NZ614621B2 - Electrically controlled mortice lock assembly - Google Patents
Electrically controlled mortice lock assembly Download PDFInfo
- Publication number
- NZ614621B2 NZ614621B2 NZ614621A NZ61462112A NZ614621B2 NZ 614621 B2 NZ614621 B2 NZ 614621B2 NZ 614621 A NZ614621 A NZ 614621A NZ 61462112 A NZ61462112 A NZ 61462112A NZ 614621 B2 NZ614621 B2 NZ 614621B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- lock assembly
- assembly according
- condition
- mortice lock
- rotatable member
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000005755 formation reaction Methods 0.000 claims description 7
- 210000003371 Toes Anatomy 0.000 description 5
- 210000000474 Heel Anatomy 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- GXVMAQACUOSFJF-UHFFFAOYSA-N 1,3-dichloro-5-(2-chlorophenyl)benzene Chemical compound ClC1=CC(Cl)=CC(C=2C(=CC=CC=2)Cl)=C1 GXVMAQACUOSFJF-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- RVWLHPJFOKUPNM-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(2,3-dichlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=C(Cl)C=C(Cl)C=2Cl)Cl)=C1Cl RVWLHPJFOKUPNM-UHFFFAOYSA-N 0.000 description 1
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000015246 common arrowhead Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000003245 working Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B13/00—Devices preventing the key or the handle or both from being used
- E05B13/002—Devices preventing the key or the handle or both from being used locking the handle
- E05B13/004—Devices preventing the key or the handle or both from being used locking the handle by locking the spindle, follower, or the like
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0072—Operation
- E05B2047/0073—Current to unlock only
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0072—Operation
- E05B2047/0076—Current to lock only, i.e. "fail-safe"
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
- E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
- E05B47/0657—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like
- E05B47/0665—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like radially
- E05B47/0669—Controlling mechanically-operated bolts by electro-magnetically-operated detents by locking the handle, spindle, follower or the like radially with a pivotally moveable blocking element
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/16—Locks or fastenings with special structural characteristics with the handles on opposite sides moving independently
Abstract
mortice lock assembly (1) including a lock means having a powered actuator that is operable in a failsafe condition or a failsecure condition. The assembly also includes a selector (12) for adjusting the condition of the lock means whereby the selector includes a rotatable member (11) that is rotatable through no more than 360° to adjust the condition of the selector. atable through no more than 360° to adjust the condition of the selector.
Description
ELECTRICALLY CONTROLLED MORTICE LOCK ASSEMBLY
This invention relates to a mortice lock assembly for use with a door. Locks of
this kind are often used for securing doors and the like in a closed position and
it will be convenient to hereinafter describe the invention with reference to this
application. It should be appreciated however that the invention may have other
applications.
A mortice lock assembly includes a housing with a bolt that is movable relative
to the housing. When the mortice lock assembly is installed the bolt is
considered to be in an extended position when it projects from an edge of the
door. When the bolt is in the extended position and the door is closed the bolt
engages a strike on the door frame, which retains the door in a closed position.
Door furniture is located on opposing faces of the door panel, on the inner and
outer side, and generally includes a hand engagable member such as a turn
knob or lever handle. Each knob or handle (hereinafter referred to generally as
handle) interacts with a rotatable hub located within the housing whereby
rotation of the hub results in retraction of the bolt from the extended position. A
locking means is provided that, when in a locked condition, prevents the bolt
from being moved from the extended position when the door is closed. The
locking means often interacts with the hub to achieve this function.
The locking means may be electrically powered and include a powered actuator
such as solenoid or motor that when energised adjusts the condition of the
locking means. Naturally the failure in the supply of power to the locking means
will have implications that vary depending upon the environment in which the
lock assembly is installed. In some environments it will be desirable that the
lock means adopt a locked condition when there is a power failure, whereas in
other environments it will be desirable that the lock means adopt an unlocked
condition when there is a power failure. Where the one lock assembly is
adjustable to satisfy both requirements such locks are considered to be
operating in a failsecure mode and failsafe mode respectively.
