SE542953C2 - Door lock assembly comprising a rotatable cylinder housing - Google Patents

Abstract

A door lock assembly (1) for being arranged at a door (2), comprising a mounting body (3) adapted for secure attachment to a door (2), a cylinder housing (17) coupled to said mounting body (15), a first cylinder body (19) located at least partially within said cylinder housing (17), a first rotating member (23) located at least partially within the first cylinder body (19) and selectively rotatable with respect to the first cylinder body (19), the first rotating member (23) including a first key receptacle (25).The cylinder housing (17) is adapted for at least 360° rotation in both directions with respect to said mounting body (15) and said first cylinder body (9) is configured to rotate with said cylinder housing (17). The door lock assembly (1) further comprises a second locking device (31, 33, 37) that has a blocking state in which said second locking device (31, 33, 37) prevents rotational movement of said cylinder housing (17) and a released state in which said second locking device (31, 33, 37) allows rotational movement of said cylinder housing (17) together with the first cylinder body (19) and the first rotating member (23) to cause the driving pin (27) to rotate between a door locked position and a door unlocked position.

Description

DOOR LOCK ASSEMBLY COMPRISING A ROTATABLE CYLINDERHOUSING Technical Field The present invention relates to a door lock assembly for beingarranged at a door. The door lock assembly includes a cylinder housing, acylinder body, a rotating member, a driving pin coupled to the rotatingmember and configured to rotate with rotation of the rotating member andoperable to rotate and move a latch between two positions including a doorlocked position and a door unlocked position, and a first locking devicepreventing rotation of the rotating member in the absence of an appropriate key.

BackgroundEP 2 927 399 shows a door lock assembly in which a cylinder body is adapted for axial movement in respect to the cylinder housing and whichincludes a second locking device preventing axial movement of the cylinderbody within the cylinder housing in a first blocking state, and in a secondreleased state allowing axial movement of the cylinder body such that it isaxially movable from the interior of the cylinder housing to enable rotation ofthe cylinder body in relation to the cylinder housing together with the rotatingmember to cause the driving pin to rotate between the door locked positionand the door unlocked position.However, this door lock assembly is considered to be complex.

Furthermore, it may be limited to certain types of lock cylinder bodies.

Summary of the lnvention An object of the present invention is to at least partly overcome theabove-mentioned drawbacks and to provide a door lock assembly whichallows 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. 2 According to a first aspect of the invention, this and other objects areachieved, in full or at least partly, by a door lock assembly for being arrangedat a door, comprising a mounting body adapted for secure attachment to adoor, a cylinder housing coupled to said mounting body, a first cylinder bodylocated at least partially within said cylinder housing, a first rotating memberlocated at least partially within the first cylinder body and selectively rotatablewith respect to the first cylinder body, the first rotating member including afirst key receptacle, a driving pin coupled to the first rotating member andconfigured to rotate with rotation of the first rotating member and operable torotate and move a latch between two positions including a door lockedposition and a door unlocked position, and a first locking device preventingrotation of the first rotating member with respect to the first cylinder body inthe absence of an appropriate key, and allowing rotation of the first rotatingmember with respect to the first cylinder body upon the insertion of anappropriate key in the first key receptacle, wherein said cylinder housing isadapted for at least 360° rotation in both directions with respect to saidmounting body, said first cylinder body is configured to rotate with saidcylinder housing, and said door lock assembly further comprising a secondlocking device that has a blocking state in which said second locking deviceprevents rotational movement of said cylinder housing and a released state inwhich said second locking device allows rotational movement of said cylinderhousing together with the first cylinder body and the first rotating member tocause the driving pin to rotate between said door locked position and saiddoor unlocked position.

