Door lock with sensor device and push button on circuit board

Abstract

The invention relates to a door lock (S) for a door (T) or a window or the like, with a lock housing, wherein movable gear elements (G) and a movable bolt element or several movable bolt elements are mounted in the lock housing, and a sensor device (1) arranged on a circuit board (P), wherein the sensor device (1) has at least one optical sensor (2) which has a light barrier with a beam path.The sensor device (1) comprises a bearing device (3) attached to the circuit board (P), on which a probe (4) having a release section (41) and a probe head (42) is movably mounted, the probe head extending transversely to the circuit board (P) up to one of the movable gear elements (G), or the movable locking element or one of the movable locking elements in order to detect their position by making the probe (4) movable by applying pressure to the probe head (42) between a first position in which the release section (41) engages in the beam path of the optical sensor (2) and a second position in which the release section (41) releases the beam path of the optical sensor (2).

Description

[0001] The present invention relates to a door lock according to the features of the preamble of claim 1 and a method according to claim 15.

[0002] Document EP 2 924 201 A1 describes a door lock with a lock housing containing a locking mechanism. A circuit board is mounted in the door strike plate, on which several optical sensors are arranged to detect changes in the position of movable gear and bolt elements of the locking mechanism. The movable gear and bolt elements of the locking mechanism are equipped with switching flags that interact with the associated optical sensors. When a gear or bolt element of the locking mechanism moves, the switching flag attached to it enters the light path of the associated optical sensor, thereby detecting the change in position of the gear or bolt element of the locking mechanism.

[0003] A disadvantage here is that the shift flags must be mounted very precisely on the respective gearbox and locking elements to prevent unwanted collisions with the optical sensors when the gearbox and locking elements are installed. Furthermore, manufacturing is complex, as the shift flags can be damaged, for example by bending, when the gearbox and locking elements are installed in the lock housing.

[0004] The object of the present invention is to provide a door lock which includes a sensor device for detecting the position of the movable gear elements of the lock mechanism and which is compact in design and, in particular, requires as few components as possible. In particular, upgrading or retrofitting a door lock with sensors should be easily possible.

[0005] This problem is solved according to the invention by a door lock according to the features of claim 1, and a method with the features of claim 15.

[0006] According to the invention, a door lock for a door or window or the like is proposed, comprising a lock housing with a lock top and a lock bottom arranged opposite it, wherein movable gear elements and a movable bolt element or several movable bolt elements are mounted in the lock housing, and a sensor device arranged on a circuit board, wherein the circuit board is arranged within the lock housing parallel to the lock top and / or the lock bottom and the movable gear elements and / or the movable bolt element or the several movable bolt elements are movable parallel to the circuit board, wherein the sensor device has at least one optical sensor which has a light barrier with a beam path.

[0007] Essentially, the sensor device comprises a bearing assembly attached to the circuit board, on which a probe, having a release section and a probe head, is movably mounted, the probe head extending transversely to the circuit board up to one of the movable gear elements, or the movable locking element or one of the movable locking elements in order to detect their position by moving the probe head between a first position, in which the release section engages the beam path of the optical sensor, and a second position, in which the release section releases the beam path of the optical sensor.

[0008] According to the invention, the probe extends from the circuit board to the component to be detected. This allows the probe to directly detect any movement of the component. Preferably, the probe interacts directly with the component or is in direct contact with it at least in one position. In particular, this enables detection of the component without the need for a switching flag or without requiring any changes to the shape and / or dimensions of the component to be detected.

[0009] Another advantage is that the circuit board holds all the sensors, meaning that all sensors are arranged on a single board, which simplifies the installation or upgrading of the lock with sensors.

[0010] In particular, a sensor device is understood to be a device for evaluating sensor signals and the corresponding sensors. The sensor device may include a logic circuit or a microprocessor for evaluating the sensor signals, as well as an interface for forwarding the evaluated signals. The sensor device is particularly well-suited for mounting on a circuit board. The logic circuit or microprocessor may have multiple inputs connected to the sensors and corresponding outputs for forwarding the sensor signals. The interface may be designed as a bus interface or as a discrete interface.

