SE542963C2 - Door lock - Google Patents

Abstract

(57) AbstractA door lock (1) according to the invention comprises between the follower (4) and the bolt (3) a separate deadbolt piece (6), which is arranged to move both in relation to the bolt (3) and in relation to the follower (4). The bolt (3) has an oblique surface (12) and the deadbolt piece (6) has a corresponding oblique surface, which guide the deadbolt piece to rotate away from the open position of the deadbolt piece (6), when an external force is directed to the bolt (3).

Description

ti) 2G Door took Fieid of the invention The invention reiates to door tooks. in particutar, the invention retates to the deadboit arrangernents of door tooks.

Prior art in door tooks, it is known to use a deadbott arrangernent to keep the bott extended,mere preoisety, to keep the end of the bott extended, wherein the bott is not abte toshift inside the door took, if there is an attempt to push the bott from the end of thebott towards the door took. The deadbott of a door took can be erranged to activate atthat time, when the door is turned shut, wherein the striker piate in the framemomentarity guides the bott towards the door took. Acttvation of the deadbott mayatso occur by means of a separate deadbott tever or button connected to the dooriock, in addition to which normat buttons for opening and oiosing the door can be connected to the door took.

An attempt can be made to manipuiate the deadboit open by a hit to the door tookor the bott in order that the impuise caused by the hit woutd shift the parts of thedeadboit arrangement inside the door took such that they woutd shift away from thedeadboit position. in this case, the bott ooutd be pushed from the end of the bott inside the door took, and the door ooutd be opened without authorization.

Brief description of the tnvention The object of the invention is to provide a soiution to the probiem described above.the object is achieved in the manner described in the independent ctaini. The dependent otairns describe various embodirnents of the invention.

A door took 'i according to the invention oomprises a took body 2, a bott 3 and a fottower 4. The foitower 4 is rotatabty arranged in retation to the handte spindie axis 5 2G 3G and spring-toaded towards the first position, in which the end 3A of the bott 3,associated with it, is extended from the took body 2. The fottower 4 is further arrangedto putt the end 3A of the bott inside the took body 2, as the fottower is rotated due to arotative force directed onto the hanctte spindte akis 5. This rotative force for openingthe door comes from a handte outside the door took, which is connected to a spindtedisposed onto the handte spinctte axts. The handte and spindte are thus instatted intothe door took (onto the handte spindte axis) for the purpose of its ncrrnat use. tn ptace of the hanctte may atso be a rotary knob.

Between the fottower 4 and the bott 3 ts a separate deadbott piece 6, which isarranged to move both in rotation to the bott 3 and in rotation to the fottower 4. Thefottower has a guide surface 7, and the deadbott piece has a corresponding guide surface 8, which is against the guide surface 7 of the fottower.

The bott 3 atso has a rotation surface 9, and the deadbott piece 6 has acorresponding rotation surface 1G. Between the rotation surface 9 and thecorresponding rotation surface 1G is a otearance tt, as the end 3A of the bott isextended from the took body 2 and the fottower 4 is in the first position. The deadbottpiece ö is arranged to shift towards the rotation surface 9 of the bott 3, as the fottower4 is rotated due to a rotative force directed onto the handte spindte axis 5. in thiscase, the ctearance tt is removed, and the rotation surface 9 is against thecorresponding rotation surface ti), and further, the deadbott piece 6 rotates into theopen position. As the fottower is further rotated, the deadbott piece 6 being in theopen position, the deadbott piece 6 ts arranged to shift tinearty parattet with thetongitudinat axis of the bott 3, at the same tirne shifting the end 3A of the bott towardsthe took body. Thus, the end of the bott shifts inside the took body.

