EP4330503A1

EP4330503A1 - Furniture drive system for a movable furniture part

Info

Publication number: EP4330503A1
Application number: EP22722399.7A
Authority: EP
Inventors: Matthias Grimm
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2021-04-30
Filing date: 2022-04-29
Publication date: 2024-03-06
Also published as: CN117222799A; JP2024516252A; WO2022226571A1; US20240044196A1; KR20230162098A; AT525030A1

Abstract

The invention relates to a furniture drive system (1) for a movable furniture part (2), said drive system comprising: a support (4) for mounting the furniture drive system (1) on a furniture carcass (3); an actuating arm device (5) which is movably mounted, preferably rotatably mounted, on the support (3) and which can be connected to the movable furniture part (2); an electric motor (30) which is connected or can be connected to the actuating arm device (5) and by means of which at least sections of the actuating arm device (5) can be moved; at least one drive device (A) which is separate from the electric motor (30) and by means of which a force can be exerted on the actuating arm device (5); an adjusting device (8, 14) by means of which the force, which can be exerted by the at least one drive device (A) on the actuating arm device (5), can be adjusted; and a control device (44) by means of which the electric motor (30) can be controlled, the control device (44) having a determining device (45) for determining the force which can be exerted or is exerted by the at least one drive device (A) on the actuating arm device (5), and the at least one drive device (A) having a damping device (7) by means of which a closing movement (S) and/or an opening movement (O) of the actuating arm device (5) can be damped, the determining device (45) being designed to carry out a damper analysis of the damping device (7).

Description

Furniture drive system for a movable furniture part

The present invention relates to a furniture drive system for a movable furniture part with a carrier for mounting the furniture drive system on a furniture body, an actuating arm device which is movably, preferably rotatably, mounted on the carrier and which can be connected to the movable furniture part, an electric motor which is connected or can be connected to the actuating arm device and via which the actuating arm device can be moved at least in sections, at least one drive device which is separate from the electric motor and with which a force can be exerted on the actuating arm device, an adjustment device with which the force which can be exerted on the actuating arm device by the at least one drive device can be adjusted, and a control device, with which the electric motor can be controlled. In addition, the invention relates to a piece of furniture with such a furniture drive system. The invention also relates to a method for operating such a furniture drive system.

Furniture drive systems with actuator arm devices have been used for many decades to move furniture flaps that can be rotated or pivoted about a horizontal axis or that are displaceable along a vertical plane. Examples of such furniture fittings can be found in WO 2012/155165 A2 and WO 2011/020130 A1.

In addition, furniture drive systems are known in which these systems have two structural units that are separate from one another, namely a mechanical control unit (including the drive device) and an electrical drive unit. Examples of this can be found in EP 3443 191 B1 and AT 519 935 A1.

With such furniture drive systems, it is important that the same systems can be moved with different sizes and weights Furniture parts can be used equally. For this purpose, individual parameters (e.g. force) of the drive device and/or of the electric motor can be set via the setting devices. With previous furniture drive systems, it can happen that the effect emanating from the drive device does not match the driven movable furniture part. In some cases, this can lead to damage to the movable furniture part or even to accidents involving a person operating the movable furniture part.

Other furniture drive systems are already known from the documents AT 12191 Ul and EP 2949 852 Al.

The object of the present invention is therefore to create an improved furniture drive system and an improved method compared to the prior art. In particular, adjustment should be made easier and errors in adjustment should be prevented.

This is solved by a furniture drive system with the features of claim 1. According to the invention, it is provided that the control device has a determination device for determining the force that can be exerted or is being exerted by the at least one drive device on the actuating arm device, and the at least one drive device has a damping device with which a closing movement and/or an opening movement of the actuating arm device can be damped, wherein the determination device is designed to carry out a damper test of the damping device.

Thus, the fitter (or an operator) is no longer on his own and must make the correct settings in the drive device, but the furniture drive system itself supports the fitter (or the operator) by the on the force acting on the actuating arm device - and thus on the movable furniture part in the assembled state - is detected. This makes it easy to see whether the settings of the installed furniture drive system match the furniture part to be moved.

Preferred embodiments of the present invention are indicated in the dependent claims and throughout the description.

The drive device can have a plurality of components or parts that apply force to the actuating arm device.

Provision is preferably made for the at least one drive device to have an energy accumulator, preferably in the form of a spring assembly, which acts on the one hand on the carrier and on the other hand, preferably indirectly, on the actuating arm device. This spring assembly particularly preferably has two separate compression springs.