[0011] The gear components to be detected may include one or more elements from the following list: gear slide, lock follower, outer follower, center follower, inner follower, follower arm of the outer follower, follower arm of the inner follower, lock cylinder, locking bolt of the lock cylinder, coupling slide for engaging the inner or outer follower to the center follower by means of the lock cylinder, changeover lever for retracting one or more locking elements by means of the lock cylinder, output element of a motor drive, latch release, bolt release, or similar. This list is not exhaustive.

[0012] The locking elements to be detected may include one or more elements from the following list: lock bolt, which may be configured as a linearly movable bolt, a swing bolt, or a hook bolt; latch, which may be configured as a snap latch, a tilt latch, a roller latch, a cross latch, or a swing latch; auxiliary latch, which may be configured to trigger a self-locking mechanism or to lock the latch; deadbolt, upper locking bar, lower locking bar, connecting slides to which the upper or lower locking bar is connected, or similar components. This list is not exhaustive.

[0013] The lock top and / or bottom may be designed to be removable. In particular, the bottom of the lock runs parallel to and at a distance from the top. The lock housing may have a faceplate on its front. The faceplate may have one or more openings through which one or more of the locking bolts can pass.

[0014] In particular, the lock housing forms a receiving space for gear elements and / or locking elements.

[0015] According to the invention, the lock housing comprises a receiving space for the circuit board with the sensor device. The receiving space for the circuit board with the sensor device preferably extends below the lock top and directly adjoining the lock top and / or parallel to the lock top. Alternatively, the receiving space for the circuit board with the sensor device preferably extends above the lock bottom and directly adjoining the lock bottom and / or parallel to the lock bottom.

[0016] The optical sensor of at least one can be configured as a reflective or continuous light barrier. This provides a robust measuring method that can be encapsulated and is therefore insensitive to contamination. Furthermore, the optical sensor is stable over long periods and exhibits a constant switching point. Multiple sensors can also be used, with some having reflective light barriers and others having continuous light barriers.

[0017] It can be provided that the probe head is directly acted upon by the movable gear element or locking element to be detected, by the probe head being in direct contact with the movable gear element or locking element in the first position and the movable gear element or locking element acting upon the probe head in the direction of the circuit board, and that the movable gear element or locking element is disengaged from the probe head in the second position and the probe head protrudes into the range of motion of the movable gear element or locking element.

[0018] Preferably, the sensor device may have several sensors for detecting multiple movable gear elements and / or locking elements, and the circuit board may extend over a large area within the lock housing. The sensors may be arranged on the circuit board in such a way that the transverse pushbuttons or probe heads project directly into the movement range of the gear elements and / or locking elements to be detected. This allows the entire detection range to be covered by a single circuit board. In particular, no additional elements are required to bridge distances between the gear elements and / or locking elements to be detected and the sensors.

[0019] The sensor device may be designed to include a spring that presses the button towards its first position or towards its second position. This allows for a defined neutral position of the sensor.

[0020] In an advantageous embodiment, the sensor can be mounted on the bearing assembly so that it is linearly movable. This allows for a simple sensor design while ensuring reliable operation.

[0021] It may be provided that the storage device has a bearing plate which is provided with a through-hole through which the release section is guided.

[0022] Furthermore, it can be provided that a first end of the spring is attached to the bearing plate and a second end of the spring is attached to the probe head.

[0023] It may be provided that the spring is designed as a helical compression spring and surrounds the release section section by section.

[0024] In an advantageous embodiment, the sensor can be pivotably mounted on the bearing assembly. This allows for a compact, and in particular space-saving, sensor design with a large detection range. The detection range can be precisely defined according to the pivoting movement.

[0025] It may be provided that the button has a pin that is non-rotatably connected to the button and is rotatably mounted in a bearing hole of the bearing device.

[0026] Furthermore, the storage device may be designed to have a first system section and a second system section that define a rotation range of the probe. In particular, this allows a specific angular range to be defined as the swivel range.

[0027] In an advantageous embodiment, the button can be designed as a two-armed lever, wherein the distance between the probe head and the pin is smaller than the distance between the release section and the pin.

[0028] Advantageously, the sensor device may include an evaluation unit arranged on the circuit board, in particular with a microprocessor, to evaluate the signals of the sensor or sensors and to direct them to a control unit located outside the lock housing.

