Electric hub lock assembly

Abstract

A hub lock assembly for a door includes a first housing attached to an inner surface of the door, a latch movable between an extended latched position and a retracted released position, a first actuator mechanism including a knob operable from an inside of the door to move the latch. An electronic lock device having a second housing is attached to an outer surface of the door, wherein an elongated portion of the second housing extends through an aperture in the door toward the first housing. The electronic lock device has a second actuator mechanism connected to the latch and is operable from outside of the door to retract the latch. A battery for powering the electronic lock device is disposed within or on the elongated portion of the second housing. Both the gear motor and a power source within the elongated portion of the second housing are disposed entirely within the door.

Description

Technical Field

[0001] This invention relates to a rim lock assembly for doors. In particular, the invention is described with reference to an electronic lock device that can replace or modify a conventional door lock arrangement without requiring further modifications to the door. Background Technology

[0002] A hub lock is a locking device that is attached to the surface of a door. Many hub locks used on exterior doors today are called "night latches." A night latch is a lock that is fitted onto the door surface and operated from the outside of the door with a key and from the inside (i.e., the "security side") with a knob.

[0003] In Australia, one of the most common mechanical locks on older residential front doors (40mm thick) is the "60mm backset hub lock," also known as a deadbolt or night bolt. A well-known assembly of this type of mechanical lock in the Australian market is the LOCKWOOD™ 001. Like some other similar locks, this lock's cylinder passes through a hole on the outside of the door, and its linkage engages with a mounting plate assembly installed on the inside of the door. Figures 1 to 4 A door 1 with this lock assembly 2 is shown, which includes an inner body (housing) 3 fitted on its inner side 1a. A knob 4 is operably mounted to the body 3 such that actuation by a user (not shown) retracts a latch 5. The lock assembly 2 also has a key-actuated outer lock cylinder 6 fitted to the outer side 1b of the door 1. The latch 5 is operably engaged with a striker (not shown) fitted to a frame (not shown) of the door 1. The key-actuated outer lock cylinder 6 extends into the door 1 through a 32 mm hole, and a linkage (not shown) interconnects the lock cylinder 6 with the latch 5. The lock cylinder 6 and its surrounding lock ring protrude from the outer surface of the door 1 by approximately 5 mm to 6 mm.

[0004] AU2011224106A (ASSA ABLOY Australia Pty Ltd) describes a lock assembly with an electronically controlled actuator. This prior art electronically controlled lock is sold in Australia under the brand LOCKWOOD 001TOUCH. TMSales. This lock uses mechanical manual knobs (actuators) on both sides of the door to open and close. The electronic lock mechanism includes a numeric keypad and an RFID reader. To turn the manual knob on the front of the door, the lock is electrically actuated by entering an access code into the numeric keypad or by bringing an associated RFID card close to the lock. When the correct access code or RFID card is used, the electronic lock mechanism is inactive, which energizes the motor inside the clutch. When the clutch is engaged, rotation of the manual knob on the front of the door causes the linkage to rotate, resulting in the latch retracting. The part of the lock that is mounted to the rear of the lock includes a housing and a cover. The housing houses four AA alkaline batteries to power the electronic lock mechanism. At the bottom of the front side of the lock, there is a 9V battery connection. If the four AA alkaline batteries discharge, the lock can be powered by a 9V battery.

[0005] This existing lock technology has several drawbacks. First, while it can be retrofitted to existing doors with a 60mm rear hole, it requires drilling a smaller hole in the door to run the wire loop from the "outer" lock section to the "inner" lock section housing the battery pack. It also requires additional screws to mount the battery housing to the door. During retrofitting, tools are needed to drill the small hole, and tenants may not be able to retrofit this lock DIY or have it done by a locksmith without permission from the landlord or property management, as it requires modification to the door (drilling another hole). Second, this lock is quite large and bulky on both sides of the door, as it houses the user interface (keyboard) and front knob on the outside, while the battery housing and the main body with the rear knob are on the inside. For example, the components on the front door, namely the manual knob (including the keyboard and RFID reader) extending from the front housing, extend approximately 45mm from the outer surface of the door. This large size makes this existing lock very expensive to manufacture. Third, the rear of the lock has a cover that is easily removable, allowing access to the battery. This is undesirable because children, roommates in shared apartments, or short-term visitors could easily remove the batteries for their own use.