The door lock assembly according to the invention allows, whenarranged at a door, two different exterior locking devices to be used tooperate the latch, e.g. to lock and unlock the door. ln other words, twodifferent opening devices may be used to control the latch. A first openingdevice, such as a key, may operate the first locking device and a secondopening device may operate the second locking device. The door lockassembly is possible to arrange at a door having an existing lockingmechanism which is operable with an existing exterior locking device, such as 3 a locking cylinder, using an existing key. The door lock assembly is useful toarrange at any door to which more than one person should have access,without having to exchange the existing key. For instance, the door lockassembly may be installed at a front door at households needing home helpservice. Thereby, the door lock assembly allows residents, utilizing home helpservice, to keep their original door keys and to continue locking and unlockingtheir doors using their original keys. The door lock assembly also permitsaccess for the home help service firm, but instead of changing the originaldoor lock, the door lock assembly is arranged to cooperate with the existingdoor lock mechanism. The cylinder housing is exchanged to the door lockassembly according to the invention, and the original lock cylinder is reusedas a first cylinder body with first rotating member. The home help service firmmay thereby use one opening mechanism to all households which areprovided with the door locking assembly, without having to use a master keysystem.

Upon operation of the driving pin by rotating the cylinder housing, thesecond locking device, which is situated at least partly within the cylinderhousing, is rotated with the cylinder housing. The second locking device isthus mounted to the cylinder housing in such a manner that it followsrotational movement of the cylinder housing. This provides for a less complexand/or more compact solution than the one provided in EP 2 927 399, inwhich only the cylinder body itself is rotated upon operation of the latch usingthe second opening device. Yet another advantage is that a solution havingfewer parts, and especially fewer individually moving parts, may be achieved.Also, a door lock assembly that is easier to mount at a door may be provided.

Furthermore, a solution that is very easy to operate may be achieved,since not only the first cylinder body but also the cylinder housing itself isturned upon locking/unlocking using the second opening device.

Furthermore, a door lock assembly according to the present disclosuremay work for a variety of different lock cylinder shapes, including circular lockcylinders, and/or may offer several mounting alternatives, which provides fora very flexible solution. 4 According to one embodiment the second locking device comprises arotatable blocking member and preferably a semi-circular rotatable blockingmember.

According to one embodiment said rotatable blocking member in saidblocking state is arranged to interact with the wall of a recess formed in saidmounting body.

According to one embodiment said second Iocking device comprises asecond cylinder body, a second rotating member located at least partiallywithin said second cylinder body and selectively rotatable with respect to thesecond cylinder body, the second rotating member including a second keyreceptacle, a blocking member coupled to said second rotating member andconfigured to move with rotation of the second rotating member and operableto move between said first blocking state and said second released state, andwherein said second locking device prevents rotation of the second rotatingmember with respect to the second cylinder body in the absence of anappropriate key, and allows rotation of the second rotating member withrespect to the second cylinder body upon the insertion of an appropriate keyin the second key receptacle.

According to one embodiment the door lock assembly comprises anaxial movement limiting device arranged to prevent axial movement of thecylinder housing relative to the mounting body. The axial movement limitingdevice may comprise at least two balls received in a radial groove formed inthe mounting body.

According to one embodiment at least one member, preferably saidcylinder housing and/or said second cylinder body, is adapted for axialmovement in respect to said mounting body, and the second Iocking device insaid released state allows axial movement of said axially movable membersuch that said axially movable member is axially movable from the interior ofsaid mounting body to enable rotation of said cylinder housing in relation tosaid mounting body together with the cylinder body and the rotating memberto cause the driving pin to rotate between said door locked position and said door unlocked position.

According to one embodiment at least one of said mounting body andsaid cylinder housing is configured to prevent rotation of said cylinder housingwithin said mounting body. This embodiment enables a very robust solutionwith an outer surface of the cylinder housing surrounded by a portion of themounting body, even in cases where the rotating member of the first lockingdevice is located off center in the cylinder housing.

According to one embodiment said second locking device comprisesan axially movable locking member.

According to one embodiment the door lock assembly comprises anaxial movement limiting device arranged to limit axial movement of thecylinder housing relative to the mounting body. The axial movement limitingdevice allows a predetermined axial movement of at least one member of thedoor lock assembly.

