EP3155193A2

EP3155193A2 - Lock system

Info

Publication number: EP3155193A2
Application number: EP15728538.8A
Authority: EP
Inventors: Holger Pollmeier
Original assignee: Baugruppentechnik Pollmeier GmbH
Current assignee: Baugruppentechnik Pollmeier GmbH
Priority date: 2014-06-12
Filing date: 2015-06-12
Publication date: 2017-04-19
Also published as: WO2015189391A2; CN106460409A; WO2015189391A3

Abstract

The invention relates to a lock system comprising a lock plate (14) which is arranged in a fixed manner on a first building or furniture part (10) and a lock (20) which is arranged in a fixed manner on a second building or furniture part (12), which comprises a lock (26) which can be moved between a locking position, in which it locked to the locking plate (14), and an unlocking position. Said lock system is characterised is that the lock (26) is embodied as a latch bolt in order to move from the unlocking position into the locking position, and that the lock (20) comprises an electric drive which interacts with the lock in order to move said lock from the locking position into the unlocking position.

Description

locking system

The invention relates to a locking system with a fixedly arranged on a first building or furniture part strike plate and a fixed to a second building or furniture part arranged lock, which has a bolt which is locked between a locking position in which he locks the strike plate, and an unlocked position is mobile.

In particular, the invention is concerned with a locking and locking system for doors.

In a conventional locking system, the strike plate is attached to a door frame, and the lock is installed in a door leaf and has a latch which engages in the locking position in an opening of the strike plate. The latch is resiliently biased into the locking position and has a ramp for the striker plate so that it can temporarily escape when the door falls into the lock. Alternatively, magnetic traps are used in which the trap is pulled by a permanent magnet in the opening in the strike plate. To open the door, a latch is usually provided with the case is mechanically withdrawn into the unlocked position.

In addition, the lock usually has a latch, which by a

Lock cylinder is actuated and, when the door is completed, engages in a further opening of the strike plate.

There are also electronically operated door locks are known in which the bolt is blocked by means of an electromagnet in the locked position or an electromagnet serves to block the door handle (DE 33 22 197 AI) or the mechanical connection between the door handle and the case auf- lift (DE 602 08 663 T2).

In addition, door locks with latch and bolt are known in which the case is moved mechanically by means of a pawl and the bolt for closing the door is electromagnetically moved (DE 3707284 A1, DE

3606620 A1). The object of the invention is to provide a locking system that offers increased ease of use.

This object is achieved by a locking system having the features of the independent claim. Advantageous embodiments and further developments of the invention are specified in the subclaims.

An inventive locking system of the type mentioned above is characterized in that the latch of the lock is formed as a case to move from the unlocked position to the locking position, and that the lock has an electric drive, which cooperates with the bolt to move it from the locking position to the unlocked position. In the locking system according to the invention thus the movement of the bolt between the unlocked position and the locking position is achieved in that the latch is formed as a latch, which automatically assumes the locking position when the lock is relative to the strike plate in a lockable position.

The movement of the bolt between the locking position and the unlocked position, however, is controlled by the electric drive. For unlocking, therefore, only e.g. a switch to be operated, which controls the drive via a control device, and there is no mechanical operation of the bolt on a door handle or a mechanical lock required. Optionally, a motion detector or a contact sensor arranged on the door leaf or integrated into the door latch can be used to control the drive, so that not even a special switch operation is required. Similarly, an operation of the bolt via wireless acting, to be carried on the user's body key or other wireless connections such as Bluetooth, wireless LAN (Wireless Local Area Network), RFID (Radio Frequency Identification) and the like is possible, possibly in combination with a suitable application ("App") on a smartphone or similar.

The combination of automatic latching, as in a latch, and the electrically energizable latch, combine the functions of the latch and latch of a conventional mechanical lock into a single component, referred to herein as a "latch" The invention is suitable for building doors as well as for securing doors or flaps of cabinets or other furniture or containers against unintentional opening. In an advantageous embodiment, the actuation of the bolt for unlocking takes place solely on electrically driven paths. This allows a very simple and small-sized design of the castle. It is then only a matter of programming the controller, whether the door can be opened by switch operation or if the door is permanently locked and unlocking is only possible when a switch is operated via a special key or by entering an electronic key. However, it may additionally be provided with an actuating mechanism, which acts independently of the drive on the latch. The doorknob can then be used for emergency release, for example.

The power supply of the lock can be done either via a battery or an inductive coupler, which transfers the electrical energy from the side of the door frames forth on the door leaf, so that no sliding contacts or flexible cables are required for power supply when the lock with the electric drive located in the movable door leaf.