It is generally desirable that if adjustments need to be made to lock assemblies,
those adjustments can be made relatively easily. The lock assembly may be
supplied with factory settings that are not applicable for the environment in
which the lock assembly is to be installed, and as such they will need to be
adjusted by the installer. The adjustments often need to be made on site where
the lock assembly is being installed, and it is desirable that the adjustments be
able to be made with tools likely to be found on site. Furthermore whilst it is
possible to make fine adjustments to the lock assembly when on the locksmiths
premises, or in the factory, it can be difficult to make fine adjustments when on
site. This is particularly the case when the adjustments involve small elements
of the lock that are often difficult to grasp and easy to loose in the environment
of a building site. This is a problem with the type of adjustments that involve
disconnection of small fasteners, such as screws, and the relocation of those
screws to change the function.
The inner workings of a lock assembly are generally intricate, and this is
particularly the case where a powered actuator is involved. Electrically
controlled locks generally include the electronic circuitry to control the lock
within the lock assembly casing. The circuitry is designed with the
understanding that it will be protected within the housing, and has a low
tolerance to mistreatment. It is therefore preferable that once a lock assembly
has been assembled in the factory, the housing remains closed. Lock
manufacturers often provide a warranty on the basis that it is voided if the
housing is opened. Accordingly it is also desirable that if adjustments need to
be made to the lock function of the assembly, those adjustments can be made
without opening the housing.
It is therefore desirable to provide a lock assembly that is easily adjustable. It is
also preferably desirable that the lock assembly be easily adjustable between a
failsafe condition and a failsecure condition.
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.
According to this invention there is provided a mortice lock assembly for use
with a door including a housing for location at least partially within a cavity
formed in the door, a bolt movable relative to an extended position whereby it
extends out a front face of the housing, an inner hub and an outer hub that
interact with the bolt and are manually rotatable from an inner side and an outer
side respectively to move the bolt from the extended position, a lock means
including a detent means and a powered actuator for adjusting a condition of
the detent means between an active condition and an inactive condition
whereby the bolt is prevented and not prevented from moving from the
extended position respectively, a selector means that is adjustable between a
failsafe condition and a failsecure condition whereby in the event of failure of
supply of power to the powered actuator the detent adopts the inactive condition
and the active condition respectively, the selector means including a rotatable
member that is rotated through no more than 360° to adjust the condition of the
selector means.
It is preferred that the housing includes an opening for providing access to the
rotatable member allowing for adjustment of the selector means. It is further
preferred that the opening is on a side of the housing.
The mortice lock assembly preferably includes the detent means which interacts
with the inner hub and outer hub so that when the detent is in the active
condition the inner hub and or outer hub is prevented from rotation. It is
preferred that the detent means includes an inner pawl and an outer pawl that
interact with the inner hub and outer hub respectively, the inner pawl and outer
pawl preventing rotation of the inner hub and outer hub respectively when the
detent means is in the active condition. It is further preferred that the powered
actuator interacts with the detent means indirectly by a transmission means. It is
further preferred that the transmission means includes a rack member and a
pinion member whereby the rack member is moved on a substantially liner path
on operation of the powered actuator so as to rotate the pinion member. It is
further preferred that the rotatable member acts as a guide when the rack
member is moved along the liner path. It is still further preferred that the
transmission means includes a link member for linking the pinion to the detent
means. It is still further preferred that the link member is a bar that is movable
in a direction substantially perpendicular to the direction of movement of the
rack when moving along the liner path.
It is preferred that the rotatable member is manually rotated less than 360º to
adjust the condition of the selector means. It is further preferred that the
rotatable member engages with the rack member to act as a guide along the
liner path. It is still further preferred that the rotatable member includes a cam
surface that engages the rack member whereby rotation of the rotatable
member causes the rack member to move along an arcuate path as the
selector means adjusts between failsafe condition and the failsecure condition.
Alternatively it is preferred that the mortice lock assembly include a rotated
member that is driven by the rotatable member to rotate therewith, the rotatable
member having a cam surface that engages the rack member whereby rotation
of the rotated member causes the rack member to move along the arcuate path
as the selector means adjusts between failsafe condition and the failsecure
condition. It is preferred that the rotatable member drives the rotated member
indirectly by an idler gear.
It is preferred that the powered actuator includes a solenoid and a plunger that
is movable in response to supply of power to the solenoid.