It is preferably provided that the force accumulator is designed to compensate for a weight of the actuating arm device and the furniture part that can be connected to the actuating arm device and/or to move the actuating arm device in the direction of a fully closed position and/or to move the actuating arm device in the direction of a fully open position to move. The movable furniture part can thus be opened up to a certain angular position, in which the movable furniture part then remains in a state tared by the actuating arm device and the force accumulator.

In addition to the force accumulator, it is provided that the at least one drive device has a damping device with which a closing movement and/or an opening movement of the Actuating arm device can be damped. This enables smooth closing and opening and, above all, gentle reaching of the respective end position.

In general, it is preferably provided that the actuating arm device can be moved between a first maximum position, which corresponds to the closed position between the movable furniture part and the furniture body, and a second maximum position, which corresponds to the maximum open position of the movable furniture part relative to the furniture body.

In principle, it is possible for the damping device to dampen the entire movement path of the actuating arm device. However, it is preferably provided that the damping takes place via the damping device in a movement section of the movable furniture part upstream of the closed position and the maximum open position.

Specifically, it can be provided that the (respectively) upstream movement section corresponds to a pivoting angle range of the actuating arm device (and thus indirectly of the movable furniture part) of between 2° and 25°, preferably between 5° and 15°.

As already mentioned, the drive device has two components for which the determination device can be used: On the one hand, an energy store test can be carried out for the energy storage device and, on the other hand, a damper test can be carried out for the damping device. It is possible that only one of these two checks is carried out via the determination device. Provision is preferably made for tests to be carried out via the determination device. If both tests are carried out, it is advantageous if the energy accumulator test is carried out first and then the damper test. The following, partially identical, preferred exemplary embodiments are provided for the two concretely possible and preferred determinations or tests.

With regard to the energy accumulator, it is preferably provided that the determination device has a sensor for measuring the current consumption of the electric motor. Specifically, a resistance sensor can be used. An energy balance of the electric motor can also be recorded.

Furthermore, it is preferably provided that the current consumption of the electric motor measured via the sensor can be compared by means of the control device with a comparative value or comparative value profile of the current consumption, preferably determined and/or stored in a reference run, with a deviation preferably lying above a specified threshold value a deviation signal can be output from the measured current consumption from the comparison value or from the course of the comparison value.

The comparison value can also be an energy balance, for example. The threshold value can be a percentage, for example a maximum deviation of 5 percent can be stored as a threshold value.

The deviation signal can be output acoustically. Provision is preferably made for a visual information signal to be able to be displayed on the furniture drive system, preferably on a cover, via the control device as a function of the deviation signal that is output. For example, a red LED light can light up as a notification signal in a corresponding display field. It is not just the output of a deviation signal that is important, but also the consequence that follows: specifically, when the deviation signal is output, the force acting on the actuating arm device from the energy store can be adjusted via an energy accumulator adjustment unit of the adjustment device.

For example, it can be provided that the force accumulator adjustment unit comprises a rotatable adjustment wheel, the point of application of the force accumulator being adjustable along a threaded spindle by rotating an adjustment wheel and thus the torque acting on the actuating arm.

With regard to the damping device, it is preferably provided that the determination device has an angle sensor for measuring the angular position of the actuating arm device.

Provision is also preferably made for the control device to be able to determine a speed of the actuating arm device in a movement section immediately upstream of the closed position and/or the open position from the values measured by the angle sensor at different points in time.

According to a preferred exemplary embodiment, it is provided that the speed determined via the angle sensor can be compared by means of the control device with a comparative value or comparative value profile of the speed, preferably stored and/or determined in a reference run, with a deviation preferably lying above a specified threshold value a deviation signal can be output for the measured speed from the comparison value or from the course of the comparison value. In order to prevent the speed determination from being influenced by the force accumulator of the drive device, it is preferably provided that during this determination the electric motor is or can be decoupled from the actuating arm device, preferably by means of an overrunning clutch.

In the case of the damper test, too, it is preferably provided that a visual information signal can be displayed on the furniture drive system, preferably on a cover, via the control device as a function of the deviation signal that is output.

It is not only the output of a deviation signal that is important, but also the consequence that follows: Specifically, it can be provided that when a deviation signal is output via a damper setting unit of the setting device, the damping force, the damping start position in relation to an angular position of the actuating arm device relative to the carrier and/or with regard to of a damping path is adjustable.