[0006] Another US patent, 10683677 (Funamura et al.), relates to a so-called smart lock system used with a door assembly. First, it is not a common lock arrangement but a very expensive design, with the motor and gear assembly housed inside the door. One embodiment utilizes a smartphone for operation via an internet-based cloud service. It is not fastened to the body of the inner door with fasteners, therefore it is neither a hub lock assembly nor can it be retrofitted into one. The motor and gear assembly, occupying the interior space of the door, is quite complex, and it has a battery tray (bracket) protruding from the inside of the door. Therefore, the battery in this lock, like the aforementioned AU2011224106A lock, is easily accessible because the battery tray extending from the inside of the door can be easily removed by turning the tray clockwise. Furthermore, Otto LLC's anticipated product, a commercial cloud-based service embodiment of this prior art, was launched in 2018 and immediately suspended. This was partly due to the cost of implementing a cloud-based service, and partly due to the proposed retail price of approximately $700. This type of door lock system is not suitable for common, inexpensive access control applications provided by hub lock components.

[0007] The present invention provides a hub lock assembly that overcomes at least one problem associated with the prior art. Summary of the Invention

[0008] In a first aspect, the invention includes a hub lock assembly for use on a door, the hub lock assembly including a first housing for attachment to an inner surface of the door; a latch movable relative to a side of the first housing between an extended locked position and a retracted released position; a first actuator mechanism including a first manually engaged member operable from the inside of the door to move the latch from the extended position; and an electronic lock device including a second housing for attachment to an outer surface of the door, at least one elongated portion of the second housing extending toward the first housing through a hole in the door, the electronic lock device having a second actuator mechanism operably connected to the latch. Furthermore, the electronic lock device is operable from the outside of the door, such that when the electronic lock device is activated, the second actuator mechanism retracts the latch, thereby opening the door. The device includes a power supply unit for powering at least one battery for the electronic lock device, and the second actuator mechanism is disposed within or on the elongated portion of the second housing. The second actuator mechanism includes a geared motor operably connected to the latch via a connector rod, and both the geared motor and the at least one battery within the elongated portion of the second housing are entirely disposed within the door.

[0009] Preferably, the at least one battery of the power supply device has an associated battery holder, and both the battery and its associated battery holder are completely housed within the door.

[0010] Preferably, the at least one battery and the geared motor are arranged vertically.

[0011] Preferably, the electronic lock device includes an NFC reader having a sensor surface configured to be adjacent to the outer surface of the door, and the NFC reader is operatively connected to the gear motor via at least one control PCB.

[0012] Preferably, the second housing of the electronic lock device includes a collar portion disposed at one end of the elongated portion, and when the electronic lock device is assembled to the door, the collar portion abuts against the outer surface of the door, the collar portion surrounding the sensor surface of the NFC reader.

[0013] Preferably, the second actuator mechanism of the electronic lock device can be actuated to retract the latch by means of an RFID card swipe operably interacting with the second actuator mechanism via the sensor surface of the NFC reader or by a smartphone wirelessly paired with the electronic lock device.

[0014] Preferably, the gear motor is an N20 micro gear motor.

[0015] Preferably, the battery is a CR2 battery.

[0016] Preferably, an external power source can be connected to the electronic lock device through a port located at or near the collar portion of the second housing.

[0017] In a first aspect, the invention includes an electronic lock device for retrofitting a 60mm rear-mounted hub lock assembly to a door having an opening through which the hub lock assembly is mounted on both sides of the door, the hub lock assembly including a first housing for attachment to an inner surface of the door; a latch movable relative to a side of the first housing between an extended locked position and a retracted released position; a first actuator mechanism including a first manually engageable member operable from the inside of the door to move the latch from the extended position; and a keyed cylinder and a cylinder ring, the keyed cylinder extending from an outer surface of the door into the opening and connected to the first actuator mechanism via a first connector rod, such that actuation of the keyed cylinder by a key causes rotation of the first connector rod and actuation of the first actuator mechanism to retract the latch, the retrofitting including replacing the keyed cylinder and associated cylinder ring with the electronic lock device and a second connector rod. The electronic lock device includes a connector rod, comprising a second housing for attachment to an outer surface of a door, wherein at least one elongated portion of the second housing extends through the hole in the door toward a first housing, the electronic lock device having an electrically operated second actuator mechanism operably connected to the latch via the associated second connector rod, and the electronic lock device being operable from the outside of the door such that when the electronic lock device is activated, the second actuator mechanism retracts the latch, thereby allowing the door to be opened; and a power supply device including at least one internal battery for powering the electronic lock device, the power supply device being disposed together with the second actuator mechanism within or on the elongated portion of the second housing, wherein the second actuator mechanism includes a geared motor operably connected to the latch via the connector rod, and wherein both the geared motor and the power supply within the elongated portion of the second housing are entirely disposed within the door.

