IE852812L - Lock for a security grille - Google Patents

Description

S ■. I t u ~ 1 - The invention relates to an improved construction of sscurity grille for a closure such as a door, window, counter, bar-top or the like.

This invention is directed towards providing improved sscurity grilles.

According to the invention there is provided a security grille for a closure^the grille comprising a plurality ot elongate diagonally extending intersecting bars arranged in ths form of 10 a trellis for pivotal movement between adjacent bars on movement of the bars from a closure closed position covering the closure with the bars extended in an open-work lattice configuration to an open position uncovering the closure with the bars retracted, the grille having a track means in which 15 the b&rs are slidably movable, the track ms&ns including a movable track means which is movable as the grille is moved from the closure closed to the open position.

In one embodiment of tha invention the bars are movable from a position to one side, at the top or at the bottom of the closure, in use.

In one embodiment of this aspect of the invention the riser 5 is slidably mounted in & pair of fixed side support tracks.

In a particularly preferred embodiment of the invention the track means includes a lower support track and en upper riser track. Preferably the upper riser track wovas upwardly as th® grille is moved from the closed to the open position.

Typically the bars ere carried on a roller means which is slidably movable along the track staana on opening and closing of the grille.

Typically the pivot means comprises a rivet such as a semi-tubular rivet.

Preferably spacer means are provided between tha bars at the points of intersection.

In a preferred embodiment of this aspect of the invention one of the side support tracks defines a receiver for the grille.

Typically tha receives comprises a slot; provided ia tilse support track through which the extremity of at. .laeust on® of the bars extends in & position covering the closure number.

Irs ons ambodiiaent of tha invention locking sasens era providad for locking the grille in a closed position. Til® locking mecins mey be a keyless locking mechanism such as the mechanism which is tha subjact of the co-pending Irl3h Patent The invention will ba more clearly understood from tha following description thereof given by way of esaajpla osxly with reference to the eccompenying drawings in which: Fig. 1 is a front, partially sacsional visw of a sscurity grille, according to the invention in an open position.

Pig. 2 is a detailed view on en ®*»lasg®e scale of p02rci0:a of the locking mechaaisas illustrated is. Fig. 1.

Fig. 3 is a front, view of the grille in n locked position, Fig. 4 is c detailed vi®?*? on en enlergad scale of portion of ths locking xaachaninn.

Fig. 5 is a perspective viav of portion of the security grille in th® locked position, Fig. S is a front vievr of a detail of the grills, Fig. 7 is a perspective view of the detail of Fig. S on the line VII - VII in Fig. 5, Fig. 8 is a cross-sectional visw in the direction of the arrows viii - VIII in Fig. 5.

Fig. 9 is a cross-sectional view in ths direction of the arrows IX - IX in Fig. 5, Fig. 3.0 is a side view of the da tail X in Fig. 5, Fig. 11 is a perspective view of & security grill® according to the invention in c, closed position, Fig. 12 is a pesrspective view of a detail of the grille of Fig. 11 in the direction of the arrow 211, Fig. 13 is 6 perspective visw of the grill® at 5 ?ig. 11 in an open position, Pig. 14 is a perspective view of a detail of tha grille of Fig. 13 in the direction of tha arrows xrv, J?ig. 15 is an elevational view of another grille jlo according to tha invention in a closed position, Fig. 16 is an elevation&l visw of ths grill® of Fig. 15 in a partially open position, and Fig. 17 is an elevational view of a detail of tha grills of Figs. 15 amid 16.

Referring to the drawings and initially to Figs. 1 and to 10 thereof there is illustrated a security grille according to the invention indicated generally by the reference numeral 2. Th© security grille 2 is a grille for tha inside of a window 3 howewar, it will be 20 appreciated that th® grille may be uaacs for essy Miaitfsble closure including a door or indeed, for any opening.

The gri I la 2 comprises a plurality of diagonally arranged elongate intersecting toers <t which are movable from a closed position covering tha window with the bars ejstendsd in an opan-work lattice es illustrated in Fig. 1, 3 and 5 to an opsn position uncovering ths window with ths bars 4 retracted to one side of ths window 3. The bars 4 are int®rconn«Dct®d at their points of intersection by a pivot asans which in this case is in the form of e semi-tubular rivet 5 to parsait pivotal movement between adjacent bars 4. & plastic spacer washer 6 is provided on the rivet 5 to facilitate tree pivotal movement bstwaaa ths bass 4 on aoveaent betwsen the open and closed positions. The bars 4 ur© provided et their outermost points of intersection with rollar means which are slidably movable along a track means comprising a fixed lowssr support channel track 10, an upper riser support channel track !lf a fist ad side support channel track 12 and a movable sida support channel track 13 having an operating handle 14. the riser track 11 is aiountod on a pair of speced-apcrt side tracks, nasaely a fixed first side riser support channel track 15 and a second fixed riser support channel track 16. On movement of th® grill® 2 between th® opest end closed position th® rissr track 11 moves upwardly in th® channel-sh&p?3d tracks 15, IS.

