DE102019107282A1 - Door lock operating device for operating a door lock and alarm system with such a door lock operating device - Google Patents

Abstract

The invention relates to a door lock operating device (10) for operating a door lock, comprising a housing (12) which has an interface side for mounting on a door (1), an output element (16) which can interact with the door lock, a drive device (14), which is in operative connection with the output element (16), a controller (22) for controlling the operation of the drive device (14), a battery compartment (18) for receiving at least one battery (20) which drives the drive device (14) and supplies the controller (22), a battery cover (26) attached to the housing (12), the battery cover (26) being removable to allow access to the battery compartment (18), and a locking mechanism (32, 36) for locking of the battery cover (26) on the housing (12), the locking mechanism (32, 36) being accessible only from the interface side of the housing (12). The invention also relates to an alarm system comprising a central unit and a door lock operating device (10) according to any one of the preceding claims, the central unit being adapted to trigger an alarm when the signals from the accelerometer indicate that the door lock operating device (10 ) is manipulated.

Description

The invention relates to a door lock operating device for operating a door lock. Such door lock actuators are sometimes referred to as “smart locks” and allow the bolt of a door lock to be opened and closed electrically. The term “smartlock” is used in the following as a synonym for such a door lock actuating device.

Such a Smartlock generally takes on the function of a mechanical key. It enables the door lock to be operated only by authorized persons, e.g. Those who have a transponder or a smartphone with an app connected to the Smartlock, and it moves a bolt of the door lock from the closed position to an open position so that the door can be opened, or from the open to the closed position, so that the door is locked.

A typical Smartlock consists of an electric motor that supplies the mechanical power to operate the bolt, batteries that supply the electrical power to operate the motor, and a battery-powered controller for controlling the motor operation. The control system receives an authorization signal which indicates that an authorized person is near the door equipped with the Smartlock.

In order to guarantee a high level of security, certain measures should be taken on both a mechanical and an electronic level to prevent unauthorized persons from operating the Smartlock and / or triggering an opening process. Some of the security measures are clearly on the electronic level (e.g. encryption of the signals that are exchanged e.g. between a smartphone and the controller), while other measures (e.g. the connection of the Smartlock to the door itself) are purely mechanical. But there are also security measures that affect both mechanical and electronic aspects, such as Measures that prevent unauthorized access to the interior of the Smartlock and thus prevent manipulation of electrical and electronic components.

The aim of the invention is to create a smartlock with an increased level of security.

For this purpose, the invention provides an intelligent lock for operating a door lock, which has a housing with an interface side for mounting on a door, an output element that is suitable for cooperation with the door lock, a drive device that is in operative connection with the output element, and comprises a controller for controlling the operation of the drive device, a battery compartment for accommodating at least one battery that supplies the drive device and the controller, a battery cover attached to the housing, the battery cover being removable to allow access to the battery compartment, and a locking mechanism for Locking the battery cover on the housing, the locking mechanism being accessible only from the interface side of the housing. The locking mechanism ensures that the battery cover cannot be easily removed from the housing to gain access to the interior of the smartlock. Rather, it is necessary to remove the entire Smartlock from the door before the battery cover can be opened.

According to one embodiment of the invention, the locking mechanism consists of a screw and a holding block connected to the battery cover, the screw going through the holding block. The screw provides a mechanically strong means of holding the battery cover in place.

The screw can extend through an opening in the support block that is closed in the circumferential direction. In other words, the support block has a through hole through which the screw extends. This makes it impossible to pull the battery cover off the screw in the radial direction or to loosen it.

Preferably, the screw has a thread that is screwed into the housing. This also allows the screw to be used to hold the components of the housing together.

Preferably the support block is molded integrally with the battery lid, e.g. by injection molding the battery cover, which is made of a plastic material.

According to one embodiment of the invention, the screw is screwed into the carrier block. The support block offers enough material, especially seen in the axial direction of the screw, to establish a mechanically firm connection with the screw.

The screw preferably has a stepped thread with a first diameter on the screw tip and a second, larger diameter on the shaft of the screw, the thread with the first diameter engaging the housing and the thread with the second diameter engaging the support block. This special construction of the screw allows the screw to be both to mechanically connect with the support block of the battery cover as well as with the housing in a single step.

According to one embodiment of the invention, the battery cover is curved and consists of two locking tongues at opposite ends, the locking tongues engaging behind the edges of the housing. The locking tabs create a mechanical connection between the ends of the battery cover and the housing so that the battery compartment cannot be broken open with a tool.

Preferably, each of the tabs overlaps the housing by approximately 2% of the circumference of the smartlock.