Since no pawl is required for the mechanical operation of the bolt, it is also possible in the system according to the invention, however, to mount the lock on the side of the frame and the striking plate on the side of the door leaf so that no power supply into the movable door leaf is required is. For actuation, a switch can also be positioned in the region of the frame or on a wall. Alternatively, it is possible to attach a door unlocking switch, for example, a capacitive touch sensor, to the door panel to effect unlocking. The signal of this contact sensor can then be transmitted to the frame side, for example by capacitive coupling. Likewise, a switch can be provided on the door leaf, which can be activated via radio and / or optically, e.g. via an optocoupler, with the control electronics on the frame side communicates. In an advantageous embodiment of the locking system has the

Locked on an electromagnet with a coil as an electric drive, whose axis is oriented parallel to the direction of movement of the bolt and which cooperates with a rigidly connected to the bolt anchor. A derar tiger drive is designed mechanically simple and therefore correspondingly inexpensive and low-maintenance.

Optionally, the latch may be resiliently biased in the unlocked position, so that the door is unlocked when de-energized coil and is held only when energized coil in the locked position. In the event of a power failure, the door will be unlocked automatically. This embodiment is suitable, for example, for toilet doors, which usually need to be held only temporarily in the closed position. A switch for activating and deactivating the electromagnet then only needs to be provided on the inside of the door.

In other embodiments, it is possible that the latch remains latching both in the locked position and in the unlocked position and the coil only needs to be energized to change the position of the bolt. Normally, switches will then be provided for locking and unlocking on both sides of the door. However, it is also possible to "complete" the door simply by one side, that on one side of the door, an additional switch is provided with which the unlocking can be blocked from the opposite side by electronic means.

This design is suitable, for example, for doors within an apartment and then makes it possible to enclose in a living room, so that the door can not be opened from the corridor side. On the other hand, the circuit can be designed so that the lock is automatically released when the door is opened from the living room side. This prevents users from accidentally locking themselves out.

The latch can be provided with a run-on slope, similar to a conventional latch, so that the door can be mechanically dropped into the lock. In a particularly advantageous embodiment, however, the control for the drive on a sensor that detects the closed position of the door and / or reaching the closed position. As soon as this sensor detects that the door is open, the latch is held in the unlocked position, and only when the sensor detects that the door has again reached the closed position, the latch is automatically transferred to the locking position. The drive creates an active trap. This has the advantage that you can practically noiselessly drop the door into the lock, since the usual impact sound when hitting the trap on the

Striker plate is avoided. The closing movement of the door is then rich the closed position only attenuated by the usually present on the door frame seal, so that the door falls very quietly. This solution is particularly suitable for swing doors that are locked in the closed position, but after the lock has been released, for example, by means of a motion detector or touch switch, can be opened in both directions.

In a further advantageous embodiment, a magnetic trap principle is used to move the bolt at a suitable position of the lock relative to the strike plate from the unlocking position to the locking position. For this purpose, for example, a permanent magnet is arranged on the side of the strike plate and / or on the side of the lock, which attracts the latch passive magnetically in the direction of the locking position. In a further advantageous embodiment of the locking system, the lock on an electric motor as an electric drive, wherein a rotational movement of the electric motor is preferably transmitted via a rack on the bolt. In this case, the electric motor particularly preferably acts on a carriage, which is preferably displaceably guided parallel to the latch, and which is coupled to the latch. Here, more preferably, the carriage and the latch are coupled together so that they have a play towards each other in the direction of their leadership, such that in a first position of the carriage, the latch can be located both in the unlocked position, as well as in the locked position, and that in a second position of the carriage, the bolt is in the unlocked position. The freedom of movement of the bolt in the first position of the carriage allows the bolt to move from the unlocked position to the locked position, thus enabling the bolt to function as a latch.

In a further development of the locking system, a third position of the carriage is provided, in which the bolt is in the locking position. In the third position, the bolt is actively moved by the electric drive into the locking position. If the latch is chamfered in the manner of a trap, the pushing in leads to an active closing of the door, in which the door leaf is pressed against the door seal. Such a closing operation may be useful, for example, to prevent a pull through the gap between the door frame and the door, or to make a door particularly sonic. close tight. If the third position of the carriage is held permanently by the drive, a higher locking security of the locking system is achieved. The permanent holding of the third position can for example be achieved without energy by a self-locking drive.

In the following, embodiments of the invention will be explained in more detail with reference to the drawing.

Show it :

1 shows a schematic section through a first embodiment of a door locking system according to the invention.

FIGS. 2 and 3 are detail views of FIG. 1 for the locked and unlocked states of the system;

Fig. 4 is a detail of Fig. 1;

Figures 5 and 6 are each a horizontal section through the door lock system of Figure 1 during an emergency release.

