AU2011201742A1 - Lock with blocking function - Google Patents

Abstract

Abstract Presented here s a oc k (1; l') hav i nq a b ck i ng function. The luck (1; 1' ) comprises a luck case (3; 3' ) , which lack case (3; 3' ) comprises a lock mechanism S (11 11'). The lock mechanism comprises a bolt (17; 17') so arranged as to adopt a. boltin.g position (A) in which the bol t projects outwa rds inc relation to the lock case (3; 3') , a follower (21; 21' ) for actuation of the bolt (17; 17' ) , which f ollower (21; 21') is 10 rotatably arranged inside the lock case (3; 3'), and a driver (23; 23' ) so arranged as to transfer movement mechan- c L. 1.y f rom the . fo 1ower (21; 21.' ) to the bo 1 (17; 17'). The driver (23; 23' ) is so arranged as to adopt an interlocked position (A) preventing movement 15 of the bolt (1; 1-') when the bolt (1/; 1') adopts its boitinq position (A) , and a blocking mechanism (25; 34) is provided for blocking movement of the driver (23; 23' ) The blocking mechanism (25; 34) is so arranged as to be capable of being positioned in a 20 blocking position and a non-bLocking position. The fo'l 1 ower (21 ; 21 ' ) and the bi ock ng rnecha r i sm (2 5; 34) have devices (21-3, 25-1; 21'-3, 37-3) for operational interaction whereby the blocking mechanism (25; 34) can be actbuated by the follower (21; 21.') from the blocking 25 position (A) . The driver (23; 23') has a part (23-1 23' -1) in rotating interaction with the follower (21; 21') , which part (23-1; 23' 1-) is arranged concentrically with the follower (21; 21') to permit .r:Oaion about the same shal'L.

