Door lock assembly

Abstract

 A door lock assembly (1) for being arranged at a door (2) is disclosed. The assembly (1) includes a cylinder housing (31), a cylinder body (32), a rotating member (33), a driving pin (37) coupled to the rotating member (33) and configured to rotate with rotation of the rotating member (33) and operable to rotate and move a latch (14) between two positions including a door locked position and an door unlocked position, and a first locking device (32, 33) preventing rotation of the rotating member (33) in the absence of an appropriate key. Especially the cylinder body (31) is adapted for axial movement (A) in respect to the cylinder housing (31). The assembly (1) further includes a second locking device (40, 41) preventing axial movement (A) of the cylinder body (32) within the cylinder housing (31) in a first blocking state, and in a second released state allowing axial movement (A) of the cylinder body (32) such that it is axially movable from the interior of the cylinder housing (31) to enable rotation of the cylinder body (32) in relation to the cylinder housing (31) together with the rotating member (33) to cause the driving pin (37) to rotate between the door locked position and the door unlocked position. A method for locking or unlocking a door (2) is also disclosed.

Description

Technical Field

[0001] The present invention relates to a door lock assembly for being arranged at a door. The door lock assembly includes an cylinder housing, a cylinder body, a rotating member, a driving pin coupled to the rotating member and configured to rotate with rotation of the rotating member and operable to rotate and move a latch between two positions including a door locked position and a door unlocked position, and a first locking device preventing rotation of the rotating member in the absence of an appropriate key. The present invention also relates to a method for locking or unlocking a door.

Background

[0002] Door locks may permit using a master key. A master key operates a set of several locks. Usually, there is nothing special about the key itself, but rather the lock into which it will fit. These master-keyed locks are designed to open with two different keys; one which is specific to each lock, the so called specific key which cannot operate any of the other locks in the set, and the master key which opens all locks in the set. Locks that have master keys have a second set of the mechanism used to operate them that is identical to all of the locks in the set of locks. One problem with master-keyed locks is that it is not possible to add a new lock to the set of locks without having to exchange the lock, which necessitates a change of specific key.

[0003] Key keeping systems may be used instead of master keys. Such a system is disclosed in SE 523 057. SE 523 057 discloses a lockable metal container which may be provided in a bore of a door leaf. A spare key to the door lock may then be placed in the metal container. Anyone who has access to the lockable metal container thereby gets access to the door. The system is for instance useful for home help service companies since it allows adding new clients without having to change the original door lock at the door of the client, but instead the door can be provided with the lockable metal container. Thereby the client may keep their original key.

[0004] One problem with systems using a metal container provided in the door is that a bore has to be made in the door to fit the metal container. Thus, if the system is not used anymore, for instance if home help service is no longer necessary, it is not possible to restore the door, but the bore have to be provided with a cover. Another problem with the key keeping system shown in SE 523 057 is that the container is visible from the exterior side of the door and thus notifies that the door accesses a home having home help service, which is not always desired. Yet another problem with the key keeping system shown in SE 523 057 is that opening the door is more complicated than if a master-key is used. A master key is used in the same manner as the original key, i.e. it opens the door lock directly, whereas a key keeping system requires opening the container first and then the door lock can be opened.

Summary of the invention

[0005] An object of the present invention is to at least partly overcome the above-mentioned drawbacks and to provide a door lock assembly which allow a door to be locked and unlocked using two different locking actuators, wherein one of the locking actuators is the key to the original door lock.

[0006] According to a first aspect of the invention, this and other objects are achieved, in full or at least partly, by a door lock assembly for being arranged at a door including an cylinder housing, a cylinder body, a rotating member, a driving pin coupled to the rotating member and configured to rotate with rotation of the rotating member and operable to rotate and move a latch between two positions including a door locked position and an door unlocked position, and a first locking device preventing rotation of the rotating member in the absence of an appropriate key. According to the invention, the cylinder body is adapted for axial movement in respect to the cylinder housing. The assembly further includes a second locking device preventing axial movement of the cylinder body within the cylinder housing in a first blocking state, and in a second released state allowing axial movement of the cylinder body such that it is axially movable from the interior of the cylinder housing to enable rotation of the cylinder body in relation to the cylinder housing together with the rotating member to cause the driving pin to rotate between the door locked position and the door unlocked position.