Fig. 7 is a plan view of a lock of a second embodiment of a door lock system according to the invention; Fig. 8 is a sectional view of the lock of Fig. 7;

Fig. 9 is an isometric view of the lock of Fig. 7;

Fig. 10A-C detailed drawings of components of the lock of FIG.

7 in three different states of the system; and

FIGS. 11A-D show various views of another embodiment of a lock of a locking system in a locked condition; and

FIGS. 2A-D show different views of the further exemplary embodiment of the lock from FIG. 11 in a locking system in an actively locked state. In Fig. 1 sections of a door frame 1 0 and a door leaf 1 2 a door (in this example, a swing door) are shown in a sectional view, which are locked together by a system according to the invention. In the door frame 1 0 as usual, a strike plate 14 is recessed, which has a recess 1 6, in the present embodiment, an insert 1 8 is inserted with a trough-like recess. In the interior of the door leaf 1 2, a lock 20 is received, which has a lock housing 22 and on the closing plate 14 side facing by a cover plate 24, also called Stülp completed.

It is noted that in this as well as the other embodiments shown in this application, the lock 20 in the door frame 1 0 and the strike plate 14 may be disposed in the door panel 12. A latch 26 is movably guided in the lock housing 22 and is shown in Fig. 1 in a locking position in which it protrudes through an opening of the end plate 24 into which the recess of the insert 1 8 and thus the door leaf 1 2 form-fitting manner in the opening first 6 locked. The guide for the latch 26 is formed by a coil support 28 which is fixed in

Lock housing 22 is held and on which a coil 30 is wound. The coil 30 forms an electromagnet that generates a magnetic field oriented parallel to the direction of movement of the bolt 26 in the space area occupied by the latch 26. The coil 30 and the bobbin 28 can have approximately the shape of a rectangle seen in the axial direction, the dimensions of which are larger in the vertical direction than in the transverse direction (perpendicular to the plane in Fig. 1), so that the coil in the relatively narrow lock housing 22 accommodate leaves.

The bolt 26 is integrally formed with an armature 26a, which consists of non-magnetic material and in the spaced apart two oppositely poled permanent magnets 32, 34 are arranged (in the example shown each consist of two parts).

In the example shown in the insert 1 8 a permanent magnet 36 is fixed, and at the opposite end of the bolt 26, a further permanent magnet 38 is mounted in the lock housing 22.

The bolt 26 and the arrangement of permanent magnets are shown in Fig. 2 and 3 in a larger scale. 2 corresponds to the locking position 1, while FIG. 3 shows the latch 26 in its unlocked position.

The north poles and south poles of the permanent magnets 32, 34, 36 and 38 are each marked by opposite hatchings in the drawing.

In the state shown in Fig. 2, the latch 26 abuts against the permanent magnet 36 within the insert 18, and the permanent magnet 32 is attracted to the permanent magnet 36 so that the latch remains latched in the latched position. In this position, the permanent magnet 32 is slightly outside the left end of the coil 30, and the permanent magnet 34 is located at the right end of the coil. If the coil 30 is energized so that an attractive, to the right (in unlocking) directed force acts on the permanent magnet 32, the other permanent magnet 34 of the bolt is repelled, so also pressed in unlocking. The force thus generated overcomes the attraction between the permanent magnets 36 and 32, and the bolt moves to the unlocking position shown in Fig. 3, in which it rests against the permanent magnet 38. In this position, the left permanent magnet 32 is now located at the left end of the coil, and the right permanent magnet 34 is outside the coil and is attracted by the permanent magnet 38, so that the latch now remains self-holding in the unlocked position, even if the coil 30 is de-energized becomes. Only when the coil 30 is energized in the opposite direction, the latch 26 returns to the locking position of FIG. 2.

Since the current needs to flow in the coil 30 only during the short moment of switching, a battery that can be accommodated in the lock housing 22 can be sufficient for the power supply.

Optionally, it is also possible that the latch 26 is resiliently biased by a spring, not shown, in the unlocked position of FIG. This spring can be interpreted so that the bolt 26, even if it is in the locking position of FIG. 2 and the attractive force of the permanent magnet 36 is exposed, is reliably pulled into the unlocked position when the coil 30 is de-energized. This ensures that the door is in any case unlocked and can be opened when the battery used for the power supply is exhausted or due to other disturbances the current flow through the coil 30 is interrupted. However, it is in this In this case, it is necessary to energize the coil 30 permanently, as long as the latch 26 is to be held in the locking position according to FIG. However, the magnetic forces and the spring force can be adjusted so that a very low current flow is sufficient. This solution is particularly suitable for doors which need to be kept closed only for relatively short periods of time, for example in the case of toilet doors.