For example, it can be provided that the relative position between a damper housing and the carrier can be adjusted with the damper adjustment unit, preferably by switching an adjustment means in the form of a switch, which can be actuated without tools, between two positions.

In general, it can preferably be provided that the actuating arm device and the at least one drive device are part of a mechanical actuating unit and that the electric motor is part of an electric drive unit, which is designed as a structural unit that is separate from the mechanical actuating unit and which can be driven by the at least one electric motor Driver for transferring a Having torque of the electric motor on the actuating arm device of the mechanical actuator.

For movement transmission and conversion, it can be provided that the electric drive unit has a gear between the electric motor and the driver.

It is preferably provided for this gear that it comprises at least two gear stages, an overrunning clutch and/or an overload clutch.

A movement transmission and conversion is also advantageous in the area of the mechanical actuating unit, with a transmission mechanism preferably being provided with which the force of the force accumulator can be transmitted to the actuating arm device.

In order to enable a tightening and opening movement of the actuating arm device, it is preferably provided that the transmission mechanism has a control cam and a pressure roller loaded by the force accumulator, the pressure roller being movable along the control curve when the at least one actuating arm moves.

Furthermore, it is preferably provided that the actuating arm device has a movably mounted actuating part for the transmission of a force from the force accumulator to the actuating arm.

In order to connect or link the mechanical actuating unit to the electric drive unit, it is preferably provided that the actuating part has a transmission opening into which the driver, which can be driven by the electric motor, engages or can engage. Protection is also sought for a piece of furniture with a furniture body, at least one furniture part that can be moved, in particular about a horizontal axis, in particular in the form of a fold-up flap, lift-up flap or high-bar flap, and a furniture drive system according to the invention.

The above object is also achieved by a method according to claim 21. Accordingly, in a furniture drive system with the features of the preamble of claim 1, the step of determining the force that can be exerted or exerted by the at least one drive device on the actuating arm device is provided by a determination device of the control device, with the determination device carrying out a damper test of the damping device.

The following steps are preferably provided for the said energy storage test:

- Measurement of the current consumption of the electric motor via a sensor,

- Comparing the measured power consumption with a comparative value or comparative value curve preferably determined and/or stored in a reference run and

- Outputting a deviation signal in the event of a deviation of the measured current consumption from the comparison value or from the comparison value, preferably lying above a fixed threshold value

Comparative Value History .

In addition, the step of setting or adjusting the force acting on the actuating arm device from a force storage device of the drive device via a force storage device setting unit of the setting device when a deviation signal is output is preferably provided. The following steps are preferably provided for the said damper test (preferably to be carried out after the energy store test):

- determining a speed of the actuating arm device in a movement section immediately upstream of the closed position and/or the open position based on values measured by an angle sensor at different points in time,

- Comparing the speed determined via the angle sensor with a comparative value or comparative value curve, preferably stored and/or ascertained in a reference run, and

Outputting a deviation signal when the measured speed deviates from the comparison value or from the course of the comparison value, preferably above a fixed threshold value.

Finally, the step of setting or adjusting the damping force, the damping start position based on an angular position of the actuating arm device relative to the carrier and/or a damping path of a damping device of the drive device via a damper setting unit of the setting device when the deviation signal is output is also preferably provided.

In partially different words, the present invention can also be described as follows:

The lift mechanism test is carried out using a reference run in the form of an opening and closing movement. In a certain angular range - which is approximately in a middle range between the closed position and the completely open position (preferably an angular range between 20° and 90° between the end positions) - the motor current is measured via a corresponding resistance sensor measured. If the opening and closing values are within a certain (calibrated) range (threshold value), the lift mechanism setting is correct and no deviation signal is output. Any discrepancy is indicated by a display on the cover.

The damper test is also carried out using at least one reference run. For this purpose - after the energy store test has been successfully completed in order to have no consequential errors - in an end area of the opening and/or closing movement (in which the energy store is decoupled from the actuating arm so as not to work against the damper), the angular position is determined via a magnetic Angle sensor recorded and compared with a reference time. If there is a deviation from a target value, the damper must be set stronger or weaker. This is also indicated accordingly via a display on the cover.

As a third variant, the determination device can also be used as follows: The rebound movement can be checked for (strong) closing or opening. For this purpose, the oscillating angular position is recorded during the rebound movement and correspondingly compared with a comparative value. Appropriate settings can also be changed here if an incorrect rebound signal is output.