[0007] According to one embodiment of the invention, the door lock assembly comprises an cylinder housing adapted for secure attachment to a door; a first cylinder body located at least partially within said cylinder housing; a first rotating member located at least partially within the first cylinder body and selectively rotatable with respect to the first cylinder body, the first rotating member including a first key receptacle; a driving pin coupled to the first rotating member and configured to rotate with rotation of the first rotating member and operable to rotate and move a latch between two positions including a door locked position and an door unlocked position; and a first locking device preventing rotation of the first rotating member with respect of the first cylinder body in the absence of an appropriate key and allowing rotation of the first rotating member with respect to the first cylinder body upon the insertion of an appropriate key in the first key receptacle. According to the invention at least one of said cylinder housing and said first cylinder body is configured to prevent rotation of said first cylinder body within said cylinder housing; the first cylinder body is adapted for axial movement in respect to said cylinder housing; the door lock assembly further comprises a second locking device having a first blocking state in which the second locking device prevents axial movement of said first cylinder body, and a second released state in which said second locking device allows axial movement of said first cylinder body such that said first cylinder body is axially movable from the interior of said housing to enable rotation of said first cylinder body in relation to said cylinder housing together with the first rotating member to cause the driving pin to rotate between said door locked position and said door unlocked position.

[0008] The door lock assembly according to the invention allows, when arranged at a door, two different exterior locking devices to be used to operate the latch, e.g. to lock and unlock the door. In other words, two different opening devices may be used to control the latch. A first opening device, such as a key, may operate the first locking device and a second opening device may operate the second locking device. The door lock assembly is possible to arrange at a door having an existing locking mechanism which is operable with an existing exterior locking device, such as a locking cylinder, using an existing key. The door lock assembly is useful to arrange at any door to which more than one person should have access, without having to exchange the existing key. For instance, the door lock assembly may be installed at a front door at households needing home help service. Thereby, the door lock assembly allows residents, utilizing home help service, to keep their original door keys and to continue locking and unlocking their doors using their original keys. The door lock assembly also permit access for the home help service firm, but instead of changing the original door lock, the door lock assembly is arranged to cooperate with the existing door lock mechanism. The cylinder housing is exchanged to the door lock assembly according to the invention, and the original lock cylinder is reused as a first cylinder body with first rotating member. The home help service firm may thereby use one opening mechanism to all households which are provided with the door locking assembly, without having to use a master key system.

[0009] Yet another advantage with the door lock assembly according to the present invention is that it is possible to lock or unlock the door using only one action. A key keeping system having a container in which a spare key is kept may be difficult to handle with one hand. Further, with key keeping system it is always necessary to open two locks, first the lock to the container and then the door lock, which is more complicated and time consuming than using the door lock assembly.

[0010] The locking mechanism may be of a kind known in the art which is arranged in a lock housing in a cavity of the door. As is also well known in the art, the locking mechanism cooperates, via the latch, with a striking plate arranged in the door frame to lock the door.

[0011] In one embodiment of the invention, said second locking device comprises a blocking member, which in said first blocking state is arranged to interact with a axial movement limiting device connected to said first cylinder body.

[0012] In another embodiment of the invention, said first cylinder body in said second released state is arranged to interact, directly or indirectly, with an end position limiting device arranged with said cylinder housing.

[0013] In a further embodiment of the invention, said first cylinder body has an outer end and an inner end, and said axial movement limiting device comprises a stop washer mounted and coupled to the inner end of the first cylinder body, which stop washer, in said first blocking state, is arranged to interact with said second locking device.

[0014] In one embodiment of the invention, said axial movement limiting device is arranged to interact with said end position limiting device in said second released state.