According to one embodiment at least one of said first locking deviceand said second locking device comprises a digital key locking device.

Further advantages and characteristics of the invention emerge from the description below and from the following patent claims.

Brief description of the drawinqs The invention will be described in more detail with reference to theappended schematic drawings, which show examples of presently preferredembodiments of the invention.

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

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

Fig. 3A is a partly cross-sectional perspective view of parts of the doorlock assembly shown in Fig. 2.

Figs. 3B-G illustrate mounting of the door lock assembly shown in Fig.2 to a door.

Fig. 3H is a cross-sectional view of the door lock assembly shown inFig. 2 mounted to a door. 6 Fig. 4A is a perspective view and illustrates the door lock assemblyaccording to the first embodiment with the second locking device in a blockingstate.

Fig. 4B is a perspective view and illustrates the door lock assemblyaccording to the first embodiment with the second locking device in areleased state.

Fig. 4C is a perspective view and illustrates the door lock assemblyaccording to the first embodiment with the second locking device in areleased state and the cylinder housing partly rotated together with the firstrotating member and the driving pin.

Fig. 4D is a perspective view and illustrates the door lock assemblyaccording to the first embodiment with the second locking device in areleased state and the cylinder housing further rotated together with the firstrotating member and the driving pin.

Fig. 4E is a perspective view and illustrates the door lock assemblyaccording to the first embodiment with the second locking device in areleased state and the cylinder housing rotated a full turn with respect to themounting body.

Fig. 5 is an exploded view showing a door lock assembly according toa second embodiment of the invention.

Fig. 6A is a partly cross-sectional perspective view and illustrates thedoor lock assembly according to the second embodiment with the secondlocking device in a blocking state.

Fig. 6B is a partly cross-sectional perspective view and illustrates thedoor lock assembly according to the second embodiment with the secondlocking device in a released state.

Fig. 6C is a partly cross-sectional perspective view of a door lockassembly according to the second embodiment with the cylinder housingreleased and expelled from the interior of the mounting body.

Fig. 6D is a perspective view of a door lock assembly according to thesecond embodiment with the cylinder housing released and expelled from theinterior of the mounting body.

Description of preferred embodiments The invention will now for the purpose of exemplification be describedin more detailed by means of examples and with reference of theaccompanying drawings, in which currently preferred embodiments of theinvention are shown. The present invention may, however, be embodied inmany different forms and should not be construed as limited to theembodiments set forth herein; rather, these embodiments are provided forthoroughness and completeness, and to fully convey the scope of theinvention to the skilled addressee. Like reference characters refer to likeelements throughout.

Fig. 1 shows a door lock assembly 1 according to a first embodiment ofthe invention arranged at a door 2. The door lock assembly 1 may be installedat a door 2 and be connected to an existing locking mechanism 3 arranged ata door 2. The door 2 may be a front door to a building such as a house or toan apartment. The door has an interior door surface 4 and an exterior doorsurface 5. As most common front doors, the door 2 is provided with twothrough 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 theexterior side of the door and an interior locking device (not shown), like aknob, on the interior side of the door 2. The second bore 7 of the door 2 holdsa door handle 9. The door handle 9 comprises a lever 10 and a rotatableportion (not shown) arranged through the second bore 7. The lever 10 is inparallel with the door leaf, and the rotatable portion is perpendicular to thedoor leaf. The rotatable portion is coupled to a first latch 12.

As in a common door, having door locks, a lock housing 13 holding alocking mechanism 3 is arranged in a cavity of the door 2. The lockingmechanism 3 and the lock housing 13 are of common sort, which are wellknown in the art, and not described in detail here. The locking mechanism 3may be of any kind known in the art which is arranged in a lock housing in acavity of a door 2. As is also well known in the art, the locking mechanism 3cooperates, via latches 12, 14, with a striking plate (not shown) arranged in a 8 door frame (not shown) to lock the door 2. The locking mechanism 3 controlsa second latch 14 via the door lock assembly 1 from the exterior side 5 of thedoor 2 and via the interior locking device from the interior side 4 of the door 2in a well known manner. The locking mechanism 3 is coupled to the secondlatch 14 by a conventional coupling means (not shown) so as to actuate thesecond latch 14.