[0018] Preferably, the at least one battery of the power supply device has an associated battery holder, and both the at least one battery and its associated battery holder are completely disposed within the door.

[0019] Preferably, the at least one battery and the geared motor are arranged vertically.

[0020] Preferably, the electronic lock device includes an NFC reader having a sensor surface disposed adjacent to the outer surface of the door, and the NFC reader is operatively connected to the gear motor via at least one control PCB.

[0021] Preferably, the second housing includes a collar portion disposed at one end of the elongated portion, and when the electronic lock device is assembled to the door, the collar portion abuts against the outer surface of the door, the collar portion surrounding the sensor surface of the NFC reader.

[0022] Preferably, when the NFC reader and collar portion is retrofitted to the door, the NFC reader and collar portion has the same or only slightly more protrusion as the keyed lock cylinder and lock cylinder ring it replaces.

[0023] Preferably, the second actuator mechanism of the electronic lock device can be actuated to retract the latch by means of an RFID card swipe operably interacting with the second actuator mechanism via the sensor surface of the NFC reader or by a smartphone wirelessly paired with the electronic lock device.

[0024] Preferably, the gear motor is an N20 micro gear motor.

[0025] Preferably, the battery is a CR2 battery.

[0026] Preferably, an external power source can be connected to the electronic lock device through a port located at or near the collar portion of the second housing. Attached Figure Description

[0027] Figure 1 This is a front perspective view of a door equipped with a rear-mounted hub lock using existing technology.

[0028] Figure 2 yes Figure 1 Rear perspective view of the door and existing rear hub lock.

[0029] Figure 3 yes Figure 1 Enlarged front perspective detail of the existing technology's rear hub lock and door.

[0030] Figure 4 yes Figure 1 Enlarged rear perspective detail of the existing technology's rear hub lock and door.

[0031] Figure 5 This is a perspective view of the electronic lock device with connector rod of the hub lock assembly used on a door according to the present invention.

[0032] Figure 6 yes Figure 5 The diagram shows the electronic lock device and connector rod.

[0033] Figure 7 yes Figure 5 The front view of the electronic lock device shown.

[0034] Figure 8 yes Figure 5 An exploded view of the electronic lock device and connector rod shown.

[0035] Figure 9 This is a partial front perspective view of the door, showing that the inner surface of the door is fitted with a lock body, and Figure 5 The electronic lock device shown was removed from it, and the connector rod was not present.

[0036] Figure 10 This is a partial front perspective view of a door equipped with the hub lock assembly of the present invention.

[0037] Figure 11 This is a partial rear perspective view of a door equipped with the hub lock assembly of the present invention. Detailed Implementation

[0038] In this specification, the term "hub lock" refers to a lock mounted on a door and includes a body (housing) that is fastened to the inner door by fasteners. Therefore, the term "hub lock assembly" refers to an assembly used for such a hub lock.

[0039] Figures 5 to 11 A hub lock assembly 20 is depicted for use on a 40mm thick door 10, which has an inner (inner) surface 10a and an outer (outer) surface 10b. A hole 7 of approximately 32mm is provided in the door 10, which is located 60mm behind its edge.

[0040] The hub lock assembly 20 has a body (first housing) 22 that is fitted to the inner surface 10a of the door 10, adjacent to the hole 7. Similar to... Figure 4 The body 22 of the “conventional lock body” shown has a knob 24 operably mounted thereon. The knob 24 forms part of a first actuator mechanism operably connected to the latch 25.

[0041] The latch 25 is movable relative to one side of the body 22 between an extended locked position and a retracted released position. A first actuator mechanism (including knob 24) moves the latch 25 from the extended locked position to the retracted released position.

[0042] The “electronic lock device” 50 includes an electronic lock housing (second housing) 26 that houses electronic components and a second actuator mechanism, namely a battery-powered motor 30, for actuating a connector rod 40, which is operatively connected to the first actuator mechanism in the body 22.

[0043] The electronic lock housing 26 has an elongated portion 26a and an annular collar portion 26b disposed at one end of the elongated portion 26a.