[0015] In one embodiment of the invention, said axial movement limiting device has dimensions to provide a flange extending outside at least a part of a periphery of said first cylinder body; and wherein said cylinder housing has an opening in an outer surface thereof, said opening corresponding to a shape and size of said first cylinder body, and said cylinder housing further has an inner recess corresponding to an aggregated shape and size of the first cylinder body mounted and coupled to said axial movement limiting device, wherein a stop seat is provided in the recess at the opening in the outer surface of said cylinder housing providing said end position limiting device.

[0016] In a further embodiment of the invention the first cylinder body is bearing mounted to said axial movement limiting device, and preferably the first cylinder body is coupled to said axial movement limiting device via a bearing mounting.

[0017] In even a further embodiment of the invention the second locking device comprises a mechanical locking device, which may comprise a second cylinder body; a second rotating member located at least partially within said second cylinder body and selectively rotatable with respect to the second cylinder body, the second rotating member including a second key receptacle; a blocking member coupled to said second rotating member and configured to move with rotation of the second rotating member and operable to move between said first blocking state and said second released state. The mechanical locking device prevents rotation of the second rotating member with respect of the second cylinder body in the absence of an appropriate second key, and allows rotation of the second rotating member with respect to the second cylinder body upon the insertion of an appropriate second key in the second key receptacle.

[0018] In one embodiment the blocking member comprises a block shoulder which, in said first blocking state, interacts with said axial movement limiting device, which in one embodiment comprises a stop washer.

[0019] In one embodiment said first locking device may comprise a digital key locking device, and in a further embodiment said second locking device may comprise a digital key locking device.

[0020] In another embodiment of the invention the second locking device comprises an electronic locking device, which may comprise an electronic actuator arranged to actuate a blocking member, which blocking member is configured to move between said first blocking state and said second released state.

[0021] In one embodiment the electronic actuator is a solenoid.

[0022] In another embodiment the electronic actuator is a motor.

[0023] In a further embodiment said blocking member is arranged and configured to interact or not interact with the axial movement limiting device by inactivating or activating the solenoid or the motor.

[0024] According to a second aspect of the invention, the above disclosed objects and other objects are also achieved, in full or at least partly, by a method for locking or unlocking a door, which method comprises; arranging, on a door, a door lock assembly comprising a cylinder housing; a first locking device comprising a first cylinder body and a first rotating member; the door lock assembly further comprising a driving pin connected to the first rotating member and cooperating with a latch mechanism of the door, and a second locking device controlling axial movement of the first cylinder body; activating a released state of said second locking device to enable axial movement of the first cylinder body; pulling said first cylinder body out of said cylinder housing; rotating said first cylinder body together with said first rotating member, and said driving pin, wherein said driving pin operable interacts with said latch mechanism to rotate between a door locked position and an door unlocked position; pushing said first cylinder body back into said cylinder housing; and activating a blocking state of said second locking device to prevent axial movement of the first cylinder body.

[0025] Other objectives, features and advantages of the present invention will appear from the following detailed disclosure, from the attached claims, as well as from the drawings. It is noted that the invention relates to all possible combination of features.

[0026] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [element, device, component, means, step, etc.]" are to be interpreted openly as referring to at least one instance of said element, device, component, means, step, etc., unless explicitly stated otherwise.

[0027] As used herein, the term "comprising" and variations of that term are not intended to exclude other additives, components, integers or steps.

Brief description of the drawings

[0028] The invention will be described in more detail with reference to the appended schematic drawings, which show examples of presently preferred embodiments of the invention.

Fig. 1a is a perspective view and shows a portion of a door provided with a door lock assembly according a first embodiment of the invention.

Fig. 1b is a perspective view and shows a portion of a door provided with a door lock assembly according to a second embodiment of the invention.

Fig. 2 is an exploded view showing the door lock assembly according to the first embodiment of the invention.

Fig. 3a is a partly cross-sectional perspective view of a lock assembly with the first cylinder body in a first blocking state.

Fig. 3b is a partly cross-sectional perspective view of a door lock assembly with the first cylinder released and in a position expelled from the interior of the cylinder housing.

Fig. 3c is a partly cross-sectional perspective view of a door lock assembly with the first cylinder released and expelled from the interior of the cylinder housing and being partly rotated together with the first rotating member, and the driving pin.

