Furniture drive systems for movable furniture parts

Abstract

A furniture drive system (1) for a movable furniture part (2), said furniture drive system (1) comprising a support (4) for assembling the furniture drive system (1) on a furniture cabinet (3), an adjustment arm device (5) movably, preferably pivotably, supported on the support (4), said adjustment arm device (5) being connectable to the movable furniture part (2), an electric motor (30) which is connected or connectable to said adjustment arm device (5), via which said adjustment arm device (5) is at least partially movable, and at least one drive device (A) separate from said electric motor (30), which is capable of exerting a force on said adjustment arm device (5). The at least one driving device (A) has an adjusting device (8, 14) capable of adjusting a force that can be applied to the adjustment arm device (5) by the at least one driving device (A), and a control device (44) capable of controlling the electric motor (30), the control device (44) having an identifying device (45) for identifying a force that can be applied or is applied to the adjustment arm device (5) by the at least one driving device (A), the at least one driving device (A) having a damping device (7) by which the closing movement (S) and / or the opening movement (O) of the adjustment arm device (5) can be damped, and the identifying device (45) is configured to perform a damper test of the damping device (7).

Description

[Technical field]

[0001] The invention relates to a furniture drive system for a movable furniture part, comprising a support for assembling the furniture drive system on a furniture cabinet, an adjustment arm device movably, preferably pivotably, supported on the support and connectable to the movable furniture part, an electric motor connected or connectable to the adjustment arm device, via which the adjustment arm device is at least partially movable, at least one drive device separate from the electric motor, capable of exerting a force on the adjustment arm device, an adjustment device, capable of adjusting the force that can be exerted on the adjustment arm device by the at least one drive device, and a control device, by means of which the electric motor can be controlled. The invention further relates to a piece of furniture comprising such a furniture drive system. The invention further relates to a method for operating such a furniture drive system.

[0002] Furniture drive systems with adjustable arm devices have been used for decades to move furniture flaps that are rotatable or pivotable around a horizontal axis or slidable along a vertical plane. Examples of such furniture fittings can be taken from WO 2012 / 155165 and WO 2011 / 020130.

[0003] Furthermore, furniture drive systems are known which have two separate components, namely a mechanical adjustment unit (including the drive) and an electric drive unit, examples of which can be taken from EP 3443191 and AU 519935 A1.

[0004] What is important about such furniture drive systems is that the same system can be used in the same way for movable furniture parts of different sizes and weights. For this purpose, individual parameters (e.g. forces) of the drive and / or electric motor can be set via an adjustment device. In conventional furniture drive systems, the action obtained from the drive may not be adapted to the movable furniture part to be driven. This can often lead to damage to the movable furniture part or even to accidents with the person operating the movable furniture part.

[0005] Further furniture drive systems are already known from the documents AU Utility Model No. 12191 and EP Patent Application No. 2 949 852 A1.

[0006] It is therefore an object of the present invention to create an improved furniture drive system and an improved method compared to the prior art, in particular in such a way that setting is easier and setting errors are avoided.

[0007] This problem is solved by a furniture drive system having the characteristic features of claim 1, according to which the control device has a determination device for determining a force that can be or is exerted on the adjustable arm device by at least one drive device, the at least one drive device having a damping device by means of which the closing movement and / or the opening movement of the adjustable arm device can be damped, and the determination device is configured to perform a damper test of the damping device.

[0008] Thus, the installer (or user) no longer has to rely solely on himself and make the correct settings on the drive device, but is supported by the furniture drive system itself by detecting the forces acting on the adjustment arm device (and thus on the movable furniture part in the assembled state), making it possible to easily identify whether the settings of the assembled furniture drive system and the movable furniture part are compatible.

[0009] Preferred embodiments of the invention are set out in the dependent claims and throughout the description.

[0010] The actuator may have multiple components or members that apply a force to the adjustment arm arrangement.

[0011] Preferably, the at least one drive device is configured with a force accumulator, preferably in the form of a spring assembly, which acts on the support on the one hand and, preferably indirectly, on the adjustment arm device on the other hand. Particularly preferably, this spring assembly has two separate compression springs.

[0012] Preferably, the force accumulator is configured to compensate for the gravity of the adjustable arm device and the furniture part connectable thereto and / or to move the adjustable arm device in the direction of a fully closed position and / or to move the adjustable arm device in the direction of a fully open position, so that the movable furniture part can be opened up to a certain angular position in which the movable furniture part remains balanced by the adjustable arm device and the force accumulator.

[0013] In addition to the energy accumulator, at least one drive device is configured to have a damping device by means of which the closing and / or opening movement of the adjustment arm device can be damped, which allows smooth closing and opening and in particular gentle reaching of the respective end positions.

[0014] Typically and preferably, the adjustable arm arrangement is configured to be movable between a first maximum position corresponding to a closed position between the moveable furniture part and the furniture cabinet, and a second maximum position corresponding to a maximum open position of the moveable furniture part relative to the furniture cabinet.

[0015] Basically, the damping device can damp the entire travel path of the adjustable arm arrangement, but it is preferably provided that damping is provided via the damping device in the travel section of the movable furniture part which is located before the closed position and the maximum opening position.

[0016] In particular, the (respectively) forwardly located moving section may be configured to correspond to a swivel angle range of the adjustable arm device (and thus of the indirectly movable furniture part) of 2° to 25°, preferably 5° to 15°.

[0017] As already mentioned, the drive has two components, for which a special device is available, i.e. on the one hand a force accumulator test can be carried out on the force accumulator and on the other hand a damper test can be carried out on the damper. Via the special device it is possible to carry out only one of these two tests. Preferably, the tests are arranged so that they can be carried out via the special device. If two tests are carried out, it is advantageous if first the force accumulator test is carried out and then the damper test is carried out.