[0029] The invention further comprises a method for upgrading a door lock with a sensor device, comprising the steps of: - Providing a door lock with a lock housing comprising a lock top and a lock bottom arranged opposite, wherein movable gear elements and a movable bolt element or several movable bolt elements are mounted in the lock housing, - Providing a circuit board with a sensor device, wherein the sensor device comprises at least one optical sensor having a light barrier with a beam path, and includes a bearing device attached to the circuit board, on which a push button having a release section and a probe head is movably mounted, wherein the probe head extends transversely to the circuit board, and is suitable for detecting the position of a movable gear element or a movable locking element by making the push button movable between a first position in which the release section engages the beam path of the optical sensor and a second position in which the release section releases the beam path of the optical sensor, - Opening the lock housing by removing the lock cover or the lock base, - Attaching the circuit board with sensor device to the removed lock ceiling or the removed lock floor, - Closing the lock housing by mounting the removed lock top or bottom, whereby the probe head then extends to one of the movable gear elements or one of the movable locking elements.

[0030] Upgrading a lock allows a purely mechanical lock to be easily enhanced with a sensor device. Repairing a lock is also easily accomplished by replacing the circuit board with the sensor device.

[0031] The invention is explained below by way of example embodiments with the aid of the accompanying drawings. The embodiments shown are to be understood as examples and not as limiting. Fig. Figure 1 shows a schematic representation of a single-leaf door. Fig. Figure 2a shows a first embodiment of the sensor device and a movable gear element of the lock mechanism, wherein the gear element is out of engagement with the sensor device. Fig. Figure 2b shows a second embodiment of the sensor device and a movable gear element of the lock mechanism, wherein the gear element is in engagement with the sensor device. Fig. Figure 3a shows a second embodiment of the sensor device and a movable gear element of the lock mechanism, wherein the gear element is out of engagement with the sensor device. Fig. Figure 3b shows a second embodiment of the sensor device and a movable gear element of the lock mechanism, wherein the gear element is in engagement with the sensor device.

[0032] Fig. Figure 1 shows a schematic representation of a door T, which is hinged to a door frame R. A door lock S is arranged in a lock receptacle of the door T. The lock has a lock housing in which a bolt SR and a latch SF are movably mounted. The bolt SR and the latch SF engage in a receptacle on the door frame R, corresponding to the bolt SR and the latch SF, respectively. A lock mechanism is also arranged in the lock housing, which serves to control the bolt SR and the latch SF. Furthermore, a circuit board P is arranged in the lock housing, on which at least one sensor device 1 is mounted. The sensor device 1 serves to detect the positions of movably mounted gear elements G of the lock mechanism. First embodiment of sensor device 1

[0033] The Fig. 2a and Fig. Figure 2b shows a first embodiment of the sensor device 1. The sensor device 1 comprises an optical sensor 2, a bearing device 3, a push button 4 and a spring 5.

[0034] The optical sensor 2 includes electrical connections 21 for electrically contacting the sensor device 1 with the circuit board P of the door lock S. Furthermore, the optical sensor 2 includes a U-shaped receptacle formed by two opposing side walls.

[0035] The optical sensor 2 can be configured as a continuous light barrier. In this configuration, one of the two side walls has an emitter for emitting a light beam. The other side wall has a receiver for receiving the light beam emitted by the emitter. The emitter emits the light beam directly to the receiver. The path of the light beam extends between the emitter and the receiver.

[0036] The optical sensor 2 can be configured as a reflective photoelectric sensor. In this configuration, one of the two side walls has an emitter for emitting a light beam and a receiver for receiving a light beam reflected from the other side wall. The other side wall has a reflector for reflecting the light beam emitted by the receiver. When the optical sensor 2 is configured as a reflective photoelectric sensor, the emitter does not emit the light beam directly to the receiver, as the light beam is reflected by the reflector. The path of the light beam extends between the emitter, the reflector, and the receiver.

[0037] The bearing assembly 3 is mounted together with the optical sensor 2 on the circuit board P of the door lock S. The bearing assembly 3 serves to movably mount the push button 4.