Fig. 4a is a partly cross-sectional view of the door lock assembly according to the first embodiment and the interaction of the second locking device and the axial movement limiting device in a first blocking state.

Fig. 4b is a partly cross-sectional view of the door lock assembly according to the first embodiment and the non-interaction of the second locking device and the axial movement limiting device in a second released state.

Fig. 5a is a partly cross-sectional view of a door lock assembly according to a second embodiment of the invention.

Figs. 5b to 5e are schematic partly cross sectional views of the interaction of the second locking device and the axial movement limiting device in the door lock assembly according to a second embodiment of the invention, to release the first cylinder body for axial movement (Fig. 5b), to pull out the first cylinder body out of the cylinder housing (Fig. 5c), to rotate the first cylinder body together with the rotating member and driving pin to unlock or lock the door (Fig. 5d), and to push in the first cylinder body into the cylinder housing to again block the first cylinder body for axial movement (Fig. 5e).

Detailed Description of the Preferred Embodiments

[0029] The invention will now for the purpose of exemplification be described in more detailed by means of examples and with reference of the accompanying drawings, in which currently preferred embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and to fully convey the scope of the invention to the skilled addressee. Like reference characters refer to like elements throughout.

[0030] Fig. 1 a shows a door lock assembly 1 according to a first embodiment of the invention arranged at a door 2. The door lock assembly 1 may be installed at a door 2 and be connected to an existing locking mechanism 3 arranged at a door 2. The door 2 may be a front door to a building such as a house or to an apartment. The door has an interior door surface 4 and an exterior door surface 5. As most common front doors, the door 2 is provided with two through openings 6 and 7, also referred to as first bore 6 and second bore 7. A door lock assembly 1 is arranged in connection with the first bore 6 on the exterior side of the door and a interior locking device (not shown), like a knob, on the interior side of the door 2. The second bore 7 of the door 2 holds a door handle 9. The door handle 9 comprises a lever 10 and a rotatable portion (not shown) arranged through the second bore 7. The lever 10 is in parallel with the door leaf, and the rotatable portion is perpendicular to the door leaf. The rotatable portion is coupled to a first latch 12.

[0031] As in a common door, having door locks, a lock housing 13 holding a locking mechanism 3 is arranged in a cavity of the door 2. The locking mechanism 3 and the lock housing 13 are of common sort, which are well known in the art, and not described in detail here. The locking mechanism 3 may be of any kind known in the art which is arranged in a lock housing in a cavity of a door 2. As is also well known in the art, the locking mechanism 3 cooperates, via latches 12, 14, with a striking plate (not shown) arranged in a door frame (not shown) to lock the door 2. The locking mechanism 3 controls a second latch 14 via the door lock assembly 1 from the exterior side of the door 2 and via the interior locking device from the interior side of the door 2 in a well known manner. The locking mechanism 3 is coupled to the second latch 14 by a conventional coupling means (not shown) so as to actuate the second latch 14.

[0032] The first latch 12 is a non-lockable latch, and is controlled by the door handle 9. The door handle 9 is coupled to the first latch 12 via the lock housing 13 by conventional coupling means (not shown here) so as to actuate the first latch 12 by means of the rotatable portion and a shaft (not shown here). Thus, the first latch 12 is opened by pushing down the lever 10 in a convention manner.

[0033] Fig. 1b shows a door lock assembly 1 according to a second embodiment of the invention arranged at a door 2. As disclosed earlier the door lock assembly 1 may be installed at a door 2 and be connected to an existing locking mechanism 3 arranged at a door.