Description

AUSTRALIA Patents Act COMPLETE SPECIFICATION (ORIGINAL) Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: Name of Applicant: ASSA OEM AB Actual Inventor(s): Lars Jensen, Fredrik Parus Address for Service and Correspondence: PHILLIPS ORMONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Invention Title: LOCK WITH BLOCKING FUNCTION FOR A RULE Our Ref: 912147 POF Code: 470816/509560 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): 2 LOCK WITH A BLOCKING FUNCTION Area of the invention 5 TIO invnl ti. on rcla t:es g] eecirall .1 y to a o ck, anI'd .i.T particular to a lock which permits blocking of an interlocking mechanism inside the lock. Background 10 Locks of the above-men toned kind ore used, for example, in different typos of door. These locks can consist of a lock case, which comprises a follower, SUch as a cylinder follower, for the mechanical. coupling of the follower by means of the rotational 15 movement from a first coupling device. The rotational movement is taken up by the rotation of a cylinder core when this is caused to rotate by means of a key. The "ol.lower ~is in turn coUpled by means o~ a second cou p 1 ing dteviCe, suc as Y'drver, fr -interact-Ion wiSth 20 a lock plungcr, for xample a bolt, in ordur, through rotation of the key in the cylinder core, to bring about a bolting condition for the lock, in which the bolt projects from the lock case, and a non-bolting condition for the lock, in which the bolt in its 25 entirety is essentially accommodated inside the lock case. The bolting condition corresponds to when the hol L has entered IL Lo enqa.qeme.u W.L h a p a LCe or, similar. Thc bolted condition should prcfcrably bc 30 maintained for as long as the non -bolting condition is not required by causing the cylinder core to rotate by means of a key belonging to trhe lock. In order to meet this securiLy requiremenL, the lock can comprise a blocking device which can be. 35 displaced between a blocking position and a release poition. By Cusing the follower to rotoae :b means of a key, the blocking device can be displaced into its blocking position, in which it engages with the second coupling device and in so doing blocks the actuation of - 3 the bolt. In this position, the bolt is prevented from ado p . i i ts non -bot i n ng condi ti. on Fo r as -long a s 1he follower is nLL rotated backwards by means of the first coupling device, so that the blocking device adopts its S release position. In previously disclosed locks of this kind, it has .been possible to manipula the blocking device or the locking device with the help of a thin object such as a steel wire or similar, for example inserted through a 10 bolt opening in the face plate of the lock case. DiscL1ODj re of the u nven Uson One purpose of the invention is to make available an improved lock which permits the blocked interlocking of 15 a bolt in the lock.. Another purpose is to make available a lock in which, in conjunction with the manipulation of the lock by means of objects introduced into the lock case, is prevented or made difficult to a considerable degree. 20 A Lock comprising a lock case and a Lock mechanism is made ava -i lable -i n accorda Tnce w-i th Uhe Foa rego i ng, which lock mechanism is arranged inside the lock case and comprises: a bolt so arranged as to adopt a bolting posi! tion Ain whi cha the bolt proj ects Ou twa rds in 25 relation to the lock case, a follower for actuation of the bolt, which follower is rotatably arranged inside the lock case, a driver so arranged as to transfer movement mechanically from the follower to the bolt, whiclh driver is so ar aned aS to adapt aO .. Lerlocked 30 position preventing movement of the bolt when the bolt adopts its bolting position, and a blocking mechanism for blocking movemnent of the driver, which blocking mechanism is so arranged as to be capable of being positioned in a blocking position and a non-blocking 35 ps ition, the follower and the blocking mechanism having devices for operational interaction whereby the blocking mechanism can be actu ated by the follower from the blocOtk inrg tion, the dri-ver havng a par t n - 4 rotating interaction with the follower, which part is aIrraned conrci ca I ly wi :.h t he Fl I Ower to perni t rotation about the same shaft . A more compact lock can be produced by making S available a lock in which the follower and the driver are arranged concentrically, The lock mechanism can be simply encapsiu lated, A. :rtermore, in order t increase security against manipulation of Lhe lock. The follower and the driver can be arranged with 10 free play in one direction of rotation, so that the fol].ower is capable of displacement relative to the d.iriver a f pita.rl: of the move men t-. In tii Way, I".he follower is able to interact with the blocking mechanism during the f irst part of the movement in 15 order to release the driver from its blocking posi-tion. The driver can be entrained by a second part of the movement. In this way the driver is able to entrain the bolt from its bolting position. The lock can comprise an inner case inside the 20 lock case, the blocking mechanism being arranged inside 1Ihe rin-ner ca se,. The secu r ity of the l ock caTi be fu r[her increased by arranging the blocking mechanism inside an inner case. The follower and .he diver can have intteracing 25 devices for the mechanical coupling of the movement, which interacting devices are arranged inside the inner case Manipulation of the lock is made more difficult and secur .i. Ly is al so .i..nc.reased by a Xangi rig Ihe 30 interacting devices inside the inner case. The blocking mechanism can comprise a spring loaded blocking element that is capable of displacement in a recess in the driver_ In this way, the driver is blocked in its interlocking position by the bolt, as a 35 consequence of which manipulation of the driver is made considerably more difficult. The devices far operational interaction can compri. oe sli di. Ig Yur falc esZ for permit t ing di oplacement of the blocking element when the blocking mechanism and the fol lower mone in relation to one another, One Of the slidiny surfaces uonsisting of an inclined sliding surface . The inclined sliding surface is able in this S way to release the blocking element by rotation of the follower and. to release the driver in this way. Th.e driver l. thus re eased by rotation Of the follower, but not by means of rotation of the driver itself, for example by manipulation. 10 The blocking mechanism can comprise a pivotally arranged lever arm with a hook for blocking the driver i n i t inter].oc ked pooi tion, An a lterna tive arrangement for blocking of the driver in its interlocking position can be achieved in this way. 15 The devices for operational interaction can comprise projections on the follower so arranged, in the event of rotation, as to actuate the hook for release of the driver 20 Description of the drawings T1 lustrative embodimenits of the ilveTlion are described below in detail by way of example, with reference to the Figures, in which: Figures 1 a-b depict plan views of a lock 25 according to a first embodiment, the lock being depicted respectively in a bolting position and in a non-bolting position. Figure 2 depicts an exploded view of a lock mechani.!m in Lhe lock in Figures 1 a-b. 30 Figures 3 a-c depict how the lock mechanism in Figure 2 is actuated from an interlocking position to a non-bolting position. Figure 4 depicts the lock mechanism in Figures 1 a-b in an interlocked position. 35 Figures 5 a-b depict plan views of a lock according to a second embodiment, the lock being depicted respectively in a bolting position and in a fnon-bo.ing poi 0ti.on.