In other embodiments, the current for the coil 30 may also be provided by a power supply and fed, for example via an inductive coupler from the side of the door frame in the door leaf.

As shown in Fig. 1, the lock housing 22 includes a circuit board 40 which is equipped with electronic components, not shown in detail for driving the coil 30. In the example shown, this circuit board is electrically connected to a touch switch 42, which is located on at least one side of the door on the outer surface of the door leaf 1 2. In the normal state, the door is closed and is locked in the closed position by the latch 26 held in the locking position. When a user wishes to open the door, he presses on the touch switch 42 by hand, temporarily activating the spool 30 and moving the latch 26 to the unlocked position. The user therefore needs only a slight pressure on the door leaf 1 2 and the touch switch 42 exercise to open the door. When the door leaf 1 2 again approaches the closed position, a sensor 44 arranged on the circuit board 40 detects the magnetic field of a further permanent magnet 46 which is in the corresponding position in the

Striker plate 14 is inserted. Thereby, a (normally de-energized) acceleration sensor 48 is activated, which detects the exact time at which the door leaf abuts the fold. By the acceleration sensor 48, a renewed temporary energization of the coil 30 is triggered, so that the latch 26 returns to the locking position. The end plate 24 is preferably made of non-magnetic material, such as stainless steel, so that the magnetic field of the permanent magnet 46 is not shielded.

In the example shown, the lock housing 22 includes a square socket 50 for the square of an ordinary doorknob. However, the doorknob serves in this example only as a handle for moving the door leaf 1 2 but not for Operation of the bolt 26. Accordingly, the square holder 50 is not rotatable but rigid, so that the door handle can not be pressed down. Alternatively, instead of the touch switch 42 disposed on the surface of the door panel, a touch switch integrated with the doorknob or door handles on one side or both sides of the door or detecting the capacitive damping of the doorknob may be used. In this case, the unlocking of the door can be achieved in a familiar manner by touching the door handle, except that this door handle does not need to be depressed.

To illustrate this embodiment, Fig. 1 shows a metal foil 52, z. As a copper foil, which is electrically connected to the circuit board 40 and surrounds the square socket 50 at least over part of its circumference. As shown more clearly in FIG. 4, the metal foil 52 has an electrically insulating coating 54 on the side facing the square receptacle 50. From the metal doorknob here is a square 56 can be seen, which forms a capacitor with the metal foil 52, with the coating 54 as a dielectric. When a user touches the door handle by hand, the capacitance of the capacitor changes, and this change is detected by the circuit on the board 40 and triggers the activation of the coil 30.

Optionally, however, the doorknob may also be rotatably mounted in the usual way and be part of an additional mechanical actuating mechanism for the latch 26. The square socket for the door handle would then be received in a known manner in a rotatable nut which is mechanically coupled to the bolt 26 via levers and suitable couplings in such a way that the bolt can optionally also be transferred into the unlocked position with the aid of the door latch in which the electromagnetic actuation and the mechanical actuation should preferably operate independently of each other. The door handle could then serve as an emergency release in the event that the electromagnetic release system fails. Such a mechanical actuation possibility for the latch 26 is described in the second embodiment of a door lock system in connection with FIGS. 4 to 9.

As a simple example of an emergency release, Figs. 2 and 3 illustrate an embodiment in which a flexible drawstring 58 is secured to the latch 26, the other end (not shown) being connected to the aforementioned lever on the nut. When the doorknob is depressed, the drawstring pulls 58, the latch 26 from the locking position shown in Fig. 2 in the unlocking position shown in Fig. 3, and the permanent magnets 34 and 38 ensure that the latch then remains in this position. In this way, an emergency release is realized. When the doorknob is released, the drawstring 58 sags limp.

Of course, the drawstring 58 need not be connected via a nut with a doorknob, but it may also be accessible in other ways to allow an emergency release of the door.

As another example, Figures 5 and 6 illustrate a magnetic emergency release system having a rod-shaped unlocking tool 60 which carries a strong permanent magnet 62 at one end. When this permanent magnet 62 is brought close to the latch 26 and then moved from left to right as shown in FIGS. 5 and 6, the magnetic interaction between the permanent magnet 62 and one or both of the permanent magnets 32 and 34 in the latch 26 to that the bolt

is taken in the unlocked position. A further exemplary embodiment of a locking system according to the application is described in FIGS. 7 to 10. Identical reference signs in these figures denote the same or equivalent elements as in FIGS. 1 to 6. In FIGS. 7 to 9, a lock 20 of the locking system is shown. In Fig. 7, the lock 20 is shown in a plan view of the side of the lock 20 with the side cover open. FIG. 8 shows a section through the lock 20 along the section line A - A indicated in FIG. 7. Finally, FIG. 9 shows an isometric oblique view of the lock 20, in which likewise one of the side covers is removed, for a view into the internal structure of the castle 20 grant.