[0034] Fig. 2 shows a door lock assembly 1 according to the first embodiment in an exploded view to disclose the different part thereof in more detail. The door lock assembly 1 has a first cylinder housing 31, which is adapted for secure attachment to a door 2 at the first bore 6. At least partially within said first cylinder housing 31 a first cylinder body 32 is arranged, and at least partially within said first cylinder body 32 a first rotating member 33 is arranged. The first rotating member 33 has a first key receptacle 34 and is selectively rotatable within respect to the first cylinder body 32 upon insertion of an appropriate key in the first key receptacle 34. In absence of an appropriate key, a first locking device 32, 33 prevents rotation of the first rotating member 33 with respect to the first cylinder body 32. A driving plate 36 and a driving pin 37 is coupled to the first rotating member 33 and configured to rotate with rotation of the first rotating member 33. The driving pin 37 is then coupled to the locking mechanism 3 and by rotating between two positions, the driving pin 37 urges the second latch 14 to expel from the lock housing 13 to engage the striking plate arranged in the door frame to lock the door, or urges the second latch 14 to withdraw into the lock housing 13 to unlock the door 2.

[0035] A stop washer 38 is mounted and coupled to the cylinder body 32 in an inner end 32b thereof arranged within the cylinder housing 31. Preferably, the cylinder body 32 is mounted and coupled to the stop washer 38 by a bearing mounting 39. The stop washer 38 has at least partly a radial extension which is larger than the radial extension of the cylinder body 32. Thus when the stop washer 38 is mounted and coupled to the cylinder body 32 it has dimensions which provides a flange 49 extending radially outside at least a part of a periphery of the first cylinder body 32.

[0036] The lock assembly 1 further comprises a second cylinder body 40 which may be arranged at least partly in the first cylinder housing 31. A second rotating member 41 is arranged at least partly within the second cylinder body 40. The second rotating member 41 has a second key receptacle 42 and is selectively rotatable within respect to the second cylinder body 40 upon insertion of an appropriate key in the second key receptacle 42. In absence of an appropriate key, a second locking device 40, 41 prevents rotation of the second rotating member 41 with respect to the second cylinder body 40 and allows rotation of the second rotating member 41 with respect to the second cylinder body 40 between a first blocking state and a second released state upon insertion of an appropriate key in the key receptacle 42.

[0037] A blocking member 44 is coupled to the second rotating member 41 in such a way that it rotates with rotation of the second rotating member 41. The blocking member 44 has a block shoulder 45 which is arranged to interact with the stop washer 38 when the second rotating member 41 is rotated to said first blocking state, and to not interact with the stop washer 38 in said second released state. Thus, when the blocking member 44 interact with the stop washer 38 and the flange 49 thereof, the first cylinder body 32 is prevented for axial movement, i.e. in a first blocking state, and when the blocking member 44 is rotated out from interaction with the flange 49 of the stop washer 38, the first cylinder body 32 is released for axial movement, i.e. in a second released state.

[0038] The cylinder housing 31 has an opening 46 in an outer surface thereof corresponding to a shape and size of the first cylinder body 32 and has an inner recess 47 in communication with said opening 46 and corresponding a to an aggregated shape and size of the first cylinder body 32 mounted and coupled to said stop washer 38. Thus, at the interface of the recess 47 and the opening 46, a stop seat 48 is provided. With the recess 47 and the opening 46, the cylinder housing 31 prevents any rotation of the first cylinder body 32 as long as the first cylinder body 32 is kept at least partly within the cylinder housing 31.

[0039] As shown in Fig. 3a and 3b, the first cylinder body 32 is adapted for axial movement A in respect to the cylinder housing 31. Thus, inserting an appropriate second key in the second key receptacle 42, the second rotating member 41 may be rotated from a first blocking state, as shown in Fig. 4a, to a second released state, as shown in Fig. 4b, together with the blocking member 44 and thereby bringing the locking shoulder 45 out of engagement with the flange 49 of the stop washer 38. Thereafter, the first cylinder body 32 may be engaged by hand to be pulled out of the cylinder housing 31 in an axial movement from the position as shown in Fig. 3a to the position shown in Fig. 3b, in which position the stop washer 38 has abutted the stop seat 48, an end position limiting device, and thereby limited the axial movement of the first cylinder body 32. After having pulled the first cylinder body 32 out of the cylinder housing 31, the first cylinder body 32 is free to be rotate as shown in Fig. 3c. As no appropriate first key has been inserted in the first key receptacle 34, the first rotating member 33 is locked for rotation within the first cylinder body 32 and will rotate together with the rotation of the first cylinder body 32 and also cause rotation of the driving plate 36 together with the driving pin 37, and thereby cause the ordinary locking mechanism 3 within the lock housing 13 to expel or withdraw the second latch 14 for engagement or disengagement with the striking plate arranged in the doorframe to lock or unlock the door 2.

