DE9321038U1 - Self-locking security door lock - Google Patents

Description

Krachten, Theodor, Horstmarer-Landweg 101, 48149 Münster

"Self-locking security door lock"

The innovation relates to a self-locking security door lock according to the preamble of claim 1.

Such a lock is known, for example, from DE-39 40 393 Al.

The known security lock includes a separate, designed locking mechanism that is separate from the locking element. While it functions well, this makes the known lock relatively complex in terms of its manufacture.

Furthermore, the locking device in the known lock only has locking pawls, which are arranged above the upper bolt and below the lower bolt. For optimum security, it may be desirable to design such a lock as a bar bolt lock. The known locking pawls are a hindrance or can only be arranged at the upper and lower ends of such a bar bolt lock. In order to ensure the most reliable function possible, however, it may be desirable to provide several locking pawls in the middle area of such a lock, given the overall length of a bar bolt lock of approx. 1.80 m.

Furthermore, from DE-39 38 655 a non-standard electromechanical door lock is known, which

As a security feature, it also allows a large bolt stroke, which can correspond to a bolt stroke that is possible with a two-turn lock operation. The disadvantage of this non-standard lock is that it requires electrical energy to function.

Finally, FR-PS 2 451 437 discloses a deadbolt lock in which no automatic actuation of the bolts is provided.

The innovation is based on the task of improving a generic lock so that it can be designed as a bar lock with as little construction effort as possible.

This problem underlying the innovation is solved by the design according to the characterizing part of claim 1.

In other words, the innovation proposes using pawls in the locking device that do not act directly on the bolts, but rather on the gear element, which in turn is connected to the bolts. In this way, the bolts are indirectly locked by the locking device. Such arrangements of pawls enable the problem-free design of a gear element with the length required for a deadbolt lock. The formation of a tumbler in the gear element itself reduces the construction effort and enables a deadbolt lock that is both inexpensive and space-saving.

Further advantageous embodiments are apparent from the subclaims.

The innovation is explained in more detail below using the drawings.

Fig. 1 is a schematic side view of the lock with the lock case cover removed, with the bolts in their extended position,

a view similar to Fig. 1 but with retracted bolts, a front view of the lock according to Fig. 1 and 2,

a top view of the lock in the area of the faceplate,

a lock in a similar representation as in Fig. 1 and 2, but with only one bolt, a lock designed as a bar bolt lock with a large number of bolts in retracted and extended position and

Fig. 9 shows the gear element belonging to the lock of Fig. 7 and 8.

Fig. 1 shows a lock case 1 which is closed at the front with a cover 3. Two bolts 2a and 2b are mounted so that they can be extended and retracted via two slotted guides 6a and 6b and two stationary pins 10a and 10b.

When extending and retracting the bolts 2, a particularly long stroke is achieved with the help of a gear element

10 Fig. 2 Fig. 3 15 Fig. 4 Fig. 5 and 6 20 Fig. 7 and 8th

which has two oblique elongated holes 4a and 4b.

In Fig. 2, the lock is shown with the bolts retracted, with buttons protruding in front of the lock faceplate 3, which are pressed in when they come into contact with the door frame and trigger pawls 19. The lower pawl 19a acts on an undercut of the lower bolt 2b, while a middle pawl 19b acts on a projection 99 of the gear element 8 and the upper pawl 19c engages an undercut of the upper bolt 2a.

By releasing the pawls 19, a spring 23 can pull the gear element 8 downwards.

This pushes the pins 12 attached to the bolts into the tumblers 100. During this movement, the bolts 2 are moved into their extended position, and are locked in this position as soon as their pins 12 reach the tumblers 100. The lock is then in the position shown in Fig. 1.

The key is used to open the door from the outside. A locking bit 14 of a locking cylinder lifts the gear element 8 so that the pins 12 attached to the bolts move from the area of the recesses 100 into the area of the slanted slots 4. The further upward movement of the gear element 8 causes the bolts 2 to be fully retracted with the help of the pins through the slanted slots 4 until

the pawls 19 assume their locking position shown in Fig. 2.

Each of the pawls 19 is assigned a spring 18, which holds the pawl 19 in its locking position. Since a movement of the gear element 8 and thus a release of the bolts 2 from their retracted position is only possible if all three pawls 19 are actuated simultaneously, and since such an actuation is carried out by the three widely spaced buttons 5, it can be reliably ruled out that the bolts 2 are accidentally extended when the door is open and are damaged when closing or in turn damage the strike plate.