[0018] For the purposes of specifically possible and preferably two specific or test, the following preferred, partially corresponding examples are provided.

[0019] Preferably, the specific device for the energy accumulator is configured with a sensor for measuring the power consumption of the electric motor, in particular a resistance sensor can be used, in which case it is also possible to detect the energy balance of the electric motor.

[0020] It is further preferred that the power consumption of the electric motor measured via the sensor can be compared with a comparison value or comparison value curve of the power consumption, preferably determined and / or stored in a reference run, by means of a control device, and that a deviation signal can be output if the measured power consumption and the comparison value or comparison value curve exceed a preferably determined threshold value.

[0021] The comparison value may be, for example, an energy balance. The threshold value may be percentage data, for example a maximum deviation of 5% may be stored as the threshold value.

[0022] The deviation signal can be output acoustically. Preferably, a visual indication signal can be displayed on the furniture drive system, preferably on the cover, via the control device in response to the output deviation signal. For example, a red LED light can be lit up in a corresponding display field as an indication signal.

[0023] Not only the output of the deviation signal is important, but also its result: in particular, it can be configured that when a deviation signal is output, the force acting from the force accumulator on the adjusting arm device is adjustable via a force accumulator and setting unit of the adjusting device.

[0024] For example, the energy accumulator and setting unit can include a rotatable setting gear, and the application point of the energy accumulator along the threaded spindle can be configured such that the torque acting on the adjustment arm can be adjusted by rotating the setting gear.

[0025] Preferably with respect to the damping device, the particular device is configured with an angle sensor for measuring the angular position of the adjustable arm device.

[0026] It is further preferred that the speed of the adjustment arm arrangement can be determined by the control device in the section of movement immediately preceding the closed position and / or the open position from values ​​measured by the angle sensor at different times.

[0027] According to a preferred embodiment, the speed determined via the angle sensor and a comparison value or comparison value course, which is preferably stored and / or determined in a reference run, can be compared by means of a control device, and a deviation signal can be output if the measured power consumption and the comparison value or comparison value course deviate, preferably by more than a determined threshold value.

[0028] In order to prevent the influence of the speed determination by the energy accumulator of the drive device, it is preferably designed such that during this determination the electric motor is decoupled or can be decoupled from the adjusting arm device, preferably by means of a freewheel clutch.

[0029] Also during the attenuator test, it is preferably arranged so that a visual indication signal can be displayed on the furniture drive system, preferably on the cover, depending on the deviation signal outputted via the control device.

[0030] Not only the output of the deviation signal is important, but also its result: in particular, when a deviation signal is output, it can be configured such that via the damper-setting unit of the adjusting device, the damping force, the damping value is adjustable in relation to the angular position of the adjusting arm device, relative to the support and / or for the damping path.

[0031] For example, the attenuator setting unit may be configured such that the relative position between the attenuator casing and the support can be set by switching a setting means, preferably in the form of a switch, which can be operated without tools, between two positions.

[0032] Generally, it is preferred that the adjusting arm device and the at least one drive device are part of the mechanical adjusting unit, and the electric motor is part of an electric drive unit, which is implemented as a component unit formed separately from the mechanical adjusting unit, and which can be configured to have a driver that can be driven by the at least one electric motor in order to transmit the torque of the electric motor to the adjusting arm device of the mechanical adjusting unit.

[0033] For the movement transmission and movement conversion, the electric drive unit can be designed with a transmission between the electric motor and the driver.

[0034] The transmission is preferably configured to include at least two transmission stages, a freewheel clutch and / or an overload clutch.

[0035] Also in the area of ​​mechanical adjustment units, movement transmission and movement translation are advantageous, and preferably a transmission mechanism is provided, which can transmit the force of the force accumulator to the adjustment arm arrangement.

[0036] In order to enable the adjustment arm device to be moved to close and to open, the transmission mechanism preferably has a control cam and a pressure roller biased by a force accumulator, the pressure roller being configured to be able to run along the control cam when the at least one adjustment arm is moved.

[0037] Preferably, the adjustment arm arrangement is further configured to have a movably supported actuator part for transmitting a force from the force accumulator to the adjustment arm.

[0038] In order to couple or connect the mechanical adjustment unit and the electric drive unit, the actuator part is preferably configured to have a transmission opening in which or which can be engaged by a driver that can be driven by an electric motor.

[0039] Patent protection is also claimed for a piece of furniture having a furniture cabinet and at least one furniture part movable, in particular around a horizontal axis, in particular in the form of an upward folding flap, an upward lifting flap or an upward pivoting flap, and a furniture drive system according to the invention.

[0040] The above-mentioned problem is also solved by a method according to claim 21, according to which a furniture drive system having the characteristic features of claim 1 according to the invention comprises a step of determining, by means of a specific device of the control device, a force that can be or is exerted by at least one drive device on the adjustable arm device, and by means of this specific device a damper test of the damping device is performed.

[0041] For the abovementioned energy storage test, the following steps are preferably provided: - measuring the power consumption of the electric motor via a sensor; - comparing the measured power consumption with a comparative value or a comparative value progression, preferably determined and / or stored in a reference run; - outputting a deviation signal if the measured power consumption and the comparison value or the comparison value curve deviate, preferably by more than a determined threshold value.

[0042] Preferably, a step is further provided in which, when a deviation signal is output, an adjustment or position adjustment of the force acting on the adjustment arm device from the force accumulator of the drive device is performed via a force accumulator and setting unit of the adjustment device.

[0043] For the above-mentioned damper test (which should preferably be carried out after the energy storage test) the following steps are preferably provided: - determining the speed of the adjustable arm device in a section of movement immediately preceding the closed and / or open position based on values ​​measured by the angle sensor at different times; - comparing the speed determined via the angle sensor with a comparison value or a comparison value progression, preferably stored and / or determined in a reference run; - outputting a deviation signal if the measured power consumption and the comparison value or the comparison value curve deviate, preferably by more than a determined threshold value.