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

Fig. 2 shows a door lock assembly 1 according to the first embodimentin an exploded view to disclose the different part thereof in more detail. Thedoor lock assembly 1 has a mounting body 15, which is adapted for secureattachment to a door 2 at the first bore 6. ln this embodiment the mountingbody 15 is securely attached to the door 2 by means of four screws 16. Acylinder housing 17 is coupled to the mounting body 15. ln this embodimentthe cylinder housing 17 is coupled to the mounting body 15 by means of anaxial bearing device such that the cylinder housing 17 is adapted for at least360° rotation in both directions with respect to the mounting body 15. Theaxial bearing device, which will be described in more detail later withreference to Fig. 3H, comprises recesses (not shown here) formed in thecylinder housing 17, balls 20 and a radial groove 22 formed in the mountingbody 15. An end portion 17a of the cylinder housing 17 is thus received in themounting body 15. At least partially within said cylinder housing 17 a firstcylinder body 19 is arranged. ln this embodiment the first cylinder body 19 issecurely attached to said cylinder housing 17 by means of four screws 21. Atleast partially within said first cylinder body 19 a first rotating member 23 isarranged. The first rotating member 23 has a first key receptacle 25 and isselectively rotatable with respect to the first cylinder body 19 upon insertion ofan appropriate key in the first key receptacle 25. ln absence of an appropriate 9 key, a first locking device prevents rotation of the first rotating member 23with respect to the first cylinder body 19. A driving member 27 is coupled tothe first rotating member 23 and configured to rotate with rotation of the firstrotating member 23. The driving member 27 is then coupled to a recess 29 ofthe Iocking mechanism 3 and by rotating between two positions, the drivingmember 27 urges the second latch 14 to expei from the lock housing 13 toengage the striking plate arranged in the door frame to lock the door, or urgesthe second latch 14 to withdraw into the lock housing 13 to unlock the door 2.

The lock assembly 1 further comprises a second cylinder body 31which may be arranged at least partly in the cylinder housing 17. A secondrotating member 33 is arranged at least partly within the second cylinder body31. The second rotating member 33 has a second key receptacle 35 and isselectively rotatable within respect to the second cylinder body 31 uponinsertion of an appropriate key in the second key receptacle 35. ln absence ofan appropriate key, a second Iocking device 31, 33 prevents rotation of thesecond rotating member 33 with respect to the second cylinder body 31 andallows rotation of the second rotating member 33 with respect to the secondcylinder body 31 between a blocking state and a released state upon insertionof an appropriate key in the key receptacle 35.

A blocking member, in the form of semi-circular blocking disc 37, iscoupled to the second rotating member 33 in such a way that it rotates withrotation of the second rotating member 33. The blocking disc 37 is arrangedto, when the second rotating member 33 assumes a blocking state, interactwith the wall 39a of a stop recess 39 formed in the mounting body 15, and to,when the second rotating member 33 assumes a released state, not interactwith the wall 39a of the stop recess 39. When the second rotating member 33assumes the blocking state, the blocking disc 37 is thus received in the stoprecess 39 formed in the mounting body 15. As long as the blocking disc 37 iskept in the stop recess 39, rotation of the cylinder housing 17 is therebyprevented. When the blocking disc 37 is rotated out from the stop recess 39,rotation of the cylinder housing 17 with respect to the mounting body 15 isallowed. The blocking disc 37 is thus movable between a blocking position, in which it prevents rotation of the cylinder housing 17, and a non-blockingposition, in which it allows rotation of the cylinder housing 17.