Further details and advantages of the present invention are explained in more detail below on the basis of the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show in it:

1 shows a schematic of a piece of furniture with a furniture drive system for a furniture flap, 2a shows a view of a mechanical actuating unit with an actuating arm device and an energy accumulator,

Fig. 2b shows a detail from Fig. 2a,

Fig. 3a + 3b perspective representations of the mechanical control unit,

Fig. 4a + 4b longitudinal sections through the mechanical control unit in a middle open position,

Fig. 5a + 5b details of Figs. 4a and 4b,

Fig. 6a + 6b longitudinal sections through the mechanical control unit in a maximum open position upstream furniture part position, each of which

damping start position is given,

7a+7b longitudinal sections through the mechanical actuating unit in one of the closed positions upstream

Furniture part position, each of which

damping start position is given,

Fig. 8 perspective view of the furniture with open

fold-up flap,

9 perspective view of the furniture body with furniture drive systems arranged on both sides,

Fig. 10 in perspective with the furniture drive system

protective screen,

Fig. 11 in perspective the furniture drive system without

protective screen with a view of the cover,

12 perspective view of the mechanical control unit and the electric drive unit,

Fig. 13 shows a different perspective to Fig. 12,

14 perspective view of the electric drive unit,

Fig. 15 shows a different perspective to Fig. 14 and

16 perspective details of the electric drive unit with all relevant components.

Fig. 1 shows a piece of furniture 100 with a furniture body 3, with a furniture drive system 1 on a side wall 3a of the furniture body 3 (Furniture fitting) for moving a movably mounted furniture part 2 is attached.

In the exemplary embodiment shown, the movable furniture part 2 has two furniture flaps 2a, 2b, with a first furniture flap 2a being pivotable about a horizontal axis of rotation with the furniture body 3 via at least two hinges 9a and the second furniture flap 2b being pivotable about a horizontal axis of rotation via at least two hinges 9b is pivotally connected to the first furniture flap 2a.

The furniture drive system 1 has a carrier 4 to be fastened to the furniture carcass 3, preferably to the side wall 3a of the furniture carcass 3, and at least one actuating arm 52 which can be pivoted relative to the carrier 4 and which is connected to the movable furniture part 2, preferably to the second furniture flap 2b .

It can be seen that the piece of furniture 100 in FIG. 1 is arranged at a distance from the ceiling 10 of the room. In FIG. 1, the actuating arm 52 assumes a relatively large pivoting angle, which corresponds to the maximum open position OS of the movable furniture part 2.

2a shows the mechanical actuating unit 1.1 of the furniture drive system 1 in a side view, the mechanical actuating unit 1.1 having a carrier 4 to be fastened to the furniture body 3 and at least one actuating arm 52 which is pivotably mounted on the carrier 4 about an axis of rotation X.

In the exemplary embodiment shown, an actuating arm extension 11 is detachably arranged on the actuating arm 52, the actuating arm extension 11 having two actuating arm parts 11a, 11b which can be displaced relative to one another. It is preferably provided that the actuating arm parts 11a, 11b are telescopically displaceable relative to one another, the first actuating arm part 11a being connected to the Actuating arm 52 can be releasably connected. The second actuating arm part 11b has a fastening device 12, which can be releasably connected to a fitting part to be fastened to the movable furniture part 2, preferably locked and unlocked without tools.

For the application of force to the actuating arm 52 of the actuating arm device 5, a force accumulator 6 is provided which, for example, can have at least one helical spring, preferably at least one compression spring. Alternatively, the energy accumulator 6 can also have other energy accumulators, such as a fluid accumulator in the form of a gas pressure spring.

The actuating arm device 5 has a transmission mechanism 51 for transmitting a force from the force accumulator 6 to the at least one actuating arm 52 . Provision is preferably made for the transmission mechanism 51 to have a cam 53 and a pressure roller 54 loaded by the energy store 6, with the pressure roller 54 being movable along the cam 53 when the at least one actuating arm 52 moves.

According to a preferred exemplary embodiment, the cam 53 can be arranged or formed on the actuating arm 52 . It is of course also possible to arrange the control cam 53 at a different point in the transmission mechanism 51 of the actuating arm device 5 .