The mechanical connection is particularly strong when the locking tabs engaging behind the edges of the housing extend over the entire width of the battery cover.

According to a preferred embodiment, an accelerometer is provided in the housing, in particular on a main board on which the electronic components of the control are mounted. The accelerometer can be used to detect unusual movements of the smartlock, which could indicate that someone is trying to tamper with the smartlock.

In order to be able to add the accelerometer to already existing Smartlocks, the accelerometer can be mounted on an additional board, which is connected to a main board of the controller. The connection between the auxiliary board and the main board can be established by means of a plug connection, so that installation is easy.

The signals from the accelerometer can be sent via a communication module so that the accelerometer can be integrated into an alarm system.

• - eine Drehung des Smartlock um eine horizontale Achse,
• - ein Kippen des Smartlocks um eine Achse, die senkrecht zur horizontalen Achse steht,
• - Drehung der Tür, an der das intelligente Schloss montiert ist,
• - Vibrationen, die aus einer Interaktion mit dem Smartlock resultieren,
• - Stöße, die aus einer Interaktion mit der Tür resultieren,
• - Anschlag der Tür in offener Position,
• - Schließen der Tür,
• - eine vordefinierte Abfolge von Klopfgeräuschen an der Tür oder an dem intelligenten Schloss.

The signals sent by the communication module can indicate at least one of the following situations:

• - one rotation of the Smartlock around a horizontal axis,
• - tilting the Smartlock around an axis that is perpendicular to the horizontal axis,
• - rotation of the door on which the smart lock is mounted,
• - vibrations resulting from an interaction with the Smartlock,
• - bumps resulting from an interaction with the door,
• - door stop in open position,
• - closing the door,
• - a predefined sequence of knocking noises on the door or on the intelligent lock.

The alarm system can consist of a central unit and a smartlock as described above, the central unit being adapted to trigger an alarm when the signals from the accelerometer indicate that the smartlock is being tampered with.

According to one aspect of the invention, a smartlock is provided which is suitable for mounting on a door and comprises a battery, an accelerometer and an RF module, which are each located in a housing, the housing being arranged so that access to the Battery, accelerometer, and RF module while the smartlock is mounted on a door, the accelerometer and RF module being arranged to provide an RF tampering alarm signal when the smartlock is removed from the door becomes.

The signals received by the accelerometer can be used to determine if the smart lock is unexpectedly removed from the door, as could be the case if the door lock is tampered with. This can lead to the Smartlock being rotated, e.g. to release the door lock from the carrier. This could lead to the intelligent lock being moved axially away from the door or being rotated about the plane of the door, which e.g. could then be the case when someone tries to release the lock from the door or the carrier. In preferred embodiments, one or more accelerometers are used to sense motion in each of these axes. The detection of such a movement of the smartlock can indicate that someone is trying to gain access to the side of the smartlock that is normally rigidly connected to the wearer.

If an authorized user intends to replace the Smartlock or exchange the batteries, the alarm system is informed in this regard that signals which are suspicious when the alarm system is armed will not trigger an alarm.

This protects the Smartlock from manipulation. For example, trying to remove the lock from the door or carrier be recognized. It is also possible to detect an attempt to drill open the lock.

The accelerometer can also detect bumps on the door, e.g. an attempt by a burglar to break into the locked door.

The signals from the acceleration sensor can also be used to detect whether the bolt should be moved into the locked position after opening. If the door lock has been opened and the door has not been moved for a certain period of time (which can be detected with the accelerometer), the controller can operate the drive device again so that the door lock is closed.

It is also possible to use the signal from the acceleration sensor to prevent the door lock from being switched from an open to a locked state while the door is moving.

• - 1 schematisch in einem Querschnitt eine Tür mit einer Türschlossbetätigungsvorrichtung,
• - 2 einen erfindungsgemäßen Querschnitt durch eine Türschlossbetätigungsvorrichtung,
• - 3 einen Querschnitt der Türschlossbetätigungsvorrichtung von 2 in einer Ansicht, die der von 1 ähnlich ist,
• - 4 zeigt Details des Verriegelungsmechanismus zur Verriegelung des Batteriedeckels am Gehäuse,
• - 5 zeigt die im Verriegelungsmechanismus verwendete Schraube,
• - 6 zeigt den Batteriedeckel in einer perspektivischen Ansicht, und
• - 7 zeigt eine Alarmanlage mit der Türschlossbetätigungsvorrichtung, wie in den 1 bis 6 dargestellt.

