switch 59 is set to fail-safe mode whilst the outer switch 58 is set to a fail secure mode the inner pawl 34 will adopt an unlocked condition whilst the outer pawl 35 will adopt a locked condition. This would allow the people within the building to continue to exit whilst preventing people outside of the building from entering the building during the power failure event. These conditions for operation of the lock mechanism can be achieved without the use of a solenoid as a result of the mortice lock assembly 2 including the power storage 36. The

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PCT/AU2018/050784 power storage 36 will retain sufficient power in order to adjust the condition of the inner pawl 34 and outer pawl 35 at least once in the event whereby the power is failed to be supplied from the mains power supply 16 to the power storage 36. Accordingly, for the purpose of this specification a power failure event is one where the power has failed to be supplied from a mains power supply 16 to the power storage 36.

[0048] The inner cylinder lock 10 and outer cylinder lock 11 both include an inner cylinder cam 12 and outer cylinder cam (not shown) respectively, each of which configure to interact with the latch bolt assembly 22. The manner in which the inner cylinder cam 12 interacts with the latch bolt assembly 22 is more clearly illustrated with reference to Figures 13 to 16. Figure 13 illustrates the inner cylinder cam 12 in a vertical orientation, and it should be noted that the auxiliary bolt assembly 25 and latch bolt assembly 22 are both in the extended position. Figure 13 also illustrates an outer shuttle 61 which is obscuring an inner shuttle 62 (see Figure 14), which each individually interact with a switching mechanism 63. It can be appreciated by comparing Figures 13 and 14 that rotation of the inner cylinder cam in an anti-clockwise direction causes a distal end of the cam to engage and move the inner shuttle 62 towards the front wall of the housing 13. This in turn triggers the switching mechanism 67 which forms part of the monitoring arrangement to send a signal to a remote monitoring station 17 that an authorised person is mechanically bypassing the lock mechanism 32. Further rotation of the inner cylinder cam 12 in the anti-clockwise direction from the position illustrated in Figure 14 to the position illustrated in Figure 15 results in the distal end of the cam engaging part of the latch bolt assembly 22. Again, further rotation of the inner cylinder cam 12 from the position as illustrated in Figure 15 to the position as illustrated in Figure 16 causes retraction of both the auxiliary bolt assembly 25 and latch bolt assembly 22 to the retracted position.

[0049] It is also preferred that monitoring arrangement monitors the relative position of the inner hub 31 and outer hub 29, via hub sensors 66 and 67, and or the cam 39 via cam sensor 47, to determine if either of the inner hub 31, outer hub 29 or cam 39 have been rotated.

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PCT/AU2018/050784 [0050] Figure 2 also illustrates the mortice lock assembly 2 including a monitoring switch 64 which is adjustable between a first position and a second position. The function of the monitoring switch is to adjust signals being sent from the mortice lock assembly 2 to the remote monitoring station 17 to suit the protocols of the monitoring station.

[0051] It ought to be appreciated from the foregoing that the mortice lock assembly 2 as hereinbefore described provides a relatively simple alternate form of a lock mechanism utilising a powered actuator. The preferred arrangement of incorporating a motor 32, as opposed to a solenoid, can provide a lower power consumption alternative. Also, the ability to utilise a pair of switches 58, 59 to select fail-safe, fail secure or escape mode for each pawl simplifies the adjustment process while providing greater flexibility for how the lock mechanism 32 responds to a power failure event.

[0052] Various alterations and/or additions may be introduced into the mortice lock assembly as hereinbefore described without departing from the spirit or ambit of the invention.

Claims

The claims defining the invention are as follows:

1. A mortice lock assembly for use with a door including a housing, a bolt movable relative to the housing between an extended position and a retracted position, a manual actuator including an inner hub and an outer hub each being operable from inner side and outer side of the housing respectively to move the bolt from at least the extended position to the retracted position, a lock mechanism including an inner pawl and an outer pawl which are adjustable relative to the inner hub an outer hub respectively and a powered actuator for adjusting the condition of the inner pawl and the outer pawl between a locked condition in which the respective inner hub or outer hub is rendered inoperable and an unlocked condition in which the respective inner hub or outer hub is rendered operable, the powered actuator includes one motor having an output that causes rotation about a powered hub axis when the motor is operable.
2. A mortice lock assembly according to claim 1 including a power storage within the housing which supplies power to at least the powered actuator.
3. A mortice lock assembly according to claim 1 or 2 wherein the motor includes a drive shaft that rotates about the powered hub axis when the motor is energised.
4. A mortice lock assembly according to any one of the preceding claims wherein the lock mechanism includes a drive arrangement intermediate the powered actuator and the inner pawl and outer pawl.
5. A mortice lock assembly according to claim 4 wherein the drive arrangement includes a cam that is rotatable on operation of the powered actuator to adjust the condition of one or both of the inner pawl and outer pawl.