In the case shown in FIG. 2 b , the actuating arm 52 is in one piece with an actuating part 55 for transmitting a force from the energy accumulator 6 to the actuating arm 52 . The cam 53 is formed on this adjusting part 55 . In addition, the transmission opening 59 is formed in this actuating part 58, in which the driver 31, which can be driven by the electric motor 30, engages or can engage A force of the force accumulator 6 on the at least one actuating arm 52 can be adjusted by means of an energy accumulator adjustment unit 14 . It is preferably provided that

- The force accumulator adjustment unit 14 has at least one rotatably mounted adjustment wheel 14a, wherein a force of the energy accumulator 6 acting on the at least one adjustment arm 52 can be adjusted on the adjustment arm 52 by rotating the adjustment wheel 14a, and/or

- The force accumulator setting unit 14 at least one

Has threaded spindle 16, along which a point of application 15 of the force accumulator 6 is movable upon actuation of the force accumulator setting unit 14 and/or

- The carrier 4 has an end face with at least one opening 17a, through which the at least one actuating arm 52 protrudes in an open position, with a dial 14a of the

Force accumulator adjustment unit 14 can be actuated from a direction transverse to the end face through the opening 17a.

Fig. 2b shows the area circled in Fig. 2a in an enlarged view. The transmission mechanism 51 has an intermediate lever 19 which is mounted on the carrier 4 so that it can pivot about an axis of rotation 19a. The threaded spindle 16 is mounted on the intermediate lever 19. By rotating the adjustment wheel 14a of the force accumulator adjustment unit 14 using a tool, the threaded spindle 16 can be rotated, whereby the

Point of attack 15 of the force accumulator 6 moves along the threaded spindle 16. In this way, the relative distance between the point of application 15 and the axis of rotation 19a of the intermediate lever 19 and thus the torque of the force accumulator 6 acting on the actuating arm 52 can be increased or decreased.

The mechanical actuating unit 1.1 also includes at least one damping device 7 for damping a movement of the at least one Actuating arm 52 of the actuating arm device 5. This damping device 7 forms, together with the energy accumulator 6, the drive device A, with which a force can be exerted on the actuating arm device 5.

It is preferably provided for the damping device 7 that it

- Is designed as a fluid damper and / or

- Has at least one piston-cylinder unit and/or

- Can be acted upon by the at least one actuating arm 52 during a closing movement and/or

- Can be acted upon from the same side both during an opening movement 0 and during a closing movement S of the at least one actuating arm 52 .

3a shows the mechanical actuating unit 1.1 in a perspective view, with a force of the force accumulator 6 being able to be transmitted to the at least one actuating arm 52 by the transmission mechanism 51 of the actuating arm device 5. FIG. The force accumulator adjustment unit 14 can, for example, comprise a rotatable adjustment wheel 14a, the point of application 15 of the force accumulator 6 being adjustable along the threaded spindle 16 by rotating the adjustment wheel 14a and thus the torque acting on the adjustment arm 52.

The mechanical control unit 1.1 can also have a mounting lock 20 for the empty control arm 52, on which no movable furniture part 2 has been mounted, to limit a

Have opening speed of the empty actuator arm 52, wherein the assembly lock 20 prevents unintentional opening or deflection of the empty actuator arm 52 by a force of the force accumulator 6. It is preferably provided that the assembly lock 20 comprises at least one centrifugal clutch 20a. 3b shows the mechanical actuating unit 1.1 in a further (slightly offset) perspective view. The entire damping device 7 can be clearly seen in this illustration. This damping device 7 has the damper housing 71 and the damper piston 72 .

The damping device 7 can be adjusted relative to the carrier 4 via the damper adjustment unit 8 . The damper adjustment unit 8 has the adjustment means 8a (in the form of a switch) and the adjustment pivot 8x. The adjusting axle pin 8x is firmly connected to the carrier 4.

In FIG. 3b, the adjustment means 8a is pivoted to the right, as a result of which the damping device 7 is in a right-hand maximum position relative to the carrier 4.

It can be seen in FIG. 3b that a first damping transmission element 5a is formed on the actuating arm 52 . This first damping transmission element 5a is designed in the form of an extension which faces the damping device 7 . In the position shown in Fig. 3b, the stop 55 is (still) at a distance from the counterpart stop 74 formed on the damper housing 71.

A stop element 56 (in the form of a roller) is arranged on the actuating arm device 5 . This stop element 56 is (still) at a distance from the second damping transmission element 5b, which is pivotably mounted on the carrier 4 via the axle pin 57.