[0040] The second cylinder body 40, second rotating member 41, second key receptacle 42 and the appropriate key thereto may comprise a mechanical key system or a digital key system. Also the first cylinder body 32, first rotating member 33, first key receptacle 34 and the appropriate key thereto may comprise a mechanical key system or a digital key system.

[0041] The digital key system may be any digital key system known in the art, and may in one embodiment comprise a solenoid to activate or inactivate the possible rotation of the second rotating member 41. All other parts of the door lock assembly are the same as disclosed for the first embodiment disclosed above in relation to fig. 1a, 2, 3a-c and 4a-b.

[0042] In an alternative embodiment, the blocking member 44 and the blocking shoulder 45 may also be brought in and out of engagement with the flange 49 of the stop washer 38 with a reciprocal movement initiated by the rotating movement of the second rotating member 41 and a guiding cam coupled with or arranged in the blocking member 44.

[0043] In Fig. 5a-e an alternative second embodiment of the door lock assembly according to the invention is shown. The difference to the first disclosed embodiment is that instead of a second cylinder body 40 with a second rotating member 41 to block or release the first cylinder body 32 for axial movement, an electronic locking device, a solenoid 50, is arranged to block or release the first cylinder body 32 for axial movement. A blocking member 54 is arranged to move back and forth to engage or disengage with the stop washer 38. The solenoid 50 is arranged with a blue tooth module (not shown), cables (not shown) connecting the solenoid and the blue tooth module, and a cable (not shown) arranged through the door 2 and connecting the solenoid 50 at the exterior side of the door 2. The solenoid 50 may be activated by a tag, a card, or a mobile phone. The solenoid may also be arranged with a near field communication device (NFC).

[0044] As shown in Fig. 5a, the blocking member 54 is, in a first blocking state, arranged to engage the stop washer 38 with a block shoulder 55 by a spring load (not shown) in a recess 56 arranged in the bearing mounting 39. Upon releasing the first cylinder body 32 for axial movement A, the cylinder body 32 is pushed into the interior 47 of the cylinder housing 31 as is shown in Fig. 5b. The block shoulder 55 of the blocking member 54 is then urged out from the recess 56 and out from engagement with the stop washer 38, and the blocking member 54 will partly rotate around axis LM. A recess 52 is arranged in the blocking member 54, and when the solenoid 50 is activated (via tag, card of mobile phone), a solenoid lock pin 51 is activated to engage the recess 52 in the blocking member 54. Thereby, the first cylinder body is released for axial movement, and upon release of the pressure on the first cylinder body 32, the first cylinder body will expel from the interior 47 of the cylinder housing 31 by a spring 53 arranged between a seat (not shown) in the cylinder housing 31 and the stop washer 38, and the outer end 32a of the first cylinder body 32 may be engaged by hand to pull it out from the cylinder housing 31 in an axial movement A until the flange 49 of the stop washer 38 abuts the stop seat 48 as shown in Fig. 5c. The first cylinder body 32 may then be rotated together with the bearing mounting 39, driving plate 36 and driving pin 37 to lock or unlock the door 2 as shown in Fig. 5d.

[0045] After locking or unlocking the door 2, the first cylinder body 32 is pushed back into the cylinder housing 31. The solenoid is activated to disengage the solenoid lock pin 51 from the recess 52, whereby the spring load urges the blocking member 54 to rotate around the axis LM and the block shoulder 55 to engage the recess 56 and the stop washer 38 to again block the first cylinder body 32 for axial movement A.

[0046] Common for all the embodiments of the second locking device, is that it blocks or releases the axial movement of the first cylinder body 32 by engaging or disengaging a blocking member 44, 54 and an axial movement limiting device 38, which in the above embodiments comprises the stop washer 38.

