EP3018273B1 - Additional lock - Google Patents

Description

Technical area

The invention relates to an additional lock for a door or a window, which has an operative connection between a thrust plate of the additional lock with a corresponding control mechanism of a main lock and thus controlled by this, wherein the additional locking comprises a housing with a rotatably mounted therein against its initial position biased locking hook which is rotatable upon impact of a striker pin in a recess of the housing in its locking position.

State of the art

For doors or windows with multiple locks, there are a variety of options for the design of additional locks. In most cases extendable or parallel to the forend slidable latch are used, which engage in corresponding recesses in closing pieces.

Also known are locks with rotary latch locks, which are often used for example in the automotive sector. Such a lock is for example in the DE 2345896 A1 shown. In the usual rotary latch locks the lock, as shown in this document, by a pivot lever which cooperates with a corresponding edge or recess on the pawl and blocked in the locked state against rotation in the opening direction. Such a structure is susceptible to errors, since the two rotatable intermeshing parts can easily wedge locking hook and pivot lever under load conditions. In order for the locking security is ensured, either complicated gear ratios for actuating the pivot lever must be provided, or the geometries between the active surfaces of pawl and pivot lever are made with very tight tolerances to allow both a secure locking and easy unlocking. This increases the Manufacturing costs, which is tolerable in a use as a main lock in, for example, a car, but which would turn out to be too high for the use of such a lock as additional lock on a door or a window.

In the DE 10 2009 048839 A1 a door or window rotary latch is described which, similar to the above-mentioned latches, has a pivot lever and a pawl which hold a bolt entering the latch and thus lock the latch. Again, there is the disadvantage that the structure is susceptible to errors and must be made with very tight tolerances.

Brief description of the invention

It is therefore an object of the present invention to overcome the above-mentioned disadvantages and to provide an additional lock, which offers the advantages of a rotary latch, but is still low in the production and offers a high locking security.

This object is achieved in that the thrust plate is biased substantially parallel to the longitudinal axis of the housing and slidably in the direction of its locking position, and that the thrust plate has an at least partially obliquely extending to its direction control link, in which a control pin of a substantially normal to Direction of movement of the thrust plate displaceable locking piece is guided, so that in the closed position of the pawl and thus also the closed position of the thrust plate rests an edge of the locking piece against a shoulder of the pawl and blocks it against rotation towards the starting position. The opening and locking mechanism of the auxiliary lock can thus be accomplished by only two linearly moving components, which cooperate with the locking hook, which on the one hand is very cheap to manufacture and on the other hand offers a high degree of security.

According to a further feature of the invention, it is provided that the shoulder of the pawl is formed at least two stages, whereby at least two locking points are created with the edge of the locking piece. Alternatively, the edge of the locking piece can be formed at least two stages. Since a certain delay sets in doors over time or depending on the weather and season, can be done by multi-level locking points in every situation a secure blocking of the auxiliary lock and the resulting tolerances can be compensated.

It is further a feature of the present invention that the operative connection between the main lock and the thrust plate of the additional lock is formed by a cable, wherein the pulling direction of the cable is opposite to the bias of the thrust plate. A structure with cable offers over a conventional construction with push rods the advantage that a much lower effort is necessary. It only needs to overcome the forces of the bias of the thrust plate of the auxiliary lock and no additional forces are expended for lifting a push rod.

It is a further advantageous feature of the invention that on the pusher plate at the opposite end of the cable to the main lock another cable is connected to the pusher plate, which is guided out of the housing and connected to other additional locks on the side facing away from the main lock side of the additional lock is. This makes it possible to connect as many additional locks, depending on the application, in series.

Finally, it is a feature of the present invention that the pusher plate is movable via the cable to an opening end position and lockable in this via the main lock, and that in the pusher plate is provided a displaceable substantially normal to the direction of movement of the pusher latch, which by means of a spring is biased in the direction of its extended position, and which in the opening end position of the thrust plate and in the closed position of the pawl with a Locking shoulder of the pawl is engaged and this resiliently locked in the closed position. Often locks are provided with a so-called "day position", wherein in the main lock, the trap is usually locked in the retracted position, and easy opening and closing a door is always possible. Such functions are often desirable in doors in public buildings or shops. If the door concerned have additional locks, they are usually locked in the open position. By the above feature, it is possible that the locking hook when closing a door, although by the provided catch in its locked position, but it can be moved back with little effort by overcoming the spring force of the locking catch back to its original position, making the door easy open. This offers the advantage that the door can not be pushed open easily, for example by wind or the like, but a user does not have to operate a door handle when opening and can press on the door with little effort.