[0038] The probe 4 is mounted on bearing assembly 3 so as to be linearly movable relative to the optical sensor 2. The probe has a release section 41 and a probe head 42. The release section 41 of the probe 4 extends through a through-hole located on a bearing plate of the bearing assembly 3.

[0039] The probe head 42 of the push button 4 interacts with at least one movably mounted gear element G of the locking mechanism of the door lock S. The push button 4 is movable between a position in which the release section 41 of the push button 4 releases the area between the emitter and the receiver, and a position in which the release section 41 of the push button 4 engages in the area between the emitter and the receiver. In the position in which the release section 41 of the push button 4 does not engage the light beam of the optical sensor 2, the optical sensor 2 is not actuated, i.e., the optical sensor 2 is inactive. In the position in which the release section 41 of the push button 4 releases the area between the emitter and the receiver, the light beam emitted by the emitter is not interrupted, so that the light beam reaches the receiver.In the position where the release section 41 of the button 4 engages the area between the emitter and the receiver, the light beam emitted by the emitter is interrupted, so that the light beam does not reach the receiver. In the position where the release section 41 of the button 4 engages the light beam of the optical sensor 2, the optical sensor 2 is actuated, i.e., the optical sensor 2 is active.

[0040] The spring 5 is designed as a helical compression spring, with one end of the spring 5 attached to the bearing assembly 3 and a second end of the spring attached to the probe head 42 of the push button 4. The spring 5 surrounds the release section 41 of the push button 4. The spring 5 compresses the push button 4 into the position in which the release section 41 of the push button 4 releases the area between the emitter and the receiver. Second embodiment of sensor device 1

[0041] The Fig. 3a and Fig. Figure 3b shows a second embodiment of the sensor device 1. The sensor device 1 comprises an optical sensor 2, a bearing device 3, a push button 4 and a spring 5.

[0042] The optical sensor 2 includes electrical connections 21 for electrically contacting the sensor device 1 with the circuit board P of the door lock S. Furthermore, the optical sensor 2 includes a U-shaped receptacle formed by two opposing side walls.

[0043] The optical sensor 2 can be configured as a continuous light barrier. In this configuration, one of the two side walls has an emitter for emitting a light beam. The other side wall has a receiver for receiving the light beam emitted by the emitter. The emitter emits the light beam directly to the receiver. The path of the light beam extends between the emitter and the receiver.

[0044] The optical sensor 2 can be configured as a reflective photoelectric sensor. In this configuration, one of the two side walls has an emitter for emitting a light beam and a receiver for receiving a light beam reflected from the other side wall. The other side wall has a reflector for reflecting the light beam emitted by the receiver. When the optical sensor 2 is configured as a reflective photoelectric sensor, the emitter does not emit the light beam directly to the receiver, as the light beam is reflected by the reflector. The path of the light beam extends between the emitter, the reflector, and the receiver.

[0045] The bearing assembly 3 is mounted together with the optical sensor 2 on the circuit board P of the door lock S. The bearing assembly 3 serves to movably mount the push button 4.

[0046] The probe 4 is rotatably mounted on the bearing assembly 3 with respect to the optical sensor 2. The probe 4 has a probe body with a release section 41 and a probe head 42. The probe 4 has a pin 44 that is non-rotatably connected to the probe body and is rotatably mounted in a bearing hole 33 of the bearing assembly 3. Furthermore, the probe 4 has a section 45 projecting from the probe body that extends parallel to the pin 44. The bearing assembly 3 has a first contact section 34 and a second contact section 35, which define a rotational range of the probe 4. The rotational range of the probe 4 is limited by the fact that the projecting section 45 contacts the first contact section 34 at one end of its rotational range and the second contact section 35 at the other end.The push button 4 forms a two-armed lever, with the release section 41 representing the first lever arm of the push button 4 and the probe head 42 representing the second lever arm of the push button 4. The distance between the release section 41 and the pin 44 is smaller than the distance between the probe head 42 and the pin 44. This enables the detection of relatively small positional changes of the movable gear elements G of the lock mechanism.