It is preferred that the selector means is operable from outside the housing. It is
further preferred that the housing includes an aperture that provides access to
the rotatable member. It is still further preferred that the aperture is formed in a
side wall of the housing. It is still further preferred that the rotatable member
includes a formation that is accessible from a side of the housing, said
formation facilitating rotation of the rotatable member. It is still further preferred
that the formation is at least one groove in a face of the rotatable member to
facilitate transmission of torque to the rotatable member. It is still further
preferred that the rotatable member remains captured during adjustment of the
selector means.
It will be convenient to hereinafter describe the invention, according to various
aspects, by reference to a particular form of lock assembly including a linearly
movable latchbolt. Each aspect of the invention is also applicable to other forms
lock assemblies, including but not limited to a swing bolt.
Embodiments of the invention are described in detail in the following passages
of the specification which refer to the accompanying drawings. The drawings,
however, are merely illustrative of how the invention might be put into effect, so
that the specific form and arrangement of the various features shown is not to
be understood as limiting on the invention.
Figure 1 is a side elevation view of a standard back set mortice lock assembly
according to one embodiment of this invention.
Figure 2 is the mortice lock assembly from Figure 1 in an exploded view.
Figure 3 is the actuator subassembly from Figure 2 illustrated in an exploded
view.
Figure 4 is a side elevation view of the actuator subassembly from Figure 2 with
at least part of the casing removed to show the detent in an inactive condition
and the selector in a failsafe condition.
Figure 5 is an isometric view of the actuator subassembly from Figure 4.
Figure 6 is a side elevation view of the actuator subassembly from Figure 4 with
the detent in the active condition and the selector means in the failsafe
condition.
Figure 7 is an isometric view of the actuator subassembly from Figure 6.
Figure 8 is a side elevation view of the actuator subassembly from Figure 4 with
the detent in the inactive condition and the selector means in a failsecure
condition.
Figure 9 is an isometric view of the actuator subassembly from Figure 8.
Figure 10 is a side elevation view of the actuator subassembly from Figure 8
with the detent in an active condition and the selector means in a failsecure
condition.
Figure 11 is an isometric view of the actuator subassembly from Figure 10.
Figure 12 is a side elevation view of a short back set mortice lock assembly
according to another aspect of this invention.
Figure 13 is the mortice lock assembly from Figure 12 in an exploded view.
Figure 14 is the actuator subassembly from Figure 13 in an exploded view.
Figure 15 is a side elevation view of the actuator subassembly from Figure 13
with at least part of the casing removed to show the detent in an inactive
condition and the selector in a failsafe condition.
Figure 16 is an isometric view of the actuator subassembly from Figure 15.
Figure 17 is a side elevation view of the actuator subassembly from Figure 15
with the detent in the active condition and the selector means in the failsafe
condition.
Figure 18 is an isometric view of the actuator subassembly from Figure 17.
Figure 19 is a side elevation view of the actuator subassembly from Figure 15
with the detent in the inactive condition and the selector means in a failsecure
condition.
Figure 20 is an isometric view of the actuator subassembly from Figure 19.
Figure 21 is a side elevation view of the actuator subassembly from Figure 15
with the detent in an active condition and the selector means in a failsecure
condition.
Figure 22 is an isometric view of the actuator subassembly from Figure 21.
The lock assembly 1 illustrated in Figure 1 is a mortice lock assembly 1, and in
particular an electrically controlled standard back set mortice lock assembly.
The assembly 1 includes a housing 2 which is intended to be located within a
mortice cavity formed within a side edge of a door (not shown). A plug 3 and
cable 4 arrangement is illustrated at the top left hand corner of the housing 2
which is intended to be connected with a power supply (not shown) and access
control arrangement (not shown) located remote from the lock assembly 1. The
access control arrangement may take any suitable form including proximity card
readers or like devices. Such devices send a signal to the lock assembly 1
when access is to be granted so as to adjust the condition of the lock assembly.
This adjustment will be explained in greater detail with reference to latter
illustrations.
Figure 1 illustrates a primary bolt head 5 (hereinafter bolt) extending out from a
front face of the housing 2 which is intended to interact with a strike (not shown)
installed in a door frame surrounding the door. The bolt forms part of a bolt
sub-assembly which will be described in greater detail with reference to Figure
2. Figure 1 also illustrates an auxiliary bolt 6 which forms part of a deadlocking
subassembly 7 which interacts with the bolt 5 and operates in a manner that will
be understood by those in the industry.