The invention will now be described with reference to the accompanying drawings. In these show:

• - 1 schematically in a cross section a door with a door lock actuating device,
• - 2 a cross section according to the invention through a door lock operating device,
• - 3 a cross section of the door lock actuator of FIG 2 in a view similar to that of 1 is similar
• - 4th shows details of the locking mechanism for locking the battery cover to the housing,
• - 5 shows the screw used in the locking mechanism,
• - 6th shows the battery cover in a perspective view, and
• - 7th FIG. 13 shows an alarm system with the door lock operating device as in FIG 1 to 6th shown.

1 shows schematically a door 1 that with a latch 2 is provided. The latch 2 can with the help of a door lock operator 10 (hereinafter referred to as "Smartlock") between a closed or locked position (in which it protrudes outwards over the respective front side of the door) and an open or unlocked position (in which it is retracted into the door so that it does not over the front side protrudes).

The smartlock 10 consists of a housing 12th mechanically on a carrier 3 is mounted. The carrier 3 is with the door 1 screwed or otherwise mechanically connected.

The side of the case that attaches to carrier 3 is called the interface side of the housing.

Inside the case 12th is a drive device 14th (here in the form of an electric motor) arranged with an output element 16 is in operative connection. The output element 16 is with the bolt 2 operatively connected, so that a rotation of the output element 16 moves the bolt from the locking position to the open position and vice versa.

Inside the case 12th becomes a battery compartment 18th formed in which a battery 20th is arranged. The battery 20th supplies the electrical energy for the operation of the drive element 14th .

Inside the case 12th is also a controller 22nd to control the operation of the drive device 14th arranged. The ones for the operation of the controller 22nd required energy is also taken from the battery 20th provided.

On the one by the door 1 the opposite side is the Smartlock 10 with one control element 24 (e.g. a rotary knob) that is mechanically connected to the output element 16 and if necessary (e.g. if the drive unit fails or if there is no electrical energy from the batteries 20th ) enables rotation of the output element.

The 2 to 6th show details of the construction of the smartlock according to the invention 10 .

One element of the smartlock according to the invention is a tamper-proof battery cover 26th covering the outside wall of the battery compartment 18th forms.

The battery cover 26th has the shape of an approximately semicircular shell and has two locking tabs at the opposite ends 28 Mistake. As in 6th can be seen, each locking tab extends 28 across the entire width of the battery cover 26th .

As in particular in 2 can be seen, the locking tabs engage 28 when the battery cover 26th on the housing 12th mounted behind the edges of the case 12th . The locking tabs 28 are relatively long in the circumferential direction, so there is a significant overlap between the locking tabs 28 and the case 12th gives.

The locking tabs 28 reach so far under the housing 12th that there is never a gap between the battery cover 26th and the case 12th if someone tries to break the battery cover, even if the battery cover is 26th themselves sags a little if stressed trying to break open.

As the locking tabs 28 across the entire width of the battery cover 28 extend, a gap is avoided in the corners while the battery cover 26th sags.

It can also be seen that the free ends of the locking tabs 28 at a short distance from an inner wall 30th are arranged that have a stop for the locking tabs 28 if someone tries to push the entire battery cover into the housing.

The battery cover 26th is on its inner surface approximately in the middle between the locking tabs 28 with a support block 32 Mistake.

As in particular in the 3 and 4th seen is the support block 32 with an opening 34 provided through which a screw 36 extends.

The screw 36 has a stepped thread on its front part, namely a thread 38 with a first diameter part 38 and a second diameter part 40 . The second diameter is larger than the first diameter.

Examples of the diameters can be 2 mm for the first diameter part 38 and 3 mm for the second diameter part 40 be.

The threads 38 , 40 are arranged so that the first diameter part 38 in the housing 12th intervenes (see in particular 4th ), while the second diameter part 40 in the support block 32 is screwed in. To this end is the opening 34 in the support block 32 of the battery cover 26th with a reduced diameter at that of the head of the screw 36 the distal end.

The screw 36 thus mechanically engages both in the housing 12th as well as in the battery cover 26th one.

As an alternative to a step screw, a screw with a continuous thread could be used.

The carrier block 32 forms together with the screw 36 a locking mechanism that is only accessible from the interface side of the housing 12th accessible (the side of the housing that is used for mounting on the carrier 3 suitable is). This is especially true in 3 to recognize. This will cause the battery compartment to open 18th effectively prevented as long as the Smartlock 10 properly at the door 1 is mounted.

This protects the Smartlock from attempted tampering in which the power supply to the lock is removed without the Smartlock being removed from the door beforehand.

The control 22nd is on a circuit board 42 mounted in the housing 12th is arranged. The walls 30th can for mounting the circuit board 42 inside the case 12th be used.