- 6 Figure 6 depicts an exploded view of a lock mechan n-i sm -i n I:he l ock i T-i V iq g res 5 a - b. Figures 7 a-c depict how the luck mechaunism in Figure 6 is actuated from an interlocking condition to S a non-bolting condition. Detailed description of embodiV men ts of- the .i.nventi.on An illustrative first embodiment of a lock I according to the invention is now described with reference to 10 Figures 1-4. The lock 1. comprises, among other things, a lock case 3 constituted by a housing consisting of a firm and a second cover plate (not illustrated) and a lock face plate 5, a handle 7 and a latch bolt 9. The handle ls / is intended to actuate the latch bolt 9 by means of the coupling device 13, which, in conjunction with actuation of the handle 7 via the pivot 15, pushes the latch bolt 9 on a linear path L in and out through an opening in the face plate 5. By means of a spring 20 device 14, the latch bolt 9 is preterably displaced -io a position in which it pr ojecs Irom the Face plate 5 when the handle 7 is in its neutral position. The lock case 3 comprises a lock mechanism 11 consising of, among other things, a bo I t 1.7, 25 exemplified by a swing bolt, a follower 21, which, in the depicted example, consists of a cylinder follower, and a driver 23. The bolt 17, the follower 21. and the driver 23 are in a SLaLe of inLerac g meclani ca. Coup].- . ROt aLI 30 of the follower 21 in the direction of rotation A' causc the driver 23 to entrain the bolt 17 into a bolting position A, as depicted in Figure 1 a. In the bolting position A, the bolt 17 projects from the face plato 5, customarily for the purpose of preventing a 35 door, in which the lock 1 is installed, from opening. In the bolting position A, the driver 23 adopts its corresponding interlocking position A for interlocking the boLt 12.

In Figure 1 b, the lock 1 is depicted in a non bo t ing po s- f R iion 2. The non-ba- I ting pos i :.ion R i s achieved by causiiiiy Llt follower 21 to roLate in a direction of rotation B' - The direction of rotation B' S is a direction opposite to the direction A'. In the non-bolting position B, the driver adopts its correspond j ig free posit on . Rotation of the follower 21 in the direction of rotation B' , causes the driver 23 to entrain the bolt 10 17 so that it is accommodated essentially in its entirety in the lock case 3. Tn this way, the opening of a door is. ptted in the event tha : the 1 ck ca.:e is installed in the door. Figure 2 depicts an exploded view of the lock 15 mechanism 11. 'The lock mechanism 11 consists of the bolt 17, the follower 21, the driver 23, an inner case 19, a blocking mechanism 25, a distance piece 27 and a driver spring 29. The inner case 19 has a cylindrical transcurrent 20 hole so arranged as to accommodate, at least partially, I:.he Fol-1ower 21 and a part. 2.3-1 of .he dr-iver 23. The part 23-1 has a transcurrent hole arranged for rotating interaction with the follower 21. This rotating interaction is achieved by the part 23-1. being arranged 25 concentrically with the follower 21. In this first illustrative embodiment, the part 23 -1 is so arranged as to enclose a first cylindrical part 21-1 of the fol lower 21 having a first radius r., A second cylmindriCal arL 21-2 of: LA f .ollower 21. has a seCond 30 radius r 2 , which is greater than ri and is essentially the samc as a radius r of the transcurrent hole in the inner case 19, thus permitting rotation of the follower 21 therein_ AS illustrated in Figure 3 a, the inner case 19 35 has a chamber 31 that is connected by means of an opening to the cylindrical transcurrent hole - The chamber 31 is so arranged as to accommodate the b l ockin.g mec hanTi sm 25 , wh i c h bl ock ing me hani sm 25 - 8 comprises a blocking element 25 1 in interaction with a bl c k ing spri nq 25-2, the. reby prod c-inq a sprung blocking element 25-1. Thie second cylindrical part. 21. 2 of the follower 5 21 has a radial recess 21-3 arranged in its outer per-ipheral surface. The radial recess 21-3 is provided to rec eive the blocking element t 25-1 , t hereby blocking the driver 23 from leaving the inLerlocking position A with the driver in the interlocking position A. The 10 radial recess 21-3 and the blocking element 25-1 together constitute devices for operational interaction between :.he folower 2 :1 and the bloak mechanim 25. The driver 23 has a corresponding radial recess 23-4, which is aligned with the radial recess 21-3. 15 It can. be seen in -iqure 3 a that the radial recess 21-3 has a first side wall 21-3' which constitutes a sliding surface that is inclined in relation to a second side wall 21-3'' in the radial recess 21-4, which second side wall constitutes an 20 opposing side of the radial recess 21-3 in relation to the Fi rst side wa1- 1 21 -3' . 'The r adial recess 21 -3 thus constitutes a converging recess, where the first. side wall 21-3' presents a radially inward-converging sur face towards the second side wall 21-3'' . ITe first 25 side wall 21-3' thus permits the displacement of the blocking element 25-1 radially outwards in conjunction with rotation of the follower 21 in the direction of rotation B'. Rotation of the folower 21. in the dir.ecLon of: roaon A' does noL permiL displacemenL 30 of the blocking element 25-1 from the radial recess 21 3 when the second side wall 21 3'' is essentially parallel with the side surface 25-3 of the blocking element, as clearly illustrated in Figure 3 a. The displacement effect is achieved preferably by the first 35 wall 21-3' constituting the wall which, in the event of rotation of the follower 21 in the direction B' , bears against the blocking element 25.

