EP0489236B1 - Lock in casing body - Google Patents

Abstract

Case lock (2), to be fastened so as to rest on a door, having a lock bolt (11) actuable by a lock cylinder and having a lock case (4) which interacts with the bolt and is to be fastened to the door frame (3) and to which is attached suspended a blocking stirrup (5) which can be swung out from the door plane and which has a longitudinally extending blocking slot closed all-round, through which, in the extended position of the bolt (11), the head (11'') of the latter, provided with blocking indentations (11'), is to pass transversely and engage behind. To improve and complete a case lock (2) of the generic type mentioned in the introduction, to the effect that it is even simpler in constructional terms and can also be produced more easily, but is also substantially easier to operate, it is so designed that there is provided on the lock case (4), laterally next to the blocking stirrup (5) and underneath its pivot bearing (16) and the path of movement of the bolt head, a blocking slide (13) which is transversely adjustable relative to the blocking stirrup (5) and which, in the suspended position of the blocking stirrup (5), projects laterally into the blocking slot of the latter and thereby blocks the blocking stirrup against swinging out, but which can be disengaged from this blocking position by an actuating knob (12) attached to it on the outside. <IMAGE>

Description

The invention relates to a door lock to be fastened with a lock cylinder-operated lock bolt and a cooperating, to be attached to the door frame lock box, on which a hinged out of the door locking bracket is attached, which has a longitudinal, all-round closed locking slot, which in the extended position of the Riegel from whose head is provided with cut-in cuts to penetrate transversely and reach behind.

Box locks of the above type are known for example from DE-GM 74 40 155 and DE-OS 37 21 670. The locking bracket, which can be folded out on the lock box, allows the door leaf to be locked in the gap opening position in connection with the extended lock bolt reaching into its locking slot so that the apartment owner in question can recognize and speak to the person standing outside the door, the latter However, there is still no possibility of unwanted intrusion or access to the apartment. To do this, the apartment owner would have to close the lock bolt by actuating the inside handle or occasionally an internal lock cylinder instead, so that the bolt head can move out of the locking slot of the locking bracket and thus release the door leaf for further opening. For the secure opening of the gap The door leaf is an essential prerequisite that the locking slot penetrated and engaged by its head in the extended position of the lock bolt is closed all around, so that the latter is also securely guided into intermediate positions of the only partially gap-opened door leaf and it does not result in the locking head being extended from the locking bracket Lock slot is coming. It is characteristic of the known box locks with locking clips of this type that they have lock bolts which can be extended consistently in two revolutions, the bolt head penetrating the locking bolt locking slot in the most extended position of the lock bolt, but behind it engages in a lock opening provided in the lock box and thereby the door properly keeps locked while the intermediate extended position of the lock bolt is used to secure the gap opening of the door leaf, in which case the bolt head which is then pre-engaged only grips behind the locking bracket. The two-turn lock bolt adjustment option required for this is disadvantageous in several respects. It not only requires a greater structural and manufacturing effort when manufacturing the box lock, but is also not necessarily user-friendly. Thus, both the inside and outside users of the door equipped with such a box lock must differentiate between the two locking positions, for which purpose a special status display is usually necessary on the inside of the door. Also, after each door wing is fully open, the lock bolt must be extended to its intermediate position if one wants to have guaranteed the gap opening position of the wing, but this can be forgotten.

A two-stage extendable lock bolt and thus also the aforementioned shortcomings also requires the case lock known from DE-AS 619 374, which also has the generic features mentioned at the outset, with the sole exception that the fold-out locking bracket is not attached to the lock case in a hanging but rather upright manner and is to be temporarily held in this position by a spring engaging on its hinged hinge pin, which requires a corresponding additional outlay and for each Closing the door after its previous gap opening requires the special folding of the locking bracket by hand. To avoid inadvertently opening the door from the inside of this case lock, the lock bolt can initially only be inserted into its central gap opening position, i.e. still in engagement with the locking shackle, using the turning handle provided on the inside, since the turning handle is attached to the lock case by a special locking device complete retraction of the lap bar is prevented. Before that, the above-mentioned locking device must first be switched off by an additional control button on the lock case. In order to be able to hold the spring bolt in its fully or partially retracted position, a further locking device is provided in the lock case in the form of two correspondingly arranged pawls, which are actuated by a push button arranged on the lock case side, which in the door closing position by a Existing protrusion on the locking bracket can be pressed in, except for holding engagement with the lock bolt. All of this is structurally very complex.