Ths tears 4 ere provided at Sinair otsfcffinatost points of intersection with roll-ar ina&as in tha Corsa of Kollssa 31 which ara attached to the biirs 4 through seaii-tubular rivets 32. A plastic washer 33 is again providsd on the rivet 32 for ease of pivotal movement. The rollers 31 era slidably aiovabla along tha lower support; track 10, the upper riser support track 11, th® Jias®d side support track 12 and a movable aide support track 13.

It will tos notad that a&ch of tha tracks 10, .11, 12 and 13 each comprise en inwardly facing channel having two inwisrdly directed r®tums 34 over which th® rollers 70 run es illustrated in Figs .8,9 and 10.

Referring particularly to Figs. 5 and 9 the upper ritor track 11 is retained in position in the channel supports 15 and 16 by a retaining member 48 o£ angle section which is attached to the wah of tha channel 16. A rubber buffer 49 is attached to tha underside of ths retaining member 4i8.

By providing transverse support tracks 10, 11 tha tensile strength of the grille is greatly increased. The chasmel-shaped section of th® tracks 10, 11 is particularly advantageous in providing Increased tensile strength. tvro of the intersecting bars 4 of -the grills extend outwardly thsough corresponding elongate slots 20 in ths track l a. Ths «wcten<sion of the bars 4 define latches 21, 22 which engage in ths locked position illustrated in Fig. 5 in corresponding receiver slots 23, 24 in a receiver 25 which is attached to th© track IS by studs 25 which extend through locating slots 27 ia the receiver 25. The receiver 25 is slidably movable relative she track 16 by manual operation using a handle IB attached to the receiver 25. &hen th® slots 20 ia the track 15 (and the slots 23, 24 in the recoivmr 25 are aligned as illustrated in Fig. 5 on closing of the grille, tha lateh exteaaions 21, 22 of the bars 4 «r® pulled through she slots 20, 23, 24. ftos receiver 25 is then pulled downwardly in ths direction of ths arrow A by operating the handle 19 ao that the latch extensions 21, 22 of the bars 4 are locked ia th© recaivis&g slots 23, 24. For mors positive locking, each of ths latch extensions 21, 22 in this case includes a cut-out notch 28, 29 respectively which are engagahle by the upper well of the slots 23, 24 respectively in the locked position illustrated in Figs. 3 and 5.

The latch extensions 21, 22 and the receiver 25 fosss part of a locking jaechanissi whieh is th© subject of the Patent Application 3627030. Th® locking mechanism also includes an elongate extension leg 30 which extends downwardly from th® receiver 25, and ®xtands e,t its lowar and through a housing 33 which is typically at floor level end may ba attached to th® floor or skir'ciisg below a window on which th® grille is saous.tad. The extension lag 30 is conatreixvad against handle by a pair of guide lugs 36 attached to the wall hslov ths window.

Locking saeans for aagaging the extension lag 30 to lock the leg and hance the receiver 25 in the locked position illustrated in Figs. 3 and 5 is in this case providsd by a locking lav®r 40 having an enlarged bore 41 through which the leg 30 extends. The lever 40 ia retained in position by a retaining screw 42 which extends through a secosid enlarged bore 43 adjacent one asid of the lever 40. A self-locking nut 44 retains the lever 40 in position on the screw 42. When ths lev©r 40 is in the lowered position in which the axis of the boras 41, 43 are coaxial with the ajtis of the ssxtaasioa lag 30 and screw 4 2 respectively th® extension lag 30 is frsaiy movable in the bore 41 allowing the receiver 25 to be saoved upwardly so that the latch extensions 21, 22 o£ the beirs 4 are released and th® grille 2 may ba retracted. hsv&x bi&aaLng meaaa for urging the lsvsr 40 into th® nosnnally raised, locksd position, illustrated in Figs. 3 end. 4 Ira provided in this Cffl.se by a coll spring 45 which extends arousid tha esusisagion leg 30 - 10 ~ betweais ffl bottom wall 4.6 as the housing 35 csid th® laves <5 0. Extension leg biasaisig means foz urging zh® extension lag 30 and hence ths receiver 25 upwardly into ci released or unlocked position is in this caae provided by a coil spring 50 oxtending between an uppar vail 51 of the feouesing 35 and & weshar 52 fixed to the extension lag 30. & stop 53 fit the lowar end of the ©intension leg 30 engages with th® bottom wall 46 of th® housing 35 to limit th© saovaasnt of ths extension leg 30 and heacs th® receiver 23.