The lock 20 is formed as in the first embodiment as a mortise lock, which is inserted into a preferably vertically extending end face of a door. In the context of the door, a strike plate is arranged with an opening, with which the lock 20 cooperates. The striking plate is formed, for example, as shown in the embodiment of FIG. 1. In contrast to the local strike plate 14 can in which in the Fig. 7 to 1 0 illustrated embodiment of the permanent magnet 46 omitted.

As in the first embodiment, the lock also here has a latch 26 which can retract into the opening of the strike plate. The closing of the lock 20 takes place according to a magnetic trap principle. For this purpose, 26 permanent magnets are arranged in a front, the strike plate facing region of the bolt. These are from the inside of the

Lock 20 pressed into a corresponding recess in the bolt 26 or glued so that they are not visible from the outside.

Preferably, the latch 26 is at least in its front region of a non-magnetic material, so that the magnetic flux of the permanent magnets is not affected by the wall of the bolt 26. The latch 26 may be made, for example, as a plastic injection molded part. Alternatively, the latch 26 may also be made of aluminum, for example. As the permanent magnet in the striking plate attracting element can be arranged either a ferromagnetic element or a correspondingly aligned further permanent magnet.

In contrast to the embodiment shown in FIGS. 1 to 6, a drive of the bolt 26 in the present embodiment is not directly electromagnetic, but electric motor. For this purpose, an electric motor 70, in the present case designed as a geared motor, is arranged in the upper region of the lock 20. The electric motor 70 acts via a gear acting as a driven member 72 gear on a rack 74 b, which is pronounced in a horizontally movable guided carriage 74. In the illustration of Fig. 7, the carriage 74 is disposed below a rear, pin-like portion 26b of the bolt 26 and visible only through an opening in the bolt 26, which serves to save material. By movement of the carriage 74, the latch 26 can be pulled into the interior of the lock 20 to bring the latch 26 in the unlocked position and to allow opening of the door. For guiding a guide web 74c is formed on the carriage 74, which is guided in a guide slot of the lock housing. The interaction of the carriage 74 and the bolt 26 will be explained in more detail below in connection with FIG.

The electric motor 70 and a control device driving it are supplied by batteries which are accommodated in a battery box 41. The battery Case 41 has a removable flap, can be used by the batteries after opening the lock 20 and replaced. Alternatively, it is also possible to design the lock 20 so that the battery box 41 is inserted into the end plate 24. It can then be removed from the side of the end plate with the door open to replace the batteries. It is also conceivable that the battery box 41 remains in the lock 20, and the batteries can be removed or inserted through a corresponding flap or a closure cover in the end plate 24.

As in the first embodiment, a circuit board 40 is arranged in the lock 20, which includes the control device for the electric motor 70 and controls the functionality of the lock 20. Again, a touch switch 42 is provided, which in the simplest case can be designed as an electrode arranged on the door leaf. A touch of the touch switch 42 is detected by the arranged on the board 40 controller, for example, based on a change in capacitance of the touch switch 42nd

In the illustrated embodiment, it is provided to integrate the function of the touch switch 42 in a door knob or door handle. For this purpose, a square receptacle 50 is provided, on which a contact element, for example a contact tongue, is formed, which is connected to the control device on the circuit board 40. A square inserted into the square receptacle 50 is contacted via this contact element so that this or the knob or door handle placed on the square and arranged on the outside of the door leaf becomes the touch switch 42.

Another difference in the illustrated embodiment compared to the embodiment of FIGS. 1 to 6 lies in the recognition of the closed position of the door. In the first embodiment, this is done via the sensor 44th

(see Fig. 1), which detects a closed position of the door based on its positioning relative to the permanent magnet 46 embedded in the strike plate. The information from this sensor 44 is combined with the acceleration sensor 48 to determine the correct moment in which the door leaf rests flush in the door frame. This type of position detection would be possible in principle in the embodiment shown here. In the present case, a switch 43 is instead arranged in the region of the bolt 26, preferably mounted as shown directly on the board 40, which detects the position of the bolt 26 and emits a signal to the control device when the latch 26 at least partially herausge from the end plate 24 is withdrawn. Consequently, in this embodiment, not the closing position of the door is first detected and then the latch 26 partly passively on the permanent magnet 36, partly active via the drive in the opening 1 6 of the