[0044] Finally, preferably, further steps are provided when a deviation signal is output, for adjusting or positioning the damping force, for adjusting or positioning the damping start position in relation to the angular position of the adjustment arm device relative to the support, and / or for adjusting or positioning the damping path of the damping device of the drive device via a damper setting unit of the adjustment device.

[0045] In other words, the invention can be further described as follows: the energy accumulator test is carried out via a reference run in the form of an opening and closing movement. In a certain angle range (approximately in the intermediate region between the closed position and the completely open position (preferably in an angle range of 20°-90° between the end positions)), the motor current is measured via a corresponding resistance sensor. If the values ​​lie within a predefined (balanced) range (threshold value) during opening and closing, the energy accumulator adjustment is correct and no deviation signal is output. Possible deviations are displayed via a display on the cover.

[0046] The damper test is also carried out via at least one reference run. For this purpose (after successful completion of the energy accumulator test in order to avoid any resulting errors), in the end region of the opening and / or closing movement (where the energy accumulator is decoupled from the adjustment arm so that it does not work against the damper), the angular position is detected via a magnetic angle sensor and compared with a reference time. If there is a deviation from the setpoint, the damper must be adjusted stronger or weaker. This is also displayed accordingly via a display on the cover.

[0047] As a third variant, the special device may also be used to carry out a check of the bounce movement during (hard) closing or opening. For this purpose, the oscillatory angular position during the bounce movement is detected and correspondingly compared with a comparison value. In this case too, if a bounce error signal is output, the adjustment can be changed accordingly.

[0048] Further details and advantages of the invention are explained in more detail below with reference to exemplary embodiments shown in the drawings and on the basis of the description of the drawings. [Brief description of the drawings]

[0049] [Figure 1] FIG. 2 shows a schematic diagram of a piece of furniture with a furniture drive system for a furniture flap. [Figure 2a]FIG. 2 shows a mechanical adjustment unit with an adjustment arm arrangement and a force accumulator. [Figure 2b] FIG. 2b is a detailed view of FIG. 2a. [Figure 3a] FIG. 2 is a perspective view showing a mechanical adjustment unit. [Figure 3b] FIG. 13 is another perspective view showing the mechanical adjustment unit. [Figure 4a] FIG. 2 is a longitudinal section of the mechanical adjustment unit in the central open position. [Figure 4b] FIG. 13 is another longitudinal section of the mechanical adjustment unit in the central open position. [Figure 5a] FIG. 4b is a detailed view of FIG. 4a. [Figure 5b] FIG. 4b is a detailed view. [Figure 6a] 11A-11D show longitudinal sections of the mechanical adjustment unit in a furniture part position located before the maximum opening position, in which the damping start positions are respectively given. [Figure 6b] 13A-13D are longitudinal sections of the mechanical adjustment unit in a furniture part position located before the maximum opening position, in which the damping start positions are respectively given. [Figure 7a] 14A-14D show longitudinal sections of the mechanical adjustment unit in furniture part positions before the closed position, in which the damping start positions are respectively given. [Figure 7b] 4A-4D are further longitudinal sections of the mechanical adjustment unit in a furniture part position before the closed position, in which the damping start positions are respectively given; [Figure 8] FIG. 1 is a perspective view of a piece of furniture with an open, upwardly folding flap. [Figure 9] FIG. 1 is a perspective view of a furniture cabinet with furniture drive systems arranged on both sides. [Figure 10] FIG. 2 is a perspective view of a furniture drive system with a protective front plate. [Figure 11] FIG. 2 is a perspective view of the furniture drive system without the protective front, with the cover visible. [Figure 12] FIG. 2 is a perspective view of a mechanical adjustment unit and an electric drive unit. [Figure 13] FIG. 13 is a perspective view different from that of FIG. [Figure 14] FIG. 2 is a perspective view of an electric drive unit. [Figure 15] FIG. 15 is a perspective view different from that of FIG. [Figure 16] FIG. 2 is a perspective view showing details of the electric drive unit with all associated components.

[0050] FIG. 1 shows a piece of furniture 100 comprising a furniture cabinet 3, in which a furniture drive system 1 (furniture fitting) for moving a movably supported furniture part 2 is fixed to a side wall 3a of the furniture cabinet 3.

[0051] In the illustrated embodiment, the movable furniture part 2 has two furniture flaps 2a, 2b, a first furniture flap 2a is pivotally connected to the furniture cabinet 3 via at least two hinges 9a about a horizontally extending pivot axis and a second furniture flap 2b is pivotally connected to the first furniture flap 2a via at least two hinges 9b about a horizontally extending pivot axis.

[0052] The furniture drive system 1 comprises a support 4 to be fixed to a furniture cabinet 3, preferably to a side wall 3a of the furniture cabinet 3, and at least one adjustment arm 52 pivotable relative to the support 4, which adjustment arm 52 is connected to a movable furniture part 2, preferably to a second furniture flap 2b.

[0053] As can be seen, the furniture 100 in Fig. 1 is positioned at a distance relative to the ceiling 10. In Fig. 1, the adjustment arm 52 has taken up a relatively large swivel angle, which corresponds to the maximum open position OS of the movable furniture part 2.

[0054] In FIG. 2a the adjustment unit 1.1 of the furniture drive system 1 is shown in a side view; the mechanical adjustment unit 1.1 has a support 4 to be fixed to the furniture cabinet 3 and at least one adjustment arm 52 supported on the support 4 so as to be pivotable about a rotation axis X.

