EP2388419B1 - Mortise lock - Google Patents

Description

The invention relates to a mortise lock with a lock case and a displaceable between a rest position and a locking latch, a locking cam having a lock cylinder, wherein the locking bar engages in locking the bolt provided in a locking bolt drive, and with a displaceable by means of Schließbarts tumbler, which when vorgeschlossenem bolt this secures in the locking position, with a designed as a pivotally mounted flap lock is provided, which engages in its locked position in the closing circle of the Schließbarts, so that in vorgeschlossenem bolt displacement of the tumbler is prevented.

Mortise locks are inserted into recesses provided for this purpose in the door leaf, wherein a lock cylinder, in particular a profile cylinder, is inserted transversely to the door leaf and mortise lock. Particularly slim mortise locks can be used as tubular frame locks in tubular frame door profiles. The so-called Hinterdornmaß, ie the measure behind the profile cylinder plays a major role as an important product feature. Due to the closing circle of the profile cylinder, this measure has established itself as Hinterdornmaß and should not be exceeded become. For relevant tubular frame locks this dimension is set to 15.5 mm.

An important feature of this tubular frame locks, despite its slim design yet achieve a large Ausschlussmaß the bolt to generate a large burglar resistance. This large Ausmaßmaß is realized at larger mandrel dimensions by the lock cylinder is actuated twice. For smaller spine dimensions, a translation, a so-called bolt drive, is used. With this locking mechanism, the bolt must be closed only once for a larger exclusion. However, there is now the possibility that the lock cylinder can be operated again with not removed key, resulting in that the tumbler of the lock, which secures the bolt in the vorgeschlossenen position, is raised. As a result, the backup of the bolt is repealed, that is, the bolt is unlocked and can now be inserted without resistance. This is always the case when the key is not removed from the profile cylinder.

From the FR 2 477 616 A a door lock according to the preamble of claim 1 is known. From the DE 197 50 966 A1 a lock is known in which the lock and the tumbler are formed as a single component. The lock is a slide, which is moved by means of the latch tail.

The invention is therefore based on the object to provide a mortise lock, which has a greater burglary security even when not removed key.

This object is achieved according to the invention in a mortise lock of the type mentioned by a mortise, having the features of claim 1.

When mortise lock according to the invention, the tumbler can not be lifted out of its securing position by pressing the profile cylinder in the closing direction at vorgeschlossenem bolt and in the profile cylinder stuck key, as this is prevented by a lock. So there is no danger that operated in the profile cylinder key stick the profile cylinder is operated differently than with the key and pressed back by manipulation from the outside of the bolt. Such a mortise lock according to the invention has a much higher burglary resistance than conventional mortise locks. The lock is designed as a pivotally mounted flap. In addition, the lock engages in its locked position in the closing circle of the Schließbarts. In this way, the movement of the lock bit is blocked, so that it is prevented from further movement.

A secure positioning of the lock in its locked position is inventively achieved in that the lock is held at vorgeschlossenem latch of the guard in its locked position. The tumbler thus not only blocks the bolt and prevents the bolt from being pushed back, but also keeps the lock in its locked position, thereby preventing the cam from lifting the guard.

In this case, the lock between a rest position and a locking position is displaced, in particular pivotable. Such barriers have the significant advantage that they are easy to prepare and easy to move. It only requires a simple control by means of a or more components to move the barrier from one to the other position.

Preferably, the barrier formed as a flap in one embodiment in the ceiling and / or in the bottom of the lock case is pivotally mounted. In order to limit the pivoting in a simple manner, the flap has at least one projecting parallel to the pivot axis pin which is guided in the ceiling and / or in the bottom of the lock box in a slot. The flap can therefore be moved from one stop to the other of the slot and takes it the rest position or the locked position.

Preferably, when the lock bit is adjacent to the lock, it forces the lock further into the locked position. In the manner of a self-locking the cam can not be further rotated in this direction.

In a further development of the invention, it is provided that the lock is held in the rest position when the bolt is retracted by the bolt or its locking drive. In this way, it is ensured that the cam, whose task is to precede the bolt, can certainly fulfill this task, since the lock occupies its rest position and therefore does not interfere with the closing circle of the cam.

The positioning of the lock in the lock case is chosen so that the lock is at a closing movement of the Schließbts between its rest position, in which the key can be inserted into the lock cylinder, and the tumbler. Thus, the cam covers from the rest position and a turn in Closing direction first on the lock and then on the tumbler when the lock is in its locked position. If the lock is in its rest position, it is outside the closing circle, and the cam can pass unhindered the lock. But then the bolt is in the closed position so that it can be preconnected.