The middle button 5c does not act directly on the latches 2, but on the gear element 8, whereby the triggering of this middle button 5c alone does not allow movement of the gear element 8, since this is indirectly connected to the latches 2 via the obliquely running elongated holes 4 and the pins 12 arranged therein.

The door can be opened from the inside using the door handle. This means that the lock is designed as a panic lock, as operating the door handle alone is enough to open the door, even if the bolts have been extended beforehand.

When the door handle is operated, the handle follower 9 with its stop 7 is moved upwards. A pin 110 on the gear element 8 pushes the latter upwards until the bolts 2 are retracted and held in place by the locking pawls 19.

When the door is closed, the button 5 and the release of the pawls 19 cause the door to be automatically locked, so that the lock does not have to be locked using the key.

As indicated in Fig. 3 and clearly visible in Fig. 4, the buttons 5 are bevelled on both sides, so that the lock described can be used either on right- or left-hinged doors.

A second embodiment of a lock according to the invention is shown in Figs. 5 and 6. Similar components as in the first embodiment are designated with the same reference numerals.

A single bolt 2 is used in this second embodiment, whereby the bolt 2 is connected to a guide 120 so that the bolt 2 can be designed very stably and guided very precisely.

The gear element 8, which has two similar slanting slots 4 arranged one above the other at a distance in the first embodiment and which has only one such guide 4 in the second embodiment, can be modified by multiplying these components for use in a third embodiment, which is shown in Figs. 7 to 9. The basic function of the lock is the same here as in the first two embodiments. However, the third embodiment according to Figs. 7

to 9 to form a bar lock with a multitude of bolts&eegr; 2.

The protection against the bolts 2 being accidentally extended when the door is open can be done in a similar way to the first embodiment of Figs. 1 and 2. However, according to Figs. 7 to 9, only buttons 5 act on projections 99 of the gear element 8, which correspond to button 5c from Figs. 1 and 2. This simplifies the design, since the buttons can act directly on the gear element 8 and no interposed locking pawls are required. The large number of bolts 2 and the corresponding possible number of buttons 5 ensure that even with a lock according to Figs. 7 to 9, an accidental actuation of a single button does not lead to the bolts 2 being accidentally extended while the door is open.

Claims (6)

"Self-locking security door lock" Protection claims: 10 1. Self-locking security door lock with one or more bolts (2) which are locked against displacement in the extended position by a tumbler (100), whereby the extended bolts (2) can be both unlocked and retracted by actuating the handle, and with a locking device which has several locking pawls (19a, 19b, 19c) and which locks the bolts (2) in the retracted position, whereby the locking pawls (19a, 19b, 19c) of the locking device have several separate but equal It
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··· * *. * · · * ·* * * timely push buttons (5) which protrude with their heads over the lock face (3) can be lifted out so that the bolts (2) can then snap forward into the closed position, whereby the bolts (2) have a carry out the long-stroke closing stroke required for a security lock, characterized in that a displaceable gear element (8) with the necessary recesses (4a, 4b) is inserted to enable the long-stroke retraction movement of the bolts (2), and that the tumbler (100) is incorporated in the gear element (8) and can be moved with the gear element (8) in the vertical direction of the lock, is held by spring force (23) in an end position in which pins (12) attached to the bolts (2) engage in the tumblers (100) and prevent displacement of the bolts (2), wherein the gear element (8) can be lifted by means of the locking bit (14) of the locking cylinder (22) or by means of a stop (7) of the follower (9) and thereby the tumbler (100) is raised and released and the bolts (2) can be retracted, and in that the locking device comprises at least one pawl (19b) which acts on a projection (99) of the gear element (8) and thus indirectly locks the bolts (2). 2. Self-locking security door lock according to claim 1, characterized in that the locking device (19a, 19b, 19c) is independent 3 - from the usual locking system and disengagement with the follower or lock bit is prevented. 3. Self-locking security door lock according to claim 1 or 2, characterized in that the heads of the buttons (5a, 5b, 5c) converge in a mirror image, so that the lock can be installed either on the left or right. 4. Self-locking security door lock according to one of the preceding claims, characterized in that the bolt (2b) has a stop (15) which locks the bolt (2b) with the locking bit (14) until the pawls (19a, 19b, 19c) are latched. 5. Self-locking security door lock according to one of the preceding claims, characterized by an extension of the gear element (8) and the lock housing (1) to create a self-locking bar lock, in which at least several bolts can be extended and the door is secured from the lower edge to the upper edge. 6. Self-locking security door lock according to one of the preceding claims, characterized in that the locking device comprises a locking element located above the upper bolt (2a) and below the lower bolt (2b) and acting on these bolts (2a, 2b). •# - 4 pawls (19a, 19c).