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6. A mortice lock assembly according to 5 wherein the drive arrangement includes an inner cam follower and outer cam follower which each interact with the cam to be movable between a first position and a second position on rotation of the cam.
7. A mortice lock assembly according to claim 6 wherein the inner cam follower and outer cam follower each move linearly between the first position and the second position.
8. A mortice lock assembly according to claim 6 or 7 wherein the lock mechanism includes a biasing arrangement to urge the inner cam follower and outer cam follow towards the first position.
9. A mortice lock assembly according to any one of claims 6 to 8 wherein the cam includes a cam surface, and each of the inner cam follower and outer cam follower each includes a bearing surface over which the cam surface slides as the cam rotates.
10. A mortice lock assembly according to claim 9 wherein each bearing surface includes a bevelled portion over which the cam surface slides in order to move both the inner cam follower and outer cam follower to the second position.
11. A mortice lock assembly according to any one of the preceding claims wherein inner hub and outer hub are mounted relative to the housing for rotation about a hub axis and the inner pawl and outer pawl are mounted relative to the housing for rotation about a pawl axis, whereby the hub axis and pawl axis are parallel.
12. A mortice lock assembly according to claim 11 wherein the lock mechanism includes a pawl shaft on which each of the inner pawl and outer pawl is mounted for rotation thereabouts.

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13. A mortice lock assembly according to any one of the preceding claims wherein the power storage includes any form of rechargeable battery or capacitor including any one or more of supercapacitors, ultra capacitors, pseudo capacitors and hybrid capacitors.
14. A mortice lock assembly according to any one of the preceding claims including at least one electrical contact through which power can be supplied from a mains power supply remote from the housing to the power storage.
15. A mortice lock assembly according to claim 14 wherein the lock mechanism can be selected for operation in a fail-safe mode or a fail secure mode during a power failure event in which power is failed to be supplied from the mains power supply to the power storage.
16. A mortice lock assembly according to claim 15 wherein where the lock mechanism is selected to operate in the fail-safe condition the inner pawl and outer pawl adopts the unlocked condition in the power failure event, and where the lock mechanism is selected to operate in the fail secure condition the inner pawl and outer pawl adopts the locked condition in the power failure event.
17. A mortice lock assembly according to claim 15 wherein the lock mechanism can be selected to operate in the failsafe condition or fail secure condition for each of the inner pawl and outer pawl individually so that the inner pawl and outer pawl adopt either the unlocked condition or lock condition in the power failure event.
18. A mortice lock assembly according to any one of claims 15 to 17 including a lock mechanism switch operable to control individually the inner pawl and outer pawl that is adjustable to control the operation of the lock mechanism as either fail safe, fail secure or escape mode whereby in escape mode one of or both of the inner pawl and outer pawl adopt the unlocked condition.

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19. A mortice lock assembly according to claim 18 wherein the lock mechanism switch is adjustable from outside the housing.
20. A mortice lock assembly according to claim 18 or 19 wherein the lock mechanism switch is adjustable whilst the housing is installed in or on the door.
21. A mortice lock assembly according to any one of the preceding claims including a monitoring arrangement which monitors any one or more of the operation, condition or positon of the inner hub, outer hub, inner pawl, outer pawl, bolt, or power storage.
22. A mortice lock assembly according to claim 21 wherein the monitoring arrangement monitors each of the inner hub and outer hub to determine if either of the inner hub or outer hub has rotated between a first position and a second position.
23. A mortice lock assembly according to claim 21 or 22 wherein the housing is configured for accommodating a cylinder lock and the bolt is configured for interaction with a cylinder cam of said cylinder lock, wherein the monitoring arrangement monitors movement of the cylinder cam from a first position towards a second positon in which it engages with the bolt.
24. A mortice lock assembly according to claim 23 wherein the monitoring arrangement includes at least one shuttle for interaction with said cylinder cam which moves relative to the housing between a first position which corresponds with the cylinder cam adopting the first position, to a second position as the cylinder cam moves towards the second position.
25. A mortice lock assembly according to claim 24 wherein the monitoring arrangement includes a monitoring switch which is adjustable between a first position in which a signal is sent to a remote monitoring station being remote from the mortice lock assembly, and a second position whereby the signal is prevented from being sent to the remote monitoring system.

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26. A mortice lock assembly according to any one of the preceding claims wherein the bolt is in the form of a bolt assembly including a bolt head and a biasing means for biasing the bolt head towards the extended position.
27. A mortice lock assembly according to claim 26 wherein the bolt head includes a bevelled leading surface.
28. A mortice lock assembly according to claim 26 or 27 including an auxiliary bolt that is movable relative to the housing between a deadlocked and an undeadlocked position.
29. A mortice lock assembly according to any one of the preceding claims wherein the powered actuator includes no more than the one motor.
30. A mortice lock assembly according to any one of the preceding claims wherein the inner pawl and the outer pawl are each adjustable relative to the inner hub and the outer hub respectively on operation of the powered actuator.
31. A mortice lock assembly according to any one of the preceding claims wherein the inner pawl is adjustable relative to the outer pawl on operation of the powered actuator.
32. A security system for use with a door including a mortice lock assembly according to any one of the preceding claims configured for connection to a mains power supply, an access control reader for location proximate the door configured for direct or indirect connection to the mains power supply and connection to the mortice lock assembly so that a signal can be sent to the lock mechanism in the event of a security protocol being satisfied.

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33. A security system according to claim 32 including a remote monitoring station for connection to at least to the mortice lock assembly, whereby in use the remote monitoring station monitors at least operation of either the inner hub outer hub or cam.
34. A security system according to claim 33 wherein the remote monitoring station includes an audible indictor and or a visual indicator to indicate operation of said at least inner hub or outer hub.
35. A security system according to claim 33 or 34 wherein the remote monitoring station is also configured for connection to the access control reader and includes a data logger to log security protocol data.