Closing plate 14 retracted, but conversely first detected a passively caused by the permanent magnet movement of the bolt 26 in the opening 1 6 and this is interpreted as a signal for a door located in the closed position. This information can then be used to start the electric motor 26 in a rotational direction that pushes the latch 26 (further) out of the end plate 24. To open the door, the signal of the touch switch 42 - in the present case a doorknob or door handle - evaluated and the electric motor 70 operated in the reverse direction, so that the bolt 26 enters the lock housing 22 and the door releases. In the illustrated embodiment, the switch 43 is an electromechanical switch, for example a so-called microswitch, which mechanically scans the position of the bolt 26. Alternatively, for example, an electromagnetically based switch may be used, wherein a permanent magnet is arranged in the latch 26, which interacts with a reed contact, which is preferably arranged on the circuit board 40, or with a Hall sensor arranged there.

On the board 40, a button 45 is further arranged, which can be hidden behind the end plate 24 by means of an operating tool through an opening in the end plate 24 operated by the user. This button 45 can be occupied with several functions, which are distinguished from each other on the basis of the operating time. For example, it can be provided that a brief actuation of the button 45 resets the control device (reset function) if a malfunction has occurred.

A long-lasting pressing of the button 45, however, may be occupied by an on / off function with which the lock 20 can be turned on or off. Since the button 45 is accessible only when the door is open, it is ensured that a switch-off of the lock 20 is not in an Can take place in a state in which the door is closed. In addition, it may be provided to realize the switch-off function so that it is ensured before switching off that the latch 26 is in the fully retracted position. This can be done, for example, by a corresponding actuation of the electric motor 70. In the illustrated embodiment, a spring 27 is also provided, which is fastened on one side on the lock housing 22 and on the other side on the bolt 26. This spring ensures that the latch 26 is retracted into the end plate 24 when it is not in the region of the strike plate. The spring force of the spring 27 is designed so that it does not prevent the retraction of the bolt 26 into the opening 1 6 by the permanent magnet 36.

When the lock 20 or in a malfunction of the lock 20, caused for example by emptied batteries, an emergency opening option is also provided via a manual operation by means of the doorknob or the door handle. For this purpose, the square socket 50 is formed in a known manner in a rotatably mounted nut 51, which is held in the illustrated basic position by means of a coil spring, not shown here. From this basic position, the nut 51 can be rotated by actuating the door knob or door handle on the square socket 50 in a clockwise direction (based on the illustration of FIGS. 4 and 6). On the nut 51, a pivot arm 53 is arranged, which engages with rotation of the nut 51 in the latch 26 and feeds it into the lock housing 22. When the lock 20 is switched off, it can thus be actuated in a known manual manner via the door knob or door handle.

In alternative embodiments of the lock 20, a different type of operating option for the lock 20 may be provided instead of the push-button 45. For example, a flush-mounted key switch can be arranged in the end plate 24, the reset function or the Ein-

/ Switching off the lock protected against unauthorized operation allows. It is also conceivable to design a remote control option for the lock 20, preferably with a short-range optical or radio-based transmission path. The lock 20 can then be operated, for example, via an infrared interface or a short-range radio link such as the Bluetooth radio link by means of a remote control.

A commercially available mobile telephone, in particular a so-called smartphone, can advantageously be used as the remote control. Speaking software ("App") is set up for communication with the lock 20. Due to the extended operating options via a screen of the mobile phone, additional functions can be conveniently operated at the lock 20, for example, a timer may be provided which controls the electrical operation of the lock 20 only within certain time intervals (for example, during the day, but not in the evening or weekdays, but not on weekends) unlocks.

Furthermore, an RFI D (Radio Frequency Identification) receiver can be arranged in the lock 20, which is basically or within possibly predetermined

Periods of an electrically assisted opening of the lock permits only when a matched and unlocked RFI D transponder is near the lock 20 or is activated in the vicinity of the lock 20. In this way, the lock 20 can be used in the context of an electronically controlled locking system.

The interaction of the carriage 74 and the bolt 26 in various operating states of the lock 20 is shown in FIGS. 10A-C. For the sake of clarity, the images depict only the latch 26, the carriage 74 and a section of the end plate 24, respectively. The illustrations are each plan views of the in Fig. 8 below and not visible in Figs. 7 and 9 side.

