Device for a furniture drive, furniture drive, and furniture

Abstract

A device (10) for a furniture part drive (3) is proposed, comprising a drive unit for driven movement of a furniture part (4), wherein the furniture part (4) is movably attached to a piece of furniture (1), wherein the device (10) has a release device (11) for switching the drive unit, and wherein the release device (11) has a base body (12) and a contact element (13) movable relative to the base body (12), which, when the device (10) is attached to the piece of furniture (1), can be brought into contact with the furniture part (4), so that when the furniture part (4) is moved from the outside, the contact element (13) is movable relative to the base body (12).According to the invention, the contact element (13) is coupled to a slide (14) of the release device (11) which is linearly movable on the base body (12), wherein, when the slide (14) is linearly moved from a starting position, a switching command to switch the drive unit can be triggered if a predefinable value of a distance traveled by the slide (14) is exceeded during the linear movement of the slide (14) from the starting position, and that an electrical unit is provided which, depending on a position of the slide (14), provides an electrical signal to trigger the switching command to switch the drive unit.

Description

State of the art

[0001] In the furniture industry, devices for operating furniture components are known. These devices serve to operate movable furniture parts such as flaps, doors, or drawers on corresponding furniture, for example, cabinets or chests of drawers. The opening and / or closing movement of the furniture component relative to the furniture body is achieved with the aid of the furniture component drive, which includes, for example, a drive unit, an electric drive, or an electric motor.

[0002] For example, a device in question has a triggering device for acting on the furniture component drive or its drive unit in order to switch the furniture component drive on and / or off. The state of the art is defined in EP 2061357 B1, EP 2148590 B1,

[0003] EP 2854296 B1 and the pre-published document WO 2022 / 079173 A1 named. Purpose and advantages of the invention

[0004] The object of the present invention is to improve a device described above, in particular with regard to a reliable and extended functionality of the triggering device.

[0005] This problem is solved by the independent claim. The dependent claims address advantageous and expedient further developments of the invention.

[0006] The invention relates to a furniture drive with a device for the furniture part drive, which includes a drive unit for the driven part.

[0007] Moving a furniture part includes, wherein the furniture part is movably attached to a piece of furniture, wherein the device has a release mechanism for switching the drive unit, and wherein the release mechanism has a base body and a contact element movable relative to the base body, which, when the device is attached to the furniture, can be brought into contact with the furniture part, so that when the furniture part is moved from the outside, the contact element is movable relative to the base body.

[0008] The device and / or the furniture component drive is preferably designed as a single unit, which can preferably be attached to the furniture as a whole or in one piece. The furniture component drive comprises, for example, a fitting or a multi-joint mechanism and is preferably a low-profile fitting such as a flap fitting. The flap fitting serves to pivot the furniture component or a flap or door around, for example, a horizontal axis when the furniture is in use, e.g., a top-loading cabinet. Typically, exactly two fitting units are provided for moving a furniture component or corresponding flap fittings for a top-loading flap.

[0009] The release mechanism, which includes, for example, a switch, has a base body and a contact element, the contact element being movable relative to the base body. The release mechanism is designed, for example, as a touch-latch system.

[0010] Furniture component drives or flap fittings often incorporate a touch-latch system. This system detects an externally imposed closing or opening movement of the closed furniture component, such as a top flap, and translates it into a trigger command for the furniture component drive.

[0011] The detection is achieved, for example, with a contact element that can be moved or repositioned relative to the base body, the state of which is detected by a control unit of the furniture component drive, such as a control or regulation unit, preferably with a microcontroller unit. The base body is preferably fixed to the furniture carcass or the furniture component.

[0012] The core of the invention lies in the fact that the contact element is coupled to a linearly movable slide of the release device mounted on the base body. When the slide moves linearly from its starting position, exceeding a predefinable distance traveled by the slide, a switching command for switching the drive unit is triggered. Furthermore, an electrical unit is provided which, depending on the slide's position, generates an electrical signal to trigger the switching command for switching the drive unit. This provides a particularly advantageous release device. The release device includes a sensor function or sensor unit that can provide an analog signal.