Short description of the drawing figures

• Fig. 1 eine perspektivische Ansicht auf eine erfindungsgemäße Zusatzverriegelung mit Schließstück und abgenommenem Gehäusedeckel zeigt;
• Fig. 2 die Zusatzverriegelung aus Fig. 1 in einer Aufsicht in Ausgangsstellung zeigt;
• Fig. 3 die Zusatzverriegelung aus Fig. 2 in Sperrstellung zeigt;
• Fig. 4 die Zusatzverriegelung aus Fig. 2 in Öffnungsendlage bei aktivierter Tagstellung und mit dem Sperrhaken in Ausgangsstellung zeigt;
• Fig. 5 die Zusatzverriegelung aus Fig. 2 in Öffnungsendlage bei aktivierter Tagstellung in einer Zwischenstellung des Sperrhakens zeigt;
• Fig. 6 die Zusatzverriegelung aus Fig. 2 in Öffnungsendlage bei aktivierter Tagstellung mit in Sperrstellung verrastetem Sperrhaken zeigt;
• Fig. 7 eine perspektivische Ansicht von einer Seite der Schubplatte zeigt;
• Fig. 8 eine perspektivische Ansicht der anderen Seite der Schubplatte zeigt;
• Fig. 9 eine perspektivische Ansicht des Sperrhakens zeigt und
• Fig. 10 eine perspektivische Ansicht des Sperrstücks zeigt.

The invention will now be described with reference to the accompanying drawings, wherein

• Fig. 1 shows a perspective view of an inventive additional locking with closing piece and removed housing cover;
• Fig. 2 the additional locking off Fig. 1 in a supervision in initial position shows;
• Fig. 3 the additional locking off Fig. 2 in locked position;
• Fig. 4 the additional locking off Fig. 2 in opening position with activated day position and with the pawl in the initial position shows;
• Fig. 5 the additional locking off Fig. 2 in opening position with activated day position in an intermediate position of the pawl shows;
• Fig. 6 the additional locking off Fig. 2 in opening position with activated day position with locked in locking position pawl shows;
• Fig. 7 shows a perspective view from one side of the pusher plate;
• Fig. 8 shows a perspective view of the other side of the thrust plate;
• Fig. 9 shows a perspective view of the pawl and
• Fig. 10 a perspective view of the locking piece shows.

Description of the embodiments

In the Fig. 1 illustrated additional locking in the form of an additional lock with rotary latch lock has a housing 1, which is shown for better view with remote top plate. In the housing 1 is a pivotally mounted on a rotation axis 24 pawl 2, which against its initial position by means of a spring 4 (see Fig. 2 ) is biased. Parallel to the longitudinal side of the housing 1 is also movable by means of a spring 5 (see Fig. 2 ) arranged against its blocking position biased thrust plate 3. The thrust plate 3 has receptacles 16 for attaching tension cables (not shown), which are led out through openings 17 in the housing 1 and are connected to the main lock or other additional locks. In a further receptacle 20 in the thrust plate 3, a detent 18 is biased by a spring 19 in the direction of locking hooks 2. When closing the door or the window, the additional lock strikes a closing piece 7 with a striker pin 6, which thereby enters into a recess 8 in the housing 1 and in succession in a recess 9 in the pawl 2 and thereby rotated the pawl 2 in its closed position. The striker pin 6 is arranged vertically displaceable to compensate for position inaccuracies of the striker. The inlet slope of the recess 8 of the housing 1 brings the striker pin 6 in the correct position.

Fig. 2 shows a view of the additional lock Fig. 1 in starting position. The thrust plate 3 is pressed by the force of the spring 5 in the blocking position, wherein a normal to the direction of movement of the thrust plate 3 displaceable locking piece 11 with a control pin 12 in a slot 10 of the thrust plate. 3 intervenes. The link 10 is at least partially arranged obliquely to the direction of movement of the thrust plate 3, whereby the locking piece 11 is pressed in the direction of pawl 2. Since the pawl 2 is in the starting position, the locking piece 11 is located on the side of the pawl 2, whereby the pusher plate 3 can not fully reach the locked position. Now enters a striker pin 6 in the recess 8 of the housing 1, so the pawl 2 begins to rotate against the force of its spring 4 toward the closed position, wherein the striker pin 6 slides in a recess 9 of the pawl 2.

Upon reaching the closed position, as in Fig. 3 is shown, one edge 13 of the locking piece 11 slides over the shoulder 14 of the pawl 2, whereby the pusher plate 3 can continue to move toward locking position 2 in the direction of the closed position and thus the locking piece 11. By concerns of the shoulder 14 of the pawl 2 on the edge 13 of the locking piece 11, the lock is locked. The shoulder 14 may also be formed in multiple stages, wherein in the embodiment shown, a second stage 15 is provided. In the fully closed position, the edge 13 of the locking piece 11 abuts against this second stage 15. However, since it comes in practice to tolerances, for example by the delay of a door, can be achieved by providing a multi-stage shoulder even with larger tolerances still a safe closed position.