Thus, when the blocking disc 37 interacts with the wall 39a of the stoprecess 39, the cylinder housing 17 is prevented for rotational movement, i.e.in a first blocking state, and when the blocking disc 37 is rotated out frominteraction with the wall 39a of the block recess 39 of the mounting body 15,the cylinder housing 17 is released for rotational movement, i.e. in a releasedstate. Then, the cylinder housing 17 is rotatable and free to rotate at least360° in both directions with respect to the mounting body 15.

The first cylinder body 19, first rotating member 23, first key receptacle25 and the appropriate key thereto may comprise a mechanical key system ora digital key system. Also the second cylinder body 31, second rotatingmember 33, second key receptacle 35 and the appropriate key thereto maycomprise a mechanical key system or a digital key system.

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 thepossible rotation of the second rotating member 33.

Fig. 3A shows parts of the door lock assembly 1 in an exploded view.The driving member 27, which is arranged to rotate with the rotating member23, has a projection 27a. The driving member 27 extends through a centralopening 24 of the cylinder housing 17. ln this embodiment the first cylinderbody 19 is securely attached to the cylinder housing 17 by means of screws21 that extends through holes formed in the cylinder housing 17.

With reference to Figs. 3B-H mounting of the door lock assembly 1 to adoor 2 will now be described. ln a mounting step, an end portion 17a of thecylinder housing 17 is inserted into the mounting body 15, as illustrated byarrow A in Fig. 3B. ln a following mounting step, the cylinder housing 17 is axially lockedwith respect to the mounting body 15. To this end, a first ball 20 is insertedthrough an insertion hole 26 formed in the mounting body 15 and into arecess 28 formed in the end portion 17a of the cylinder housing 17, asillustrated by arrow B in Fig. 3C. To enable the ball 20 to be received in such 11 a recess 28, the cylinder housing 17 is rotated relative the mounting body 15until the recess 28 is aligned with the insertion hole 26. Then, the cylinderhousing 17 is rotated 90°, as illustrated by arrow C in Fig. 3D, to allow asecond ball 20 to be inserted into a recess 28 through the insertion hole 26,as illustrated by arrow D in Fig. 3E. This is repeated until each of four balls 20has been inserted into a respective recess 28. Finally, the cylinder housing 17is rotated to a position, illustrated in Fig. 3F, in which the insertion hole 26 isnot aligned with a recess 28 to prevent that any of the balls 20 falls out fromits recess 28 under the action of gravity. ln a following mounting step, the door lock assembly 1 is mounted tothe door 2 by securely attaching the mounting body 15 to the door 2 bymeans of screws 16, as illustrated in Fig 3G. The mounting body 15 ismounted with the insertion hole 26 facing upwards to secure that a ball 20does not fall out from a recess 28 upon rotation of the cylinder housing 17with respect to the mounting body 15.

Fig. 3H shows the door lock assembly 1 mounted to the door 2. Then,the axial bearing device 20, 22, 28 prevents the cylinder housing 17 fromaxial movement. Hence, only rotational movement of the cylinder housing 17with respect to the mounting body 15 may be allowed. The axial bearingdevice, that couples the cylinder housing 17 to the mounting body 15, allowsfree rotation, in both directions and unlimited number of turns, of the cylinderhousing 17 with respect to the mounting body 15, whereas it prevents axialmovement of the cylinder housing 17 relative to the mounting body 15. Theaxial bearing device 20, 22, 28 thus forms an axial movement limiting devicearranged to prevent axial movement of the cylinder housing 17 in relation tothe mounting body 15.

With reference to Figs. 4A-D, the function of the second locking device31, 33, 37 of the door lock assembly 1 will now be described.