Another advantage is seen in the fact that the lock is freely movable, that is, featherless, is stored. It is held by the bolt in its rest position and by the tumbler in its locked position. A spring support therefore requires the lock neither in one direction nor in the other direction.

Preferably, the lock is located at the back of the lock case, which is why it is outside of trajectories of other components and engages only in their locked position in the closing circle of the cam. In addition, it is optimally protected in this position against manipulation from the outside.

Further advantages, features and details emerge from the subclaims and the following description, in which a preferred embodiment is described in detail with reference to the drawing.

Figur 1

eine Draufsicht auf ein Einsteckschloss bei geöffnetem Schlosskasten und vorgeschlossenem Riegel und angehobener Zuhaltung;

Figur 2

die Ansicht gemäß Figur 1 bei vorgeschlossenem und mittels einer Zuhaltung gesichertem Riegel;

Figur 3

die Ansicht gemäß Figur 1 ohne Sperre;

Figur 4

die Ansicht gemäß Figur 3 mit Sperre;

Figur 5

eine Ansicht auf die Rückseite des Einsteckschlosses;

Figur 6

einen Schnitt VI - VI gemäß Figur 5 bei zurückgeschlossenem Riegel; und

Figur 7

eine vergrößerte Wiedergabe des Ausschnitts VII gemäß Figur 2 bei vorgeschlossenem Riegel.

In the drawing show:

FIG. 1

a plan view of a mortise lock with the lock case open and vorgeschlossenem latch and raised tumbler;

FIG. 2

the view according to FIG. 1 with pre-closed and secured by a locking latch;

FIG. 3

the view according to FIG. 1 without lock;

FIG. 4

the view according to FIG. 3 with lock;

FIG. 5

a view of the back of the mortise lock;

FIG. 6

a section VI - VI according to FIG. 5 with locked back latch; and

FIG. 7

an enlarged view of the section VII according to FIG. 2 with locked latch.

In the FIG. 1 an embodiment of a mortise lock 10 according to the invention is shown, wherein the ceiling is removed, so that the lock dishes in the lock box 12 can be seen. In particular, a locking cuff 14 by cross-fitting and vorgeschlossener latch 16 is shown, which has a latch drive 18, in which engages a cam 20 of a profile cylinder 22 designed as a lock cylinder 24. The latch 16 is preceded with a single revolution of the lock bit 20 counterclockwise to its maximum extension. Furthermore, a tumbler 26 can be seen, which has a lifting arm 28 at its lower end and via suitable guides in the vertical direction, that is orthogonal to the direction of movement of the bolt 16 in Lock case 12 is guided slidably. In FIG. 1 It can be seen that the lifting arm 28 is seated on the cam 20. In addition, the tumbler 26 is biased by a spring in the direction of the lock bit 20.

In the FIG. 2 the cam 20 is further rotated by an angular range of about 45 ° and has emerged from the latching drive 18. The spring-loaded tumbler 26 has followed the lock bit 20 and has dropped, with the lift arm 28 just touching the lock bit 20. At the upper end, the tumbler 26 has a shoulder 30, which now engages behind the latch 16 on its latch tail 32 and thereby secures the precluded position of the latch 16.

Would now like a conventional mortise the profile cylinder 22 is further rotated counter to the clockwise direction, then beats the cam 20 again on the lifting arm 28 and lifts the tumbler 26 from in the FIG. 2 shown position until the shoulder 30 is located above the bar tail 32. This position is in the FIG. 3 shown. The bolt 16 can now be pressed with a suitable tool from its pre-closed position in the lock case 12, since the tumbler 26 no longer secures the pre-closed position of the bolt 16. This is always possible with conventional mortise locks with bolt drive and one-speed exclusion, if after closing the bolt 16 it is forgotten to remove the key from the lock cylinder 24. The lock cylinder 24 can then be rotated from the side opposite the key, so that it in the FIG. 3 shown position occupies. The lock can then be broken from the outside by pushing back the bolt 16.

This is prevented by that, as in the FIG. 4 shown, it is prevented that the lock cylinder 24 can be rotated so far that the cam 20 comes into engagement with the tumbler 26, in particular the lifting arm 28. For this purpose, a lock 34 is provided in the mortise lock 10 according to the invention, which is designed as a flap 36 which is pivotally mounted on its upper side at a pivot axis 38. The pivot axis 38 is formed by an engaging in a bearing opening in the ceiling of the lock box 12 pin. The pivotable end 40 of the flap 36 has two pins 42, each in a slot 44 (FIG. FIG. 3 ) are guided in the bottom 46 and in the ceiling of the lock case 12 (see also FIG. 5 ).