[0055] In the embodiment shown, the adjustable arm extension 11 is removably arranged on the adjustable arm 52, the adjustable arm extension 11 having two adjustable arm parts 11a, 11b which are slidable relative to one another. Preferably, the adjustable arm parts 11a, 11b are slidable telescopically relative to one another, and the first adjustable arm part 11a and the adjustable arm 52 are configured to be removably connectable. The second adjustable arm part 11b has a fastening device 12 which is removably connectable to a fitting part to be fixed to the movable furniture part 2 and which is preferably lockable and unlockable without tools.

[0056] For applying a force to the adjusting arm 52 of the adjusting arm arrangement 5, a force accumulator 6 is provided, which may for example comprise at least one coil spring, preferably at least one compression spring. Alternatively, the force accumulator 6 may comprise another force accumulator, for example a fluid force accumulator in the form of a gas compression spring.

[0057] The adjustment arm device 5 has a transmission mechanism 51 for transmitting the force of the force accumulator 6 to the at least one adjustment arm 52. Preferably, the transmission mechanism 51 has a control cam 53 and a pressure roller 54 biased by the force accumulator 6, and is configured such that the pressure roller 54 can run along the control cam 53 when the at least one adjustment arm 52 moves.

[0058] The control cam 53 may be arranged or formed in the adjustment arm 52 according to a preferred embodiment. Naturally, it is also possible to arrange the control cam 53 at another point in the transmission mechanism 51 of the adjustment arm arrangement 5.

[0059] In the case shown in Fig. 2b, the adjusting arm 52 is formed in one piece with an actuator part 58 for transmitting the force from the force accumulator 6 to the adjusting arm 52. The control cam 53 is formed in this actuator part 58. Furthermore, a transmission opening 59 is formed in this actuator part 58, in which a driver 31 which can be driven by an electric motor 30 engages or can engage.

[0060] The force of the force accumulator 6 acting on the at least one adjustment arm 52 can be set by means of the force accumulator setting unit 14. It is preferably configured as follows: the force accumulator-setting unit 14 has at least one pivotally supported setting wheel 14a, and the force of the force accumulator 6 acting on the at least one adjusting arm 52 can be set by pivoting the setting wheel 14a, and / or the energy accumulator and setting unit 14 has at least one threaded spindle 16 along which the application point 15 of the energy accumulator 6 is movable during operation of the energy accumulator and setting unit 14, and / or The support 4 has an end face with at least one opening 17a, through which at least one adjusting arm 52 projects in the open position, and a setting gear 14a of the energy accumulator-setting unit 14 can be operated laterally to the end face and through the opening 17a.

[0061] In Fig. 2b, the area circled in Fig. 2a is shown in an enlarged view. The transmission mechanism 51 has an intermediate lever 19, which is supported on the support 4 so as to be pivotable about a pivot axis 19a. A threaded spindle 16 is supported on the intermediate lever 19. By rotating the setting gear 14a of the energy accumulator-setting unit 14 with a tool, the threaded spindle 16 can be rotated, whereby the action point 15 of the energy accumulator 6 is moved along the threaded spindle 16. In this way, the relative distance between the action point 15 and the pivot axis 19a of the intermediate lever 19, and thus the torque of the energy accumulator 6 acting on the adjustment arm 52, can be increased and decreased.

[0062] The mechanical adjusting unit 1.1 further comprises at least one damping device 7 for damping the movement of at least one adjusting arm 52 of the adjusting arm arrangement 5. This damping device 7 together with the force accumulator 6 forms a drive A by means of which a force can be exerted on the adjusting arm arrangement 5.

[0063] Preferably, for the damping device 7, this is - configured as a fluid damper; and / or -has at least one piston-cylinder unit; and / or - can be actuated by at least one adjustment arm 52 during the closing movement; and / or At least one adjustment arm 52 is configured to be biased from the same side during both the opening movement O and the closing movement S.

[0064] In Fig. 3a the mechanical adjustment unit 1.1 is shown in a perspective view, in which the force of the energy accumulator 6 can be transmitted to at least one adjustment arm 52 by means of a transmission mechanism 51 of the adjustment arm arrangement 5. The energy accumulator-setting unit 14 can, for example, comprise a rotatable setting gear 14a, in which the application point 15 of the energy accumulator 6 can be set along the threaded spindle 16 by means of the rotation of the setting gear 14a and thus by means of a torque acting on the adjustment arm 52.

[0065] The mechanical adjusting unit 1.1 may furthermore comprise an assembly lock 20 for the unassembled adjusting arm 52, i.e. for an adjusting arm 52 to which a movable furniture part 2 has not yet been assembled, which makes it possible to limit the opening speed of the unassembled adjusting arm 52 and which prevents unintentional opening or sudden jumping out of the unassembled adjusting arm 52 due to the force of the force accumulator 6. It is preferably configured such that the assembly lock 20 comprises at least one centrifugal clutch 20a.

[0066] 3b shows the mechanical adjustment unit 1.1 in another (slightly offset) perspective view. In this view, the entire damping device 7 is clearly visible. This damping device 7 comprises a damper housing 71 and a damper piston 72.

[0067] Via an attenuator setting unit 8, the attenuation device 7 is positionable relative to the support 4. The attenuator setting unit 8 comprises setting means 8a (in the form of a switch) and a setting pin 8x. The setting pin 8x is fixedly connected to the support 4.

[0068] In FIG. 3 b the setting means 8 a has been tilted to the right, whereby the damping device 7 is in its maximum right position relative to the support 4 .

[0069] It can be seen in Fig. 3b that a first damping transmission element 5a is formed on the adjustment arm 52. This first damping transmission element 5a is made in the form of a protrusion pointing towards the damping device 7. In the position shown in Fig. 3b, the stop 55 is (still) spaced apart from a stop counter-element 74 formed on the damper housing 71.

