EP3064679B1 - Lock - Google Patents

Description

Technical area

The invention relates to a lock for a door or a window comprising a housing, actuatable by means of a locking mechanism via a push rod locking elements and a spring-loaded latch, which can be brought via a latch retracting lever in a retracted position, wherein the Fallenrückzugshebel means of the locking mechanism via a change lever and optionally is operable via a nut, wherein the change lever in the starting position with an attack surface in the path of a Mitnehmerfortsatzes driven by the locking mechanism interchangeable disc, wherein the Mitnehmerfortsatz (8) of the interchangeable disc (9) formed as an open space circular ring sector forms a first free lift, said the change disc (9) further comprises a projection (11) which engages in a groove (12) of a gear (13) of the locking mechanism, and wherein the groove (12) is in the form of a circular ring sector and forms a second free stroke.

State of the art

In the case of a multi-speed lock, the locks are pushed out or retracted by repeatedly turning the lock cylinder around. In the unlocked position usually a changeover function is to be provided in addition, whereby it is possible to bring by further rotation of the lock cylinder in the opening direction and the case in a retracted position. The necessary change lever, which establishes the operative connection between the trap and locking mechanism, should be coupled or moved only in the unlocked position with the locking mechanism, so blocking and unlocking the blocking mechanism is not blocked by the change lever and unimpeded turning around of the Locking cylinder is possible.

In one possible embodiment of an interchangeable function, this is achieved by an exchange disc with a certain free lift, wherein the interchangeable disc in the unlocked position of the locking mechanism with a change lever, which is biased in the direction of the interchangeable disc, can be coupled. Due to the structural conditions, this bias is generally achieved by a tension spring, which is in terms of assembly work in assembling the lock has a negative effect and thus the production costs are increased.

An example of how a free-lift formed in a removable disk can be in the DE 3505379 C described. In this embodiment, however, only a free lift of about 180 ° is provided, which is sufficient only for a catchy lock. Even if one widened the arc slot described over a larger degree range, a multiple reversal of the lock mechanism would not be possible without additional coupling devices, since the free lift is insufficient.

A lock according to the preamble of claim 1 is in the EP 1 460 215 A2 described.

Another problem with known locks is that when actuated change the return to the starting position is effected solely by the force of the latch spring. This has several negative effects in practice. The possible force which the latch spring can exert is regulated and limited by standards. If this force now also acts on a change lever or on components connected to it when the latch is pushed out, it is more common that the force for a complete return to the starting position is insufficient. The case and the change can be stuck in the housing in the retracted position in the worst case. Such a lock is therefore significantly more prone to failure and maintenance.

Brief description of the invention

It is an object of the present invention to provide a lock, which eliminates the above-mentioned disadvantages and has an exchange function that is easy to manufacture and assemble. Furthermore, in such a lock even after prolonged use sufficient force for the safe provision of the case and the change lever are provided, whereby the lock has a low susceptibility to error and low maintenance.

This object is achieved in that the change lever is linearly displaceable and biased by an associated compression spring in the direction of its initial position, and that furthermore the two free strokes cover in total a degree range of at least 360 °, preferably of at least 450 °. By providing a double free stroke, it is possible to allow a double-speed rotation of a lock cylinder in a multi-speed lock, without the change lever prevents this. This also makes it possible to carry out the change lever as a linearly displaceable element, which on the one hand simplifies the assembly and on the other hand also increases the locking safety of the lock. The additionally acting on the change lever compression spring, which is supported in the housing, allows the safe return of the change lever, wherein the latch spring is relieved for the return operation. It will be understood by one of ordinary skill in the art that the second free-stroke may also be formed in the reverse manner by locating the projection on the gear and the annular sector-shaped groove on the interchangeable disk.

According to a possible embodiment of the invention, it is provided that the first free lift, which is formed by the circular ring sector designed as an open space, which surrounds the driver extension of the removable disk, is approximately 300 °. Furthermore, it is a feature of the invention that the second free stroke in the form of the annular sector-shaped groove in the gear of the locking mechanism is about 300 °. In the prior art is at a mehrgängigen lock between sprocket and change disc no or too low free lift, which is why the change lever must always be moved laterally out of the path of the disc. The use of a compression spring directly on the change lever is therefore almost impossible. In order to realize a linearly displaceable change lever with an associated compression spring and the associated advantages of a simpler installation and a larger restoring force, a respective free-stroke of about 300 ° can be provided both on the change disc and / or on the gear wheel of the lock according to the invention. In the interchangeable disk, this is achieved by the designed as an open area circular ring sector, which surrounds the Mitnehmerfortsatz, and in the gear of the free lift is through the formed annular-sector-shaped groove. The initial position of the change lever can therefore always be left in the same position and a lateral swinging is not required.