Fig. 4A illustrates the second locking device 31, 33, 37 in a blockingstate. Then, the blocking disc 37 is situated so as to interact with the wall 39aof the stop recess 39 formed in the mounting body 15 and thereby prevent thecylinder housing 17 from being rotated. Upon insertion of an appropriate key 12 41 in the second key receptacle 35, as illustrated by arrow E in Fig. 4A, thesecond rotating member 33 may be rotated with respect to the secondcylinder body 31, as illustrated by arrow F in Fig. 4B. Then, the blocking disc37 is rotated out of the stop recess 39 to a non-blocking position, asillustrated by arrow G in Fig. 4B. ln the non-blocking position the blocking disc37 does not interact with the wall 39a of the stop recess 39, which enablesrotation of the cylinder housing 17, as illustrated by arrows H and I in Fig. 4Cand Fig. 4D, respectively. The rotation of the cylinder housing 17 causes thedriving member 27 to rotate and finally, after a full turn of rotation, to urge thesecond latch 14 to withdraw into the lock housing 13, as illustrated by arrow Jin Fig. 4E, to unlock the door 2.

Rotation of the cylinder housing 17 in the other direction causes thedriving member 27 to urge the second latch 14 to expel from the lock housing13 to engage the striking plate arranged in the door frame to lock the door 2. ln this case, one full turn is thus required to unlock/lock the door 2. lt ishowever appreciated that further rotation, e.g. another full turn, may berequired to unlock/lock the door 2.

Fig. 5 shows a door lock assembly 101 according to a secondembodiment in an exploded view to disclose the different parts thereof. Thedoor lock assembly 101 has a mounting body 115, which is adapted forsecure attachment to a door 102. A cylinder housing 117 is coupled to themounting body 115. At least partially within said cylinder housing 117 a firstcylinder body 119 is arranged. The cylinder body 119 is securely attached tothe cylinder housing 117 by means of screws (not shown). At least partiallywithin said first cylinder body 119 a first rotating member 123 is arranged. Thefirst rotating member 123 has a first key receptacle 125 and is selectivelyrotatable with respect to the first cylinder body 119 upon insertion of anappropriate key in the first key receptacle 125. ln absence of an appropriatekey, a first locking device 119, 123 prevents rotation of the first rotatingmember 123 with respect to the first cylinder body 119. A driving member 127is coupled to the first rotating member 123 and configured to rotate withrotation of the first rotating member 123. The driving member 127 is then 13 coupled to a recess 129 of the locking mechanism 103 and by rotatingbetween two positions, the driving member 127 urges a latch 114 to expeifrom the lock housing 113 to engage the striking plate arranged in the doorframe to lock the door, or urges the latch 114 to withdraw into the lockhousing 113 to unlock the door 102.

The lock assembly 101 further comprises a second cylinder body 131which may be arranged at least partly within the cylinder housing 117. Asecond rotating member 133 is arranged at least partly within the secondcylinder body 131. The second rotating member 133 has a second keyreceptacle 135 and is selectively rotatable within respect to the secondcylinder body 131 upon insertion of an appropriate key in the second keyreceptacle 135. ln absence of an appropriate key, a second Iocking device131, 133 prevents rotation of the second rotating member 133 with respect tothe second cylinder body 131 and allows rotation of the second rotatingmember 133 with respect to the second cylinder body 131 between a blockingstate and a released state upon insertion of an appropriate key in the keyreceptacle 135.

A blocking member, in the form of semi-circular blocking disc 137, iscoupled to the second part 133b of the second rotating member 133 in such away that it rotates with rotation of the second rotating member 133. Thesecond part 133b of the second rotating member 133 is arranged to rotatewith the first part 133a of the rotating member 133.

The mounting body 115 has an aperture 161 adapted to receive theblocking member 137 of the second rotating member 133.

Fig. 6A shows the door lock assembly 101 in a cross-sectional view todisclose further parts thereof. The mounting body 115 has a stop surface 163configured to interact with the blocking member 137 of the second rotatingmember 133. ln this embodiment the cylinder housing 117 is coupled to the mountingbody 115 by means of an axial bearing device such that the cylinder housing117 is adapted for at least 360° rotation in both directions with respect to themounting body 115. The axial bearing device comprises recesses 128 formed 14 in the cylinder housing 117, balls 120 and a radial groove 122 formed in themounting body 115. The radial groove 122 has a width that is configured toallow a certain axial movement of the cylinder housing 117 with respect to themounting body 115. The recesses 128, the radial groove 122 and the balls120 thus together form an axial movement limiting device that limit axialmovement of the cylinder housing 117.