[0013] The contact element acts, for example, between a side of the furniture body facing the furniture component and a side of the furniture component facing the side of the furniture body when the furniture component is closed. If, for example, the closed furniture component is pushed towards the side of the furniture body, which is done externally by a user, the contact element is displaced relative to the base body. This triggers the release command. The displacement of the contact element is detected beforehand by the control unit of the furniture component drive, which includes a computer unit. A corresponding command is then forwarded from the control unit to the drive unit. The drive unit receives the command, or drive command, to open the furniture component. When the drive is activated, the furniture component opens relative to the furniture body, guided by the furniture component drive or, for example, the flap fitting.It is also possible to close the furniture part by means of a driven mechanism, whereby a direct, e.g. manual, action is taken on the contact element.

[0014] Preferably, the electrical signal is provided when the slide travels a defined, predetermined or predefinable distance and / or reaches or assumes a defined, predetermined or predefinable position. The defined, predetermined position of the slide is preferably exactly one predetermined position among a multitude of different possible positions along its entire possible path of travel. It is also conceivable that two or more different positions can be predetermined, with an electrical signal being provided for each predetermined position upon the slide reaching it, triggering the switching command to activate the drive unit. In particular, an electrical signal is configured to selectively trigger a predefinable switching command to activate the drive unit.The switching command can be specified such that the drive unit is switched on if it is switched off at that time. Alternatively or additionally, the switching command can be specified such that the drive unit is switched off if it is switched on at that time. Preferably, a switching command to switch on the drive unit is issued when the furniture part is in a closed (static) state and / or an open (static) state, preferably when the furniture part is fully closed or fully open.

[0015] An analog signal is, in particular, a signal with a continuous and uninterrupted waveform, especially with regard to its temporal progression. An analog signal is, in particular, described as a smooth function.

[0016] The linear relationship between the position of the moving slider is advantageously used to define a predefined path length and / or position of the slider for a switching signal. Preferably, each path length and / or position is assigned a distinct corresponding signal, preferably an electrical signal. The electrical signal is detected by the control unit. Thus, preferably, for example, when the slider reaches its precisely predefined position, the corresponding electrical signal or the specific electrical signal serves as the prerequisite for the trigger command, and the drive unit is then activated.

[0017] The path signal preferably correlates with an associated electrical signal.

[0018] The device is designed as part of a furniture component drive, such as a flap drive for a flap or door of a piece of furniture. An analog signal is provided by the triggering device. The relationship between the distance traveled by the slider and another measured variable, such as the signal voltage (which can be tapped as a sensor signal), results in a particularly continuous function.

[0019] Preferably, the contact element and the slider are directly and identically linearly movable. The linear movement of the slider preferably serves to measure the absolute insertion path of the contact element. A starting position of the slider with the furniture part closed and at rest, which, in contact with the contact element, defines its position, correlates, for example, with a zero position of the trigger unit or the device. Accordingly, the starting position preferably correlates in particular with a closed position of the closed furniture part in contact with the contact element.

[0020] The triggering unit is preferably designed as an electric push button, in particular as a furniture component push button or analog push button.

[0021] The movement of the slider via a movement of the contact element preferably occurs through external influence, e.g., via the furniture part abutting the contact element, or by pressing against the contact element when a person presses on the furniture part from the outside and the contact element moves along with it. Alternatively, the person presses directly or immediately on the contact element by manually pressing on it, provided that the contact element is freely accessible from the outside or from an operating side of the furniture, particularly if the contact element is not covered or obscured by the furniture part.

[0022] The trigger unit requires an electrical supply, for example a supply via a power grid or an electrical energy storage device such as a rechargeable battery.

[0023] Advantageously, the linear movement of the slider is detected by a sensor in the device that operates on the basis of the Hall effect. The sensor is preferably part of the triggering device. The sensor is preferably mounted on the base body. When a current-carrying conductor is located in a stationary magnetic field, an electrical voltage arises perpendicular to both; this is the Hall effect. The sensor preferably comprises a Hall element. The Hall element is a transducer whose output voltage, i.e., the sensor voltage, depends on the strength and direction of a magnetic field. Triggered by the Lorentz force, a voltage, the so-called Hall voltage, arises in a current-carrying conductor located in a magnetic field. The sensor also comprises a magnetic arrangement or a magnetic body for generating the magnetic field. The magnetic field is generated by exactly two spaced-apart or...Separate magnetic bodies of the magnetic arrangement are provided, each generating its own magnetic field. The overall magnetic field, which partially overlaps between the magnetic bodies, is preferably nearly linear in the region where the Hall element is located. A preferably constant voltage is applied externally to the sensor or the Hall element. The electrical supply is provided via a current-carrying line. The detectable signal voltage, which can be supplied to the control unit or microcontroller, is the Hall voltage. The sensor, for example, has a preferably stationary Hall element located in the region of the magnetic field of the magnetic arrangement where a linear magnetic field line is formed. The magnetic arrangement for generating the magnetic field comprises two permanent magnets. The magnetic arrangement is part of the device for the furniture component drive or part of the triggering mechanism.