- 9 Alternatively, the first and second walls of the ra di al reces s can be aral1- I el wi th one anat her, he blocking elemienL in this case haviiig an inicliIned sliding surface on its side which bears against the S first wall of the radial recess in the event of rotation of the follower in the direction B' The icnined siding surface is prefferably farmed so that the blocking element tapers in its direction of ext ens ion towards the follower. 10 In order to prevent manipulation of the driver 23 from releasing the blocking element. 25-1, the opposing wal L of the rece 23 -4 a f the d.I ver 23 are preferably parallel. The driver 23 has a driving arm 23-2 for tie 15 purpose of engaging with a recess 1--1 in the bolt 1-/ the driver 23 being permitted upon actuation Lo be actuated continuously by the bolt 17 between its bolting position A and its non-bolting position B. The transcurrent hole in the part 23-1 has a 20 plurality of radial recesses 23-3 running along the per iph ery o f the transc u rrent L hoal e, whichi recesses are intended to interact with corresponding radial projections 21-4 in the follower 21. The extent of the radal ra 1 ecesses 2 3-3 in the ha. zontal Sense i.s 25 preferably greater than the extent of the corresponding radial projections 21-4 in the horizontal sense, as a result of which free play is formed between the radial recesses 23-3 and the radia l projections 21-4. A co.a irn degree Of.[lIll.Led relaLive r1. V O-aLtS .on beLweer Lhe 30 follower 21 and the driver 23 is Lhus permit ted in conjunction with the rotational movement of thc follower 21 or the driver 23. This is illustrated in greater detail in Figures 3 a-c and Figure 4. The spring 29) is arranged in the horizontal sense 35 and is clamped between one of the radial projections 21.4 and one of the radial recesses 23 -3 in order to exert pressure between them. In this way, only displacement at the b1 oc ki. nq element 25-1 f:r o the - 10 radial recess 21-3 is permitted by the constant ap P-i caion o F F force by i he f oi ower 21 i n I:h. e direction of rotaLioi B' . Thu security of the lock is increased in this way, as it is now more difficult to 5 raise the blocking element 25-1 up and out of the recess 21-3 by mistake through displacement. The spring 29 also ensures that thOe recess 21-3 in the follower 21 is aligned with the blocking element 25--1 when tiie driver 23 adopts its interlocking 10 position A. The distance piece 27 is so arranged as to enclose the first cyLindrical parCt 21-1I w-i th the part 23-1 of the driver positioned between the follower 21 and the distance piece 27 in order to hold together the 15 arrangement consisting of the follower 21, time driver 23 and the inner case 19. The follower 21 preferably bears against the first cover plate, and the distance piece 27 preferably bears against the opposing second cover plate. This permits a compact design of the lock 20 1. W ith ref-erence to F-ires 3 a -c, h subs euent function of the lock mechanism 11 is illustrated when the driver 23 is actuated from its interlocking position A. to its free position n. Other details inside 25 the lock case 3, suci as the bolt 17, have been omitted for the purpose of making clear the function of the lock mechanism 11. Depicted in Figure 3 a is the locking mechanism in .i LS in erlock.Ing pos L ion A, .1n which he block1.1.n 30 element 25-1 blocks the movement of the driver 23 by engaging with the radial recess 21 3 of thc follower 21 and the radial recess 21-4 of the driver 23. The blocking element 25-1 is accommodated in the radial recesses 21-3 and 23-4 respectively and is retained 35 therein by means of the blocking spring 25 -2. In the event of rotation of the follower 21 in the direction of rotation B', the first surface 21-3' of the radia .recess 21-3 bears against a lower surface - 11. 25-3 for the blocking element 25-1, as illustrated in I-iqure 3 b. The sidincj surface es that ar ccmst uted by the first wall 21-3' and the lower surface 25-3 thus permit the blocking element 25 -1 to be raised up and S out of the radial recesses 21-3 and 23-4 in conjunction with the aforementioned rotation. The freecc play between the radil projections 21-4 and the radial recesses 23-3 and between the radial recess 21-3 and the radial recess 23-4 respectively 10 permits a first part of the movement in the direction of rotation B' , in which the driver 23 does not execute any rota tion and accorndingly doe not bring about any actuation of the bolt 17. During this first part of the movement, the blocking element 25-1 is raised up and 15 out of the radial recess 21-3. further rotation of the follower 21 in the direction of rotation B' causes rotation of the driver 23 and thus actuation of the. bolt 17 from the bolted position A to the non-bolted position B. In conjunction with this second part of the 20 movement, the tolLower 21 entrains the driver 23 in a rOtat t.ing liioverTieriL." by- fl n oF tie radial project-is 21-4 engaging with the surfaces 33 of the radial recesses 23-3, as illustrated in Figure 4. .The design of thel radial. proj ec tio.ns 21-4 and the 25 radial recesses 23-3 thus permits two functions thanks to the free play; these are, in conjunction with a first part of the movement, to cause rotation of only the follower 21. in order to release the driver 23 from .iLS b lIocked inter locked posi.LIon A and Subsequ en Li.y, .n1 30 conjunction with a second part of the movement, to entrain the driver 23 in order to permit actuation of the bolt 17. Depicted in Figure 3 c is the locking mechanism 11 when the driver is in its free position B after having 35 being rotated through the first part of the movement and through the second part of the movement in the direction of rotation B' . This Figure corresponds to what is dep .icte1:d s. in Vi gure 1 b.