The lock assembly housing 2 includes an aperture 8 in a lower left hand region
which exposes part of an actuator subassembly 9. In particular a spindle
recess 10 formed in the actuator subassembly 9 is exposed. The spindle
recess 10 is formed to receive a spindle (not shown) associated with door
furniture including a turn knob or handle, which in use is operable on an inner or
outer side of the door. The shape and location of the spindle recess 10 may
vary from that illustrated, and in particular a variation in location will be
described in greater detail with reference to Figure 12 later in the specification.
Figure 1 also illustrates a member 11 adjacent the aperture 8 which forms part
of a selector means 12 for selecting the way the lock assembly 1 functions in
the event of failure of supply of power to the lock assembly 1. The member 11
illustrated includes a slotted face for interacting with a flathead screwdriver or
the like so as to facilitate adjustment of the member. The member 11is
rotatable between a failsafe condition and a failsecure condition, which in the
event of a power failure results in the lock assembly adopting an unlocked and
locked condition respectively. The rotatable member 11 includes an arrowhead
on the face to provide a visual indication of the condition of the selector means
12. It is intended that the rotatable member 11 illustrated rotate through 180°
when adjusting the condition so that the arrow head points towards a front or
rear of the housing 2. The use of the arrowhead and degree of rotation is
merely preferred in that the rotatable member 11 could achieve a similar
function without the same degree of rotation. It is preferred however that the
degree of rotation be less the 360°, and the rotatable member 11 remains
captured during adjustment as this ensures the adjustment is relatively simple.
Referring now to Figure 2 which illustrates the lock assembly 1 in an exploded
form and in a reverse view from Figure 1. Figure 2 illustrates the housing 2
formed by three pieces namely a base 13, cover 14, and cap 15. The base 13
and cover 14 attach to one another by a plurality of screws 16 with the cap 15
detachably fitting to an upper side of the base 13 and cover 14. The cap 15 has
a window for LED plugs and the cables 4 pass through it.
The lock assembly 1 includes an electronic subassembly 17 including a circuit
board 18, the cables 4 and the plug 13 to at least provide power to the actuator
subassembly 9. The electronic subassembly 17 may also provide additional
functions which do not form part of the claimed invention.
The lock assembly 1 illustrated in Figure 2 includes the dead locking
subassembly 7 and a bolt subassembly. The bolt subassembly includes the
bolt and a drawbar portion 20 with a biasing spring 21 acting between the
drawbar potion 20 and the deadlocking subassembly 7. The manner in which
the bolt subassembly 19 and dead latch subassembly 7 functions and operates
within the mortice lock assembly 1 will be understood by those in the industry.
In particular it will be understood that the bolt subassembly 19 is biased by the
spring 21 to urge the bolt 5 towards an extended position when the bolt 5 is in
the extended position it projects through an aperture 22 in a front wall 23 of the
housing 2, and that the actuator subassembly 9 is operable to cause the bolt 5
to move from the extended position towards a retracted position. Once in the
retracted position the bolt 5 is substantially within the housing 2. Whilst the
invention is described with reference to a bolt that moves in a substantially
rectilinearly path, it is to be understood that the invention may also be
applicable to use with bolts that move along the path other than rectilinearly
including but not limited to swing bolts. Furthermore whilst the invention is
described and illustrated with reference to a latch bolt, it should be appreciated
that the invention also applies to dead bolts.
Referring now to Figure 3 which illustrates the actuator subassembly 9 in an
exploded form to illustrate a number of components between an inner casing
portion 24 and an outer casing portion 25 (which combine to form the actuator
casing). The components include an inner hub 26 and an outer hub 27 which
each include a spindle recess 10 hereinbefore described with reference to
Figure 1. The inner hub 26 and outer hub 27 are both formed with a boss 28
(only the inner hub boss is visible in Figure 3) which locate in an aperture 29
formed in the inner casing portion 24 and outer casing portion 25 respectively.
Each boss 28 provides a bearing surface against which the inner hub 25 and
outer hub 27 rotate relative to the inner casing portion 24 and outer casing
portion 25.
