EP1030018B1 - Door security check - Google Patents

Description

The invention relates to a door catch lock as an additional lock to a multi-bolt lock, with manual operation and with operation by, the multi-bolt lock with the help of a push rod, whereby a can be pushed in and out through a nut using a handle Door catch bolt in a swing-out side Door catch bracket can be pushed in to open the door to a gap width is.

With a large number of front doors of apartments are additional so-called door catchers are used for the lock. It acts it is usually short chains on the door frame, the ends of which be hung in brackets on the door before opening the door can. It is therefore possible to have the door secured to get in touch with someone outside the apartment and e.g. Take over letters. Instead of this attachable Chains are also door catch brackets as gap limiters known, which are rotatably mounted on the door frame and the pivoted over the widened head of a door-side bolt can be around the bolt at the gap opening of the Door. These well-known and well-proven door catchers have the disadvantage of being an authorized person e.g. e.g. a family member, from the outside also with the Key cannot enter and it is required that someone detaches or deactivates the door catcher from the inside. It It is therefore desirable in many cases that the door catcher can be deactivated by an authorized person from outside can.

In a further development of the known, replacing a door catcher chain Door catch bracket, it is known the door-side bolt, which snaps into the door catch bracket by means of a Train the lock mechanism to be retractable. With this device the door catcher is turned by turning one Handle activated on a gearbox. This process can also be done from the outside using a locking cylinder be performed.

In the course of the introduction of multi-bolt locks, which as a result the locking of an entrance door, for example three points of greater security, it became possible a separate door catch lock over the push rods Taxes. A version that has been known for many years a spring-loaded pawl directly on the push rod which Movement of the push rod goes up and down, this Movement to the gearbox only in one direction of the door catcher transmits. The spring-loaded jack lies flat on the outside on a housing cover of the door catch lock on. In their movement path lies a door catcher housing emerging peg that is towards the push rod is slidably mounted and the in the bracket retracting bolt retracts when the pin is moved becomes. The spring-loaded catch is used when locking the multi-bolt lock swung in against the force of a spring, without pushing the pin. With the opposite Movement of the push rod but when the multi-bolt lock is unlocked, then one end of the pawl abuts the cone and takes it with it. This causes the deactivation of the door catcher. So if from the authorized person from outside is unlocked, then the door catcher also becomes inoperative set. From the inside it must be noted that the Door catcher is inserted after unlocking to pull back the trap with the pusher or at most by means of the Key via the switch actuation the door catch function to have available.

A similar construction is known from DE 295 09 503 U1. In technical reversal, the spring shaft is a spring-loaded, insertable pin connected, the end face is chamfered like a roof. One moved with the push rod The backdrop protrudes into the movement path of the pin on the Bolt shaft. This backdrop features on a start page the sprung pin over an oblique control edge and on the other side in the opposite direction via a vertical standing on the direction of movement of the push rod Control edge. This should only be in one direction of movement the push rod causes a displacement of the pin become. When the multi-point lock is withdrawn, the Door catcher active. But if the multi-bolt lock is locked, then the backdrop pushes the bolt shaft back and deactivates the door catcher.

EP 0748 910 A2 relates to a multiple locking insert with door catcher, which can be opened from the inside of the door using a Handle can be activated and retracted using a push rod is. In the lock housing for the door catch latch a cam wheel is provided which is in one direction of movement the push rod engages the shaft of the door catch bolt and pull it back and in the other direction the push rod performs an idle stroke.

EP 0790 376 A2, which is a main lock, should also be mentioned with push rod and an additional lock in their function describes. By operating the main lock in the closed position becomes both the main lock bolt and also the additional lock bolt by means of a control link forcibly closed. With a first closing operation the main bolt is opened and a second one Actuation of the additional lock bolts. The latter withdraws from the door catcher and deactivates it. This task requires technical implementation according to EP 0790 376 A2 with a first locking finger, the a slide arranged on the locking bar in a first Stops. When unlocking the main lock the locking finger is withdrawn. The slide comes in the second locking position, in which the slide by one second locking finger is held. When locking the main lock the locking finger is withdrawn and gives the Slider free.