The invention has for its object to improve and perfect a box lock of the type mentioned in such a way that it is structurally simpler and easier to manufacture, but is also still much more user-friendly.

This object is achieved on the basis of a box lock of the type in question according to the invention in that on the lock box laterally next to the locking bracket and below of its folding bearing and the bolt head movement path, a locking slide which is adjustable transversely to the locking bracket is provided, which projects laterally into the locking slot in the hanging position of the locking bracket and thereby blocks the locking bracket from folding out, but can be disengaged from this blocking position by an actuating button attached to it on the outside. For this purpose, the locking slide advantageously has a blocking end provided with a bevel on one side and is under the action of a spring which seeks to push it into the blocking position.

Such a box lock is of a comparatively simple nature, since it only requires a lock bolt which can only be extended in one direction and a tumbler which locks it either in the retracted or extended position. In the extended position of the lock bolt, it engages with its head behind the locking bracket, which is in its usual hanging position but is blocked by the inserted locking slide, as a result of which the door is properly locked. For any gap opening of the door, for example when a stranger requests entry, the inside of the door only needs to be disengaged from its blocking position by operating the actuating button, as a result of which the locking bracket is released and, when the door is opened, is folded out by the attacking lock bolt. It is essential that the door leaf remains secured not only in its gap opening position but also in all its intermediate positions due to the constant engagement position between the locking bracket and the lock bolt head. The trap-like, one-sided bevel of the blocking end of the locking slide ensures that when the door is closed from the gap opening position, the pivoting locking bracket automatically reaches its blocked hanging position on the lock case. The user-friendliness of the new case lock also manifests itself in the fact that the person wishing to pass through the door from the outside only needs to differentiate between a single locked position and the release position of the lock when the outer lock cylinder is actuated, i.e. unlock the door with a single turn of the key in any case can

At this point it should be noted that it is already known in box locks with a fold-out locking bracket from DE-OS 22 19 267 to block the locking bracket in its normal, hanging position on the lock case by a spring-loaded, disengageable pawl, so that the locking bracket in this position, the door leaf is properly locked and therefore only a one-way extendable lock bolt is required for fully or partially opened locking of the door. In this known box lock, the pawl resiliently mounted on its bottom below the locking bracket engages through the locking bracket, which therefore, in order to be able to be folded down from the disengaged pawl, requires a locking slot which is open downwards over a wide range. It is therefore possible with this box lock construction during the gap opening or closing movement of the wing that the locking bracket can be lifted off the extended lock bolt head and the door can nevertheless be opened completely. This is possible even in the gap opening position of the door, because the door only needs to be pivoted inward a small amount to unintentionally lift out the locking bracket, so that the extended locking head can be lifted off the locking hook located on the underside of the free end of the locking bracket. In this case lock there is on the lock box on the side next to the locking bracket and underneath its folding bearing there is also an adjustable slide to the locking bracket, which is under the action of a spring, which also allows its slanted end in the hanging position of the locking bracket to protrude laterally into the locking slot. However, this is only an indicator pen for marking the pre-closed locking position and not a locking slide in the sense of the present invention.

According to a further feature of the invention, the lock box advantageously consists of a die-cast piece, which has a top part which is essentially U-shaped in plan view with bearing bores in its U-legs for receiving the hinged hinge pin of the locking bracket on the one hand and the locking slide on the other hand and one-sided to this has protruding bottom part protruding toward the locking bracket, in which There are screw fastening holes in the lock box, which are to be covered by the locking bracket above. In this way, the fastening screws of the lock case are only accessible in the open position of the case lock, in which the locking bracket can be folded down. A multi-part construction of the lock box can therefore also be dispensed with.

The two bearing bores in the lock case are advantageously identical for the optional installation of the hinged hinge pin of the locking slide necessary for its right-left use.