[0070] A stop element 56 (in the form of a roller) is arranged on the adjusting arm device 5. This stop element 56 is (still) spaced apart from the second damping transmission element 5b, which is pivotably supported on the support 4 via an axle pin 57.

[0071] 4a to 7b show vertical longitudinal sections of the mechanical adjustment unit 1.1 in different positions, one after the other.

[0072] In Figure 4a and Figure 4b the adjustable arm device 5 is in the same open position. This corresponds to an approximately half-open movable furniture part 2. The opening angle of the adjustable arm 52 is somewhere in the range of 55° to 80°.

[0073] However, Figures 4a and 4b differ in that the damping device 7 is in a different position. In Figure 4b the damping device 7 is in its maximum position to the right. As can be seen from the associated enlarged view according to Figure 5b, the setting means 8a has been pivoted to the right about the setting pin 8x. This results in a relatively wide region of the setting means 8a being located between the damper housing 71 and the setting pin 8x.

[0074] In contrast to this, in Fig. 4a and in the associated Fig. 5a the setting means 8a of the attenuator setting unit 8 has been rotated by 90° to the left, so that a relatively narrow area of ​​the setting means 8a is located between the attenuator housing 71 and the setting axle pin 8x. The damping device 7 is in its maximum position to the left.

[0075] 4a to 5b the damping device 7 is unloaded and thus in a relaxed and extended position. The second pressure transmission element 5b abuts against the damper piston 72.

[0076] Comparing FIGS. 5 a and 5 b it can be seen that in addition to the translational sliding movement relative to the support 4 the damper housing 71 also undergoes a (slight) pivoting movement relative to the support 4 .

[0077] In Figures 6a and 6b (starting from the previous Figures 4a to 5b), an opening movement O of the adjustment arm device 5 is performed. As a result, the adjustment arm 52 is pivoted upwards. This opening movement O is performed until the stopper 55 of the first damper transmission element 5a contacts the stopper corresponding member 74. At this position, the damping start position D, respectively, is reached.

[0078] Since the damping device 7 is in different maximum positions in Figures 6a and 6b, the adjustment arm 52 assumes different angular positions at the respectively shown damping start position D. In particular, in Figure 6a an opening angle of approximately 108° is shown, whereas in Figure 6b an opening angle of 100° is shown.

[0079] As the opening movement O continues from the respective damping start position D, the damper piston 72 is pushed into the damper housing 71 via the stopper corresponding member 74, thereby causing the damping device 7 to exert its action. As soon as the damper piston 72 is fully inserted, the maximum opening position OS is reached (not shown).

[0080] Thereby, a travel section of the movable furniture part 2 which is located before the maximum opening position OS is damped, whereby the damping start position D is set differently via the damper and setting unit 8. Thereby, different opening angles for the start of the damping travel can be set.

[0081] The same principle applies to the closing move S.

[0082] In Figures 7a and 7b (starting from Figures 4a to 5b) a closing movement S of the adjusting arm arrangement 5 is taking place, whereby the adjusting arm 52 is pivoted downwards. This closing movement S is taken place until the stop element 56 comes into contact with the second damping transmission element 5b due to the pivoting movement of the adjusting arm 52 about the pivot axis X. In this position the damping start position D, respectively, is reached.

[0083] Since the damping device 7 is in different maximum positions in Figures 7a and 7b, the adjustment arm 52 assumes different angular positions at the respectively shown damping start position D. In particular, in Figure 7a an opening angle of approximately 22° is shown, whereas in Figure 7b an opening angle of just 33° is shown.

[0084] If the closing movement S is continued from this respective damping start position D, the second damping transmission element 5b pivots counterclockwise about the pivot pin 57 via the stop element 56, so that the damping transmission element 5b presses the damper piston 72 via the stop 55 and forces it into the damper housing 71, whereby the damping device 7 also exerts its effect. As soon as the damper piston 72 has fully advanced, the closed position SS is reached (not shown).

[0085] 8 shows the entire furniture 100 in a perspective view, in which the power supply unit 21 can be seen, via which the electric drive unit 1.2 (not visible here) can be supplied with energy.

[0086] Fig. 8 further shows detection devices 22 on both sides of the furniture cabinet 3 for detecting an overpressure movement and / or for triggering a closing movement S. When the movable furniture part 2 is in the closed position SS and the user presses on the movable furniture part 2, this is detected by the detection devices 22, which results in an opening movement O of the furniture drive system 1 being initiated via the control device 44 and the electric drive unit 1.2. With the movable furniture part 2 as open in Fig. 8, the user can directly press on one of the detection devices 22, which results in an opening movement S of the furniture drive system 1 being initiated via the control device 44 and the electric drive unit 1.2.

[0087] 9 shows in a perspective view only the furniture cabinet 3 with the furniture drive systems 1 arranged on either side of the furniture cabinet 3. The protective front 23 of the electric drive unit 1.2 is clearly visible.

[0088] In Fig. 10, a furniture drive system 1 with a mechanical adjustment unit 1.1 and an electric drive unit 1.2 is shown in a perspective view. These two units 1.1 and 1.2 are laterally removably connected to each other via their respective housings. Via a support 4, the entire furniture drive system 1 can be fixed to a furniture cabinet 3. The electric drive unit 1.2 has a protective front plate 23.

[0089] 11 also shows the furniture drive system 1 in a perspective view, but without the protective front panel 23, which allows an unobstructed view of the cover 24 which together form the housing of the electric drive unit 1.2. On the cover 24 of the furniture drive system 1 a visual indicator signal H can be displayed.

[0090] In figure 12 the electric drive unit 1.2 and the mechanical adjustment unit 1.1 are shown separated. The housing of the mechanical adjustment unit 1.1 is formed with a (curved) engagement opening 25, via which the actuator part 58 of the adjustment arm arrangement 5 can be engaged.