- 12 An illustrative second embodiment of a lock 1' accord-ing to the -i-vention is now descr-ibed wi th refrucnue tu Figures 5 a - 7 c. In a similar munier to that previously described in relation to Figures 1 a S and 1 b, the lock comprises a lock case 3' which is constituted by a first and a second cover plate (not i l lustr ated) and a f ace pla te 5' The lock 1' a lso comprises a latch bolt 9' , which is capable of actuation by means of a handle 7' - The function of the 10 latch bolt 9' and the handle 7' is similar to that already described above, for which reason further description of this hasL4 been omi t ted here, The lock case 3' also comprises a lock mechanism 11' , which consists of, among other things, a bolt 17', Is a follower 21' and a driver 23'. Similarly to the first embodiment, the bolt 23' is capable of mechanical actuation by means of the follower 21', in this example a cylinder follower, via the driver 23' Depicted in Figure 5 a is the bolt 17' in its 20 bolting position A, which can be achieved by causing he Follower 21' Lo ro:tae in a direction of rotation A'. In the bolting position A, the driver 23' adopts its corresponding interlocking position A. Depicted in Figure 5 b is the bolt 1/'' in its non 25 bolting position B, which can be achieved by causing the follower 21' to rotate in a direction of rotation B' In the non-bolting position B, the driver 23' adopts its corresponding free position B. Figure 6 depicLs an exploded v.i.ew O Lhe lock 30 mechanism 11' . The lock mechanism 11' comprises the driver 23', two followers 21', the bolt 17', a blocking mechanism 34 and cover plates 43-1 and 43-2. The blocking mechanism comprises a blocking element housing 35, a blocking element 37, a lever arm spring 39 and a 35 pivot shaft 41. The driver 23' has a part 23' -1 in rotatable interaction with the followers 21', which driver 2.3' has an entraiT-ing arm 23-' 2 that is so ar-riged., in.