The driving member 127 comprises two parts 165, 167 that aretelescopically related to each other. A first part 165 of the driving member 127is provided with a projection 169 configured to be received in a recess 129 ofthe locking mechanism 103. A spring 171 is arranged between the two parts165, 167 of the driving member 127 to maintain the projection 169 in therecess 129 upon axial movement of the cylinder housing 117. The spring 171also serves to expel the cylinder housing 117 from the interior of the mountingbody 115 when the blocking member 137 is rotated to a non-blockingposition. An anti-rotation pin 173 is arranged to prevent that the two parts165, 167 of the driving member 127 rotate in relation to each other uponrotation of the cylinder housing 117. The anti-rotation pin 173 is received in arecess partly formed in the first part 165 of the driving member 127 and partlyformed in the second part 167 of the driving member 127.

With reference to Figs. 6A-C, the function of the door lock assembly101 will now be described. Fig. 6A illustrates the second locking device 131,133 in a blocking state. Then, the blocking disc 137 is situated so as tointeract with the stop surface 163 formed in the mounting body 115 andthereby prevent the cylinder housing 117 from axial movement with respect tothe mounting body 115. ln this state, an outer portion 115a of the mountingbody 115 prevents the cylinder housing 117 from being rotated, since therotating member 123 is situated off center in the cylinder housing 117.

Upon insertion of an appropriate key 141 in the second key receptacle,as illustrated by arrow K in Fig. 6A, and rotation of the key, as illustrated byarrows L in Fig. 6B, the second rotating member 133 is rotated with respect tothe second cylinder body 131, as illustrated by arrow M in Fig. 6B. Then, the blocking disc 137 is rotated from a blocking position, illustrated in Fig. 6A, to anon-blocking position, illustrated in Fig. 6B. ln the non-blocking position, the blocking disc 137 does not interactwith the stop surface 163 of the mounting body 115 and may thus be movedout through the aperture 161, which enables axiai movement of the cylinderhousing 117. The cylinder housing 117 will then expel from the interior of theouter portion 115a of the mounting body 115 under the action of the spring171, as illustrated by arrows N and O in Fig. 6C.

The axiai movement Iimiting device, which comprises the recesses128, the radia| groove 122 and the balls 120, allows the cylinder housing 117to be moved axially out of the outer portion 115a of the mounting body 115 apredetermined distance to the position illustrated in Fig. 6C. Then, thecylinder housing 117 is rotatable and may be rotated freely with respect to themounting body 115, as illustrated by arrow P in Fig. 6D. Rotation of thecylinder housing 117 causes the driving member 127 to rotate and, after a fullturn of rotation, to urge the latch 114 to withdraw into the lock housing 113 tounlock the door 102.

Rotation of the cylinder housing 117 in the other direction causes thedriving member 127 to urge the second latch 114 to expel from the lockhousing 113 to engage the striking plate arranged in the door frame to lockthe door 102. lt will be appreciated that many variants of the above-describedembodiments are possible within the scope of the appended patent claims.

Claims (10)