At a maximum rotation of the lock cylinder, for example, about 900 ° and a reduction gear of the locking mechanism of 0.5 you need between gear and change lever a free lift of about 450 ° so that there is no collision between change lever and disc. With a total of about 600 ° free lift as the sum of the first and second free lift this is easily possible and there are even reserves available. Depending on the design of the reduction gear and less degrees summed free travel may be sufficient.

It is a further feature of the present invention that the driver extension and the projection are arranged on respective opposite sides of the removable disk. This offers a very easy way to make optimal use of the available space in the housing and to place the interchangeable disc between the stick gear and the lever change.

According to a further feature of the invention, it is provided that the change lever has a control pin which is guided in a slot, preferably in the form of a slot in the case retracting lever, whereby a coupling between the change lever and the case retracting lever is made. When the latch retracting lever is rotatably disposed about a nut as a circular member and the change lever is formed as a linearly displaceable member substantially linearly in the direction of movement of the push rod, when the two components are coupled together, some lateral movement due to rotation must be compensated of the latch retracting lever. This can be achieved by a backdrop in the form of a substantially transversely to the direction of movement of the change lever arranged slot in a simple manner. It is understood by those of ordinary skill in the art, that of course, the control pin on the latch retracting lever and the gate on the change lever can be arranged.

Finally, it is a feature of the present invention that the gear of the locking mechanism, which has the groove formed as a circular sector, at the same time forms the stick gear, which serves for actuating the push rod and the associated locking elements. This makes it possible to realize the invention with few components, which reduces the manufacturing cost.

Short description of the drawing figures

• Fig. 1 ein erfindungsgemäßes Schoss in verriegelter Stellung zeigt,
• Fig. 2 das Schloss aus Fig. 1 in entriegelter Stellung zeigt,
• Fig. 3 das Schloss aus Fig. 1 mit gezogenem Wechsel zeigt,
• Fig. 4 und Fig. 5 perspektivische Ansichten eines Stockzahnrads zeigen,
• Fig. 6 und Fig. 7 perspektivische Ansichten einer Wechselscheibe zeigen,
• Fig. 8 und Fig. 9 perspektivische Ansichten eines Wechselhebels zeigen,
• Fig. 10 und Fig. 11 perspektivische Ansichten eines Fallenrückzugshebels zeigen und
• Fig. 12 eine alternative Ausführungsform der Erfindung zeigt.

The invention will now be described in more detail with reference to the accompanying figures, wherein

• Fig. 1 shows a lap according to the invention in the locked position,
• Fig. 2 the castle off Fig. 1 in unlocked position,
• Fig. 3 the castle off Fig. 1 shows with drawn change,
• 4 and FIG. 5 show perspective views of a stick gear,
• Fig. 6 and Fig. 7 show perspective views of an interchangeable disk,
• FIGS. 8 and 9 show perspective views of an exchange lever
• Fig. 10 and Fig. 11 show perspective views of a latch retracting lever and
• Fig. 12 an alternative embodiment of the invention shows.

Description of the embodiments

In Fig. 1 a lock is shown in lateral view with removed housing cover. Furthermore, the push rod was not drawn for a better view. The lock comprises a housing 1, in which a biased by a spring 16 case 3 is arranged. Further, the lock comprises locking elements 2, here in the form of a simple locking bolt, which via a locking mechanism, here a reduction gear of a plurality of gears, via a push rod (not shown) can be pushed out. The locking mechanism is actuated by a lock cylinder 17.

The trap can be brought either by a nut 6 and an associated door handle on a case retraction lever 4 in the retracted position or by a change, which is actuated by the lock cylinder 17 via the locking mechanism. The change comprises a change lever 5, which by means of an associated Compression spring 10 is biased in the direction of its initial position. The change lever 5 engages at one end with a control pin 14 in a gate 15 of the case retracting lever 4 and is thus coupled to this. At the other end of the linearly displaceable change lever 5 is an attack surface 7, which projects into the path of movement of a driver extension 8 of a removable disk 9. The interchangeable disc 9 also has a projection 11 which is guided in a groove 12 of the gear 13.

In the in Fig. 1 shown position with ejected locking elements 2, the gear 13 is rotated in its counterclockwise end position. The projection 11 of the interchangeable disc 9 abuts one end of the groove 12 and the interchangeable disc 9 has also been rotated counterclockwise by part of its free stroke. When moving towards the unlocked position, see Fig. 2 the gear 13 is rotated by the locking mechanism in a clockwise direction. As a result, the push rod is raised and the locking elements 2 retracted. Furthermore, first the free stroke of the groove 12 of the gear 13 is utilized until the projection 11 of the interchangeable disc 9 is taken from the other end of the groove 12. Upon further rotation in a clockwise direction, the remaining free lift of the interchangeable disk 9 is now utilized until the driver extension 8 strikes against the contact surface 7 of the interchangeable lever 5.