[0024] The magnet arrangement is coupled to the slider, for example, connected to or attached to it. The magnetic field is preferably designed such that it forms at least nearly linear or straight magnetic field lines in the area where the Hall element is located. The magnetic field lines in the relevant area of ​​the magnetic field are preferably aligned in the direction of movement of the slider or at least nearly linearly aligned.

[0025] A kinematically reversed arrangement is not fundamentally excluded, whereby the Hall element is movable or coupled to the slider and the magnet arrangement is stationary, for example mounted on the base body.

[0026] According to the invention, the triggering device comprises a permanent magnet arrangement with two permanent magnets.

[0027] Preferably, the permanent magnet arrangement is part of the sensor of the release device. Preferably, the release device, comprising a conductive connection point for electrical connection to the power supply, is designed as a unit that can be attached to the furniture component drive, which, for example, facilitates the subsequent retrofitting of a conventional furniture component drive.

[0028] The permanent magnet arrangement, which includes two permanent magnets, allows the release device to be designed simply, reliably, and economically.

[0029] Preferably, the permanent magnet arrangement is provided on the slider. The linear movement of the contact element leads to a corresponding linear movement of the slider and thus to a linear movement of the permanent magnet arrangement relative to the sensor or Hall element.

[0030] The change in signal voltage that can be detected in this process, or

[0031] The Hall voltage is processed by the control unit as an electrical signal that triggers the signal. Appropriate or connected contacts are provided for detecting the signal voltage.

[0032] According to the invention, the permanent magnet arrangement of the triggering device comprises two permanent magnets spaced apart by an intermediate gap, wherein both permanent magnets are aligned with the same magnetic pole towards the intermediate gap.

[0033] The magnetic field generated by the two permanent magnets preferably forms linear magnetic field lines in the area where the sensor is located. These magnetic field lines are preferably aligned linearly with the direction of movement of the slider. According to the invention, the slider is tuned to the generated magnetic field such that, with respect to the area of ​​the magnetic field in which the slider is located or surrounds it, the movement of the slider along its path of travel occurs in the direction of the linear magnetic field lines of the generated magnetic field. The generated magnetic field, within its linear magnetic field line region, is used to create a e.g.A linear relationship is established between the detectable signal or Hall voltage and the position of the slider. This allows the triggering device to generate and process an analog signal based on the detectable Hall voltage at the Hall element. According to the invention, each detectable signal voltage is precisely assigned a corresponding position of the slider and thus of the furniture component during its movement. This is because the furniture component is coupled to the slider by contacting it and moving together with it, thus linking the position of the furniture component to the slider. Therefore, by detecting a predefined signal voltage, the electrical signal for triggering the switching command for the drive unit can be provided, in particular, by determining the position of the slider and thus the position of the furniture component.The assignment of a defined signal voltage to the position of the slider is preferably carried out by means of a prior or underlying calibration.

[0034] After the furniture part, flap or door has traveled a precisely predefined indentation distance, or upon reaching a predefined travel position of the slider, the drive unit is switched in the closed position relative to the furniture body and the furniture part is moved or opened in the opposite direction of its indentation or release movement according to a touch-latch release.

[0035] It is advantageous if the device's sensor incorporates a Hall-effect sensor element within a magnetic field generated by the permanent magnet assembly. This allows for the simple and precise provision of an analog signal to the triggering device. A desired trigger path or trigger position of the slider, and thus a precise trigger path or trigger position of the furniture component when pushed from its closed rest position, is also advantageous. Furthermore, the closed position of the furniture component at the end of a driven closing movement can be approached precisely and repeatably, upon contact between the furniture component and the contact element at the end of its closing movement driven by the drive unit. The moment the drive unit stops, the furniture component remains in the achieved closed position, as does the slider with the contact element.

[0036] According to an advantageous modification, the sensor of the device has a Hall sensor element in a space between two spaced-apart permanent magnets of the permanent magnet arrangement of the triggering device. This advantageously enables the provision of an analog signal or sensor signal.