[0047] The first cylinder body 32 may extend outside the outer surface of the cylinder housing 31 in its axially locked position, i.e. when being retracted in the cylinder housing 31 and the blocking member 44, 54 engaging the stop washer 38. When extending outside the outer surface of the cylinder housing 31, the cylinder body 32 may easily, after having released the first cylinder body 32 for axial movement A, be engaged by hand to pull out the cylinder body 32 from the cylinder housing 31, rotate it and push it back in again into the cylinder housing 31. On the other hand, the cylinder body 32 may also be resiliently mounted within the cylinder housing 31, e.g. spring-loaded, and as soon as the first cylinder body 32 is released for axial movement A, a spring force urges the cylinder body 32 to extend outside the outer surface of the cylinder housing 31 to enable engagement therewith by hand to pull out, rotate and push back in again.

[0048] In embodiments of the above disclosed door lock assemblies the cylinder housing 31 may be provided in two pieces, an outer cylinder housing part 31 a and inner cylinder housing part 31 b, wherein the inner cylinder housing part 31 b may at least partly be arranged embedded in the door leaf, while the outer cylinder housing may be arranged on the outside of the door leaf.

[0049] The cylinder bodies 32 shown in the enclosed drawings all have a non-circular outer end view, and together with the shape of the recess 47 in the cylinder housing 31, a rotation of the cylinder body 32 within the cylinder housing 31 is prevented. In these embodiments the cylinder housing and the cylinder body are configured to prevent rotation of the cylinder body within the cylinder housing.

[0050] However, in other, non-shown, embodiments of the invention the cylinder bodies may have a circular outer end view, and the recess within the cylinder housing may also be circular. Also in such embodiments rotation of the cylinder body within the cylinder housing may be prevented, for example by arranging the rotating member off center in the cylinder body. Thus, in such an embodiment it is the cylinder body which is configured to prevent rotation of the first cylinder body within the cylinder housing.

[0051] The skilled person realises that a number of modifications of the embodiments described herein are possible without departing from the scope of the invention, which is defined in the appended claims.

Claims

1. Door lock assembly (1) for being arranged at a door (2), comprising
a cylinder housing (31) adapted for secure attachment to a door (2),
a first cylinder body (32) located at least partially within said cylinder housing (31),
a first rotating member (33) located at least partially within the first cylinder body (32) and selectively rotatable with respect to the first cylinder body (32), the first rotating member (33) including a first key receptacle (34),
a driving pin (37) coupled to the first rotating member (33) and configured to rotate with rotation of the first rotating member (33) and operable to rotate and move a latch (14) between two positions including a door locked position and an door unlocked position, and
a first locking device (32, 33) preventing rotation of the first rotating member (33) with respect of the first cylinder body (32) in the absence of an appropriate key, and allowing rotation of the first rotating member (33) with respect to the first cylinder body (32) upon the insertion of an appropriate key in the first key receptacle (34),
characterized in that
at least one of said cylinder housing (31) and said cylinder body (32) is configured to prevent rotation of said first cylinder body (32) within said cylinder housing (31),
said first cylinder body (32) is adapted for axial movement (A) in respect to said cylinder housing (31),
said door lock assembly (1) further comprising a second locking device (40, 41; 50, 51) having a first blocking state in which the second locking device prevents axial movement (A) of said first cylinder body (32), and a second released state in which said second locking device (40, 41; 50, 51), allows axial movement (A) of said first cylinder body (32) such that said first cylinder body (32) is axially movable from the interior (47) of said cylinder housing (31) to enable rotation of said first cylinder body (32) in relation to said cylinder housing (31) together with the first rotating member (33) to cause the driving pin (37) to rotate between said door locked position and said door unlocked position.

2. Door lock assembly (1) according to claim 1, wherein said second locking device (40, 41; 50, 51) comprises a blocking member (44; 54), which in said first blocking state is arranged to interact with a axial movement limiting device (38) connected to said first cylinder body (32).