Furthermore, it is particularly advantageous if the locking of the case lock is provided with two engagement points which are spaced one behind the other in the direction of adjustment of the bolt for the selective engagement of the driving cam of a crank plate, which is located on the inside of an inner lock cylinder attached to the inside of the door or one in the extension direction of the Riegel's offset rotary handle is attached. The offset attachment of the twist grip compared to the normal backset distance of the outer lock cylinder is advantageous because the twist grip can be kept larger in diameter and is therefore easier to use. If an inner lock cylinder is used instead of the rotary handle, it is arranged coaxially with the outer lock cylinder. For the optional installation of an inner lock cylinder or a rotary handle, the case lock advantageously has a housing, in particular made of die cast, with an essentially 8-shaped contoured receiving opening therein for the axially offset installation of the inner cylinder or the rotary handle, the circular rotary handle receiving area of which is for one Inner cylinder built-in breakout bar is limited.

Further features of the invention are the subject of further dependent claims.

Fig.1

die Draufsicht auf einen mit dem neuen Kastenschloß versehenen Türbereich,

Fig.2

eine teilweise geschnittene Unteransicht dieses Türbereichs,

Fig.3

eine teilweise geschnittene Oberansicht dieses Bereichs bei spaltgeöffnetem Flügel,

Fig.4

den Sperrbügel in der Seitenansicht,

Fig.5

eine Draufsicht auf den Schließkasten,

Fig.6,7 und 8

jeweils Schnitte nach den Linien VI-VI bzw. VII-VII und VIII-VIII der Fig.5,

Fig.9

das Schloßkasten-Gehäuse in der Innenansicht,

Fig.10

einen Schnitt nach der Linie X-X der Fig.9,

Fig.11 und 12

Innenansichten eines mit einem innenseitigen Drehgriff ausgerüsteten Kastenschlosses in der ein- bzw. ausgefahrenen Stellung des Schloßriegels,

Fig.13 und 14

die entsprechenden Innenansichten des mit einem Innenschließzylinder ausgerüsteten Kastenschlosses.

In the drawing, advantageous embodiments of a box lock according to the invention are shown. Show

Fig. 1

the top view of a door area provided with the new box lock,

Fig. 2

a partially sectioned bottom view of this door area,

Fig. 3

a partially sectioned top view of this area with the sash open,

Fig. 4

the locking bracket in side view,

Fig. 5

a top view of the lock case,

Fig. 6, 7 and 8

sections according to lines VI-VI or VII-VII and VIII-VIII of Figure 5,

Fig. 9

the lock case housing from the inside,

Fig. 10

a section along the line XX of Figure 9,

Fig. 11 and 12

Interior views of a case lock equipped with an inside turning handle in the retracted or extended position of the lock bolt,

Fig. 13 and 14

the corresponding interior views of the case lock equipped with an interior locking cylinder.

The box lock shown in Fig. 1 to 3 in rough outline consists essentially of the lock case 2 to be fastened lying on the door leaf 1 and the lock box 4 to be attached to the fixed frame 3 with a locking bracket 5. The case lock 2 is from the outside of the door over the External lock cylinder 6 to operate, which is firmly connected via the fastening screws 7 with the support plate 8 'seated on the inside of the door 8' bottom plate 8 of the case lock, which can be operated inside the door by the rotary handle 10 mounted on the lock case 9. This rotary handle 10 is arranged axially offset with respect to the outer lock cylinder 6 in the direction of the lock bolt 11 to be excluded with one turn, as a result of which the rotary handle 10 has a comparatively large diameter without protruding laterally beyond the lock case housing 9 and can therefore be easily adjusted. The tip of the on the twist grip existing arrow shows the retracted or extended position of the bolt 11. If, instead of the rotary handle 10, as in the embodiment of FIGS. 13 and 14 to be described later, an inner lock cylinder is used, this is arranged coaxially with the outer lock cylinder 6.

The door bolt 1 can be held in the gap opening position shown in FIG. 3 by means of the lock bolt 11, which can only be adjusted from the outside as well as from the inside, and in connection with the locking bracket 5. However, it can also be held in its fully locked position according to FIG. 2 solely by the locking bracket 5 as long as it is held by a locking slide 13, which is accommodated in the lock case 4 and is provided with an actuating button 12, as described in more detail below, by the lock bolt 11 being extended in one direction Is blocked in the hanging position shown in Fig.1.