The invention relates to a door catch lock with manual operation as well as with push rod actuation through a multi-bolt lock out. In a first embodiment, a Deactivation of the door catch device by the authorized person be possible from the outside. Of course, from the inside at all times the door catch can be activated. The construction should be prepared for a second embodiment, which then ensures that the sequence of operations from the multi-bolt lock and door catcher for the function of the door catcher is irrelevant. This is achieved in that the Door catch latch by one and possibly a second one Series-connected latch in the spring-loaded extension position is lockable and that the push rod is a control surface to disengage the pawl one after the other unidirectional starting of the control surface on one Control lever or the like. Has for the latch or latch. In a first embodiment, it is expedient if the door catch bolt shaft has a driver, in whose movement path is a lever arm as a two-armed lever trained when manually pushing out the door catch latch pivotable against the force of a return spring Locking hook engages, the other lever arm when extended Door catch latch can be snapped behind a spring-loaded latch is and if the latch is a lever, in particular a rocker is associated with one end in the trajectory a control surface, for example a control nose, on that of the multi-bolt lock when the lock is actuated sliding push rod protrudes, the latch at Moving the push rod in one direction from Locking hook can be lifted and snaps in the opposite direction. The Door catch latch is kinematic with one lever arm of the two-armed locking hook connected and is spring-loaded. The other lever arm is in when the spring is tensioned the latch-like latch is engaged. When the pawl is lifted, then the locking hook snaps back and the door catch bolt runs with the spring relaxed back. The spring can act indirectly on the door catch latch, by attacking the pawl or directly communicate with the door catch bolt shaft. If the multi-bolt lock is locked, then the door catch lock activated by manual operation. When unlocking the door catch lock remains active. Will come from outside when attempting to open the door, the authorized party recognized that the Door catcher is inserted, then he must close the door. He locks and unlocks again. When locking the door catcher disabled. The door can be opened from the outside. It is therefore advisable here only after locking the Activate the inside of the door catcher. Would you be the door catcher insert and only then lock, then the door catcher deactivated again immediately. Of course, this happens when the door is locked immediately, so that in practice there are no operating errors comes. To avoid such and the order the operation is irrelevant to one Further development of the invention is expediently provided, that seen in the direction of rotation of the locking hook next to one Pawl a second spring-loaded pawl for engaging the Locking hook is provided that the rocker on both latches for the opposite actuation, the control surface of the rocker actuating the Push rod with every complete reversing movement cycle the push rod in accordance with an unlocking and locking of the multi-bolt lock each of the two latches one after the other lifts so that the locking hook when actuating the multi-bolt lock from the latching position of one latch into which the next pawl falls, which only renewed cycle of movement of the push rod the rotation of the locking hook under the restoring force and retraction of the door catch latch releases. At the first lock cycle, no matter whether it is locked first or the door catch activated first the locking hook jumps in from the second locking position the first. Then the second lock cycle in the course of Lock the door catch open. Every other locking cycle thus enables the door catch to be deactivated. If so locked from the inside and the door catcher inserted, then jumps when unlocking the multi-bolt lock (e.g. from the outside) the locking hook from the second to the first latch. When the door is subsequently locked from the outside, the first latch comes disengaged with the locking hook and the spring pulls the door catch latch back. The door catcher is free. Well now the multi-bolt lock that has been locked for this purpose is still unlocked, to be able to open the door.

Furthermore, by manual operation over the handle and the nut of the door catch bolt at any time - i.e. from the open and closed position and with an open and locked multi-bolt lock - can be advanced and retracted. Since the latched locking hook with its lever arm on the bolt side This prevents a notch when the bolt is actuated respectively. This is achieved in that the latch or the latches each on a cross to the door catch bolt plate provided against spring force are, each with a control edge in the turning range the nut as well as in a tooth gap of the door catch bolt shaft protrude into which the nut for the door catch bolt actuation engages and that the plate or plates as Tumblers for the door catch bolt when the nut is turned extractable interlocking connections between the or the Plates and the door catcher shaft are formed. The Tumblers also prevent the bolt from being violent from the outside is pushed back. In itself, that's why impossible because the door catch bracket the bolt head in one Grooves over like a fork and counteracts pushing back. It is useful if as positive connections Projections are provided on the plate that are perpendicular to the Direction of movement of the door catch bolt together with the Plates are slidable when lifting the plates through the nut from the displacement path of restricted areas the door catch bolt shaft can be raised against spring force.