[0037] Preferably, both permanent magnets and the Hall sensor element are positioned offset from each other in the direction of the linear movement path of the slide. Preferably, the two permanent magnets are located along, for example, a straight line in the direction of movement of the slide, or offset from each other. Preferably, the two permanent magnets are identical.

[0038] Furthermore, it is advantageous if the device's sensor incorporates a Hall-effect sensor element that is fixed in position on the trigger mechanism. This results in a straightforward design.

[0039] Furthermore, it is advantageous that the slider is mounted with preload so that it can move freely. With the associated preload, the slider, and thus the contact element, automatically returns to a defined or predefinable position, such as a starting position, without any external force being applied, e.g., by a person (which would otherwise occur due to the furniture part pressing on the contact element). The preload preferably causes automatic movement from, for example, a depressed position of the slider to the starting position. The stationary starting position of the slider and the contact element is reached particularly when the furniture part is open and there is no contact between the furniture part and the contact element.With the device mounted, the contact element preferably protrudes forward beyond a front surface of the furniture carcass in its initial position, particularly towards an inside surface of the furniture, as the furniture part approaches the contact element during closing. This ensures that the furniture part comes securely into contact with the contact element before it touches a section of the front surface of the furniture carcass. As the furniture part continues to close, the contact element then retracts slightly against the preload until the furniture part reaches its rest or closed position. This preferably creates a closing gap between an inside surface of the furniture part and a front surface of the furniture carcass, which is necessary for the touch-latch system.

[0040] In its initial position, the slide is preferably held securely against a mechanical stop due to the preload, and / or the contact element coupled to the slide is preferably held against a mechanical stop in its initial position. This engagement with the stop is preferably achieved by pressing against it or by applying a residual compressive force through the application of the preload.

[0041] Preferably, the slider is mounted with a spring-loaded linear movement, or the preload is achieved with a spring. The preload is, for example, provided by a compression spring such as a coil spring, which pushes the slider, and thus the contact element, towards its initial or starting position. The front or contact side of the contact element, as viewed from the mounted state of the device on the furniture, preferably projects beyond the front or front plane of the furniture body towards the furniture part, relative to its closed position on the furniture.

[0042] The invention relates to a furniture part drive with a drive unit for the driven movement of a furniture part which is movably present on a piece of furniture, wherein a device according to one of the above described embodiments is provided.

[0043] This allows a furniture component drive, preferably a flap drive with a joint or swivel arrangement, to be advantageously provided.

[0044] With a furniture component drive installed, it is located between the furniture carcass and the furniture component. The drive unit preferably includes a motor, such as an electric motor. The device is positioned, for example, approximately halfway up the furniture carcass. A person can then reliably activate the touch latch by pressing on a lower vertical area of ​​the furniture component.

[0045] Furthermore, it is advantageous if the device is integrated into a component of the furniture drive, the component being designed for attachment to a furniture carcass. Preferably, the furniture drive component is designed as a single, integrated unit and / or as a unit that can be mounted individually on the furniture. The furniture drive component is preferably inserted, either as a single piece or as a whole, into a prepared recess on the inside of a wall of the furniture carcass. The furniture component is preferably connected to the furniture carcass via an articulated arm or hinge arm of the furniture drive.

[0046] According to the invention, a control unit for operating the furniture component drive is provided, which communicates with the sensor and the drive unit, wherein a predefinable zero position of the contact element can be predefinable by the control unit during a closing process of the furniture component driven by the furniture component drive. This allows the drive unit to preferably move the furniture component to a precisely predefinable closing position relative to the furniture body each time it closes.

[0047] The control unit preferably comprises a microcontroller unit or a programmable computer unit with appropriate operating software. The control unit also communicates with the furniture component drive, such as the electric motor. The control unit serves in particular to control and / or regulate the furniture component drive.

[0048] The control unit is designed so that the same, or predefinable, zero position of the slide is reached during each closing operation. At the end of each driven closing operation, the contact element, and thus the furniture component, reaches a predefinable, identical starting position that correlates with the closed position of the furniture component.