The inner hub 26 and outer hub 27 are spaced by an annular disc 30 on which
is located a hub lever 31. Both the inner hub 28 and outer hub 27 include a lug
32 (only the lug on the outer hub 27 is visible) which interacts with the hub lever
31, so that rotation of either the inner hub 26 or outer hub 27 causes rotation of
the hub lever 31 about the annular disc 30. The hub lever 31 includes a free
end 33, and it can be appreciated from Figure 2 that the free end 33 projects
outside the actuator casing. The free end 33 of the hub lever 33 interacts with
the bolt subassembly so that movement of the free end results in engagement
and movement of the drawbar 20 to retract the bolt subassembly within the lock
assembly housing 2.
Figure 3 also illustrates a hub monitor PCB assembly 34 which is fixed in
position relative to the inner casing portion 24 and outer casing portion 25. The
monitor PCB 34 interacts with the hubs 26, 27 to monitor the position of the
lever 31 relative to the inner casing portion 24 and outer casing portion 25 so as
to indicate whether the inner hub 26 or outer hub 27 has retracted the bolt
assembly 19.
Figure 3 also illustrates a guide block 35 that locates within a zone 36 formed
between the inner casing portion 24 and outer casing portion 25. The guide
block 35 is urged to act against a toe portion 37 of the inner hub 26 and outer
hub 27 via the influence of a spring 38. This urges the inner hub 26 and outer
hub 27, and as a result the lever 31 to adopt an at rest position as illustrated in
Figure 2.
The lock assembly 1 according to the invention includes a lock means 39 to
prevent movement of the bolt 5 from the extended position. The lock means
may take any form, and the lock means illustrated is merely preferred. The lock
means illustrated includes a powered actuator 40 in the form of a solenoid. The
powered actuator 40 may take a form other than a solenoid. The solenoid 40
illustrated includes a plunger 41 which is biased towards an extended position
via a solenoid spring 42, and caused to move to a retracted position when
power is suppled to a solenoid body 43. The form of solenoid 40 and in
particular its response to power may vary.
The lock means 39 also includes a detent means 44 that interacts with the inner
hub 26 and outer hub 27. The detent means 44 illustrated includes an inner
pawl 45 and outer pawl 46 that interact with the inner hub 26 and outer hub 27
respectively. The manner in which they interact will be described in greater
detail with reference to later illustrations.
The inner pawl 45 and outer pawl 46 preferably pivot between an active position
and inactive position whereby they prevent and do not prevent rotation of the
inner hub 26 and outer hub 27 respectively. This pivoting action may be
achieved in any suitable manner and in the embodiment illustrated in Figure 3
each of the inner pawl 45 and outer pawl 46 include an aperture 47 for locating
each pawl 45, 46 on a shaft 48 formed with the lower casing portion 25. A leaf
spring 49 is provided for urging each of the inner pawl 45 and outer pawl 46 to
rotate in an anticlockwise direction. This urges the inner pawl 45 and outer
pawl 46 to interact with a locking bar 50. More specifically each of the inner
pawl 45 and outer pawl 46 includes a toe portion 51 which is locatable within a
recess 52 formed in the locking bar 50. This will enable the inner pawl 45 or
outer pawl 46 to rotate about the shaft 48 when the locking bar 50 is slid relative
to the casing 24, 25.
It is preferred that the power actuator 40 interact with the detent means 44
indirectly by a transmission means 53. Any form of transmission means 53 may
be suitable and the embodiment illustrated is merely one derived form. The
transmission means illustrated in includes a rack member 54 and a pinion
member 55. The rack member 54 is moveable in a rectilinear motion by
operation of the powered actuator 40. The pinion member 55 is rotatable about
the shaft 48 supporting the inner pawl 45 and outer pawl 46. The rack member
54 and pinion member 55 include a gear train so that rectilinear movement of
the rack 54 causes rotational movement of the pinion 55. The gear train will be
described in greater detail with reference to better illustration. The pinion 55
includes a toe portion 56 which locates within the recess 52 formed in the
locking bar 50 so that rotation of the pinion member 55 causes the locking bar
50 to slide. Whilst the locking bar 50 illustrated is acting in the form of a link
member between the pinion 55 and the detent 44, the shape and type of
movement of the locking bar 50 may vary, provided it provides a link between
the pinion 55 and the detent means 44.
Figure 3 also illustrates the rotatable member 11, which is locatable in the
aperture 57.