If the lock cylinder is rotated even further clockwise, the Mitnehmerfortsatz 8 of the removable disk 9 pushes the change lever 5 against the force of its compression spring 10 via the engagement surface 7 and over the control pin 14 which is guided in the gate 15, the Fallenretzugshebel 4 is rotated and brings the trap 3 to its retracted position, which is in Fig. 3 is shown.

In the 4 and 5 the gear 13 is shown in detail. On one side of the gear 13 are control projections 18 which cooperate with corresponding recesses along the push rod to move them. On the opposite side, the groove 12 is arranged, which as about 300 ° wider Annular sector is formed, and thus which forms the second free lift.

The Fig. 6 and 7 show the interchangeable disc 9, which on one side has the projection 11 which in the groove 12 of the gear 13 (see Fig. 5 ) is guided. The driver extension 8 is surrounded on the opposite side by a free surface which is likewise designed as an annular segment and forms the first free lift.

The 8 and 9 show detailed views of the change lever 5. At one end is the attack surface 7, which in the path of movement of the Mitnehmerfortsatzes 8 of the removable disk 9 (see Fig. 7 protrudes. At the other end there is a control pin 14 for coupling to the latch retracting lever 4. Furthermore, the change lever 5 has a thickened portion with a receptacle 19, in which the compression spring 10 (see Fig. 1 ) is stored.

The Fig. 10 and 11 Finally, show detailed views of the case retracting lever 4, which in the embodiment according to the Fig. 1 to 3 is mounted as a rotatable element around the nut 6 around. In the case retracting lever 4, a link 15 is arranged, in which the control pin 14 of the change lever 5 (see Fig. 8 ) is guided.

In Fig. 12 another alternative embodiment is shown, in which the nut 6 has a separate control extension 20, by means of which the latch 3 can be brought into the retracted position. The change lever 5 and the coupled with this case retracting lever 4 are formed here as independent of the nut 6 components.

Claims (6)

1. Lock for a door or window, said lock comprising a housing (1), locking elements (2) that can be actuated by means of a blocking mechanism by way of a displacement rod, and also a spring-loaded latch (3) that can be brought into a retracted position by way of a latch-retracting lever (4), wherein the latch-retracting lever (4) can be actuated by means of the blocking mechanism by way of a transmission lever (5) and also where appropriate can be actuated by way of a nut (6), wherein in the starting position the transmission lever (5) protrudes with an engagement surface (7) into the movement path of a carrier extension (8) of a transmission disc (9) that can be driven by the blocking mechanism, wherein the circular ring section surrounding the carrier extension (8) of the transmission disc (9) is embodied as a free surface and embodies a first free displacement, wherein the transmission disc (9) moreover comprises a projection (11) that engages in a groove (12) of a gear wheel (13) of the blocking mechanism, and wherein the groove (12) is embodied in the form of a circular ring section and embodies a second free displacement, characterized in that the transmission lever (5) can be displaced in a linear manner and is pre-stressed in the direction of the starting position of said transmission lever by means of an associated compression spring (10), and that moreover the two free displacements cover in total a degree range of at least 360°, preferably at least 450°.
2. Lock according to Claim 1, characterized in that the first free displacement - which is embodied by means of the circular ring section that is embodied as a free surface and surrounds the carrier extension (8) of the transmission disc (9) - amounts to approximately 300°.
3. Lock according to Claim 1 or 2, characterized in that the second free displacement in the form of the circular ring section-shaped groove (12) in the gear wheel (13) of the blocking mechanism amounts to approximately 300°.
4. Lock according to any one of the claims 1 to 3, characterized in that the carrier extension (8) and the projection (11) are arranged in each case on opposite-lying sides of the transmission disc (9).
5. Lock according to any one of the claims 1 to 4, characterized in that the transmission lever (5) comprises a actuating pin (14) that is guided in a guiding slot (15) preferably in the form of an elongated hole in the latch-retracting lever (4), as a result of which a coupling is produced between the transmission lever (5) and latch-retracting lever (4).
6. Lock according to any one of the claims 1 to 5, characterized in that the gear wheel (13) of the blocking mechanism that comprises the groove (12) that is embodied as a circular ring section simultaneously forms the stick gear wheel that is used to actuate the displacement rod and the locking elements (2) that are connected to said displacement rod.

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