Fig. 10A initially shows the normal state when the door is open. The bolt 26 is completely retracted into the lock housing 22, so does not protrude beyond the plane of the end plate 24. The carriage 74 is not fixedly coupled to the latch 26, but can move within a certain amount of travel without the latch 26 being moved. For this purpose, the carriage 74 is provided on its side facing the end plate 24 with a laterally projecting head 74a, which is located in a corresponding recess 26d of the bolt 26. The recess 26d is longer in the direction of movement of the latch 26 and the carriage 74 than the head 74a is high. This difference allows movement of the head 74a within the recess 26d. Either when the head 74 a rests with its front surface on the bolt 26 or it rests with its laterally projecting undercut surfaces on the bolt 26, he moves this in the appropriate direction. On the side opposite to the end plate 24, the latch 26 merges into a pin-shaped section 26b, which has a groove 26c at its rear end has, in which the carriage 74 is slidably mounted with a correspondingly shaped spring.

In Fig. 10B, the closed state of the door is shown. In this state, the latch 26 is retracted by the permanent magnet, not shown here, into the opening 16 of the strike plate. The carriage 74 has not changed its position relative to the situation illustrated in FIG. 10A, hereinafter also referred to as the first position. As a result of the movement of the bolt 26, the head 74a now lies against the bolt 26 with its lateral projections.

In Fig. 1C, the unlocked position is shown. To release the door, the carriage 74 moves from the first position away from the end plate 24 in a second position, thereby pulling the latch 26 in the lock housing 22 a. Subsequently, the carriage 74 is again moved to the first position shown in FIG. 10A, so that the latch 26 is released and the door is ready for a next closing operation.

Another embodiment of a lock 20, which represents a further development of the lock according to FIG. 7-1 0, is shown in FIGS. 11 and 12. Like reference numerals in these figures again denote the same or equivalent elements as in the previously described figures.

1 1 A and 1 2A each show a section of the lock 20 in a plan view of one side of the lock 20 with the side cover open. FIGS. 11B and 1B show the lock 20 in a sectional view along the section line A-A indicated in FIGS. 11A and 1 2A, respectively. Figures 1 1 C and 1 2C are plan views analogous to Figures 1 1 A, 1 2A, but on the opposite side of the lock 20. In Figures 1 1 D and 12D, the latch 26, the carriage 74 and the Electric motor 70 in the same position, which also have these elements in Figs. 1 1 C, 1 2C, shown separately.

The view of FIG. 1 1 C and 1 2C shows the guidance of the bolt 26 and the carriage 74 in guide slots 23 which are formed in the lock housing 22. The carriage 74 has for this purpose the guide web 74c, which can also be seen in FIG. The bolt 26 has two guide webs not marked with a reference numeral.

In the case of the lock 20 of FIGS. 11 and 12, an additional operating state is provided, which adjoins the closing process shown in FIG. 10B. closes. The locked state shown in Fig. 10B is first shown again in Fig. 1 1 AD for this embodiment.

Starting from this state, the carriage 74 is moved by the electric motor 70 in the direction of the end plate 24 in a third position and thus presses the latch 26 actively into the opening 1 6 inside. The state achieved thereby is indicated in FIGS. 1 2A-D.

If the latch 26 is chamfered in the manner of a trap, the pushing in leads to an active closing of the door, in which the door leaf is pressed against the door seal. Such a closing operation may be useful, for example, to prevent a train through the gap between the door frame and door, o- to close a door particularly soundproof. It can be provided to move the carriage 74 back into the first position shown in FIGS. 11A-D or FIG. 10B after the latch 26 has been actively pushed in. This has the advantage that, when the door is subsequently opened, the position of the carriage 74 shown in FIG. 10C is reached more quickly. Conversely, if it is provided to leave the carriage 74 in the position of active pushing in, this advantageously leads to a more secure closing state of the door lock 20. The latter applies in particular when the electric motor 70 is self-locking, for example by the integrated gear stage comprising a worm drive. Alternatively, it can be achieved by other means that the carriage 74 and thus the latch 26 remains secured in the assumed position. For example, an electromagnetically actuated locking mechanism may be provided for the latch 26 and / or the carriage 74.

In order to drive the carriage 74 in the first and second and possibly third position, a position detection of the carriage 74 is advantageous.

In one embodiment of the lock 20, the position detection can take place indirectly via the detection of an operating current of the electric motor 70. In particular, when the position shown in FIG. 10C, in which the carriage 74 experiences a mechanical stop, and the push-back position of FIGS. 1 2A-D can be well detected in this way, as the carriage 74 moves against the mechanical Stop the operating current of the electric motor increases significantly. However, the first position shown in FIGS. 10A, 10B and 11 AD can also be detected in this way if an additional mechanical resistance is provided at the position of the carriage 74 to be assumed, which must be overcome by the carriage 74 at this position. Such an additional resistance can be achieved for example by a corresponding elevations and depressions on the displacement path, which are formed on the carriage 74 or on an element relative to which the carriage 74 moves. In the example shown in FIGS. 11 and 12, such an increase 74d is formed on the carriage 74 in the form of an issued and therefore elastic bridge. Upon movement of the carriage 74, the raised portion 74d in the first position of the carriage 74 comes into contact with the housing of the electric motor 70, thereby increasing the moving resistance of the carriage. The change of the moving resistance of the carriage 74 is reflected in the motor current of the electric motor 70, whereby the first position can be detected.