[0049] Furthermore, the invention relates to a piece of furniture comprising a furniture body and a furniture component, and a furniture component drive as described above. The furniture is, for example, a cabinet such as a top-loading cabinet. Character description

[0050] Further features and advantages of the invention are explained in more detail using an exemplary embodiment. Specifically, the following is shown: Fig. 1 shows a schematic representation of a piece of furniture in side view with a furniture part movably mounted on a furniture carcass via a furniture part drive in a partially open position, omitting one of the two side walls of the furniture carcass (first in the direction of view). Fig. 2 shows the complete piece of furniture in side view. Fig. 1 , where the furniture part is shown shortly before reaching its closed position, Fig. 3 shows an enlarged section of the furniture according to Fig. 2 omitting the first side wall of the furniture body, Fig. 4, the furniture according to Figs. 1-3 in side view with the furniture part in closed position, Fig. 5 an enlarged section of the furniture according to Fig. 4 Omitting the first side wall of the furniture body, Fig. 6 shows the furniture in side view with the furniture part in an operating position, which differs from the closed position according to Fig. 4by pressing on the furniture part from the outside, Fig. 7 shows an enlarged section of the furniture according to Fig. 6 omitting the first side wall of the furniture body, Fig. 8 a perspective detail view of a switch of the furniture part drive in an intermediate position of a slider of the switch, Fig. 9 a perspective detail view of the switch according to Fig. 8 in an extended position of the switch slider and Fig. 10 a perspective detail view of the switch according to Fig. 8 in a recessed position of the switch slider.

[0051] The Figures 1 to 7The diagram relates to a piece of furniture 1, designed as a wall cabinet, with a spatially fixed cabinet body 2 and a furniture part 4 movable thereon via a furniture part drive 3. This furniture part 4 is designed, for example, as a flap or top flap and is pivotable about a horizontal axis A on the furniture 1. The furniture part drive 3, indicated in outline by an edge 3a, is accordingly designed as a drive for a top flap fitting 5, preferably comprising an electric motor. For this purpose, the top flap fitting 5 includes fitting or hinge elements with, for example, a hinge or articulated arm 5a. The edge 3a of the furniture part drive 3, which is, for example, recessed on the inside in a recess of a second side wall 6 of the furniture 1, is schematically rectangular.

[0052] The top flap fitting 5 comprises, for example, a single or preferably a multi-joint such as a four- or five-joint. The multi-joint preferably has several joint axes positioned parallel to each other, about which a respective joint arm of the multi-joint can rotate when the furniture part 4 moves relative to the furniture body 2. The joint arm 5a, which is fixed to an inner side 4a of the furniture part 4, is in Fig. 1 Partially visible.

[0053] The furniture body 2 of the highly schematically shown furniture 1 has, in relation to the one according to the Figures 1 to 7 The furniture shown in its usable state 1 comprises the two opposing vertically oriented side walls 6, a carcass back wall 7, a horizontal top panel 8 and a horizontal bottom panel 9.

[0054] The furniture component drive 3 has a drive unit, not visible, for moving the furniture component 4, for example an electric motor. The furniture component drive 3 also has a device 10 with a release mechanism 11 for switching the drive unit.

[0055] The device 10 is preferably designed as an analog button or analog push button.

[0056] The release device 11 comprises a base body 12 and a contact element 13 which is movable relative to the base body 12 in an extension or displacement direction R1 and in an opposite insertion direction R2, with a contact surface 13a (see Fig. 8The contact element 13 is coupled to a slide 14 of the release device 11, which is linearly movable on the base body 12, or rather, motionally coupled, here, for example, rigidly connected. The slide 14 is linearly movable back and forth between opposite, spaced-apart end positions of the slide 14 on the base body 12 relative to the base body 12 in directions R1 and R2. The slide 14 is pre-tensioned and movably mounted on the base body 12 by a spring 19, such as a coil spring. The ends of the spring 19 are clamped between a base 20 on the base body 12 and a lower projection 21 on the slide 14.

[0057] To define the end positions of the slide 14, a mechanical stop 15 or 16 is preferably provided on the base body 12. The stops 15 and 16 are, for example, vertically oriented flat sections.

[0058] The stop 15 interacts with a contact section 17 formed on the slide 14 in an extended end position. In the slide 14's fully extended end position in the direction of R1, the contact section 15 interacts with the base body 12 according to... Fig. 9 The system section 17 is at stop 15. This position of the slide 14 with the contact element 13 according to Fig. 9 corresponds to the in Fig. 1 as shown, i.e., when no pressure force acts on the contact element 13 from the outside in the direction of R2 and thus the spring 19 moves the slider 14 into the end position according to Fig. 9 pushes. The contact element 13 with the contact surface 13a protrudes beyond a front-side vertical plane E on the front side of the furniture body 2.