[0044] The elongated portion 26a serves as a "bracket" to support the motor 30 and the printed circuit boards (PCBs) 31a and 31b. The battery holder 32, which supports the battery 33, is fastened from above to the elongated portion 26a by screws 37, thereby covering the internal components housed within the elongated portion 26a. In effect, the battery 33 (in the battery holder 32) and the motor 30 are arranged vertically.

[0045] A near-field communication (NFC) reader 34 is mounted to the collar portion 26b of the electronic lock housing 26, such that it has an outward-facing sensor surface 35 adjacent to the outer surface 10b of the door 10. The NFC reader 34 is connected to PCBs 31a and 31b, which in turn are connected to the motor 30. A replaceable battery 33 located in the battery holder 32 provides the necessary power to the PCBs 31a and 31b and the motor 30.

[0046] When the electronic lock housing 26 of the electronic lock device 50 is assembled to the door 1, the elongated portion 26a (i.e., the "bracket" portion) on which the battery holder 32 and battery 33 are mounted is inserted into the hole 7 from the outer (outer) surface 10b of the door 10, such that the elongated portion 26a accommodating the motor 30, together with the battery holder 32 and battery 33, is inside the door 10, thereby effectively utilizing the available space within the hole 7. When assembled, the annular collar portion 26b abuts against the outer surface 10b of the door 10. As a result, the motor 30, PCBs 31a, 31b, and battery 33 are all located inside the door 10. The connector rod 40 links the motor 30 through a rectangular slot in the rotating member 29 of the "first actuator mechanism," which is operably connected to the latch 25 and housed in the body 22.

[0047] A USB-C cable port 36 for external power is located at the lower part of the collar portion 26b and can be accessed from the outside of the door 10. This allows external power to be supplied to the components of the electronic lock device 50.

[0048] In order to fit the elongated portion 26a and the battery holder 32 / battery 33 within the 40mm thickness of the door 10, the length of the elongated portion 26a must be less than 40mm, and the individual battery 33 and motor 30 must be compact enough to fit within the space.

[0049] With the cover of body 22 removed, the electronic lock device 50 is secured to door 10 using fasteners (not shown) from the inside of door 10. For clarity, Figure 9 These fasteners are omitted from the text.

[0050] The electronic lock device 50 is preferably actuated by NFC functionality or Bluetooth wireless connectivity. Preferably, this is achieved via an RFID card swipe (not shown) and / or a smartphone (not shown) paired with and used with the electronic lock device 50. In the case of an RFID card swipe, it is brought close to the sensor surface 35 of the NFC reader 34 to actuate the electronic lock device 50. In the case of a smartphone paired with the electronic lock device 50, Bluetooth wireless connectivity allows the smartphone user to actuate the electronic lock device 50.

[0051] While the wheel lock assembly 20 enables entry in its simplest form via RFID card swiping and / or Bluetooth-connected smartphone, it can also be optionally connected to a home / local IT network using the Thread and Matter smart home standard. Because the wheel lock assembly 20 has Bluetooth connectivity, other accessory connections are also possible, such as a wireless keypad for access codes.

[0052] In this embodiment, the preferred motor 30 capable of actuating the latch 25 is an N20 micro gear motor (6V 1000:1 gear ratio), and the preferred battery 33 is a 3V CR2 lithium battery with a height of 27mm and a diameter of 15.6mm, typically used in camera applications. Both of these preferred embodiments of the battery 33 and the motor 30 can meet the dimensional requirements for inclusion within the thickness of the door 10 and can be readily obtained as off-the-shelf components from various suppliers.

[0053] In tests using this lithium CR2 battery as a power source, the latch 25 of the prototype wheel lock assembly 20 was electrically retracted 3,650 times. This means that the wheel lock assembly 20 was unlocked ten times a day for a year without the lithium CR2 battery being fully discharged. This indicates that the lithium CR2 battery can be used normally for at least 12 months in this application. Therefore, when used in the wheel lock assembly 20, the lithium CR2 battery typically only needs to be replaced once a year.

[0054] If battery 33 fails, the hub lock assembly lock 20 and thus door 10 can always be opened from the inside. If the user is on the outside of door 10, emergency power can be provided from a power bank, laptop, or smartphone via USB-C cable port 36.