The bott 3 further comprises an obtique surface 12, and the deadbott piece 6cornprises a corresponding obtioue surface 13. The obtique surface 12 is arranged toguide the externat force directed to the bott 3 onto the oorresponding cbtique surface13 and, henoe, via the deadbott piece 6, onto the taterat structure 2A of the took body2A. in addition, the took body 2 cornprises a support surface 14, and the deadbottpiece 6 a corresponding support surface 15. The oorresponding support surface 15 is arranged to shift against the support surface 14 due to en externat force directed to 1G 3G the bott 3, thus oreyenting the end 3A of the bott frorn shifting inside the tock body 2; :arr-tt tätt; :ttttsïitstoed to riotate dne to an exterriai toroe directed to List of figures in the fotiowing, the inyention is described in ntore detait with reference to the accornpanying figures, in which Figs. 1 - 3 Figs. 4 - 6 Figs. 7 - 9 Figs.1G-11 Fig. 12 Fig. 13 rig. 14 show an exarnote of an embodirnent according to the invention,the bott extended in a normai situation, show the exantpte of Figs. 1 - 3, the bott extended under theinftuence of an externa! force directed thereto, show the exanipie of Figs. 't - 3, when the rotation of thefottower is initiated tor shifting the end of the bott inside the tookbody, show the exarnpte of Figs. t - 3, the end of the bott beingshifted inside the took body, shows an exarnpie of a bott, which is used in an embodirnentaccording to the invention, shows another exarnpie of a bott, which is used in anemhodirnent according to the invention, and shows an exarnpte of a deadbott piece, which is used in an embodirnent according to the invention.

Description of the invention Figs. t - 3 show an exarnpie of an ernbodirnent of a door iock according to the invention, in which the bott is normaity extended, i.e. more precisety, the end 3A of the bott is extended from the iock body 2 of the door took. A door took 1 according to the invention cornprises a took body 2, a bott 3 and a foiiower 41 The tottower 4 is rotatabiy arranged in retation to the handie soindte axis 5 and spring-ioaded towards the first position, in which the end 3A of the bott 3. associated with it, is extended frorn 3G the took body 2. The foitower 4 is further arranged to puit the end 3A of the bott insidethe iock body 2, as the fottower is rotated due to a rotative force directed onto thehandie spindte axis 5. This rotative force for opening the door comes from a handteoutside the door iook, which is connected to a spindie disposed onto the handtespindte axis. tn normat use, by rotating the handie, the bott 8 is thus shifted inside thetock body in order that the end of the bott shifts comptetety or atmost compieteiy inside iook body.

The door took t, more preciseiy its took body 2, has a point, which is catied thehandte spindte axis 5. The foitower 4 and the drivers 28 piaoed inside the took bodyare disposed in succession onto the handte spindte axts, parattet with the axis itne.The drivers 28, which can be caiied the interna! driver and the externai driver, are onboth sides of the fotiower 4. The drivers and the foitower are arranged to rotate inretation to the handte spindie axis 5. Both drivers have a spindte hoie 28A for thespindte. The spindie instatted into the spindte hote rotates the driver, when the handte connected to the spindte is rotated.

The driver 28 is to be connected to the foitower 4 in order that the force rotating thehandie can be guided to the foitower, wherein the fotiower rotates and, at the sametime, shifts the bott 3 into the took body in order that the door can be opened.Between the driver and the fotiower is used a iatch 26 for transmitting force. in thefigures of this description, the tatch 28 is shown by way of exarnpie, using just acurved iine. in the exampte of the figures, the foitower has a rotationat axis point(btaok dot) of the iatch, in retation to which the tatch can be rotated into forcetransmission connection or away from force transmission connection. tn forcetransmission connection, the other end of the iatoh ts against the force transmissionprotection 27 of the driver. in the exampte of the figures, the tatch 26 is in forcetransmission connection. in this connection, the handte spindte axis 5, the driver 28,the spindie hote 28A, and the iatch 28, which are per se known parts or points, areshown to iitustrate the normat use of the door took, in which the door is opened byrotating the handte. if the iatch soiution 8 is guided (for exampte, etectronioatiy ormeohanicatty) into the force transmission position, the rotation force is transmitted viathe iatch from the driver 28 to the fotiower 4, which further shifts the bott 3 inside the 16 39 iock body 2. in this case, the end 3A of the boit shifts compieteiy or aimost cornpieteiyinside the iock body. if the iatch soiution 6 is not guided into the force transmission position, a rotation force directed to the handie rotates, via the spindie, oniy the driver.