The release of the latch or the alternate release of the two latches takes place via the rocker, whose cantilevered lever arm in the displacement area of the control nose the push rod protrudes. To the seesaw in the scales too it is advisable to hold the rocker with a spring, facing the seesaw in a neutral equilibrium position who holds the latches.

Embodiments of the door catcher lock according to the invention are shown in the drawings, Fig. 1 shows a door catch lock in a first design when removed Castle ceiling in basic position, Fig. 2 in the through a handle activated position, Fig. 3 when locking one controlling the door catcher via a push rod Multi-bolt lock, Fig. 4 the door catch lock in locked state of the controlling multi-bolt lock, Fig. 5 shows the door catcher lock when unlocking the controlling Multi-bolt lock, Fig. 6 in the unlocked position of the Multi-bolt lock, Fig. 7 when locking the Multi-bolt lock, Fig. 8 in the locked for the second time Multi-bolt lock and Fig. 9 a door catch lock in a second, simplified design again in Initial position. A door catch lock according to Fig. 1 or Fig. 9 replaces the well-known for opening a door Chain that is hooked in when needed and after closing the door can be unhooked again to admit a visitor. This door catch lock is an additional lock for one Multi-bolt lock (not shown) provided, the Push rod 1 along the housing 2 of the door catch lock the faceplate penetrates. The door catch lock can be from Hand can be confirmed by a handle over a nut 3 by means of a toothing with an extension of the nut 3 and a tooth gap 4 in a door catch bolt shaft 5 the latter - and thus the door catch bolt 6 - pushes out or moves in. The door catch bolt 6 is hammer head-like with one Groove formed and engages when pushed out (Fig. 2) in a swing-out side, in one Striker mounted door catch bracket (not shown) a, the latter an opening angle when opening the door limited, which cannot be exceeded.

In the housing 2 is above the door catch bolt shaft 5 a two-armed locking hook that can be rotated around a housing-fixed axis 7 arranged, the lower end of the lever in a recess of the door catch bolt shaft 5, which has the function of a driver 8, engages. A spring 9 holds the locking hook 7 in the basic position and thus the door catch bolt 6 in the retracted position.

When using the handle, nut 3 and toothing the door catch bolt 6 pushed out and the door catcher is activated, then the locking hook 7 moves clockwise and the Spring 9 is tensioned (Fig. 2). So that the door catch bolt 6 does not return to the starting position when you release the handle 1 jumps back, is according to 9 is a latch 10 or are according to FIGS. 1 to 8 Two latches 11, 12 are provided, which the locking hook 7 in keep the tensioned state.

1 to 8 with two latches 11, 12. 2 is the locking hook 7th with a clockwise rotation caused by the nut 3 over the locking pawl 11 into the locking pawl 12 engaged. A rocker 13 with a pivot point 14 between the two latches 11, 12, which are connected by a (not shown) Spring in the balance (Fig. 1, Fig. 2) are held can, is based on both sides of their pivot point 14 a pawl 11 or 12 from. The rocker 13 is on one End extended to an arm, the end of which is in the trajectory a control lug 15 on the push rod 1 of the multi-bolt lock lies. By moving the push rod 1 to At the top, the control nose 15 briefly lifts the arm so that the Rocker 13 lifts the pawl 11 and lowers the pawl 12. If the push rod 1 is then moved down again, then the rocker 13 lifts the latch 12 and lowers it from the pawl 11 at the same time. Basically, this will sent forward, because the one described below builds on this Function on.

So if, starting from the basic position shown in FIG. 1, in the open the multi-bolt lock, the push rod 1 with the Control nose 15 in the lower position and the door catch bolt 6 is still drawn in, the latter by turning the handle is pushed out against the force of the spring 9 (Fig. 2), then the locking hook 7 clicks over the locking pawl 11 into the Latch 12 a. The door is unlocked and can be inside to be opened to the width of the gap. The inside of the door a handle on the multi-bolt lock and a rotating one Handle on the door catch lock and outside only on one rigid handle at the level of the multi-bolt lock, which by both sides by means of a locking cylinder and the associated one Flat key is actuated.