Figure 4 is a side elevation view of the actuator subassembly 9 shown in a
partially assembled view. In particular it should be noted that the guide block,
biasing spring 38, monitor PCB 34, inner pawl 45 and the inner casing
portion 24 have been removed to more easily explain the operation of the
remaining components. Figure 4 illustrates the detent 44 in an inactive
condition, and in which condition the inner hub 26 or outer hub 27 (obscured in
Fig. 4) is freely rotatable in order to cause movement of the hub lever 31. In
Figure 4 a shoulder portion 58 of the outer pawl is illustrated being distanced
from a heel portion 59 of the outer hub 27 (see Fig. 5). In contrast Figure 6
illustrates the detent in an active condition whereby the shoulder 58 of the outer
pawl 46 is positioned to engage the heel portion 49 of the outer hub 27. This
prevents rotation of the outer hub 27. This rotation of the outer pawl 46 is
achieved by retraction of the plunger 41 within the solenoid body 43 causing
retraction of the rack 48. The gear train includes upper teeth 60 of the rack 54
engage upper teeth 61 on the pinion 55 to rotate the pinion 55 about the shaft
48. The toe 56 of the pinion 55 engages and slides the locking bar 50 to inturn
cause the outer pawl 46 to rotate. It can be appreciated that when comparing
Figures 5 and 7 that the toe portions 56, 51 of the pinion 55 and outer pawl 46
are located within the recess 52 formed in the locking bar 50.
It ought to be appreciated from Figures 4 to 7 that with the rack 54 positioned
relative to the pinion 55 the detent 44 is moved to an inactive position when the
supply of power to the solenoid body 43 ceases. As a result in the event of a
power failure the detent 44 will move to an inactive position allowing either hub
26, 27 to be rotated to retract the bolt 5, and egress of persons through the
doorway. The selector means 12 is considered to be in a failsafe condition
when the lock means 39 is capable of operating in this manner.
In order to adjust the selector means 12 from the failsafe condition to a
failsecure condition, the supply of power to solenoid 43 needs to cease so as to
allow rotation of the rotatable member 11. This causes the rack 54 to travel
along a substantially arcuate path from the position illustrated in Figures 4 to 7
to adopt the position illustrated in Figures 8 to 11. In particular when comparing
Figure 4 with Figure 8 it can be noted that the rotatable member 11 includes a
cam surface 62 which engages the rack member 54 so that rotation of the
rotatable member 11 causes the rack 54 to disengage from the teeth of the top
of the pinion 61 and engage with teeth 63 on the bottom of the pinion 55. Once
the rack 54 is in the position illustrated in Figures 8 to 11, the selector 12is
considered to be in the failsecure position. More specifically it can be
appreciated from Figure 10 and 11 that once power is ceased to be supplied to
the solenoid 43 the rack 54 rotates the pinion 55 to move the detent 44 to an
active position. Whereas the supply of power to the solenoid 43 as illustrated in
Figures 8 and 9 causes movement of the rack 54 to rotate the pinion 55 to
move the detent 44 to an inactive position.
It can be noted from Figures 8 and 10 that the rack 54 moves in a linear
direction positioning response to operation of the solenoid 40. The rack 54 is
guided in this linear movement by the cam surface 62 of the rotatable member
11 and an upper guide 64 or lower guide 65 depending upon whether the
selector 12 is in the failsecure or failsafe condition respectively. Figure 8
illustrates the rack being guided by the upper guide 64, whereas Figure 4
illustrates the rack being guided by the lower guide 65.
Referring now to Figure 12 which illustrates another embodiment according to
the invention. The description of this embodiment will use like reference
numerals with the prefix of “10” to describe like features from the previous
embodiment illustrated in Figures 1 to 11. Figure 12 illustrates a short backset
mortice lock assembly 101 including failsafe/failsecure selector 112 and spindle
recess 112 closer to the front wall 123 of the housing 102. The difference being
with this embodiment the depth of the housing 102 is less than the previous
embodiment so as to allow the lock assembly 101 to fit in a door having a
limited space for backset. In particular a short backset lock assembly 101 may
be used in a door framed with aluminium extruded section which tend to be
relatively short in depth.