The locking bracket 5 has the design shown in Figure 4. It has an all-round closed locking slot 14 for the locking bolt 11 interacting therewith and the locking slide 13 likewise engaging therein, as well as a bearing eye 15 designed as an elongated hole, via which it is mounted in the locking box 4 with sufficient movement play or with pendulum motion.

The lock case 4 consists according to Figure 5 from a die-casting, which is a top view substantially U-shaped upper part 4 'with in its U-legs 4˝ lying bearing holes 16 and 17 and one to the upper part 4' on one side towards the locking bracket 5 projecting bottom part 4 ‴. In this projecting bottom part 4 mehrere, a plurality of screw fastening holes are provided for the fastening screws 18 and / or the heavy-duty dowel screw 19 that allow the locking box 4 to be attached to the fixed frame 3. As shown in FIG. 5 in particular, these fastening screws 18, 19 are covered or inaccessible in their hanging position by the locking bracket 5 provided on the lock case 4, so that the lock case 4 can only be unscrewed when the case lock is open, So retracted lock bolt 11 can be made.

The two bearing bores 16 and 17 present in the lock case 4 are of identical nature. They serve to accommodate the locking bracket 5 carrying folding hinge pin 20 and the locking bolt 13 belonging to the locking slide 13 '. Both bearing bores 16, 17 are narrowed on the side of the lock case 4 facing away from the locking bracket 5 by a ring shoulder 16 'and 17', respectively. These constrictions serve as abutments for the retaining screw 21 screwed into the hinged hinge pin 20 or for the actuating head screw 12 connected to the locking pin 13. As a result, the bearing hinge pin 20 and the locking slide 13 can be converted as desired for any right or left use of the lock case 4. The locking slide 13 also has a compression spring 22, which is supported on the one hand on the annular shoulder 17 'and on the other hand on the locking bolt 13' rearward and which therefore endeavors to lock the locking slide 13 with its locking bolt 13 'in the manner of a latch in the face shown in Fig .8 shown engaging position to hold the locking bracket 5.

The locking bracket 5 is held in its hanging position shown in FIGS. 1, 2 and 5 by the locking slide 13 and its locking pin 14 projecting into the closed locking slot 14 of the locking bracket 5 '. If therefore the lock bolt 11, whether it is extended by external or internal actuation of the box lock, the lock bolt head 11 'provided with upper and lower incisions 11' according to FIG. 1 engages behind the locking bracket 5 and therefore locks the door properly. This locking state can be recognized on the inside by the fact that the bolt head 11˝ is at its extreme end in the recess 23 located between the U-legs 4˝ of the lock case 4. In the same one-speed extended position of the lock bolt head 11˝ but the door can also be opened securely in columns. All that is needed is the actuation button 12 of the locking slide 13 and thus the locking bolt 13 'disengaged from the locking slot 14 of the locking bracket 5 to become. As a result, when the door leaf is opened, the locking bracket 5 can be flipped up by the locking bolt head 11˝ which also engages behind the locking slot 14 and can thus be brought securely into the securing gap opening position.

The lock case housing 9, as shown in FIGS. 9 and 10, has a bowl-shaped design. It is provided on the inside with guide webs 24 in the adjustment direction of the lock bolt 11 for the lock bolt and its tumbler 25 to be described in more detail below, and also with longitudinal webs 26 and transverse webs 27 located on both sides of the lock device. In the longitudinal webs 26, two locking openings 28 are provided for a locking cam 29 present on the tumbler 25, while in the cross webs 27 there are screw fastening holes 30 for the attachment of screws connecting the housing 9 to the base plate 8, which via the holes 31 in the lock case front wall are accessible. Furthermore, the housing 9 is provided with a circular indentation or bead 32, in which there are screw fastening holes 33 for the possible attachment of the inner locking cylinder 34 shown in broken lines in FIG. In the indentation 32 there is an essentially 8-shaped contoured receiving opening 35 for the axially offset installation of the inner cylinder 34 or the rotary handle 10, the circular receiving area 35 'for the rotary handle being limited by a bearing web 36 which is simple in the case of the inner cylinder attachment can be broken away. On the inside of the lock cylinder 34 or its core, which can be rotated for key actuation, the crank plate 37 shown in broken lines in FIG.