- 13 conjunction with rotation of the followers 21' , as to actuate t:he bol t 17' mechanical ly between iLs bolting position A and its non-bolting position B. The followers 21' are arranged concentrically with the part S 23' -1 of the driver in that the followers 21' are enclosed by the part 23'-1, which part 23'-1 has a c i.T.'cular transcurrent hole 23' -5 for the arrangement of the followers 21' therein. The blocking element housing 35 has a channel 35 -1 10 for accommodating the blocking element 37 therein. The blocking element housing 35 has an upper surface 35-5, .in whi. h the channel 35-1 has an opening 35-6. A groove 35-2 is present in the remote end of the channel 35-1 in relation to the opening 35-6. The groove 35-2 is Is oriented transversely in relation to the direction of extension of the channel 35-1. The blocking element 37 comprises a lever arm 37-4 and has a hook 37-1 at its corresponding end for the purpose of enabling the hook 37-1 to engage with the groove 35-2 when the driver 23' 20 adopts its interlocking position A. The blocking el emen t 37 is Lhus pi votabl e i bthe channe l 35-1 v i a an articulation that is formed by a transcurrent hole 37-2 in the blocking element and a transcurrent hole 23' -3 in the driver 23' and the pivot shaft: 41 accommodated 25 in these holes. A lever arm spring 39 is arranged in the chamber 35-3 of the blocking element housing 35, which lever arm spring 39 bears against the blocking element 37 and Lhus exerLS a force on Lhe hook 37-1.or .Ls engagement 30 with the groove 35-2 when the driver 23' is in its interlocking position A. The blocking element 37 has a recess 37-3 at one end of the blocking element 37, which end is accommodated in the blocking element housing 35. This 35 end projects into the circular transcurrent hole 23' - 5 through an opening 23' -4 in the part 23' -1. The blocking element 37 is so arranged as to be actuated by means of an axial. project on 21' -3 on eac h .f the - 14 followers 21, which projections engage with the recess 37-3, Ro~ation) of the FO lower ts 21' i n c junc Ti wi:h a first part of the Lovement, starting from the interlocking position A, causes the blocking element 37 5 to pivot about the pivot shaft 41 in a direction away from the groove 35-2 in order to push the hook .37-1 out o~F .i In con-j unct.ion w. ith a second part of the movement of the followers 21' , the blocking element 37 slides partially out of the channel 35 -1 through the 10 opening 35-6 and permits rotation of the driver 23' dur-ing the second part of the movement. The blocking elemet housing 35 has an anti- poking guard 35-4, which consists of a ridge next to the opening 35-6 along a side adjacent to the bolt 17' .1.5 ihe function of the lock mechanism .11' when the driver 23' is actuated from iLs interlocking position A to its free position B is illustrated below with reference to Figures 7 a-c, Other details inside the lock case 3' , such as the bolt 17', have been omitted 20 tor the purpose ot making clear the function of the l oc k me c han i sm 11. Tn order Further to faCI i t understanding, only one of the followers 21' is depicted here . The functional principle and the structure are the same for both flowers 21. 25 Figure 7 a depicts the lock mechanism 11' when the driver 23' is in its interlocking position A. In the interlocking position A, the driver 23' bears against the surface 35-5, which prevents access to the blocking element L 3' i. pa..cular, L. he aLi-pokig guard 35-4 30 is positioned in such a way as to make access to the blocking clement 37 more difficult by functioning as a blocking barrier to the blocking element 37 in the event of attempts at manipulation being made, for example via a gap between the bolL 17' and the face 35 plate 5' The hook 37-1 of the blocking element 37 is in engagement with the groove 35-2, thereby preventing a ctuation . f the river 23' - 'The cpri 39 in th~is - 15 position pushes against the blocking element's 37 in order to ensure the engagement between the hook 37-1 and the groove 35-2. Rotation of the follower 21' in the direction of S rotation B' causes the projection 21' -3 the recess 37-3 and to apply a force F thereto. Tn conjunction with the f irsU part of the movement of the follower 21' , the hook 37-1 is forced by pivoting about the pivot shafLt 41 in a direction of rotation which corresponds to the 10 direction of rotation A' , in conjunction with which the blocking element 37 is released. This is illustrated in Figure 7 b. Depicted in Figure 7 c is a position of the lock mechanism 11' in which the released blocking element 37 15 slides in the channel 34-1 during the second part of the movement of the follower 21' in the direction of rotation B' . It should be appreciated that the first part and the second part of the movement can consist of a continuous rotating movement, both for the first and 20 tor the second embodiment . Wheri t he bl ock i rig e 1 ement 37 has been rel eased from its blocking position, actuation of the driver 23' is thus permitted through the interaction between the projection 21' -3 and the recess 37-3 in the blocking 25 element 37, which interact mechanically with the driver 23' via the pivot shaft 41. When the driver 23' has been released from its interlocking position A, actuation of the bolt 17' is permitted, thereby enabling Lhe bolL Lo adopL .LS non-boling poSM iO B. 30 Illustrative embodiments of the invention are described abovc. The invention is not restricted to these embodiments, but can be varied freely within the scope of the following Patent Claims. For example, the lock can be of the Espagnolette hook bolt type, and the 35 followers 21, 21' can can consist of push-actuated followers or handle followers_ - 16 Patent Claims 1. Lock (1; 1' ) consisting of a luck case (3; 3' ) and a lock me chani sim ( 11 ; 11 ' ) , which 1 lock mechanism ( 11; 5 11') is arranged inside the lock case (3; 3') and comprises; a boIt (1.7: 17'7) so ar ranged as to adopt a bott:Ing position (A) in which the bolt projects toutwards in relation to the lock case (3 ; 3'), 10 a follower (21; 21') for actuation of the bolt (17 ; 1.7') , which follower (21; 21') is rotatably arranged inside the lock case (3; 3', a driver (23; 23' ) so arranged as to transfer movement mechanically from the follower (21, 21') to 15 the bolt. (.1'; 1 ' ) , which driver (23; 23') JiS 0 arranged as to adopt an interlocked position (A) preventing movement of the bolt (17; 17' ) when the bolt (17; 17' " adopts its bolting position (A) a blocking mechanism (25; 34) for blocking 20 movement of the driver (23; 23'), which blocking meanic ism (25; 34) is so arranged as to be capable of being positioned in a blocking position and a non blocking position, the f1oll:. ower (21 ; 211' ) and the block I ng mechanism 25 (25; 34) having devices (21-3, 25-1; 21' -3, 37-3) for operational interaction whereby the blocking mechanism (25; 34) can be actuated by the follower (21; 21' ) from the blocking position (A), the diver (23; 23') having a parL (23 -1; 23' -1) 30 in rotating interaction with the follower (21; 21'), which part (23 1; 23' 1) is arranged conccntrically with the follower (21; 21' ) to permit rotation about the same shaft_ 35 2- Lock (1; 1' ) according to Claim 1, in which the follower (21; 21') and the driver (23; 23') are arranged with free play in one direction of rotation, so that the 101 lower (21; 21') i cap a b.1 e of - 1,7 displacement relative to the driver (23; 23') during a F i rst qar: F I: he moveme , 3 Lock (1; 1') according to Claim 2, in which the S follower (21; 21' ) interacts with the blocking mechanism (2.5; 34) during the first part of the movement iT- order to lease the dx.ver (2:3; 23 ' ) from its blocking position (A) 10 4. Lock (1; 1') according to Claim 2 or 3, in which the driver (23; 23' ) is entrained by a second part of the movement . 5. Lock (1; l') according to one or other of the 1. preceding Claims, in which the driver (23; 23') is provided with an arm (23-2: 23' -2) for actuation of the bolt (17; 17'). 6 Lock (1) according to one or other of the 20 preceding C.laims, comprising an inner case (19) inside 1:.he lock- case (3), the black-iTing echan-ism (25) be irig afranged inside the inner case (19) 7. Lock (1. ) according to Claim 6, in which ti.e 25 follower (21) and the driver (23) have interacting devices (21-3, 25-1) for the mechanical coupling of the movement, which interacting devices (21- 3 , 25 1) are arranged inside the inner case (19) 30 8. Lock (1) according to one or other of the preceding Claims, in which the blocking mechanism (25) comprises a spring-loaded blocking element (25-1) that is capable of displacement in a recess (23-4) in the driver (23) 35 9. Lock (1) according to Claim 8, in which the devices (21-3, 25-1.) for operational interaction comprise oilid.in T13urfa3ce% (21-3' ,25-3) for producing - 18 displacement of the blocking element (25-1) when the block-ing mechanism (25) and the follower (21) move -in relation to one another, one of the sliding surfaces consisting of an inclined sliding surface. S 10. Lock (l') according to one or other of Claims 1-5, i. n wh i.ch t he b locking mecAh.Yai.sm1 (25) conpri ses a pivotally arranged lever arm (37) with a hook (37-1) for blocking the driver (23' ) in its interlocked 10 position (A). 11. Lock (1') according :.o Claim 10 , in w hicoh the devices (21' -3, 37-3) for operational interaction comprise projections (21'-3) on the follower (21') so 15 arranged during rotation as to actuate the hook (3-1-1) for release of the driver (23'). 12. Lock (W') according to Claim 10 or 11, in which the follower (21') is so arranged as to actuate the 20 bolt (17') via the blocking element (37) . 13. Lock (1') according to one or other of Claims 10 12, in which the follower (21' ) is arranged inside the part (2.3' -1) ,. 25 14. Lock (1; 1') according to one or other of the preceding Claims, in which the bolt (17; 17') is a swing bolt.