4a to 7b each show a vertical longitudinal section through the mechanical actuating unit 1.1. in different positions. In FIGS. 4a and 4b the actuating 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 actuating arm 52 is somewhere in the range between 55° and 80°.

However, FIGS. 4a and 4b differ in that the damping device 7 is in different positions. In Fig. 4b, the damping device 7 is in its right maximum position. As can be seen in the associated enlarged representation according to FIG. 5b, the adjustment means 8a is rotated to the right about the adjustment pivot pin 8x. As a result, there is a relatively wide area of the adjustment means 8a between the damper housing 71 and the adjustment pivot 8x.

In contrast, in FIG. 4a and in the associated FIG. 5a, the adjustment means 8a of the damper adjustment unit 8 is rotated 90° to the left. As a result, there is a relatively narrow area of the adjustment means 8a between the damper housing 71 and the adjustment pivot pin 8x. The damping device 7 is in its left maximum position.

In all positions according to FIGS. 4a to 5b, the damping device 7 is unloaded and thus relaxed and in the fully extended position. The second pressure transmission element 5b is in contact with the damping piston 72 .

A comparison between FIGS. 5a and 5b shows that the damper housing 71 has also carried out a (slight) pivoting movement relative to the carrier 4 in addition to a translatory displacement movement relative to the carrier 4 .

In FIGS. 6a and 6b--starting from the previous FIGS. 4a to 5b--an opening movement 0 of the actuating arm device 5 was carried out. As a result, the actuating arm 52 is pivoted upwards been. This opening movement 0 was carried out until the stop 55 of the first damping transmission element 5a made contact with the counterpart stop 74 . In this position, the damping start position D is reached.

Since the damping devices 7 are in different maximum positions in FIGS. 6a and 6b, the actuating arm 52 assumes a different angular position at the damping start position D given in each case. Specifically, an opening angle of approximately 108° is given in FIG. 6a, while an opening angle of 100° is given in FIG. 6b.

If the opening movement 0 is continued from this respective damping start position D, the damper piston 72 is pushed into the damper housing 71 via the stop counterpart 74, as a result of which the damping device 7 unfolds its effect. As soon as the damper piston 72 is fully retracted, the maximum open position OS is reached (not shown).

The movement section of the movable furniture part 2 upstream of the maximum opening position OS is thus damped, with the damping start position D being set differently via the damper setting unit 8 . This allows different opening angles to be set for the start of the damping movement.

The same principle also applies to the closing movement S.

Starting from FIGS. 4a to 5b, a closing movement S of the actuating arm device 5 was carried out in FIGS. 7a and 7b. As a result, the actuating arm 52 has been pivoted downwards. This closing movement S was carried out until the rotary movement of the actuating arm 52 about the axis of rotation X caused the stop element 56 to contact the second damping transmission element 5b contacted. In this position, the damping start position D is reached.

Since the damping devices 7 are in different maximum positions in FIGS. 7a and 7b, the adjusting arm 52 assumes a different angular position at the damping start position D given in each case. Specifically, in FIG. 7a there is an opening angle of approximately 22°, while in FIG. 7b there is an opening angle of just under 33°.

If the closing movement S is continued from this respective damping start position D, the second damping transmission element 5b is rotated counterclockwise about the pivot pin 57 via the stop element 56, as a result of which the damping transmission element 5b presses on the damper piston 72 via the stop 58 and pushes it into the damper housing 71 , Which in turn causes the damping device 7 to exert its effect. As soon as the damper piston 72 is fully retracted, the closed position SS is reached (not shown).

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

In Fig. 8 there is also a detection device 22 on both sides of the furniture body 3 for detecting an overpressing movement and/or for triggering a closing movement S. If the movable furniture part 2 is in the closed position SS and a user presses on the movable furniture part 2, this is detected by the detection device 22, whereupon an opening movement 0 of the furniture drive system 1 is initiated via the control device 44 and the electric drive unit 1.2. at As shown in FIG. 8, when the movable furniture part 2 is open, a user can press directly on one of the detection devices 22, whereupon a closing movement S of the furniture drive system 1 is initiated via the control device 44 and the electric drive unit 1.2.

In FIG. 9 only the furniture carcass 3 together with the furniture drive systems 1 arranged on both sides of the furniture carcass 3 is shown in a perspective view. The protective screen 23 of the electric drive unit 1.2 is clearly visible.