11 to 14, the lock set-up essentially consists only of the lock bolt 11 and the tumbler 25. The lock bolt 11 is formed in two parts. It consists of the locking shaft plate 11 ‴, which is guided in a longitudinally adjustable manner between the two longitudinal webs 26 of the lock case housing 9, and releasably on the longitudinal axis of the locking plate by screws 39 fastening bolt head 11˝ with the bolt cuts 11 'on top and bottom of it for its locking bar engagement and engagement. The longitudinally symmetrical design of the lock bolt 11 and the releasable fastening of the bolt head 11˝ to the bolt plate 11 ‴ also ensures a right-left use of the box lock here.

The tumbler 25 consists of a fork-like tumbler plate 40, which clasps the bolt shaft plate 11 ‴ at the rear and is slidably mounted on it via the slot-slot guides at right angles to the lock bolt movement. Between the locking plate 11 ‴ and the tumbler plate 40, the tumbler spring 41 is arranged, which is supported on the one hand on the latch plate projection 11 ^IV and on the other hand on the tumbler plate 40 provided with a corresponding inner recess near the bottom of its locking cam 29. As a result, the tumbler plate with its locking cam 29 is locked in one of the two locking openings 28 provided in the longitudinal web 26 of the lock case housing 9, depending on the retracted or extended position of the lock bolt.

On both sides of the fork-like tumbler plate 40, two engagement points 42, 43, one behind the other in the direction of adjustment of the bolt 11, are provided for the selective engagement of the driver cam 38 present on the crank plate 37 shown in FIG. In the embodiment shown in FIGS. 11 and 12, the box lock is provided with the rotary handle 10 which is offset in the direction of the lock bolt and on which the crank plate 37 is fastened on the inside by means of the screws 44. The driver cam 38 on it engages in the engagement point 43 of the tumbler plate, whereas the outer locking cylinder engages with its locking thumb in all cases in the engagement point 42 located on the front of the tumbler plate 40. In both cases, the lock bolt 11, as shown in FIGS. 11 and 12, can be conveniently included or excluded.

In the event that an inner lock cylinder 34 is used instead of the rotary handle 10, the one to be attached to the inside of the core of the lock cylinder can be shown in FIGS. 13 and 14 Crank plate with its driver cam 38 also engage in the engagement point 42 on the tumbler plate 40. In this case, too, a perfect one-turn bolt exclusion or inclusion is easily guaranteed.

Various modifications are possible within the scope of the present invention. For example, in the event that a locking bracket 5 is to be dispensed with, a shorter locking bar can also be permanently installed on the locking box 4 instead of the locking bracket 5, which at both ends is to be inserted into the two bearing bores 16 and 17 of the locking box - or fastening bolts, which may also be of the type of the bearing bolt 20, is attached. This also allows the door to be properly locked or locked if the secured opening gap is dispensed with, without further changes to the box lock having to be made.

Claims (14)