Betis/een the foiiower 4 and the boit 3 is a separate deadboit piece 6, which isarranged to move both in reiation to the boit 3 and in reiation to the foiiower 4. Thefoiiower has a guide surface T, and the deadbcit piece has a oorresponding guide surface 8, which is against the guide surface 7 of the foiiower.

The boit 3 has a rotation surface 9, and the deadboit piece 6 has a correspondingrotation surface 16. Between the rotation surface 9 and the corresponding rotationsurface 10 is a clearance 11, as the end 3A of the boit is extended from the iock body2 and the foiiower 4 is in the first position. The deadboit piece 6 is arranged to shifttowards the rotation surface 9 of the boit 3, as the foiiower 4 is rotated due to arotative force directed onto the handie spindie axis 6. in this case, the ciearance 11 isremoved, and the rotation surface 9 is against the corresponding rotation surface 10,and, further, the deadboit piece 6 rotates into the open position. As the foiiower isfurther rotated, the deadboit piece 6 being in the open position, the deadboit piece 6is arranged to shift iineariy paraiiei with the iorigitudinai axis 5A of the boit 3, at thesame time shifting the end 3A of the boit towards the iock body. Thus, the end of theboit shifts inside the iock body. The door can be opened normaiiy by rotating the handie.

Figs. Y - 9 show a situation, in which the foiiower 4 is rotated just enough that thedeadboit piece 6 has shifted into the open position. Rotating the foiiower has causedthe disappearance of the ciearance 11 from between the rotation surface 9 and thecorresponding rotation surface 19, wherein these surfaces are against each otherforrning a support point area for rotating the deadboit piece into the open position. inthis case, the obiioue surface 12 of the boit and the corresponding obiidue surface 13of the deadboit piece can aiso guide the rotation the deadboit piece into the openposition. it may aiso be noted that, as the door is opened normaiiy, the supportsurface 14 of the iock body 2 does not prevent the deadboit piece 6 from rotating intothe open position, which is thus visible in Figs. 7 - 9. in Figs. 2, 3, 6, 6, 8, 9 and 11, the follower is not shown in order that the deadbolt piece 6 and the rear end 6B of the bolt would be more visible.

Thus, the bolt 3 further comprises an oblique surface 12, and the deadbolt piece 6comprises a corresponding oblique surface 13. The oblique surface 12 is arranged toguide the external force directed to the bolt 3 onto the corresponding oblique surface13, and, hence, via the deadbolt piece 6, onto the lateral structure 2A of the lockbody. ln addition, the lock body 2 comprises a support surface 14, and the deadboltpiece 6 a corresponding support surface 15. The corresponding support surface 15 isarranged to shift against the support surface 14 due to an external force directed tothe bolt 3, thus preventing the end 3A of the bolt from shifting inside the lock body 2.