[0055] Compared to the prior art lock assembly with an electronically controlled actuator disclosed in AU2011224106A, the hub lock assembly 20 has several advantages. First, unlike this prior art, the hub lock assembly 20 does not require a separate hole for the wiring harness to pass from the outer side of the door to the inner side, eliminating the need for additional holes and thus eliminating the need for manufacturing tools. Furthermore, it does not require additional screws to be screwed into the door to install the battery housing, as is the case with prior art. Therefore, the hub lock assembly 20 can be easily retrofitted to doors that already have a rear 60mm hole without further modifications to the door. This makes it ideal for the DIY and rental / lease markets, with lower labor intensity for professional locksmiths. Second, due to the compactness of the electronic lock device 50, the motor 30 and battery 33 can be housed within the thickness of the door 10. Therefore, the materials required to manufacture the electronic lock device 50 are significantly less than those required by the aforementioned prior art, making it more cost-effective and thus more attractive and accessible to the DIY market. Third, since the battery 33 is housed within the door 10, it is not easily removed by a third party. Furthermore, compared to the previously mentioned lock AU2011224106A, the above embodiment is easier to match with existing decor because, from the outside of the door 10, you only need to replace the circular outer lock cylinder of a traditional "001 lock" with the collar portion 26b and circular surface 35 of the NFC reader 34, as... Figure 10 As shown. Importantly, in the prototype of this embodiment, the collar portion 26b and the circular surface 35 of the NFC reader 34 extend only about 8 mm from the outer surface 10b of the door 10, which is only slightly less than... Figure 3 The prior art mechanical lock shown has a lock cylinder 6 and its surrounding lock cylinder ring that are a few millimeters longer. It is conceivable that when this invention is commercialized, the collar portion 26b and circular surface 35 of the NFC reader 34 will extend approximately 6 millimeters from the outer surface 10b of the door 10. This means that when the collar portion 26b is adapted to the door 10, the amount of protrusion of the circular surface 35 and collar portion 26b of the NFC reader 34 will be the same as or only slightly more than that of the keyed lock cylinder and lock cylinder ring they replace.

[0056] It should be understood that, compared to existing technologies, these advantages of the above embodiments allow for flexibility in older rental apartments or homes currently equipped with mechanical "60mm rear hub locks," such as Lockwood. TM 001 and other similar locks. This is particularly important because this embodiment can be retrofitted relatively easily and has minimal impact on the aesthetics of "vintage" decor, since the collar portion 26b of the housing 26 is the same as or only slightly larger than the cylinder ring of a conventional 001 lock.

[0057] The aforementioned hub lock assembly 20 can be provided as a kit, in which both the internal main body (first housing) 22 and the electronic lock device 50 are included. However, it is also possible to provide only the electronic lock device 50, i.e., the electronic lock device mounted from the front of the door 10 and the connecting rod 40, and use... Figure 4 The existing mechanical lock body 2 shown is used to retrofit an electronic lock device to a door 10 with a conventional 60mm rear-mounted hub lock assembly 1, with its knob 4 and latch 5 fitted to the inner surface of the door 1. In this retrofit, you would remove the existing key lock cylinder (and lock cylinder ring) and its associated connecting rod of the conventional 60mm rear-mounted hub lock assembly 1 and replace them with the previously described electronic lock device 50 and its associated connecting rod 40. This makes this embodiment of the invention a more cost-effective alternative to the prior art.

[0058] In another embodiment (not shown), the USB-C cable port 36 of the above embodiment is located at the lower part of the collar portion 26b. However, in another embodiment (not shown), the USB-C cable port can instead be located on a portion of the sensor surface 35 on the reader 34 shown in the above embodiment.

[0059] In this specification and the accompanying claims, unless the context otherwise requires, the word “comprising” and variations such as “including” and “containing” shall be understood to imply coverage of the said integer or step or group of integers or steps, but not to exclude any other integer or step or group of integers or steps.

Claims

1. A hub lock assembly for use on a door, the hub lock assembly comprising: A first housing for attachment to the inner surface of the door; a latch movable relative to the side of the first housing between an extended locked position and a retracted released position; a first actuator mechanism including a first manually engageable member operable from the inside of the door to move the latch from the extended position; and an electronic lock device including a second housing for attachment to the outer surface of the door, at least one elongated portion of the second housing extending through a hole in the door toward the first housing, the electronic lock device having a second actuator mechanism operably connected to the latch, and the electronic lock device operable from the outside of the door such that when activated, the second actuator mechanism retracts the latch, thereby enabling the door to be opened; and a power supply device including at least one battery for powering the electronic lock device, together with the second actuator mechanism, disposed within or on the elongated portion of the second housing, wherein the second actuator mechanism includes a geared motor operably connected to the latch via a connector rod, and wherein both the geared motor and the at least one battery within the elongated portion of the second housing are entirely disposed within the door.