PCB 42 also carries an accelerometer 46 . Also on the PCB 42 a communication module 48 (also called "RF module") arranged.

Alternatively, separate boards can be used, for example a main board for the controller 22nd and an auxiliary board for the accelerometer and the RF module.

With the communication module 48 can use the accelerometer 46 received signals are sent to an alarm system. The alarm system can include other components such as glass break sensors, window sensors and door sensors.

An example of such an alarm system is in 7th shown.

In 7th denotes the code number 50 the living space of an apartment or house. The door 1 provides access to the living space 50 . The door is with a smart lock 10 fitted.

There is a central unit in the apartment or house 52 provided that is part of an alarm system. Additional burglar alarm devices, especially magnetic sensors that send a signal when a door or window is opened, or a glass break sensor are part of the alarm system.

The central unit 52 has a communication module 54 , the RF signals from the Smartlock 10 can receive, in particular the signals of the acceleration sensor. The central unit 52 can also send signals to the Smartlock 10 send to the operation of the drive unit 14th to control.

The central unit 52 also contains an evaluation unit 56 for evaluating the Smartlock 10 received acceleration signals. Depending on the result of the evaluation, several different situations or occurrences can be recognized, and the central unit 52 can react with a certain reaction.

The central unit 52 also includes an external communication facility 58 , about the one Communication with an external monitoring station 60 (Operational control) takes place.

In general, the evaluation module 56 used to distinguish between a variety of different situations.

A first situation is that someone has the smart lock 10 from door 1 removed without prior approval.

Signals indicative of such an attempt include a rotation of the smartlock about a horizontal central axis of the smartlock and a tilting of the smartlock about a horizontal axis that is perpendicular to the central axis.

Usually the Smartlock 10 at door 1 by means of a bayonet connection between the Smartlock 10 and carrier 3 mounted with the bayonet connection one rotation of the Smartlock 10 around the central axis of the Smartlock, which is perpendicular to the door. To remove the Smartlock from the door, turn it in the opposite direction.

Should the signals from the accelerometer indicate a rotation of the Smartlock 10 around an axis that is horizontal and perpendicular to the door 1 runs, this is an indication that the Smartlock 10 rotated so that it is from the carrier 3 and with it from the door 1 Will get removed. If there is a rotation around a horizontal axis that is perpendicular to the first horizontal axis, this is an indication that the Smartlock 10 from door 1 removed because the Smartlock 10 in a correctly assembled state can only be rotated around a vertical axis, which is the hinge axis of the door 1 coincides.

When the central unit 52 detects that the Smartlock 10 is rotated or tilted in a manner that should not occur during normal operation, an alarm can be triggered. The alarm can send a notification to the monitoring station 60 and / or the activation of a siren, a loudspeaker and / or an alarm lamp.

The alarm can also put the entire alarm system in a higher alert state. A microphone and / or a camera can be used in this state 62 can be activated, and the information recorded can either be sent to the operations center 60 be transmitted to decide whether to notify the police or send a security guard, and / or to the user so that he can see what is going on, for example on his smartphone.

The information recorded by the microphone and / or the camera can also be obtained from the evaluation module 56 be evaluated to detect an intrusion or not. This reduces the number of false positives.

Should a user intend to remove the batteries 20th a maintenance signal is sent to the central unit 52 to send. The maintenance signal can either come from the monitoring station 60 or by the user directly at the central unit 52 triggered, for example by entering a corresponding PIN code. Then the removal of the Smartlock 10 from door 1 authorized without triggering an alarm.

The signals sent by the accelerometer can also be used to detect other attempts at tampering with the Smartlock 10 and / or door 1 be used. For example, vibrations that result from an interaction with the door, for example when attempting to break in, can be detected and trigger an alarm. Furthermore, vibrations resulting from an interaction with the smartlock and / or the door can indicate that someone is trying to drill a hole in the door and / or the smartlock. In this case an alarm is also triggered.

The signals received by the accelerometer can also help improve the functioning of the smartlock 10 be used.

It is known that a smartlock is the latch 2 the door 1 can move from an unlocked to a locked position after a predefined period of time after opening the door. The signals received by the accelerometer can either increase this amount of time or prevent Smartlock from occurring 10 the latch 2 locked as long as the door is moved. The locking of the latch 2 can also be prevented if the accelerometer signals indicate that the door has stopped in an open position.

The central unit 52 can also ensure that the smart lock 10 the latch 2 moved to a locked position when the signals received from the accelerometer indicate that contact has been made between the door and the door frame and the door has subsequently remained in a stationary state. Then automatic locking of the door can be initiated.