Referring now to Figure 13 which illustrates in summary a housing 102 being
formed from a cover 114, a base 113 and a cap 115. The housing houses an
electronic subassembly 117, an actuator subassembly 109, a deadlock
subassembly 107 and a bolt assembly 119. It should be noted from Figure 13
that the length of the drawbar 120 of the bolt assembly 119 is substantially
shorter than the drawbar 120 on the standard backset lock assembly 1 and the
casing of the actuator subassembly 109is of less width than the casing in the
actuator subassembly 9 of the standard backset lock assembly 1. However the
features as illustrated in figure 13 operate in substantially the same manner as
described with reference to the standard backset mortice lock assembly 1, with
the exception of the way the selector means interacts with the detent means
which will be described in greater detail with reference to later illustrations.
Figure 14 illustrates an inner casing portion 124 and an outer casing portion 125
with the inner hub 126, hub lever 131, hub spacer 130, outer hub, biasing spring
138, guide head 135, inner pawl 145, pinion 155, outer pawl 146, leaf spring
149, locking bar 150, powered actuator 140and monitor PCB 134 all operating
in the same manner as described with reference to the standard backset
mortice lock assembly 1 illustrated in Figure 2. However given that the inner
casing portion 124 and outer casing portion 125 are of shorter depth than the
standard backset mortice lock assembly 1, the way in which the detent 144
interacts with the powered actuator 140 needs to be adjusted. Furthermore
adjustments have been made to the selector means 112 so as to achieve the
same function in a shorter depth casing.
It can be noted from Figure 12 that only a single rotatable member 111 is visible
from the side of the housing 102. The rotatable member 111 has the same
groove formation formed in its face to facilitate rotation thereof. However the
selector means 112 in this embodiment also includes a rotated member 166
and an idler gear 167 acting between the rotated member 166 and rotatable
member 111 (see Figure 14). The rotatable member 111 and rotated member
166 both include a cam surfaces 162 located on a shaft portion which locates
within openings 168 on the left and right hand side of the rack 145 respectively.
Referring now to Figures 15 and 16 which illustrates the actuator assembly 108
in the same condition to that illustrated in Figures 4 and 5 with the selector
means in a failsafe condition and the detent 144 in an inactive condition. The
solenoid 140 in Figure 15 has the plunger 141 extended to the right hand side
as there is no power supply to the body 143 of the solenoid 140. This in turn
has forced the rack 154 to the right hand side, rotated the pinion 155to slide the
locking bar down 150, and draw the outer pawl shoulder 158 away from the
heel 159 of the outer hub 127. In contrast, Figures 17 and 18 illustrate the
plunger 141 of the solenoid 140 retracted as a result of power being supplied to
the solenoid body 143. This moves the rack 154 to the left hand side, rotates
the pinion 155 which in turn slides the locking bar 150 up, to rotate the shoulder
158 of the outer pawl 146 into the path of rotation of the outer hub 127.
When comparing Figures 15 to 18 with Figure 19 to 22 it can be noted that the
selector means 112 has been adjusted to the failsecure condition. In particular
rotation of the rotatable member 111 has caused rotation of the rotated member
166 via the idler gear (obscured) to cause the cam surface of each of the
rotatable member 111 and rotated members 168 to engage and move the rack
154 up. This causes the rack 154 to disengage from the gear teeth 161 on the
top of the pinion 155 (see Figure 15) and engage with the gear teeth on the
bottom of the pinion 155 (see Figure 19). Once the gear change has been
made, the detent 144 can be adjusted in the same manner as described with
reference to Figures 15 to 18.
It ought to be appreciated from the foregoing description that the lock assembly
as hereinbefore described allows for a relatively simple adjustment to achieve
alteration of the condition of the lock assembly between a failsafe condition and
a failsecure condition. It is particularly advantageous that this adjustment can
be made without having to disassemble the lock assembly, and that the
components required to be adjusted remain captured during the alteration
process.
Various alternations and/or additions may be introduced to the mortice lock
assemblies as hereinbefore described without departing from the spirit or ambit
of the invention.
Future patent applications may be filed in Australia or overseas on the basis of
or claiming priority from the present application. It is to be understood that the
following provisional claims are provided by way of example only, and are not
intended to limit the scope of what may be claimed in any such future
application. Features may be added to or omitted from the provisional claims at
a later date so as to further define or re-define the invention.