To open the additional lock the cable is actuated via the lock mechanism of the main lock, whereby the thrust plate 3 is pulled against the force of the spring 5. As a result, the locking piece 11 is pulled away from the pawl 2 and releases this over the guided in the gate 10 control bolt, to be able to return to its original position.

In the in Fig. 4 shown position, the thrust plate 3 is in an opening end position in which it can be locked via the cable from the main lock, whereby a day position for the additional lock is achieved. The pawl 2 is in initial position. In the area of Locking hook 2 comes in this position a normal to the direction of movement of the thrust plate 3 movable, biased by a spring 19 catch 18 to lie.

Now, if the door or the window is closed, the pawl 2 rotates, whereby the catch 18 is pushed back by a side surface of the pawl 2 against the force of its spring 19 in its receptacle 20, as shown in the Fig. 5 is shown.

Upon reaching the closed position of the pawl 2 according to the Fig. 6 , The catch slides over a locking shoulder 21 on the pawl 2, whereby it is held in this position. When opening the additional lock must be pulled only in the opening direction and the force of the spring 19 of the catch 18 to be overcome, whereupon the additional lock is released. Thus, even in the daytime position, the additional locking mechanism can be used to securely snap the door or window open, whereby opening without the use of a key or a door handle is possible only by mounting the door or the window.

The FIGS. 7 and 8 show in detail the thrust plate 3, which has on one side the recesses 16 for suspension of tension cables and the receptacle 20 for the catch 18. On the opposite side is the gate 10 for the control pin 12 of the locking piece 11, and a receptacle 22 for the spring fifth

Fig. 9 shows the locking hook 2, which has a recess 9 for receiving the striker pin 6. Around the axis of rotation 24 around a receptacle 23 for the spring 4 is arranged. In approximately opposite the recess 9 is the shoulder 14 for locking the pawl 2, which has a second stage 15 in the illustrated embodiment.

Finally, in Fig. 10 the locking piece 11 is shown, which is provided with a guide groove 25 which is guided on a corresponding rib in the housing. Further located itself on the locking piece 11 of the control bolt 12 which engages in the control link 10 in the thrust plate 3 and the edge 13, which cooperates with the shoulder 14 and the second stage 15 of the pawl in the locking position.

Claims (5)

1. Additional lock for a door or a window, said lock comprising an operative connection between a displacement plate (3) of the additional lock and a corresponding control mechanism of a main lock, and consequently said additional lock can be controlled by said main lock, wherein the additional lock comprises a housing (1) having a locking hook (2) that is pre-stressed against its starting position and is mounted in said housing in a rotatable manner and when a locking piece bolt (6)enters a recess (8) of the housing (1)said locking hook can be rotated into its locking position, characterised in that the displacement plate (3) can be displaced essentially parallel to the longitudinal axis of the housing (1) and said displacement plate is pre-stressed in the direction of its locking position, and that the displacement plate (3) comprises a control contour (10) that extends at least in sections at an incline towards the movement direction of said displacement plate and that a control bolt (12) of a locking piece (11) is guided in said control contour, being displaceable essentially normal to the movement direction of the displacement plate (3), so that in the locking position of the locking hook (2) and consequently also the locking position of the displacement plate (3) an edge (13) of the locking piece (11) lies against a shoulder (14) of the locking hook (2) and blocks said locking hook from rotating in the direction of the starting position.
2. Additional lock according to Claim 1, characterised in that the shoulder (14) of the locking hook (2) or the edge (13) of the locking piece (11) is configured in an at least two-stepped manner, as a result of which at least two points that lock with the edge (13) of the locking piece (11) or the shoulder (14) of the locking hook (2) are provided.
3. Additional lock according to Claim 1 or 2, characterised in that the operative connection between the main lock and the displacement plate (3) of the additional lock is formed by means of a cable pull, wherein the pulling direction of the cable pull is opposite the direction in which the displacement plate (3) is pre-stressed.
4. Additional lock according to Claim 3, characterised in that a further cable pull is connected to the displacement plate (3) on the displacement plate (3) on the opposite end of the cable pull to the main lock, said further cable pull being guided out of the housing (1) and being connected to further additional locks on the side of the additional lock that is remote from the main lock.
5. Additional lock according to Claim 3 or 4, characterized in that the displacement plate (3) can be moved by way of the cable pull into an opening end position and can be locked by way of the main lock in said opening end position, and that a detent (18) that can be displaced essentially normal to the movement direction of the displacement plate (3) is provided in the displacement plate (3), said detent being pre-stressed in the direction of its extended position by means of a spring (19), and being in engagement in the opening end position of the displacement plate (3) and in the locking position of the locking hook (2) with a latching shoulder (21) of the locking hook (2), said detent latching the locking hook in a resilient manner in the locking position.

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