[0047] The probe head 42 of the push button 4 interacts with at least one movably mounted gear element G of the locking mechanism of the door lock S. The push button 4 is movable between a position in which the release section 41 of the push button 4 releases the area between the emitter and the receiver, and a position in which the release section 41 of the push button 4 engages in the area between the emitter and the receiver. In the position in which the release section 41 of the push button 4 does not engage the light beam of the optical sensor 2, the optical sensor 2 is not actuated, i.e., the optical sensor 2 is inactive. In the position in which the release section 41 of the push button 4 releases the area between the emitter and the receiver, the light beam emitted by the emitter is not interrupted, so that the light beam reaches the receiver.In the position where the release section 41 of the button 4 engages the area between the emitter and the receiver, the light beam emitted by the emitter is interrupted, so that the light beam does not reach the receiver. In the position where the release section 41 of the button 4 engages the light beam of the optical sensor 2, the optical sensor 2 is actuated, i.e., the optical sensor 2 is active. Function of sensor device 1

[0048] The function of sensor device 1 is described below using the following examples: Fig. 2a and Fig. 2b and the Fig. 3a and Fig. 3b described. The sensor device 1 is attached to the circuit board P, which is fixedly arranged in the lock housing, and serves to detect the change in position of the gear element G of the lock mechanism, which is movably mounted in the lock housing. In the Fig. 2a and Fig. Figure 3a shows the movable gear element G of the lock mechanism spaced apart from the sensor device 1. The push button 4 is not retracted into the light beam of the optical sensor 2. The optical sensor 2 is not actuated, i.e., the optical sensor 2 is inactive. When the door lock S is actuated, for example by actuating the lock follower or the lock cylinder, movable gear elements G of the lock mechanism, for example the gear slide, are moved. During this movement, the movable gear element G of the lock mechanism encounters the push button 4 of the sensor device 1, causing the push button 4, against the action of the spring 5, to move from the position in which the release section 41 of the push button 4 releases the area between the emitter and the receiver to the position in which the release section 41 of the push button 4 engages in the area between the emitter and the receiver. This situation is shown in the Fig. 2b and Fig. Figure 3b shows the gear element G of the lock mechanism engaged with the sensor device 1, and the push button 4 is retracted into the light beam of the optical sensor 2. The optical sensor 2 is actuated, i.e., it is active. The light beam emitted by the receiver is interrupted by the trigger section 41 of the push button, so that the light beam does not reach the receiver. The optical sensor 2 then transmits a corresponding signal to the circuit board via one or more of its electrical connections 21. This signal can then be evaluated. It is essential that the push button 4 can be actuated directly by the movable gear element G of the lock mechanism. Switching flags or similar components are not provided on the gear element G. Reference symbol list 1 Sensor device 2 optical sensors 21 electrical connection 3 Storage facility 33 bearing holes 34 first plant section 35 second plant section 4 buttons 41 Trigger section 42 probe 44 pens 45 preceding section 5 springs G Gear element P board R door frame S door lock SF Castle Trap SR lock bolt T Door