[0091] Correspondingly, in FIG. 13, which shows the furniture drive system 1 from a different perspective, the follower 31 can be seen protruding from the (curved) outlet opening 26 in the housing of the electric drive unit 1.2.

[0092] In FIG. 14, only the housing of the electric drive unit 1.2 is shown together with the cover 24.

[0093] In Fig. 15 the electric drive unit 1.2 is shown with the side facing the mechanical adjustment unit 1.1. The follower 31 is configured as a pin in the illustrated embodiment, which is supported in a limited sliding manner in a guide contour (outlet opening 26) formed in the housing. The follower 31 protrudes from the housing on the side facing the mechanical adjustment unit 1.1.

[0094] In FIG. 16 the electric drive unit 1.2 of the furniture drive system 1 is shown in a perspective detail view, the part of the cover 24 which faces the mechanical adjustment unit 1.1 being omitted.

[0095] The electric drive unit 1.2 comprises an electric motor 30 for electrically drivingly supporting the movement of a movable furniture part 2 which can be fastened to an adjustment arm 52. Furthermore, the electric drive unit 1.2 comprises a driver 31 which can be (indirectly) driven by the electric motor 30 in order to transmit the torque of the electric motor 30 to the mechanical adjustment unit 1.1 or to the adjustment arm 52 and possibly to the furniture part 2 connected thereto.

[0096] The mechanical adjustment unit 1.1 and the electric drive unit 1.2 are removably connectable to one another, so that the electric drive unit 1.2 can be easily connected to the mechanical adjustment unit 1.1 or disconnected from it.

[0097] The components of the electric drive unit 1.2 can be arranged in a housing which, as shown, comprises a cover 24. The housing abuts the mechanical adjustment unit 1.1 at least in certain areas and, in the example shown, separates the latter from the constituent units of the electric drive unit 1.2.

[0098] Instead of a housing, for example a mounting plate can also be used which does not surround the electric drive unit 1.2 but only defines and supports it on one side.

[0099] Between the electric motor 30 and the driving body 31, a transmission 32 is provided for converting the torque of the electric motor 30 into a rotational movement of the driving body 31 around a rotation axis 33. The transmission 32 has a plurality of transmission stages (a worm 40 and gears 34, 35, 36, 37, 38 and 39). The transmission stages 34 to 40 are engaged with each other through meshing. The transmission 32 further includes a freewheel clutch 41 incorporated in the gear 36 and an overload clutch 42 incorporated in the gear 39.

[0100] The electric drive unit 1.2 also has a dedicated damping device 43 for damping the movement of the follower 31 about the pivot axis 33.

[0101] Returning to FIG. 1, the following will be explained in more detail.

[0102] 1 also shows a schematic representation of a control device 44. This control device 44 can be formed separately from the furniture drive system 1. Preferably, this control device 44 is designed to be integrated into the furniture drive system 1. Particularly preferably, this control device 44 is arranged on a board which also forms the electric drive unit 1.2.

[0103] The control device 44 comprises a determination device 45 for determining the forces which can be or are exerted on the adjustment arm device 5 by the at least one drive device A.

[0104] The determination device 45 has a sensor 46 for measuring the power consumption of the electric motor 30. The sensor 46 can also be arranged on board and is signal-technically connected to the electric motor 30. The measured power consumption value E of the electric motor 30 is calculated based on a comparison value V (preferably determined in a reference run). E (For example, the determined threshold T E If there is a deviation (only one deviation), the deviation signal W is output.

[0105] The determination device additionally (or alternatively) comprises an angle sensor 47 for measuring the angular position of the adjustment arm device 5. The angle sensor 47 can also be arranged on the board and detects the angular position of the adjustment arm 52 of the adjustment arm device 5 at different times. The velocity G of the adjustment arm 52 determined from this is then compared to a comparison value V (preferably determined in a reference run). G (For example, the determined threshold T G If there is a deviation (only one deviation), the deviation signal W is output. [Explanation of symbols]

[0106] 1 Furniture Drive System 1.1 Mechanical adjustment unit 1.2 Electric drive unit 2 Movable furniture parts 2a 1st furniture flap 2b 2nd furniture flap 3. Furniture Cabinet 3a side wall 4 Support 5 Adjustment arm device 5a First damping transmission element 5b Second damping transmission element 51 Transmission Mechanism 52 Adjustable Arm 53 Control Cam 54 Pressure roller 55 Stopper 56 Stopper element 57 Axle pin 58 Actuator part 59 Transmission Aperture 6 Energy accumulator 7. Damping Device 71 Attenuator housing 72 Damping piston 73 Damping Means 74 Stopper / Compatible Parts 8 Attenuator setting unit 8a Setting method 8x setting pins 8b,8c Concave 9a Hinge 9b Hinge 10. Ceiling 11 Adjustable Arm Extension 11a First adjustment arm part 11b Second adjustment arm part 12 Fixation device 14 Energy storage and setting unit 14a Setting gear 15. Area of ​​action 16 Threaded Spindle 17a opening 19 Middle lever 19a Rotation axis 20 Assembly and fixing device 20a centrifugal clutch 21 Power supply unit 22 Detection device 23 Protective front plate 24 Cover 25 Engagement opening 26 Exit opening 30 Electric motor 31 Group 32 Transmission 33 Rotation axis 34 Gears (transmission stage) 35 Gears (transmission stage) 36 Gears (transmission stage) 37 Gears (transmission stage) 38 Gears (transmission stage) 39 Gears (transmission stage) 40 Worm (transmission stage) 41 Freewheel clutch 42 Overrunning clutch 43 Damping Device 44 Control device 45 Specific equipment 46 Sensors for measuring power consumption 47 Angle Sensor 100 Furniture A Drive Unit D Attenuation start position S closed movement O open movement SS closed position OS maximum open position X Rotation Axis H instruction signal E Power Consumption Value V E Comparison value (power consumption) V G Comparison value (speed) T E Threshold (power consumption) T G Threshold (speed) W Deviation signal G speed