3. Door lock assembly (1) according to claim 1 or claim 2, wherein said first cylinder body (32) in said second released state is arranged to interact, directly or indirectly, with an end position limiting device (48) arranged with said cylinder housing (31).

4. Door lock assembly (1) according to claim 2 or claim 3, wherein said first cylinder body (32) has an outer end (32a) and an inner end (32b), and said axial movement limiting device (38) comprises a stop washer (38) mounted and coupled to the inner end (32b) of the first cylinder body (32), which stop washer (38), in said first blocking state, is arranged to interact with said second locking device (40, 41; 50, 51).

5. Door lock assembly (1) according to anyone of claims 3-4, wherein said axial movement limiting device (38) is arranged to interact with said end position limiting device (48) in said second released state.

6. Door lock assembly (1) according to anyone of claims 2-5, wherein said axial movement limiting device (38) has dimensions to provide a flange (49) extending outside at least a part of a periphery of said first cylinder body (32); and wherein said cylinder housing (31) has an opening (46) in an outer surface thereof, said opening (46) corresponding to a shape and size of said first cylinder body (32), and said cylinder housing (31) further has an inner recess (47) corresponding to an aggregated shape and size of the first cylinder body (32) mounted and coupled to said axial movement limiting device (38), wherein a stop seat (48) is provided in the recess (47) at the opening (46) in the outer surface of said cylinder housing (31) providing said end position limiting device (48).

7. Door lock assembly (1) according anyone of the preceding claims, wherein said second locking device (40, 41) comprises a mechanical locking device.

8. Door lock assembly (1) according to claim 7, wherein said mechanical locking device (40, 41) comprises
a second cylinder body (40),
a second rotating member (41) located at least partially within said second cylinder body (40) and selectively rotatable with respect to the second cylinder body (41), the second rotating member (41) including a second key receptacle (42),
a blocking member (44) coupled to said second rotating member (41) and configured to move with rotation of the second rotating member (41) and operable to move between said first blocking state and said second released state,
and wherein said mechanical locking device (40, 41) prevents rotation of the second rotating member (41) with respect of the second cylinder body (40) in the absence of an appropriate key, and allowing rotation of the second rotating member (41) with respect to the second cylinder body (40) upon the insertion of an appropriate key in the second key receptacle (42).

9. Door lock assembly (1) according to claim 8, wherein said blocking member (44) comprises a block shoulder (45) which in said first blocking state interacts with said axial movement limiting device (38).

10. Door lock assembly (1) according to anyone of the preceding claims, wherein said first locking device (32, 33) comprises a digital key locking device.

11. Door lock assembly (1) according to anyone of the preceding claims, wherein said second locking device (40, 41) comprises a digital key locking device.

12. Door lock assembly (1) according to anyone of the preceding claims, wherein said second locking device (50, 51) comprises an electronic locking device.

13. Door lock assembly (1) according to claim 12, wherein said electronic locking device comprises an electronic actuator (50) arranged to actuate a blocking member (54), which blocking member (54) is configured to move between said first blocking state and said second released state.

14. Door lock assembly (1) according to claim 13, wherein said actuator is a solenoid (50).

15. Method for locking or unlocking a door, comprising
arranging, on a door (2), a door lock assembly (1) comprising a cylinder housing (31); a first locking device comprising a first cylinder body (32) and a first rotating member (33); the door lock assembly (1) further comprising a driving pin (37) connected to the first rotating member (33) and cooperating with a latch mechanism (3, 14) of the door (2), and a second locking device (40, 41; 50, 51) controlling axial movement of the first cylinder body (32),
activating a released state of said second locking device (40, 41; 50, 51) to enable axial movement of the first cylinder body (32),
pulling said first cylinder body (32) out of said cylinder housing (31), rotating said first cylinder body (32) together with said first rotating member (33), and said driving pin (37), wherein said driving pin (37) operable interacts with said latch mechanism (3, 14) to rotate between a door locked position and an door unlocked position,
pushing said first cylinder body (32) back into said cylinder housing (31), and
activating a blocking state of said second locking device (40, 41; 50, 51) to prevent axial movement of the first cylinder body (32).

Drawing