1. Case lock (2) for fitting to a door, comprising a locking cylinder actuatable lock bolt (11) and a latching case (4) cooperating therewith and attachable to the door frame (3), a curb yoke (5) mounted in suspended manner on the latching case to be pivotable out from the plane of the door, said yoke having a lengthwise extending, peripherally closed curb slot (14) which in the extended position of the bolt (11) has the bolt head (11˝) which is provided with latching notches (11′) penetrating transversely through the slot and latching behind it, characterised in that on the latching case (4) laterally adjacent to the curb yoke (5) and below its pivot bearing (16) as well as below the path of movement of the lock bolt there is provided a latching slider (13) which is displaceable transversely to the curb yoke (5), said latching slider projecting laterally into said curb slot (14) in the hanging position of the curb yoke (5) and thereby preventing the curb yoke (5) from pivoting outwards, but being retractable from this blocking position by operation of an actuating knob (12) which is mounted at the outside end of the slider.
2. Case lock according to claim 1, characterised in that the latching slider (13) has a latching end (13′) provided with a taper on one side and is biassed into the blocking position by a spring (22).
3. Case lock according to claim 2, characterised in that the latching case (4) is a pressure cast member which comprises an upper part (4′) which is substantially U-shaped in plan and has in its U-limbs (4˝) bearing holes (16, 17) to receive the swing bolt (20) of the curb yoke (5) on the one hand and to receive the latching slider (13) on the other hand, as well as a base part (4‴) projecting on one side towards the curb yoke (5), in which base part are provided screw fixing holes (18) of the latching case (4) which are screened by the curb yoke (5) which overlies them.
4. Case lock according to claim 3, characterised in that the two bearing holes (16, 17) in the latching case (4) are made identical for the selective fitting, necessary for its use as a right-hand or left-hand lock, of the swing bolt (20) and of the latching slider (13).
5. Case lock according to claim 4, characterised in that the two bearing holes (16, 17) in the latching case (4) are narrowed by an inturned annular shoulder (16′, 17′) at the end remote from the curb yoke (5), and the swing bolt (20) as well as the latching slider (13) are formed in two parts, namely a bearing and latching bolt (20 and 13′) which is in the unnarrowed bearing hole and a retaining or actuating screw (21 and 12) seated against the annular shoulder (16′ and 17′) and screwed into the other end of the swing bolt or slider respectively.
6. Case lock according to one of claims 1 to 5, characterised in that the curb yoke (5) includes a bearing eye (15) which is an oblong hole and which is separate from its closed curb slot (14) for receiving the swing bolt (20) which carries the yoke.
7. Case lock according to one of claims 1 to 6, characterised in that its lock bolt (11) is arranged to be extended by just a single turn and is provided with a tumbler (25) which blocks it in its retracted and extended positions.
8. Case lock according to claim 7, characterised in that the tumbler (25) is provided with two engagement zones (42, 43) for the selective engagement of the entraining cam (38) of a crank plate (37), the engagement zones being spaced one behind the other in the direction of displacement of the lock bolt (11), and wherein the crank plate is fixed to the inside of an internal locking cylinder (34) which is mounted on the inside of the door or is fixed to the inside of a rotatable grip (10) which is mounted offset in the direction of extension of the bolt (11).
9. Case lock according to claim 8, characterised in that it comprises a housing (9), particularly a pressure cast housing, with a substantially 8-shaped receiving hole (35) therein for the axially-offset fitting of the internal cylinder (34) or of the rotatable grip (10), wherein the circular grip-receiving region (35′) of the receiving hole is delimited by a bearing rib (36) which can be broken away for the fitting of the internal cylinder.
10. Case lock according to claim 9, characterised in that its housing (9) is of dish form and is provided on the inside with guide ribs (24) for the lock bolt (11) and with its tumbler (25) as well as with longitudinal and transverse ribs (26 and 27) on both sides of the lock mechanism, wherein in the longitudinal and transverse ribs are provided respective arresting holes (28) for an arresting cam (29) provided on the tumbler (25) and screw fixing holes (30) for the connection of the case housing (9) with the case base (8).
11. Case lock according to one of claims 1 to 10, characterised in that the lock bolt (11) is formed in two parts, namely a bolt stem plate (11‴) which is guided longitudinally in the housing (9) and the bolt head (11˝) which is releasably fixed to the stem plate and is arranged axially centered in relation to the bolt stem plate.
12. Case lock according to one of claims 1 to 11, characterised in that the tumbler (25) consists of a forked arcuate tumbler plate (40) which embraces the bolt stem plate (11‴) at the rear and is mounted on the said plate to be displaceable transversely to the direction of displacement of the lock bolt as well as being urged into its keeper position by means of a spring (41) which is mounted therebetween, wherein in the keeper position the cam (29) provided on the tumbler plate (40) engages in one of the two arresting holes (28) provided in the corresponding longitudinal rib (26) of the case housing (9).
13. Case lock according to claim 12, characterised in that the two engagement zones (42, 43) lying spaced one behind the other in the direction of displacement of the bolt (11) are provided for the selective engagement of the crank plate entraining cam (38) with the two sides of the tumbler plate (40).
14. Case lock according to one of claims 1 to 13, characterised in that on the latching case (4), instead of the curb yoke (5), there is mounted a shorter blocking member which at its two ends is arranged to be fixed by means of bearing and fixing bolts (e.g. 20) to be inserted into the two bearing holes (16, 17) of the latching case (4).

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