Abstract Presented here s a oc k (1; l') hav i nq a b ck i ng function. The luck (1; 1' ) comprises a luck case (3; 3' ) , which lack case (3; 3' ) comprises a lock mechanism S (11 11'). The lock mechanism comprises a bolt (17; 17') so arranged as to adopt a. boltin.g position (A) in which the bol t projects outwa rds inc relation to the lock case (3; 3') , a follower (21; 21' ) for actuation of the bolt (17; 17' ) , which f ollower (21; 21') is 10 rotatably arranged inside the lock case (3; 3'), and a driver (23; 23' ) so arranged as to transfer movement mechan- c L. 1.y f rom the . fo 1ower (21; 21.' ) to the o 1t (17; 17'). The driver (23; 23' ) is so arranged as to adopt an interlocked position (A) preventing movement 15 of the bolt (1; 1-') when the bolt (1/; 1') adopts its boitinq position (A) , and a blocking mechanism (25; 34) is provided for blocking movement of the driver (23; 23' ) The blocking mechanism (25; 34) is so arranged as to be capable of being positioned in a 20 blocking position and a non-bLocking position. The fo'l 1 ower (21 ; 21 ' ) and the bi ock ing rnecha r i sm (2 5; 34) have devices (21-3, 25-1; 21'-3, 37-3) for operational interaction whereby the blocking mechanism (25; 34) can be actbuated by the follower (21; 21.') from the blocking 25 position (A) . The driver (23; 23') has a part (23-1 23' -1) in rotating interaction with the follower (21; 21') , which part (23-1; 23' 1-) is arranged concentrically with the follower (21; 21') to permit .r:Oaion abouL Lhe same shalL. 30 (Fig. 1) 11 1113 777 -J 15 14 Fig. la