2. The hub lock assembly for use on a door according to claim 1, wherein the at least one battery of the power supply device has an associated battery holder, and both the battery and its associated battery holder are fully disposed in the door.

3. The hub lock assembly for use on a door according to claim 1, wherein the at least one battery and the gear motor are arranged vertically.

4. The hub lock assembly of claim 1, wherein the electronic lock device includes an NFC reader having a sensor surface configured to be adjacent to the outer surface of the door, and the NFC reader is operatively connected to the gear motor via at least one control PCB.

5. The hub lock assembly of claim 4, wherein the second housing of the electronic lock device includes a collar portion disposed at one end of the elongated portion, and when the electronic lock device is assembled to the door, the collar portion abuts against the outer surface of the door, the collar portion surrounding the sensor surface of the NFC reader.

6. The hub lock assembly of claim 5, wherein the second actuator mechanism of the electronic lock device can be actuated to retract the latch by means of an RFID card swipe operably interacting with the second actuator mechanism via the sensor surface of the NFC reader or by a smartphone wirelessly paired with the electronic lock device.

7. The hub lock assembly according to claim 2, wherein the gear motor is an N20 micro gear motor.

8. The hub lock assembly according to claim 1, wherein the battery is a CR2 battery.

9. The hub lock assembly of claim 5, wherein an external power source can be connected to the electronic lock device via a port located at or near the collar portion of the second housing.

10. An electronic lock device for retrofitting a 60mm rear-mounted hub lock assembly to a door, the door having holes through which the hub lock assembly is mounted on both sides of the door, the hub lock assembly comprising: A first housing for attachment to the inner surface of the door; a latch movable relative to the side of the first housing between an extended locked position and a retracted released position; The first actuator mechanism includes a first manually engaged member operable from the inside of the door to move the latch from an extended position; The modification includes replacing the key lock cylinder and associated lock ring and first connector rod with the electronic lock device and the associated second connector rod. The electronic lock device includes a second housing for attachment to the outer surface of the door, wherein at least one elongated portion of the second housing extends through the hole in the door toward the first housing. The electronic lock device is operable via the associated second connector rod. An electrically operated second actuator mechanism connected to the latch, and the electronic lock device being operable from the outside of the door such that when the electronic lock device is activated, the second actuator mechanism retracts the latch, thereby allowing the door to be opened; and a power supply device including at least one internal battery for powering the electronic lock device, the power supply device being disposed together with the second actuator mechanism within or on the elongated portion of the second housing, wherein the second actuator mechanism includes a geared motor operably connected to the latch via a connector rod, and wherein both the geared motor and the power supply device within the elongated portion of the second housing are entirely disposed within the door.

11. The electronic lock device of claim 10, wherein the at least one battery of the power supply device has an associated battery holder, and both the at least one battery and its associated battery holder are completely disposed within the door.

12. The electronic lock device according to claim 10, wherein the at least one battery and the gear motor are arranged vertically.

13. The electronic lock device of claim 10, wherein the electronic lock device includes an NFC reader having a sensor surface configured to be adjacent to the outer surface of the door, and the NFC reader is operatively connected to the gear motor via at least one control PCB.

14. The electronic lock device of claim 13, wherein the second housing includes a collar portion disposed at one end of the elongated portion, and when the electronic lock device is assembled to the door, the collar portion abuts against the outer surface of the door, the collar portion surrounding the sensor surface of the NFC reader.

15. The electronic lock device of claim 14, wherein when the NFC reader and collar portion are retrofitted to the door, the amount of protrusion of the NFC reader and collar portion is the same as or only slightly more than that of the keyed lock cylinder and lock cylinder ring they replace.

16. The electronic lock device of claim 14, wherein the second actuator mechanism of the electronic lock device can be actuated to retract the latch by means of an RFID card swipe operably interacting with the second actuator mechanism via the sensor surface of the NFC reader or by a smartphone wirelessly paired with the electronic lock device.

17. The electronic lock device according to claim 10, wherein the gear motor is an N20 micro gear motor.

18. The electronic lock device according to claim 10, wherein the battery is a CR2 battery.

19. The electronic lock device of claim 14, wherein an external power source can be connected to the electronic lock device via a port located at or near the collar portion of the second housing.

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