Claims

[1] Door lock (S) for a door (T) or a window or the like, comprising a lock housing including a lock top and a lock bottom arranged opposite the lock top, wherein a movable gear element (G), or several movable gear elements (G), and a movable bolt element (SR, SF) or several movable bolt elements (SR, SF) are mounted in the lock housing, and a sensor device (1) arranged on a circuit board (P), wherein the circuit board (P) is parallel to the inside of the lock housing. is arranged in the lock ceiling and / or the lock base and wherein the movable gear elements (G) and / or the movable locking element (SR, SF) or the several movable locking elements (SR, SF) are movable parallel to the plate (P), wherein the sensor device (1) comprises at least one optical sensor (2) having a light barrier for detecting a position of the at least one gear element (G) or a position of the at least one movable locking element (SR, SF), wherein the sensor device (1) comprises a bearing device (3) on which a probe (4) having a release section (41) and a probe head (42) is movably mounted, wherein the probe head extends to one of the movable gear elements (G), or the movable locking element (SR, SF) or one of the movable locking elements (SR, SF) in order to detect their position, by making the probe (4) movable by actuating the probe head (42) between a first position in which the release section (41) engages in the beam path of the optical sensor (2) and a second position in which the release section (41) releases the beam path of the optical sensor (2), characterized by , that the bearing device of the probe (4) is attached to the circuit board (P) and that the probe head (42) extends transversely to the circuit board (P). [2] Door lock (S) according to claim 1, characterized by , that the light barrier of the at least one optical sensor (2) is designed as a reflection light barrier or as a continuous light barrier. [3] Door lock (S) according to claim 1 or 2, characterized by, that the probe head (42) is directly acted upon by the movable gear element (G) or locking element (SR, SF) to be detected, by the probe head (42) being in direct contact with the movable gear element (G) or locking element (SR, SF) in the first position and the movable gear element (G) or locking element (SR, SF) acting upon the probe head (42) in the direction of the circuit board (P), and that the movable gear element (G) or locking element (SR, SF) is out of engagement with the probe head (42) in the second position and the probe head (42) protrudes into the range of motion of the movable gear element (G) or locking element (SR, SF). [4] Door lock (S) according to one of claims 1 to 3, characterized by, that the sensor device has several sensors for detecting several movable gear elements (G) and / or locking elements (SR, SF) and that the circuit board (P) extends over such an area in the lock housing and that the sensors are arranged on the circuit board (P) in such a way that the pushbuttons (4) or probe heads (42) projecting transversely from the circuit board (P) project directly into the movement range of the gear elements (G) and / or locking elements (SR, SF) to be detected. [5] Door lock (S) according to any one of the preceding claims, characterized by , that the sensor device (1) has a spring (5) which acts on the button (4) in the direction of its second position. [6] Door lock (S) according to any one of the preceding claims, characterized by , that the button (4) is mounted on the bearing device (3) so as to be linearly movable. [7] Door lock (S) according to claim 6, characterized by, that the bearing device (3) has a bearing plate which is provided with a through hole through which the release section (41) is guided. [8] Door lock (S) according to one of claims 5 to 7, characterized by , that a first end of the spring (5) is attached to the bearing plate and a second end of the spring is attached to the probe head (42). [9] Door lock (S) according to one of claims 5 to 8, characterized by , that the spring (5) is designed as a helical compression spring and partially surrounds the release section (41). [10] Door lock (S) according to any one of claims 1 to 5, characterized by , that the button (4) is pivotably mounted on the bearing device (3). [11] Door lock (S) according to claim 10, characterized by , that the button (4) has a pin (44) which is connected to the button (4) in a rotationally fixed manner and which is rotatably mounted in a bearing hole (33) of the bearing device (3). [12] Door lock (S) according to one of claims 10 or 11, characterized by , that the storage device (3) has a first system section (34) and a second system section (35) which define a rotation range of the probe (4). [13] Door lock (S) according to one of claims 10 to 12, characterized by , that the button (4) is designed as a two-armed lever, wherein the distance between the probe head (42) and the pin (44) is smaller than the distance between the release section (41) and the pin (44). [14] Door lock (S) according to any one of the preceding claims, characterized by , that the sensor device (1) has an evaluation unit arranged on the circuit board (P), in particular with a microprocessor, to evaluate the signals of the sensor (2) or sensors (2) and to direct them to a control unit arranged outside the lock housing. [15] Method for upgrading a door lock (S) with a sensor device, comprising providing a door lock (S) with a lock housing, comprising a lock top and a lock bottom arranged opposite, wherein movable gear elements (G) and one or more movable locking elements (SR, SF) are mounted in the lock housing, characterized by the next steps, - Providing a circuit board (P) with a sensor device (1), wherein the sensor device (1) comprises at least one optical sensor (2) having a light barrier with a beam path, and includes a bearing device (3) attached to the circuit board (P), on which a push button (4) having a release section (41) and a probe head (42) is movably mounted, wherein the probe head (42) extends transversely to the circuit board (P), and is suitable for detecting the position of a movable gear element (G) or a movable locking element (SR, SF) by making the push button (4) movable between a first position in which the release section (41) engages the beam path of the optical sensor (2) and a second position in which the release section (41) releases the beam path of the optical sensor (2), - Opening the lock housing by removing the lock cover or the lock base, - Attaching the circuit board (P) with the sensor device to the removed lock ceiling or the removed lock floor, - Closing the lock housing by mounting the removed lock top or the removed lock bottom, whereby the probe head (42) then extends to one of the movable gear elements (G) or to one of the movable locking elements (SR, SF).

Images