Alternatively, a detection of the position of the carriage 74 via sensors, for example via mechanical switches or buttons and / or a combination of co-moving permanent magnet and fixed Magets netsensor (reed contact or Hall sensor) done. As a further alternative, the electric motor 70 may be equipped with a rotation angle encoder, so that, starting from a known reference position, which is identified, for example, via a current change when approaching a mechanical stop, for example in the second position of the carriage 74, determines the respectively current position become.

reference numeral

10 door frame

12 door leaf

14 strike plate

1 6 opening

18 use

20 Castle

22 lock housing

23 guide slot

24 end plate

26 bars

26a anchor

26b pin-like portion of the bolt 26c groove

26d recess

27 spring

28 bobbins

30 coil

32, 34, 36, 38 permanent magnet 40 board

41 battery box

42 touch switch

43 switches

44 sensor

45 push buttons

46 permanent magnet

48 acceleration sensor

50 square shot

51 nut

52 metal foil

53 swivel arm

54 coating

56 square

58 drawstring 60 unlocking tool 62 permanent magnet 70 electric motor

72 gear

74 sleds

74a head

74b rack

74c guide bar

Claims

claims

Locking system having a lock plate (14) fixedly arranged on a first building or furniture part (10) and a lock (20) fixedly attached to a second building or furniture part (12) and having a latch (26) between a locking position, in which it locks on the strike plate (14) and is movable in an unlocking position, characterized in that the latch (26) is designed as a latch in order to move from the unlocked position to the locked position, and in that the lock (20) has a having electrical drive, which cooperates with the latch to move it from the locking position to the unlocked position.

A locking system according to claim 1, wherein the electric drive includes an electric motor (70).

A locking system according to claim 2, wherein the electric motor (70) acts on a carriage (74) which is preferably slidably guided parallel to the latch (26) and which is coupled to the latch (26).

Locking system according to claim 3, in which the carriage (74) and the bolt (26) are coupled to one another in the direction of their guidance, such that in a first position of the carriage (74) the bolt (74) 26) can be located both in the unlocked position, as well as in the locked position, and that in a second position of the carriage (74), the latch (26) is in the unlocked position.

A locking system according to claim 4, wherein in a third position of the carriage (74) the latch (26) is in the locking position.

Locking system according to claim 1, wherein the electric drive comprises an electromagnet with a coil (30) whose axis is preferably oriented parallel to the direction of movement of the bolt (26) and which cooperates with an armature (26a) rigidly connected to the bolt.

7. Locking system according to claim 6, wherein the armature (26 a) has two from each other to each other arranged permanent magnets (32, 34) of de nen is located outside of the coil (30) when the bolt (26) in the Locking position is located, and the other is located outside the coil (30) when the latch (26) is in the unlocked position.

8. Locking system according to one of claims 1 to 7, wherein on the side of the striking plate (14) and / or on the side of the lock (20), a permanent magnet (36, 38) is arranged, the latch (26) magnetically in Tightening the direction of the locking position.

9. Locking system according to one of claims 1 to 8, wherein the bolt (26) is resiliently biased towards one of its end positions, in particular by means of a spring (27).

10. Locking system according to one of claims 1 to 9, with a sensor device (44, 48) for detecting a relative position of the first and second building or furniture parts (10, 12) in which these parts by the bolt (26) are locked together and for controlling the electric drive in the sense of a lock when this relative position is detected.

1 1. A locking system according to claim 10, wherein the sensor means includes a sensor (44) for detecting a magnetic field.

12. Locking system according to claim 10 or 1 1, wherein the sensor device comprises an acceleration sensor (48).

13. Locking system according to one of claims 10 to 12, wherein the sensor device comprises a switch for detecting a position of the bolt (26).

14. Locking system according to one of claims 1 to 13, with a scarf ter (42) for controlling the electric drive for unlocking.

15. Locking system according to claim 14, wherein the switch (42) is a touch sensor, in particular a touch sensor, which detects a touch of a door handle.

6. Locking system according to claim 14 or 15, wherein the bolt (26) only via the switch (42) is actuated.