Claims (22)
1. A mortice lock assembly for use with a door including a housing for 5 location at least partially within a cavity formed in the door, a bolt movable relative to an extended position whereby it extends out a front face of the housing, an inner hub and an outer hub that interact with the bolt and are manually rotatable from an inner side and an outer side respectively to move the bolt from the extended position, a lock means including a detent means and 10 a powered actuator for adjusting a condition of the detent means between an active condition and an inactive condition whereby the bolt is prevented and not prevented from moving from the extended position respectively, a selector means that is adjustable between a failsafe condition and a failsecure condition whereby in the event of failure of supply of power to the powered actuator the 15 detent adopts the inactive condition and the active condition respectively, the selector means including a rotatable member that is rotated through no more than 360º to adjust the condition of the selector means.
2. A mortice lock assembly according to claim 1 where the housing includes 20 an opening for providing access to the rotatable member allowing for adjustment of the selector means.
3. A mortice lock assembly according to claim 2 wherein the opening is on a side of the housing.
4. A mortice lock assembly according to any one of the preceding claims wherein the detent means interacts with the inner hub and outer hub so that when the detent is in the active condition the inner hub and or outer hub is prevented from rotation..
5. A mortice lock assembly according to claim 4 wherein the detent means includes an inner pawl and an outer pawl that interact with the inner hub and outer hub respectively, the inner pawl and outer pawl preventing rotation of the inner hub and outer hub respectively when the detent means is in the active condition.
6. A mortice lock assembly according to any one of the preceding claims 5 wherein the powered actuator interacts with the detent means indirectly by a transmission means.
7. A mortice lock assembly according to claim 6 wherein the transmission means includes a rack member and a pinion member whereby the rack member 10 is moved on a substantially liner path on operation of the powered actuator so as to rotate the pinion member.
8. A mortice lock assembly according to claim 7 wherein the rotatable member acts as a guide when the rack member is moved along the liner path.
9. A mortice lock assembly according to claim 7 or 8 wherein the transmission means includes a link member for linking the pinion to the detent means. 20
10. A mortice lock assembly according to claim 9 wherein the link member is a bar that is movable in a direction substantially perpendicular to the direction of movement of the rack member when moving along the liner path.
11. A mortice lock assembly according to any one of the preceding claims 25 wherein the rotatable member is manually rotated less than 360º to adjust the condition of the selector means.
12. A mortice lock assembly according to any one of claims 7 to 10 wherein the rotatable member engages with the rack member to act as a guide along 30 the liner path.
13. A mortice lock assembly according to claim 12 wherein the rotatable member includes a cam surface that engages the rack member whereby rotation of the rotatable member causes the rack member to move along an arcuate path as the selector means adjusts between failsafe condition and the failsecure condition.
14. A mortice lock assembly according to any one of claims 7 to 10 including 5 a rotated member that is driven by the rotatable member to rotate therewith, the rotatable member having a cam surface that engages the rack member whereby rotation of the rotated member causes the rack member to move along the arcuate path as the selector means adjusts between failsafe condition and the failsecure condition.
15. A mortice lock assembly according to claim 14 wherein the rotatable member drives the rotated member indirectly by an idler gear.
16. A mortice lock assembly according to any one of the preceding claims 15 wherein the powered actuator includes a solenoid and a plunger that is movable in response to supply of power to the solenoid.
17. A mortice lock assembly according to any one of the preceding claims wherein the selector means is operable from outside the housing.
18. A mortice lock assembly according to claim 17 wherein the housing includes an aperture that provides access to the rotatable member.
19. A mortice lock assembly according to claim 18 wherein the aperture is 25 formed in a side wall of the housing.
20. A mortice lock assembly according to any one of the preceding claims wherein the rotatable member includes a formation that is accessible from a side of the housing, said formation facilitating rotation of the rotatable member.
21. A mortice lock assembly according to claim 20 wherein the formation is at least one groove in a face of the rotatable member to facilitate transmission of torque to the rotatable member.
22. A mortice lock assembly according to any one of the preceding claims wherein the rotatable member remains captured during adjustment of the selector means.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011900990A AU2011900990A0 (en) | 2011-03-18 | Electronically controlled mortice lock assembly | |
AU2011900990 | 2011-03-18 | ||
PCT/AU2012/000262 WO2012126039A1 (en) | 2011-03-18 | 2012-03-15 | Electrically controlled mortice lock assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ614621A NZ614621A (en) | 2015-08-28 |
NZ614621B2 true NZ614621B2 (en) | 2015-12-01 |
Family
ID=
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