[0059] In the further end position of the slide 14 on the base body 12, which is moved maximally in the direction of R2 and is not shown, a contact section 18, which is present on the slide 14, is in contact with the stop 16. Fig. 10shows the position of the slide 14, which is moved in the direction of R2 by a pressure force F, shortly before reaching its further end position on the base body 12.

[0060] According to Fig. 8 The slide 14 is in a stationary starting position on the base body 12, i.e., in a position or path position that is, for example, intermediate with respect to the entire possible range of motion of the slide 14. This path position represents an intermediate position between the two end positions. In this position, a force acts on the contact surface 13a in the direction of R2, counteracting the action of the spring 19.

[0061] According to Fig. 1 The device 10 integrated in the furniture part drive 3 or the analog button is preferably located in the upper half to approximately the upper quarter of the furniture body 2 or near the top flap fitting 5 with its hinge function.

[0062] The Figures 2 and 3 This shows that from an open position, e.g. according to Fig. 1in the closing or swiveling direction S1 (see Fig. 1 ) furniture part 4 moving towards plane E at the moment of contact of a section of the inner side 4a of the furniture part 4 with the device 10 or the contact surface 13a of the contact element 13 fully extended relative to the base body 12, as shown in Fig. 9 As shown. The closing movement of the furniture part 4 in the closing direction S1 is driven, for example, by the electric motor of the furniture part drive 3.

[0063] Since the device 10 communicates with the furniture part drive 3, e.g. via preferably a control unit (not shown) with operating software or microcontroller, it is preferably programmed or configurable such that, for example, each time the furniture part 4 is closed by the drive or each, e.g., second, third or fourth time the furniture part drive 3 moves the furniture part 4 to the specified closed position, according to Fig. 4, 5. In this process, the device 10 or the contact element 13 or the slider 14 adjusts itself to a zero position defined by the predetermined closing position, each time adjusted by the analogous predetermined travel position of the slider 14.

[0064] The resulting resting closed position of furniture part 4 is shown by the Figures 4 and 5 , i.e., after the drive unit of the furniture part drive 3 is switched off. Accordingly, when the slider 14 reaches its zero position, in which the drive unit or the electric motor is switched off, the contact surface 13a of the contact element 13 is in contact with the inside of the inner surface 4a of the furniture part 4. Preferably, a plane of the furniture part 4 defined by the flat inner surface 4a is aligned parallel to the plane E of the front of the furniture body 2 (see figure). Fig. 4, 5 The slide 14, for example, is in a middle intermediate position or travel position (see below). Fig. 8) of a possible maximum movement path of the slider 14 relative to the base body 12 of, for example, 5 millimeters.

[0065] The Figures 6 and 7 Figure 1 shows a triggering process by pressing with a force A on the outside of the furniture part 4 according to a touch-latch system to trigger a switching command to switch or turn on the drive unit of the furniture part drive 3. The furniture part 4 is thereby pivoted slightly inwards in the closing direction S1, and a force K acts from the inside 4a on the contact surface 13a, moving the contact element 13 and the slider 14 in the direction of R2, for example, as shown. Fig. 10Upon detection of a change in signal voltage by a sensor 23 (described below) caused by a movement of the slider 14 towards R2 by, for example, a few tenths of a millimeter, this signal is processed by, for example, a microcontroller unit of the control unit. This activates the drive unit of the furniture component drive 3, and the furniture component 4 is moved or opened in the direction opposite to direction S1. The total possible actuation stroke of the slider 14 towards R2 is, for example, 1.5 millimeters, which corresponds to a closing gap SP between the inner surface 4a and the plane E when the furniture component 4 is closed, according to... Fig. 5 correlated.

[0066] The device 10, or analog push button, comprises an electrical line 22 through which the sensor 23, designed as a Hall sensor and mounted on the base body 12 between the stops 15 and 16, is electrically supplied. The sensor 23 is designed as a Hall element or Hall sensor. The device 10 also has a magnet arrangement 24 with two permanent magnets 25 and 26 spaced apart from each other in the direction of R1 and R2, respectively, between which the sensor 23 is located in the direction of movement of the slider 14. The two permanent magnets 25 and 26, with their magnetic fields M1 and M2, are aligned with their same magnetic poles south to south, or alternatively north to north, so that a change in the position of the slider 14 along its path of movement causes a change in the signal voltage or Hall voltage detectable at the sensor 23, which serves to trigger a switching command.When the slider 14 moves, a trigger command is detected and processed by the control unit to trigger the switching command for the drive unit. Subsequently, once the force A (caused by the user lowering themselves from the furniture part 4) no longer exists, the furniture part 4 is driven in the opening direction opposite to the closing direction S1, or pivoted upwards until a predefined open position of the furniture part 4 on the furniture body 2 is reached. The position of the furniture part 4 is then... Fig. 1 Driven over in the opposite direction of S1. At the end of the opening movement, the furniture part 4 is almost horizontal or preferably swung upwards slightly further. Reference symbol list