The deadbolt piece 6 is thus arranged to rotate, due to an external force directedto the bolt 3, away from the open position of the deadbolt piece 6. An external force,such as a hit directed to the bolt, pushes the bolt 3 inside the lock body, wherein aportion of the force of the hit is guided onto the lateral structure 2A of the lock body asguided by the oblique surface 12 of the bolt and the corresponding oblique surface 13of the deadbolt piece. At the same time, a portion of the force of the hit pushes thedeadbolt piece against the support surface in the lateral structure of the lock body.Figs. 4 - 6 show such a situation, in which an external force has been directed to thebolt. The external force can thus be, for example, a hit directed to the end 3A of thebolt, a hit directed to the face plate 2C of the door lock and transmitted to the bolt 3,or a wire or slide pushed through the bolt opening of the face plate, which, at thesame time, pushes the bolt inside the lock body. lt can thus be stated that, in thisdescription, by an external force directed to the bolt is meant a force, which attemptsto shift the bolt inside the lock body due to a force directed to the bolt or the lock body2 or its face plate 2C, and thus, not a rotative force to be transmitted via the follower,which is normally used for opening the door. The face plate can be considered to be a part of the lock body. lt can also be stated that, in a solution according to the invention, the externalforce, which guides the bolt inside the lock body linearly parallel with the longitudinalaxis 5A of the bolt, is slightly rotated via the deadbolt piece towards the side of thelock body, i.e. towards the lateral structure of the lock body. ln addition, it should be 1G 2G 3G rnentioned that the ciearanoe 36 between the support surface 14 of the iock body 2and the corresponding support surface 15 of the deadboit piece 6 is removed due toan externa! force, but the ciearance 11 between the rotation surface 9 of the boit 3and the corresponding rotation surface 10 of the deadboit piece 6 remains, wherein the externai force is not transmitted from the deadboit piece 6 to the foiiower 4. in an embodiment according to the exampie of Figs. 1 - 11, the boit 3 comprises apin 16, the outer surface of which forms said rotation surface 9, and the deadboitpiece 6 comprises a groove 1'?, which (ie. the edge of the groove) forms saidcorresponding rotation surface 16. Fig. 12 shows another ernbodirnent 31 of the bott,in which the boit cornprises two pins 16A, 186, the outer surfaces of which form saidrotation surface Q, and the deadboit piece 6 cornprises a groove 17, which forms saidcorresponding rotation surface 16. Fig. 13 shows yet another embodintent 311 of theboit, in which the boit 3 comprises two openings 13A, 138, the edge surface of whichforms said rotation surface 9, and the deadboit piece 6 comprises two pins 26A, 2GB, which form said corresponding rotation surface 10. it can be noted that the bott and deadboit piece operate during an externa! force,such as a hit, such that both the bott and the deadboit piece shift rearwards, untii theboit hits with its corresponding support surface 15 against the support surface 14 ofthe side of the iock body. Between the rotation surface 9 of the boit and thecorresponding rotation surface 16 of the deadboit piece remains a ciearanoe, whichmeans that the externa! force directed to the bott does not rotate the deadboit pieceinto the open position (at the same time guiding the foiiower 4 to rotate), instead theexternai force is guided to rotate the deadboit piece away from the open position of the deadboit piece. in the embodiment of Figs. 1 - 9, the deadboit piece 6 oomprises a guide pin 21,the curved surface of which forms said corresponding guide surface 8, and thefoiiower 4 comprises a hoie 22, the edge surface of which forms said guide surface 7.Fig. 14 shows another embodiment of the deadboit piece 6, in which the deadboitpiece 6 comprises a hoie 23, the edge surface of which forms said correspondingguide surface 8, and the foiiower 4 comprises a guide pin 24, the curved edge of which forms said guide surface 7, There is no ciearance between the guide surface 7 and the corresponding guide surface 8, or it is smati so that, in terms of function, ithas no rea! significance, wherein it can be said that the guide surface and thecorresponding guide surface are against each other. in this description, by theexpression “against each other” is thus meant that there rnay be a smati ciearance bettveen the guide surface 17 and the corresponding guide surface 8.

The rear end BB of the boit 3 rnay cornprise one or two projections 3G paratiet withthe iongitudinai axis of the bott, to which proiections said rotation surface 9 isconnected, and the deadboit piece 3 is ptaced between the rotation surface Q and theobtioue surface 12 of the bott. The corresponding guide surface 8 and thecorresponding rotation surface 10 may aiso be piaced in the rear part dB of thedeadboit piece 6, and the corresponding obtique surface 13 can be ptaced in the frontpart 6A of the deadboit piece 6. The bott 3, 31, 311 may aiso have a protectiye piateprotection 32, which is used to attempt to prevent a wire or siide from being pushed into the iock body via the bott opening of the face piate 2G.