Claims

1. A furniture drive system (1) for a movable furniture part (2), comprising: - a support (4) for mounting said furniture drive system (1) on a furniture cabinet (3); an adjustable arm device (5) movably supported on said support (4) and which can be coupled to said movable furniture part (2); an electric motor (30) which is coupled or can be coupled to said adjustment arm device (5), via which said adjustment arm device (5) is at least partially movable; at least one drive device (A) separate from said electric motor (30) and capable of exerting a force on said adjustment arm device (5); an adjustment device (8, 14) capable of adjusting the force that can be exerted on said adjustment arm device (5) by at least one said drive device (A); a control device (44) capable of controlling said electric motor (30); A furniture drive system (1) having the control device (44) has an identification device (45) for identifying a force that can be or is exerted on the adjustable arm device (5) by at least one of the drive devices (A), the at least one drive device (A) having a damping device (7) by means of which the closing movement (S) and / or the opening movement (O) of the adjustable arm device (5) can be damped, the identification device (45) being configured to perform a damper test of the damping device (7), A furniture drive system (1).

2. A furniture drive system as described in claim 1, wherein the adjustment arm device (5) is rotatably supported on the support body (4).

3. 2. The furniture drive system according to claim 1, characterized in that at least one of the drive devices (A) has a force accumulator (6) acting on the support (4) on the one hand and on the adjustable arm device (5) on the other hand.

4. A furniture drive system as described in claim 3, wherein the energy storage device (6) indirectly acts on the adjustment arm device (5).

5. A furniture drive system as described in claim 3, wherein the energy accumulator (6) is in the form of a spring assembly.

6. 2. The furniture drive system according to claim 1, characterized in that the specific device (45) comprises a sensor (46) for measuring a power consumption value (E) of the electric motor (30).

7. The power consumption value (E) of the electric motor (30) measured via the sensor (46) and a comparison value of the power consumption (V Ｅ ) or a comparison value curve can be compared by means of the control device (44), and the measured power consumption value (E) and the comparison value (V Ｅ 7. The furniture drive system according to claim 6, further comprising means for outputting a deviation signal (W) if the curve of the reference value deviates from the curve of the reference value (R).

8. The furniture drive system according to claim 7, wherein the comparison value (V E ) or the comparison value progression is determined and / or stored in a reference run.

9. The furniture driving system according to claim 7, wherein the deviation signal (W) can be output if the measured power consumption value (E) deviates from the comparison value (V E ) or the comparison value progression by more than a determined threshold value (T E ).

10. 8. The furniture drive system according to claim 7, characterized in that a visual indication signal (H) can be displayed on the furniture drive system (1) in response to the deviation signal (W) outputted via the control device (44).

11. A furniture drive system as described in claim 7, characterized in that a visual indication signal (H) can be displayed on the cover (24) in response to the deviation signal (W) output via the control device (44).

12. 8. The furniture drive system according to claim 7, characterized in that, when a deviation signal (W) is output, the force acting on the adjusting arm device (5) from the force accumulator (6) of the drive device (A) is adjustable via a force accumulator and setting unit (14) of the adjusting device (8, 14).

13. 2. Furniture drive system according to claim 1, characterized in that the identification device (45) comprises an angle sensor (47) for measuring the angular position of the adjustment arm device (5).

14. A furniture drive system as described in claim 13, characterized in that in the movement section located immediately before the closed position (SS) and / or open position (OS) of the adjustment arm device (5), the speed (G) of the adjustment arm device (5) can be determined from values ​​measured by the angle sensor (47) at different points in time using the control device (44).

15. The speed (G) determined via the angle sensor (47) and a comparison value (V Ｇ 15. The furniture drive system according to claim 14, characterized in that the measured speed (G) and the comparison value (VG) or the comparison value curve can be compared by means of the control device (44), and a deviation signal (W) can be output if the measured speed (G) and the comparison value (VG) or the comparison value curve deviate.

16. The furniture drive system according to claim 15, wherein the comparison value (V G ) or the comparison value progression is stored and / or determined in a reference run.

17. The furniture drive system according to claim 15, wherein the deviation signal (W) can be output if the measured speed (G) deviates from the comparison value (V G ) or from the comparison value progression by more than a determined threshold value (T G ).

18. 16. The furniture drive system according to claim 15, characterized in that a visual indication signal (H) can be displayed on the furniture drive system (1) in response to the deviation signal (W) outputted via the control device (44).

19. A furniture drive system as described in claim 15, characterized in that a visual indication signal (H) can be displayed on the cover (24) in response to the deviation signal (W) output via the control device (44).

20. 16. Furniture drive system according to claim 15, characterized in that when a deviation signal (W) is output, the damping force, the damping start position are adjustable relative to the support (4) and / or for the damping path as a function of the angular position of the adjusting arm device (5) via the damper and setting unit (8) of the adjusting device (8, 14).

21. 2. The furniture drive system according to claim 1, characterized in that the adjusting arm device (5) and the at least one drive device (A) are part of a mechanical adjusting unit (1.1), the electric motor (30) is part of an electric drive unit (1.2), the electric drive unit (1.2) is embodied as a component unit formed separately from the mechanical adjusting unit (1.1), and the electric drive unit (1.2) has a driver (31) that can be driven by the at least one electric motor (30) in order to transmit the torque of the electric motor (30) to the adjusting arm device (5) of the mechanical adjusting unit (1.1).

22. 22. Furniture drive system according to claim 21, characterized in that the electric drive unit (1.2) has a transmission (32) between the electric motor (30) and the driver (31).