The signals received from the accelerometer can also be used to "override" an automatic locking sequence implemented in the Smartlock. It is known that the Smartlock automatically moves the bolt from an unlocked to a locked position at a predetermined point in time after unlocking (eg 5 seconds). The central unit 52 may generate a delay signal that increases this amount of time as long as the signals received from the accelerometer indicate that the door is either still moving or that the door has stalled in an open position. In either case, there is little point in moving the bolt to a locked position.

The signals received from the accelerometer can also be used to lock the Smartlock 10 very convenient to lock. It is possible for a user in the central unit 52 stores a specific sequence of knocking noises on the door or on the Smartlock. If the central unit receives signals from the accelerometer that correspond to this knocking sequence, after it has previously received signals that indicate that the door has been closed, the Smartlock is activated 10 ordered, bolt 2 to move to the locking position. It is possible for a user to close the door and knock on the door from the inside or outside with the predefined sequence in order to lock the door without any further steps.

Claims (15)

Door lock actuating device (10) for actuating a door lock, comprising a housing (12) with an interface side for mounting on a door (1), an output element (16) which can interact with the door lock, a drive device (14) which can interact with the output element (16) is in operative connection, a controller (22) for controlling the operation of the drive device (14), a battery compartment (18) for receiving at least one battery (20) which supplies the drive device (14) and the controller (22), a battery cover (26) fastened to the housing (12), the battery cover (26) being removable to allow access to the battery compartment (18), and a locking mechanism (32, 36) for locking the battery cover (26) to the housing ( 12), the locking mechanism (32, 36) being accessible only from the interface side of the housing (12). Door lock operating device (10) according to Claim 1 , wherein the locking mechanism comprises a screw (36) and a carrier block (32) connected to the battery cover (26), the screw (36) extending through the carrier block (32), in particular through an opening (34) closed in the circumferential direction . Door lock operating device (10) according to Claim 2 wherein the screw (36) has a thread (38) which is screwed into the housing (12). Door lock operating device (10) according to Claim 2 or 3 , wherein the carrier block (32) is formed in one piece with the battery cover (26). Door lock operating device (10) according to Claim 4 wherein the screw (36) is screwed into the support block (32). Door lock operating device (10) according to one of the Claims 2 to 5 , wherein the screw (36) has a stepped thread (38, 40) with a first diameter at the tip of the screw and a second, larger diameter on the shaft of the screw, the thread (38) having the first diameter in the housing ( 12) and the thread (40) engages with the second diameter in the support block (32). A door lock actuator (10) of any preceding claim, wherein the battery cover (26) is curved and has two locking tabs (28) at opposite ends, the locking tabs (28) engaging behind the edges of the housing (12). Door lock operating device (10) according to Claim 7 wherein the locking tabs (28) reaching behind the edges of the housing (12) extend over the entire width of the battery cover (26). The door lock operating device (10) of any preceding claim, wherein an accelerometer (46) is provided in the housing (12). Door lock operating device (10) according to Claim 9 wherein the accelerometer (46) is mounted on an auxiliary circuit board which is connected to a main circuit board (42) of the controller (22). Door lock operating device (10) according to Claim 10 , in which the auxiliary board is connected to the main board (42) via a plug connection. Door lock operating device (10) according to one of the Claims 9 to 11 wherein a communication module (48) is provided for sending signals provided by the accelerometer (46). Door lock operating device (10) according to Claim 12 , whereby the signals indicate at least one of the following situations: - a rotation of the intelligent lock around a horizontal axis, - a tilting of the Smartlock around an axis that is perpendicular to the horizontal axis, - Rotation of the door on which the intelligent lock is mounted, - vibrations resulting from an interaction with the Smartlock, - shocks resulting from an interaction with the door, - stop of the door in the open position, - closing the door, - a predefined sequence of knocking noises on the door or on the intelligent lock. Alarm system with a central unit and a door lock operating device (10) according to any one of the preceding claims, wherein the central unit is adapted to trigger an alarm if the signals of the accelerometer indicate that the door lock operating device (10) is being tampered with. Intelligent lock (10), which is suitable for mounting on a door (1), with a battery (20), an accelerometer (46) and an RF module (48), which are each located in a housing (12), wherein the housing (12) is arranged to prevent access to the battery (20), the accelerometer (46) and an RF module (48) while the smart lock (10) is mounted on a door (1) wherein the accelerometer (46) and the RF module (48) are arranged to provide an RF tampering alarm signal when the smart lock (10) is removed from the door (1).

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