The flap 36 is arranged so that it can assume two end positions, namely a rest position and a locking position, which in the FIG. 4 is shown. In the locked position, the pivotable end 40 of the flap 36 engages in the closing circle 48, the dashed line eg in the Figures 2 and 4 is shown, and prevents further rotation of the Schließbarts 20 counterclockwise direction, thereby preventing the cam 20 touches the lift arm 28 and thus the tumbler 26 of the in the FIG. 4 illustrated position lifts. The latch 16 is thus still secured by the shoulder 30, which is located behind the latch tail 32.

The FIG. 5 shows a view of the back of the mortise 10 and it is in particular the bolt drive 18 and the flap 36 can be seen. Also located in the view of FIG. 5 the latch 16 in its closed back into the lock case 12 position in which the latch drive 18 is a position occupies, in which it is at most the back of the mortise 10 approximated. In addition, it can be seen that the flap 36 has a bearing portion 50 with the pivot axis 38 and a locking portion 52 with the pin 42.

The FIG. 6 shows the section VI - VI according to FIG. 5 and it can be seen that the latching drive 18 abuts with the outside of its rear tooth 54 on the front side of the locking portion 52 and thereby holds the flap 36 outside the closing circle 48. In this position of the flap 36, the cam 20 can pass through the flap 36 and enter the latching drive 18. The latch 16 can thus be preconnected.

The FIG. 7 shows an enlarged view of the section VII according to FIG. 2 , wherein in this position of the locking drive 18 of the bolt 16 is vorgeschlossen. The rear end of the tooth 54 is therefore no longer on the locking portion 52 of the flap 36 at. In addition, the tumbler 26, as in FIG. 2 shown, lowered and the shoulder 30 is located behind the bolt tail 32. In this position, the tumbler 26 is a paragraph 56 at the top, next to the pivot axis 38 located and the back of the mortise 10 facing portion 58 of the flap 36 and pivots it in Clockwise direction about the pivot axis 38, so that the free, pivotable end 40 enters the closing circuit 48 of the Schließbarts 20. The flap 36 is held securely in the locked position by the latching position located in the locking position 32, the bolt tail 32 of the locked bolt 16 with the shoulder 30 engaging behind. This prevents that by repeated actuation of the lock cylinder 24 in Vorschließrichtung the tumbler 26 is lifted out of the locking 16 locking locking position.

The flap 36 is freely movable about the pivot axis 38 and is held only by the locking drive 18 in the rest position and by the tumbler 26, in particular paragraph 56, in the locked position and does not require any spring forces to take or ensure one or the other end position. Such mortise lock 10 provides a high security against burglary.

Claims (8)

1. A mortise lock (10) having a lock case (12) and a bolt (16) that is displaceable between a position of repose and a locking position; having a locking cylinder (24) with a key bit (20), wherein the key bit (20) upon prelocking of the bolt (16) engages a bolt drive (18) provided on the bolt (16); and having a tumbler (26), which is shiftable by means of the key bit (20) and which, when the bolt (16) is prelocked, secures the bolt in the locking position, and a bar (34) embodied as a pivotably supported lever (36) is provided, which in its blocking position engages the locking circle (48) of the key bit (20), so that when the bolt (16) is prelocked, shifting of the tumbler (26) is prevented, characterized in that the bar (34), when the bolt (16) is prelocked, is held in its blocking position by the tumbler (26).
2. The mortise lock of claim 1, characterized in that the lever (36) is supported pivotably in the top and/or the bottom (46) of the lock case (12).
3. The mortise lock of one of the foregoing claims, characterized in that the lever (36) has at least one peg (42), protruding parallel to the pivot axis (38), which peg is guided in an oblong slot (44) in the top and/or the bottom (46) of the lock case (12).
4. The mortise lock of one of the foregoing claims, characterized in that when the key bit (20) rests on the bar (34), the key bit forces the bar (34) farther into the blocking position.
5. The mortise lock of one of the foregoing claims, characterized in that the barr (34), when the bolt (16) is retracted, is held in the position of repose by the bolt (16) or its bolt drive.
6. The mortise lock of one of the foregoing claims, characterized in that the bar (34), upon a closing motion of the key bit (20), is located between the key bit position of repose and the tumbler (26).
7. The mortise lock of one of the foregoing claims, characterized in that the bar (34) is supported freely movably, that is, without a spring.
8. The mortise lock of one of the foregoing claims, characterized in that the bar (34) is located on the back side of the lock case (12).

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