If now the mostly installed below the door catch lock Multi-bolt lock e.g. is blocked from the inside, then this pushes on to actuate further bolts the door provided push rod 1 upwards and the control nose 15 slides over the arm of the rocker 13 (Fig. 3). The pawl 11 is raised. This has no effect on the Locking hook 7. Also the simultaneous lowering of the latch 12 is meaningless because these are on the pawl anyway is snapped on.

Fig. 4 shows the situation at the end of the locking. Like in front of the door catcher is activated and the door by the multi-bolt lock locked.

When unlocking the multi-bolt lock - for example when the doorbell rings - the control nose 15 moves with the Push rod 1 from top to bottom and takes the arm of the seesaw 13 for a short time, as shown in Fig. 5. Thereby the rocker 13 lifts the latch 12 and the locking hook 7 jumps onto the latch 11 and the locking hook 7 jumps to the latch 11. Fig. 6 shows this state. The door catcher is still active, but it is Multi-bolt lock unlocked. The door can be slit wide be opened. For example, a letter with a secure door be taken over. If you want to let a visitor in, then you close the door and turn the handle and thus the Nut 3, with its extension in the tooth space 4 two plates 16, 17 lifts, each on the plates 16 and 17, respectively one of the latches 11, 12 is arranged. The latches 11, 12 are thus also lifted up and from Locking hook 7 lifted off. The locking hook 7 snaps in any case off, so that the spring 9 comes into effect and the locking hook 7 and the door catch bolt 6 in the basic position (Fig. 1) withdraws. The door catcher is deactivated and the door can be opened. Whenever the handle with the nut 3 is actuated, the locking hook 7 falls into the basic position back, provided it engages in pawl 12 or 11 was.

The plates 16, 17 have an additional function. they wear at least one tumbler each, such as a nose in the recesses of the door catch bolt shaft 5 can intervene positively. This will make the Door catch bolt 6 additionally fixed in every position and can, for example, by external force on the The bolt head cannot be pushed back. This tumbler function is known per se and not in the drawings shown.

The invention, as shown in the figures, solves the task of granting access to the person authorized to enter, even when blocked Multi-bolt lock and activated door catch with the key to allow entry. Namely, a second lock cycle connected to that shown in FIGS. 1 to 6, then the locking lug 15 lifts the rocker 13 again, which now has the consequence that the locking hook 7 of the Latch 11 is released and with the release of the spring force 9 swings into the starting position (basic position). there he takes the door catch bolt 6 in the inserted position With. The door catcher is therefore deactivated. This new one The key can be locked by the authorized person respectively. He's through in the second lock cycle locking the multi-bolt lock again from the outside Door catcher deactivated (Fig. 8) and now only has to unlock the multi-bolt lock to actually enter can.

So if the door is locked and the door catcher is activated and an authorized person wants to enter without ringing, then he locks the multi-bolt lock from the outside (Fig. 5, 6) and notes that the door can only be opened to the width of the gap. He closes the door again, locks the multi-bolt lock (Fig. 7, 8), with which the door catch comes out of function and unlocks again to be able to enter now.

In the exemplary embodiment it is assumed that moving the push rod 1 upwards when locking the multi-bolt lock and moving the push rod 1 after at the bottom when unlocking the multi-bolt lock. In technical reversal can reverse the direction of movement his. To the described function of the rocker 13 operated Latches 11, 12 in the opposite direction of displacement The rocker can reach the push rod 1 equally 13 on the pawls 11, 12 attack from above to the in to effect the functions shown in the figures.

Fig. 9 shows a simplified embodiment with only one Latch 10. The effect of overcoming the door catcher from the outside by the beneficiary occurs when the Multi-bolt lock locked first and then the door catcher is inserted. When unlocked, the door catch remains in function, because according to FIG. 9 the control lug 15 the rocker 13 so twisted that the latch 10 latches with the locking hook 7 remains because it is lowered but not raised. The door can thus be opened to the width of the gap. If the Authorized to close the door from the outside and lock it again, then control nose 15 and rocker 13 cause lifting the latch 10 and thus a release of the locking hook 7, so that the door catch bolt 6 is drawn in. The door catcher is released, but the multi-bolt lock is blocked. It just have to be unlocked to enter.