In uaer whan the grill© 2 is closed tha slots 20, 23 end 24 in th© track 16 fend receiver 25 are aligned in the unlocked position illustrated in Fig. 1. The l«tch extensions 21, 22 of the bars 4 than pass through tiles slots and the receiver 25 is pulled downwardly by operating the handle 19 until the latch extension 21, 22 of the bars 4 are locked in positioa. Daring this abase the levar 40 may h® pushed downwardly to allow the* extension lag 30 to be freely moved downwardly, as the extension lag 30 is saovad do?-?n, the lever release spring 45 ia compressed and when the latch extensions 21, 22 ere locked in the receiver slots 23, 24 the lever 40 is released so thr.t th® extension lag 30 is <sngaged in th® bore 41 of th© lever and prevented from acrving upwardly. To open tha grille ia tha case of an emergency ssuch ess a fire, no key is required, the lock being released by - 11 ~ pressing ths release lever ^0 downwardly which allows the extension leg 30 so circosnasiceily move upwardly iato tha rsleaae position us.der ths biaasing o£ the coil spring 45. In the unlocked position, ths grille saay be opened by pulling the sid© support track 13 by handle 14 end hsauce tha bars 4 through shft upper and lower support tracks 10, 11.

Referring to Figs. 11 to 14 there is illustrated a security grille also according to the invention assd indicated generally by the sreseraacs numeral 50 which in this case ia illustrated e grill® for the inside of a window 61 however, it will bo appreciated that tha grille any be used for any suitable closure including a door or indeed, for assy opening.

The grille 60 comprises a plurality of diagonally arranged elongate intersecting bars 63 which are iuovabls from a closed position covering the window SI with th® bars S3 extended in an open-work lattice as illustrated in Fig. 11 to en open positioa uncovering th® window 61 with the bars 63 retracted on one sida of ths window 61 in the positioa illustrated in Fig. 13. Ths bars S3 are interconnected at their points of intersection by a pivot moans which in this cess ia in the form of a asm-tubular rivet 54 to permit pivotal moimmrsnt. between adjacent bars S3. A plastic spacer washer lis provided on th® ri-vsat 54 to facilitate fras pivotal wovensant betu&on th® bars on aoveaaafe btrewson the opan assd closed positions as described above with referonce to figs. 6 cad 7.

As described &bo%*o with roioronce to Figs. 8 to 10 the bars S3 (fir® provided at their outenwat points of intaraaetion with rollar jneams in eh<b Jorsa of rollars which are attached to the bars 63 through aeoi-tubular rivers. A plastic washer is again provided on the rivat for ease of pivotal sjovessssnt. TOia rollers as® slidably movable along a -crack seans comprising a fixed lo^ar support track 73, an uppar riser stsppost track 74, a fixad aid® support track 75 and a aovoble side support track 76 having n handle 77. Tfea riser track 74 ia counted iis a pair of side tracks nean®ly a fixssd first aids support; riser track 79 and a ascend £lst<sd sida riser support track 78 which forms an extension of tha side support track 73. Osi saovessant of th© support track 76 bses49®» th® open and closed position th® riser track 74 bovub upwardly in tha chennol-shepud tracks 78, 79 in the direction of the arrow 3. Ths upper riser track 74 is retained in position in th* channel supports 78, 79 by c rotaiaing Member 80 of angle section „ A rubber buffer 81 is attached to QadarBida of tha retaining member 80.

Tha tracks 73, 74, 75 and 76 each comprise en inwardly facing cht.R3.al having two inwardly directed returns over which tha rollers run es descsibsd above with reference to Figs. 8 to 10.

Sech of tha support; tracks 73, 75, 78 isseluda screw receiving holes 85 in che aids webs thereof through which fixing screws are inserted for attaching the grille SO to a window surroussd. Th® fixing holsss 85 and the outwardly facing walls of tha channel 73, 75, 78 om filled with suitable plastics filler pieces.

It will be noted that the side track 76 ia forsasd with «ia elongate slot 90 through which the free end of one of the bars 63 projects and is received in a receiver form by an elongate slot 91 in the web of the side support riser track 78. In a closed position illustrated in Fig. 11 s bcr 63 fiKt©ndo through the slot 91 &ad is locked in position by a locking saachetniam such as that described above with reference to Figs. 1 to 6.

One advantage of the security grille according to the invention is that it is of relatively simple and ch®eip construction and can be easily installed and locked in a closed position, closing and opening such an the inside of a window. The grille can be easily operetad between the open and closed position and :ln us® is not aesthetically invasive. By providing transverse Kupposrt tracks 73, 74 ths tunaile strength of the grille is greatly increased. The cheuMl-slupcd section of tin tracks 73, 7« ia particularly advantageous is providing 5 increased tensile strength.