23. 23. Furniture drive system according to claim 22, characterized in that the transmission (32) comprises at least two transmission stages (34, 35, 36, 37, 38, 39, 40), a freewheel clutch (41) and / or an overload clutch (42).

24. 4. The furniture drive system according to claim 3, further comprising a transmission mechanism capable of transmitting the force of the force accumulator to the adjustable arm device.

25. 25. The furniture drive system according to claim 24, characterized in that the transmission mechanism (51) comprises a control cam (53) and a pressure roller (54) biased by the force accumulator (6), the pressure roller (54) being capable of running along the control cam (53) when the at least one adjustment arm (52) is moved.

26. 25. Furniture drive system according to claim 24, characterized in that the adjustment arm device (5) has a movably supported actuator part (58) for transmitting force from the force accumulator (6) to the adjustment arm (52).

27. ​​The adjusting arm device (5) and at least one drive device (A) are part of a mechanical adjusting unit (1.1), the electric motor (30) is part of an electric drive unit (1.2), the electric drive unit (1.2) is implemented as a structural unit formed separately from the mechanical adjusting unit (1.1), the electric drive unit (1.2) has a driver (31) drivable by at least one of the electric motors (30) in order to transmit the torque of the electric motor (30) to the adjusting arm device (5) of the mechanical adjusting unit (1.1), The electric drive unit (1.2) has a transmission (32) between the electric motor (30) and the driver (31), the actuator part (58) has a transmission opening (59) in which a follower (31) drivable by the electric motor (30) engages or is engageable; 27. Furniture drive system according to claim 26, characterized in that

28. 4. Furniture drive system according to claim 3, characterized in that the force accumulator (6) is configured for compensating the gravity of the adjustable arm arrangement (5) and of the gravity of the furniture part (2) which can be coupled to the adjustable arm arrangement (5) and / or for moving the adjustable arm arrangement (5) in the direction of a fully closed position (SS) and / or for moving the adjustable arm arrangement (5) in the direction of a fully open position (OS).

29. The at least one of the drive devices includes a power storage device, A power storage test is performed via the specific device.

2. The furniture drive system according to claim 1.

30. A piece of furniture (100) comprising a furniture cabinet (3), at least one movable furniture part (2) and a furniture drive system (1) according to at least one of claims 1 to 29.

31. Furniture (100) as described in claim 30, wherein the furniture part (2) is movable around a horizontal axis.

32. Furniture (100) as described in claim 30, wherein the furniture part (2) is in the form of an upward folding flap, an upward lifting flap or an upward pivoting flap.

33. A method for operating a furniture drive system (1), comprising: - a support (4) for mounting said furniture drive system (1) on a furniture cabinet (3); an adjustable arm device (5) movably supported on said support (4) and which can be coupled to said movable furniture part (2); an electric motor (30) which is coupled or can be coupled to said adjustment arm device (5), via which said adjustment arm device (5) is at least partially movable; at least one drive device (A) separate from said electric motor (30), capable of exerting a force on said adjustment arm device (5) and comprising a damping device (7) capable of damping the closing movement (S) and / or the opening movement (O) of said adjustment arm device (5); an adjustment device (8, 14) capable of adjusting the force that can be exerted on said adjustment arm device (5) by at least one said drive device (A); a control device (44) capable of controlling said electric motor (30), - determining, by means of a determination device (45) of said control device (44), the forces which can be or are exerted on said adjustable arm device (5) by at least one said drive device (A), and performing a damper test of said damping device (7) by means of said determination device (45); A method comprising:

34. The method described in claim 33, wherein the adjustment arm device (5) is rotatably supported on the support (4).

35. Further steps, namely: - measuring, via a sensor (46), a value of the power consumption (E) of said electric motor (30); - The measured power consumption value (E) and a comparison value (V Ｅ ) or a comparison value progression; - the measured power consumption value (E) and the comparison value (V Ｅ ) or the comparison value curve, if there is a deviation, outputting a deviation signal (W); 34. The method of claim 33, comprising:

36. The method according to claim 35, wherein the comparison value (V E ) or the comparison value progression is determined and / or stored in a reference run.

37. The method according to claim 35, further comprising outputting said deviation signal (W) if said measured power consumption value (E) deviates from said comparison value (V E ) or from said comparison value progression by more than a determined threshold value (T E ).

38. Further steps, namely:

36. The method according to claim 35, further comprising a step of adjusting or adjusting the force acting on the adjusting arm arrangement (5) from the force accumulator (6) of the drive arrangement (A) via a force accumulator and setting unit (14) of the adjusting device (8, 14) when the deviation signal (W) is output.

39. Further steps, namely: - determining the speed (G) of said adjustable arm device (5) in the section of movement immediately preceding the closed position (SS) and / or the open position (OS) of said adjustable arm device (5) based on values ​​measured by the angle sensor (47) at different times; - the speed (G) determined via the angle sensor (47) and a comparison value (V Ｇ ) and comparing the comparison value history; - the measured velocity (G) and the comparison value (V Ｇ ) or the comparison value curve, if there is a deviation, outputting a deviation signal (W); 34. The method of claim 33, comprising:

40. The method of claim 39, wherein the comparison value (V G ) or the comparison value progression is stored and / or determined in a reference run.

41. The method according to claim 39, further comprising outputting said deviation signal (W) if said measured speed (G) deviates from said comparison value (V G ) or from said comparison value progression by more than a determined threshold value (T G ).

42. When the deviation signal (W) is output, - a step of adjusting the damping force or adjusting the position, - adjustment or alignment of the damping start position in relation to the angular position of the adjustment arm device (5) relative to the support (4), and / or - adjusting or positioning the damping path of the damping device (7) of the drive device (A) via the damper and setting unit (8) of the adjustment device (8, 14), 40. The method of claim 39, comprising:

Images