[0067] 1 Furniture 2 Furniture carcass 3 Furniture part drive 3a Edge 4 Furniture part 4a Inside 5 Top flap fitting 5a Articulated arm 6 Side panel 7 Carcass back panel 8 Top panel 9 Bottom panel 10 Device 11 Release device 12 Base body 13 Contact element 13a Contact surface 14 Slider 15, 16 Stop 17, 18 Installation section 19 Spring 20 Base 21 Projection 22 Cable 23 Sensor 24 Magnet arrangement 25 Permanent magnet 26 Permanent magnet

Claims

1. Furniture-part drive (3) having a drive unit for the driven movement of a furniture part (4), which is movably provided on an item of furniture (1), having an apparatus (10), which has a tripping device (11) for switching the drive unit and wherein the tripping device (11) has a main body (12) and a contact element (13) which can be moved relative to the main body (12) and, when the apparatus (10) is attached to the item of furniture (1), can be brought into contact with the furniture part (4), so that the contact element (13) can be moved relative to the main body (12) in the event of movement of the furniture part (4) effected from the outside, wherein the contact element (13) is coupled to a slide (14) of the tripping device (11), the slide being linearly movably held on the main body (12), wherein, in the event of a linear movement of the slide (14) from a starting position of the slide (14), a switching command for switching the drive unit can be initiated when a specified value for a travel distance covered by the slide (14) is exceeded during the linear movement of the slide (14) from the starting position, and wherein an electrical unit is provided, which, depending on a travel position of the slide (14), provides an electrical signal for initiating the switching command for switching the drive unit, wherein the tripping device (11) comprises a permanent-magnet arrangement with two permanent magnets (25, 26) spaced apart by means of an intermediate space, wherein the two permanent magnets (25, 26) are oriented towards the intermediate space with the same magnetic pole, wherein the slide (14) is matched to a generated magnetic field in such a way that, with respect to the region of the magnetic field in which the slide (14) is present or the magnetic field surrounds the slide, the slide (14) moves along its movement path in the direction of the linear magnetic field lines of the generated magnetic field, wherein the linear movement of the slide (14) is detected by a sensor (23) of the apparatus, the sensor operating on the basis of the Hall effect, wherein a control unit for operating the furniture-part drive (3) is present, the control unit communicating with the sensor (23) and the drive unit, characterized in that a specifiable zero position of the contact element (13) can be specified by the control unit during a closing operation of the furniture part (4) driven by the furniture-part drive (3), wherein each signal voltage that can be tapped off is exactly assigned an associated travel position of the slide (14) and thus of the furniture part (4) as it moves.

2. Furniture-part drive (3) according to Claim 1, characterized in that the sensor (23) of the apparatus (10) has a Hall sensor element within a magnetic field generated by the permanent-magnet arrangement.

3. Furniture-part drive (3) according to either of the preceding Claims 1 and 2, characterized in that the sensor (23) of the apparatus (10) has a Hall sensor element in an intermediate space between the two spaced-apart permanent magnets (25, 26) of the permanent-magnet arrangement of the tripping device (11).

4. Furniture-part drive (3) according to any of the preceding claims, characterized in that the sensor (23) of the apparatus (10) has a Hall sensor element, which is provided fixed in position on the tripping device (11).

5. Furniture-part drive (3) according to any of the preceding claims, characterized in that the slide (14) is movably mounted in a preloaded manner.

6. Furniture-part drive (3) according to any of the preceding claims, characterized in that the apparatus (10) is integrated in a structural unit of the furniture-part drive (3), wherein the structural unit is designed to be attached to a furniture body (2).

7. Item of furniture (1) comprising a furniture body (2) and a furniture part (4) and having a furniture-part drive (3) according to any of the preceding claims.

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