In contrast to the embodiment according to FIGS. 1 to 8 it is necessary here when activating the door catch from to lock the multi-bolt lock on the inside - if available blocking of which is desired at all, because each blocking resets a previously activated door catcher. This is in the wrong order of operations of course, immediately visible, because the handle of the Turns door catch lock back. This immediately signals that the handle has to be operated again. Still is the embodiment of Fig. 1 to Fig. 8 advantageous because here the sequence of actuation of the multi-bolt lock and the door catch lock (or its handle) none Role play.

Claims (6)

1. Door catcher closure as an additional closure for a multi-bolt lock, with manual operation and with operation by the multi-bolt lock by means of a push rod (1), wherein the door catcher bolt (6), which can be slid in and out by a nut (3) by means of a handle, can be slid into a door catcher stirrup capable of being pivoted out on the floor side, for opening the door ajar, characterised in that the door catcher bolt (6) can be latched in the spring-loaded out position by one and if occasion arises a second series-connected catch (10; 11, 12) and in that the push rod (1) comprises a control surface (15) for unlatching the catch (10) or catches (11, 12) successively at each unilateral approach of the control surface (15) towards a control lever or the like (13) for the catch (10) or catches (11, 12).
2. Door catcher closure according to claim 1, characterised in that the door catcher bolt shaft (5) comprises a driver in whose path of movement engages a lever arm of a locking hook (7) which is designed as a two-armed lever and is pivotable against the force of a return spring (9) when the door catcher bolt (6) is slid out manually and whose other lever arm is latchable behind a sprung catch (10) when the door catcher bolt (6) is slid out, and in that associated with the catch (10) is a lever, in particular a rocker (13), which extends with one end into the path of movement of the control surface, for example a control lug (15), on the push rod (1) which is slidable by the multi-bolt lock upon lock operation, wherein the catch (10) is liftable off the locking hook (7) upon sliding the push rod (1) in one direction of sliding and latches in the opposite direction.
3. Door catcher closure according to claim 2, characterised in that next to one catch (11), seen in the direction of rotation of the locking hook (7), is provided a second sprung catch (12) for latching of the locking hook (7), in that the rocker (13) abuts against both catches (11, 12) for respectively mutually opposed operation, wherein the control surface of the push rod (1) which operates the rocker (13) successively lifts each of the two catches (11, 12) at each complete reversing cycle of movement of the push rod (1) corresponding to unlocking and locking of the multi-bolt lock, so that upon multi-bolt lock operation the locking hook (7) drops from the latch position of one catch (12) into that of the next catch (11) which does not release rotation of the locking hook (7) under the return force of the return spring (9) and retraction of the door catcher bolt (6) until the following, new cycle of movement of the push rod (1).
4. Door catcher closure according to one of claims 1 to 3, characterised in that the catch (10) or catches (11, 12) are provided in each case on a plate (16, 17) which is slidable against spring force transversely to the door catcher bolt (6) and which in each case extends with a control edge into the region of rotation of the nut (3) or of an extension thereof as well as into a tooth gap (4) of the door catcher bolt shaft (5) in which engages the nut (3) or the extension for door catcher bolt operation, and in that the plate (16) or plates (15, 17) are designed as tumblers for the door catcher bolt (6) with form-locking connections between the plate or plates (16, 17) and the door catcher bolt shaft (5) which can be undone upon rotation of the nut (3).
5. Door catcher closure according to claim 4, characterised in that as the form-locking connection there are provided projections on the plate (16, 17) which are slidable together with the plate or plates (16, 17) perpendicularly to the direction of sliding of the door catcher bolt (6) and which, upon lifting of the plate (15) or plates (16, 17) by the nut (3), are liftable against spring force out of the path of sliding of locking faces on the door catcher bolt shaft (5).
6. Door catcher closure according to claim 2 or 3, characterised in that the rocker (13) comprises a spring which keeps the rocker (13) in a neutral position of equilibrium relative to the catch or catches (11, 12).

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