1. Door lock assembly (1; 101) for being arranged at a door (2),comprising a mounting body (15; 115) adapted for secure attachment to a door (2), a cylinder housing (17; 117) coupled to said mounting body (15; 115), a first cylinder body (19; 119) located at least partially within saidcylinder housing (17; 117), a first rotating member (23; 123) located at least partially within the firstcylinder body (19; 119) and selectively rotatable with respect to the firstcylinder body (19; 119), the first rotating member (23; 123) including a firstkey receptacle (25; 125), a driving pin (27; 127) coupled to the first rotating member (23; 123)and configured to rotate with rotation of the first rotating member (23; 123)and operable to rotate and move a latch (14; 114) between two positionsincluding a door locked position and a door unlocked position, and a first locking device preventing rotation of the first rotating member(23; 123) with respect to the first cylinder body (19; 119) in the absence of anappropriate key, and allowing rotation of the first rotating member (23; 123)with respect to the first cylinder body (19; 119) upon the insertion of anappropriate key in the first key receptacle (25; 125), characterized in that said cylinder housing (17; 117) is adapted for at least 360° rotation inboth directions with respect to said mounting body (15; 115), said first cylinder body (19; 119) is configured to rotate with saidcylinder housing (17; 117), and said door lock assembly (1; 101) further comprising a second locking device (31, 33, 37; 131, 133, 137) that has a blockingstate in which said second locking device (31, 33, 37; 131, 133, 137) preventsrotational movement of said cylinder housing (17; 117) and a released state inwhich said second locking device (31, 33, 37; 131, 133, 137) allows rotational 17 movement of said cylinder housing (17; 117) together with the first cylinderbody (19; 119) and the first rotating member (23; 123) to cause the driving pin(27; 127) to rotate between said door locked position and said door unlockedposition.

2. Door lock assembly (1; 101) according to claim 1, wherein thesecond locking device (31, 33, 37; 131, 133, 137) comprises a rotatableblocking member (37; 137), preferably in the form of a semi-circular rotatableblocking member (37; 137).

3. Door lock assembly (1) according to claim 2, wherein said rotatableblocking member (37) in said blocking state is arranged to interact with a wall (39a) ofa recess (39) formed in said mounting body (15).

4. Door lock assembly (1; 101) according to any one of the precedingclaims, wherein said second Iocking device (31, 33, 37; 131, 133, 137)comprises a second cylinder body (31; 131 ), a second rotating member (33;133) located at least partially within said second cylinder body (31; 131) andselectively rotatable with respect to the second cylinder body (31; 131), thesecond rotating member (33; 133) including a second key receptacle (35;135), a blocking member (37; 137) coupled to said second rotating member(33; 133) and configured to move with rotation of the second rotating member(33; 133) and operable to move between said first blocking state and saidsecond released state, and wherein said second Iocking device (31, 33, 37;131, 133, 137) prevents rotation of the second rotating member (33; 133) withrespect to the second cylinder body (31; 131) in the absence of anappropriate key (41; 141 ), and allows rotation of the second rotating member(33; 133) with respect to the second cylinder body (31; 131) upon theinsertion of an appropriate key (41; 141) in the second key receptacle (35;135). 18

5. Door lock assembly (1) according to any one of the precedingclaims, wherein the door lock assembly (1) comprises an axial movementlimiting device arranged to prevent axial movement of the cylinder housing(17) relative to the mounting body (15).

6. Door lock assembly according to claim 5, wherein said axialmovement limiting device comprises at least two balls (20) received in a radialgroove (22) formed in the mounting body (15).

7. Door lock assembly (101) according to any one of claims 1-2 and 4-6, wherein at least one member (117, 131 ), preferably said cylinder housing(117) and/or said second cylinder body (131), is adapted for axial movementwith respect to said mounting body (115), and the second locking device(131, 133, 137) in said released state allows axial movement of said axiallymovable member (117, 131) such that said axially movable member (117,131) is axially movable from the interior of said mounting body (115) to enablerotation of said cylinder housing (117) in relation to said mounting body (115)together with the cylinder body (119) and the rotating member (123) to causethe driving pin (127) to rotate between said door locked position and said doorunlocked position.

8. Door lock assembly according to claim 7, wherein at least one ofsaid mounting body (115) and said cylinder housing (117) is configured toprevent rotation of said cylinder housing (117)within said mounting body(115).

9. Door lock assembly according to any one of claims 1-2, 4 and 7-8,wherein said second locking device (131, 133, 137) comprises an axiallymovable locking member (137).

10. Door lock assembly (1; 101) according to any one of the precedingclaims, wherein at least one of said first locking device (19, 23; 119,123) and 19 said second Iocking device (31, 33, 37; 131, 133, 137) comprises a digital keyIocking device.