Claims (14)

1. Lock (1; 1' ) consisting of a luck case (3; 3' ) and a lock me chani sim ( 11 ; 11 ' ) , which 1 lock mechanism ( 11; 5 11') is arranged inside the lock case (3; 3') and comprises; a boIt (1.7: 17'7) so ar ranged as to adopt a bott:Ing position (A) in which the bolt projects toutwards in relation to the lock case (3 ; 3'), 10 a follower (21; 21') for actuation of the bolt (17 ; 1.7') , which follower (21; 21') is rotatably arranged inside the lock case (3; 3', a driver (23; 23' ) so arranged as to transfer movement mechanically from the follower (21, 21') to 15 the bolt. (.1'; 1 ' ) , which driver (23; 23') JiS 0 arranged as to adopt an interlocked position (A) preventing movement of the bolt (17; 17' ) when the bolt (17; 17' " adopts its bolting position (A) a blocking mechanism (25; 34) for blocking 20 movement of the driver (23; 23'), which blocking meanic ism (25; 34) is so arranged as to be capable of being positioned in a blocking position and a non blocking position, the f1oll:. ower (21 ; 211' ) and the block I ng mechanism 25 (25; 34) having devices (21-3, 25-1; 21' -3, 37-3) for operational interaction whereby the blocking mechanism (25; 34) can be actuated by the follower (21; 21' ) from the blocking position (A), the diver (23; 23') having a parL (23 -1; 23' -1) 30 in rotating interaction with the follower (21; 21'), which part (23 1; 23' 1) is arranged conccntrically with the follower (21; 21' ) to permit rotation about the same shaft_ 35

2- Lock (1; 1' ) according to Claim 1, in which the follower (21; 21') and the driver (23; 23') are arranged with free play in one direction of rotation, so that the 101 lower (21; 21') i cap a b.1 e of - 1,7 displacement relative to the driver (23; 23') during a F i rst qar: F I: he moveme

, 3 Lock (1; 1') according to Claim 2, in which the S follower (21; 21' ) interacts with the blocking mechanism (2.5; 34) during the first part of the movement iT- order to lease the dx.ver (2:3; 23 ' ) from its blocking position (A) 10

4. Lock (1; 1') according to Claim 2 or 3, in which the driver (23; 23' ) is entrained by a second part of the movement .

5. Lock (1; l') according to one or other of the 1. preceding Claims, in which the driver (23; 23') is provided with an arm (23-2: 23' -2) for actuation of the bolt (17; 17').

6 Lock (1) according to one or other of the 20 preceding C.laims, comprising an inner case (19) inside 1:.he lock- case (3), the black-iTing echan-ism (25) be irig afranged inside the inner case (19)

7. Lock (1. ) according to Claim 6, in which ti.e 25 follower (21) and the driver (23) have interacting devices (21-3, 25-1) for the mechanical coupling of the movement, which interacting devices (21- 3 , 25 1) are arranged inside the inner case (19) 30

8. Lock (1) according to one or other of the preceding Claims, in which the blocking mechanism (25) comprises a spring-loaded blocking element (25-1) that is capable of displacement in a recess (23-4) in the driver (23) 35

9. Lock (1) according to Claim 8, in which the devices (21-3, 25-1.) for operational interaction comprise oilid.in T13urfa3ce% (21-3' ,25-3) for producing - 18 displacement of the blocking element (25-1) when the block-ing mechanism (25) and the follower (21) move -in relation to one another, one of the sliding surfaces consisting of an inclined sliding surface. S

10. Lock (l') according to one or other of Claims 1-5, i. n wh i.ch t he b locking mecAh.Yai.sm1 (25) conpri ses a pivotally arranged lever arm (37) with a hook (37-1) for blocking the driver (23' ) in its interlocked 10 position (A).

11. Lock (1') according :.o Claim 10 , in w hicoh the devices (21' -3, 37-3) for operational interaction comprise projections (21'-3) on the follower (21') so 15 arranged during rotation as to actuate the hook (3-1-1) for release of the driver (23').

12. Lock (W') according to Claim 10 or 11, in which the follower (21') is so arranged as to actuate the 20 bolt (17') via the blocking element (37) .

13. Lock (1') according to one or other of Claims 10 12, in which the follower (21' ) is arranged inside the part (2.3' -1) ,. 25

14. Lock (1; 1') according to one or other of the preceding Claims, in which the bolt (17; 17') is a swing bolt.