M&ay ■sssriationa pa the specific easbodiasist. o£ th® security grill* described above will be readily appreciated. In particular, it in envisaged that the bars say ba arranged ia any suitable trellis-like fossa lO to be collapjjibls frosa ea open to a closed positioa.

It will im appreciated that particularly for wide wisdom opaaiags ths grille may be ia two partis which are pushed inwerdly frasa opposite si Idas of the window opening to saest ia £s central locking positioa.

It is envisaged that the support tracks mid channels used in the grille according to the specific ambodinent of tha invention described ahova will typically b® of extruded aluminiusa or other suitable staterial.

It will further be appreciated that while tha invention 2o has b&en described with particular reference to a sscuriay grille for a siadow th® grille aay also be used for other closure swmbera ouch as a door or any opfsniag.

Aside from the quick raises® locking saechejaism described ebova with ref arsnca to Figs. I to 6 and which is she subject of ths Patent Application 8627030 the security grills saay include is.ny sui'cffi.bl® locking rasichemiss. For example, instead of a quick release mechanism th« bar or bars which extend through ths receiver aay include eyas through which a padlock auay be inserted to lock the grille in the locked position. Such en arrangement does not ha^s the particular edvantage of allowing tha gri 1 la to be opened quickly in th® e^ent of an emergency however, it is in affect a security device particularly es th® padlock is positioned t.o ona sida o£ -th® window and is difficult to access frosa the outside.

Referring to Figs. IS to .17 there is illustrated another security grille 100 according to ths invention. Ths grille is particularly adapted for use with high openings and comprises a lower grille 101 which is movable across the opening in fcfe-a direction o£ th® arrow R and an upper grille 102 which ia movable ia the direction of the arrow S as ths grille is wotted S»®tws®n the closed position illustrated in Fig. 15 and the open position illustrated in Fig. 16. Both grilles 101 fend 102 ar® of the same general construction an thos® described above with rsfaraac® to Pigs. J. to 14. Sa illustrated ia Fig. 17 in this case* an v>pj>©x ria*»r support track 105 of the lower grill® is fixed to a - IS - lowwr support track IDS o£ tlw wp»er grillft 102 arsd isi Mai« booh -cheeks 105, 106 risa as tho grillo is saov-ad Xnzo the opssi position. amy su.iteh.les locking aschcssisiss jsiseh as tho locking aeehanisas described above say ba used to lock the grille 100 in th® closed positioa.

Claims (13)

1. A security grille for a closure, the grille comprising a plurality of elongcte diagonally attending intersecting bar3 arranged in the form of a trellis for pivotal movaraant between 5 adjacent bars on movement of the bars from a closure closad position covering the closure with the bars systems ad iss an opan-work lattice configuration to an open position uncovering ths closure with the bars retracted, the grille having a track means in which the bars are slidably movable, the track means 10 including a movable track means which is movable as the grills is moved from the closure closed to the open position.

2. A grille as claimed in claim 1 wherein the bars are movable from an open position to one side, at ths top on: at the bottom of the closure in use..

IS 3. A grille as claimed in claim 1 wherein the movuble eirack maens is slidably mounted in a pair of fixed side supports.

4. A grille as claimed in claim 3 wherein the movable track means comprises an upper riser track which moves up^srdljf in the side supports as the grille is moved from the closed to 20 the open position.

5. A grille as claimed in claim 4 wherein the track means includes a lower support track. - 18 -

6. A grills as claimed In cay preceding claisa therein 'cha bars are carried on a roller saeesis which is slidably xao'/eble along the track irraens on opening end closing of tha grills.

7. A grille as claimed in eny preceding claim therein ths 5 bars are interconnected by a pivot meeas coiapriaiag n rivet.

8. A grille as claimed in claim 7 whsrein the rivet cosnprissa c ssai-tubular rivet.

9. A grills as claimed in claim 7 or 8 wherein spacer means ere provided between the bars at the points of intersection.

10 10. A grille ess claimed in any of claims 3 to 9 wherein one of the side supports defines a receiver for locking of the grille in the closure closed position.

11. A grille as claimed in claim 10 wherein the r®ceiver comprises a slot provided ia the support track through which 15 the extremity of at leesst one of the bars extends ia e closure closed position.

12. A grille as claimed ia any preceding cleija wherein locking me&na are provided for locking the grille ia the closure closed positioa. - 19 -

13. A grille substantially es hereinbefore dasetribari with jreocarence to tha accompanylag drawings. Dated this 11th day oi November 1986 CRUICKSHAKK 6 CO. Agents for the Applicants 1 Holies- street, Dublin 2.