The corresponding obtigue surface 13 of the deadboit piece 6 may furthercomprise a stop protection 36, and the bott 3 may cornprise a stop surface 3D. Thestop protection and the stop surface are opposite each other, when the deadboitpiece ß is being rotated into the open position, Fig. 14 shows the stop projection 6G.From Fig. 14, it is aiso cieariy seen that the corresponding guide sunface 13 may aisohave a bend point 139, which promotes the rotation of the deadboit piece eithertowards the iaterai structure 2A of the iock body or towards the open position of thedeadbott piece. tt is aiso practice! for the deadboit piece to have a surface 6D, which,due to an externa! force directed to the bott, pressas against the iaterat structure 2Aof the took body.

The taterat structure 2A of the iock body may comprise an inwardiy-directedprojection 2D in the tock body, the edge of which protection forms said supportsurface 14. in the embodiment of Figs. 1 - 11, the foiiower 4 is spring-ioaded towardsthe first position by a spring 25, which is directiy connected to the foitower. Near the obiioue surface 12 of the boit may aiso be a reduction 29 to save on rnateriai. ti) 2G The took body may have, for exampte, a microswitch, with which the position of thefoitower 4 can be monitored. The connection between the microswitch and thefotiower can be made such that an externa! force, such as a hit to the bott or the iockbody, is not transmttted via the microswitch to the foiiower in order that it woutd rotate.

The invention effectivety prevents the infiuence of an externai force directed to thebott or the took body from being transmitted to the fotiower 4 in order that the foitowerwoutd rotate and, at the same time, wouid retease the deadbott by rotating thedeadbott piece ß into its open position. A soiution according to the inventionfurthermore guides the externa! force such that the deadbott piece remains betterlrnore tirmty in the iocking position nor is it abte to rotate into the open position. tt is ctear that the door took aiso coniprises other parts than just the above said.htonethetess, these are not shown in the figures for the sake of ctarity, wherein theinvention and its funotionattty can be ciearty presented. For exampte, from the tookbody 2 is shown onty a portion, wheretn it is seen the above-said parts ptaoed into thetook body. The skttted person in the art knows that, in Fig. i, a part corresponding tothe vistbte part of the iock body 2 woutd obscure, from the viewing direction of Fig. t,the parts ptaoed into the iock body. Atso the took cytinder and/or the eieotronic took arrangement are not seen in the figures.

A door iock according to the invention can be implemented in various manners, ascan be observed from the exarnptes described above. The invention is thus nottimited to onty the exampies presented above, rather it may be irnptemented in various manners within the scope of the independent ciaim.

Claims (11)

1G 2G Ctaims

1. A door tock (1), oomprising a took body (2), a bott (3) and a fottower (4), whichfotiower (4) is rotatabty arranged in retation to the handte spindte axis (5) and spring-ioaded towards the first position, in which the end (BA) of the bott (3), associated withit, is extended from the iock body (2), and which foiiower (4) is further arranged to puttthe end (BA) of the bott inside the took body (2), as the fotiower is rotated due to a rotative force directed onto the handte spindte axis (5), ~~~~~~~~~~~~~~ .Lack between the fotiowerfttššotstrri (4) and the boit (3) is a separate deadboit piece (6),which is arranged to move both in rotation to the bott (3) and in retation to thefotiowerftsš-tttsssr' (fi), which 'fottowerttitšïsistrtsr has a guide surface (f), and the deadbottpiece has a corresponding guide surface (6), which is against the guide surface (7) ofthe fotiowerfeittsser, and rjmthe bott (3) has a rotation surface (9) and the deadboit piece (6) has a corresponding rotation surface (16), between the rotation surface (9) and thecorresponding rotation surface (16) is a ctearance (1 t), as the end (3A) of the bott isextended from the took body (2) and the fottowet'fiitš»ttí=tt>tfsitfl (4) is in the first position, and tsitsittts~~deadbott piece (6) is arranged to shift towards the rotation surface (9) of the bott (3) costfštttsred to inte tft-tt asthe fotiower (4) is rotated due to a rotative force directed onto the handte spindte axis (5), wherein the ctearance (t 1) is removed, and the rotation surface (9) is against the “ corresponding rotation surface and, as the fottower is further rotated, the deadboit piece (6) being in the openposition, the deadboit piece (6) is arranged to shift tinearty parattet with theiongitudinat axis of the bott (3), at the same time shifting the end (3A) of the botttowards the took body, and which bott (3) further cornprises an obtioue surface (12), and the deadboitpiece (6) comprises a corresponding obiioue surface (13), which obtioue surface (12)is arranged to guide the externat force directed to the bott (3) onto the correspondingobiique surface (13), and, hence, via the deadboit piece (6), onto the iaterai structure(ZA) of the took body, and which iock body (2) comprises a support surface (14), and the deadbott piece(6) a corresponding support surface (15), which corresponding support surface (15) isarranged to shift against the support surface (14) due to an externai force directed tothe bott (3), thus preventing the end (3A) of the bott from shifting inside the iock body (2). \ .N wy' E 'pwflo f r,.< » _.\\ -.- p .-,\~.- »v .» ¿(_ . to piece(6) is arranged to rotate due to an externa! force directed to the bott (3), away fromthe open position of the deadbott piece (6). A door lock (1) according to ciaim characterized in that the bott (3)cornprises a pin (16), the outer surface of which forms said rotation surface (9), andthe deadbolt piece (6) comprises a groove (17), which forms said corresporidingrotation surface (16). A door took (1) according to claim characterized in that the bott (3)comprises two pins (18A, 188), the outer surfaces of which form said rotation surface(9), and the deadbolt piece (6) cornprises a groove (17), which forms saidccrresponding rotation surface (10). A door took (1) according to ciaim characterized in that the bolt (3)comprises two openings (19A, 198), the edge surface of which forms said rotationsurface (9), and the deadboit piece (6) cornprises two pins (ZOA, 2GB), which formsaid corresponding rotation surface (16). \ A door iock (1) according to any one of ctaims characterized in that ä the deadbolt piece (6) comprises a guide pin (21), the curved surface of which forms said corresponding guide surface (8), and the foiiower (4) comprises a hoie (22), theedge surface of which forms said guide surface (7). A :io-or took (t) according to erty one of ctašms characterriaed' in that EV the deadboit piece (6) cornprises a note (23), the edge surface of which forms said corresponding guide surface (8), and the foiiower (4) comprises a guide pin (24), thecurved edge of which forms said guide surface (7). A door lock (1) according to any one of ciairns - characterized in that the rear end (36) of the bolt (3) comprises one or two projections (BC) paraiiel with ”iQ 2G the iongitudinai axis of the bott, to which projections said rotation surface (9) isconnected, and the deaciboit piece (o) is piaced between the rotation surface (9) andthe obiique surface (12) of the bott. A door took (t) according to any one of ciaims characterized in thatthe corresponding guide surface (8) and the corresponding rotation surface (19) arepiaced into the rear part (GB) of the deadboit piece (6), and the corresponding obiiquesurface (13) is piaced into the front part (öA) of the deadboit piece (6). A door took (1) according to ciairn characterized in that thecorresponding obiigue surface (13) of the deadboit piece (6) ccmprises a stopprotection (GC), and the bott (3) contprises a stop surface (BD), which stop projectionand stop surface are opposite each other, the deadboii piece (6) being rotated intothe open position. s door rock (t) sccoirdiiig to any one of' ciainis characterized inthat the iaterai structure (2A) of the iock body contprises an inwardiy-directedprojection (20) in the iock body, the edge of which projection forms said supportsurface (14). A door iock (i) according to any one of ciaintis characterized inthat the foiiower (4) is spring-ioaded towards the first position by a spring (25), which is directiy connected to the foiiower.