10 shows a perspective view of the furniture drive system 1, which has the mechanical actuating unit 1.1 and the electrical drive unit 1.2. These two units 1.1 and 1.2 are detachably connected to one another laterally via their respective housings. The entire furniture drive system 1 can be fastened to a furniture body 3 via the carrier 4 . The electric drive unit 1.2 has the protective screen 23.

11 again shows the furniture drive system 1 in perspective, but with the protective screen 23 being omitted, as a result of which the view of the cover 24 that forms the housing of the electric drive unit 1.2 is clear. A visual information signal H can be displayed on this cover 24 of the furniture drive system 1 .

In Fig. 12, the electrical drive unit 1.2 and the mechanical control unit 1.1 are shown separately. A (curved) grip opening 25 is formed in the housing of the mechanical actuating unit 1.1, via which gripping into the actuating part 58 of the actuating arm device 5 is possible.

This is consistent with FIG. 13, which shows a different perspective of the furniture drive system 1, consisting of a (curved) Outlet opening 26 in the housing of the electric drive unit 1.2 outstanding drivers 31 can be seen.

Only the housing of the electric drive unit 1.2 together with the cover 24 is shown in FIG.

15 shows the electric drive unit 1.2 with a view of the side facing the mechanical actuating unit 1.1. In the exemplary embodiment shown, the driver 31 is designed as a pin which is mounted in a guide contour (outlet opening 26) designed in the housing so that it can be displaced to a limited extent. The driver 31 protrudes beyond the housing on the side facing the mechanical control unit 1.1.

16 shows the electric drive unit 1.2 of the furniture drive system 1 in a perspective detail view, with the part of the cover 24 pointing in the direction of the mechanical actuating unit 1.2 being omitted.

The electric drive unit 1.2 includes an electric motor 30 for electromotive support of the movement of the movable furniture part 2, which can be attached to the actuating arm 52. Furthermore, the electric drive unit 1.2 comprises a driver 31 that can be (indirectly) driven by the electric motor 30 for transmitting a torque of the electric motor 30 to the mechanical actuating unit 1.2 or to the actuating arm 52 and a furniture part 2 that may be connected thereto.

The mechanical actuating unit 1.1 and the electrical drive unit 1.2 can be connected to one another in a detachable manner. As a result, the electric drive unit 1.2 can be connected to or separated from the mechanical actuating unit 1.1 in a simple manner. The components of the electric drive unit 1.2 can be arranged in a housing that encompasses the cover 24, as shown. The housing bears against the mechanical actuating unit 1.2 at least in regions and, in the exemplary embodiment shown, separates the mechanical actuating unit 1.1 from the structural unit of the electric drive unit 1.2.

Instead of a housing, a mounting plate can also be used, for example, which does not enclose the structural unit of the electric drive unit 1.2, but only delimits and supports it on one side.

A gear 32 is provided between the electric motor 30 and the driver 31 and converts a torque of the electric motor 30 into a pivoting movement of the driver 31 about an axis of rotation 33 . The gear 32 includes several gear stages (worm 40 and gears 34, 35, 36, 37, 38 and 39). The gear stages 34 to 40 each mesh with one another via gearing. Furthermore, the transmission 32 includes an overrunning clutch 41 which is integrated into the gear 36 and an overload clutch 42 which is integrated into the gear 39 .

The electric drive unit 1.2 also has its own damping device 43 for damping the movement of the driver 31 about the axis of rotation 33.

Returning to FIG. 1, the following is described in more detail.

1 also shows the control device 44 schematically. This control device 45 can be designed separately from the furniture drive system 1 . Provision is preferably made for this control device 45 to be integrated into the furniture drive system 1 . This control device 45 is particularly preferred arranged on a board that forms the electric drive unit 1.2.

The control device 44 has a determination device 45 for determining the force that can be exerted or has been exerted by the at least one drive device A on the actuating arm device 5 .

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 the circuit board and is connected to the electric motor 30 for signaling purposes. The measured power consumption value E of the electric motor 30 is compared with a comparative value V _E -preferably determined in a reference run. If there is a deviation (eg around a specific threshold value T _E ), a deviation signal W is output.

The determination device additionally (or alternatively) has an angle sensor 47 for measuring the angular position of the actuating arm device 5 . The angle sensor 46 can also be arranged on the circuit board and detects the angular position of the actuating arm 52 of the actuating arm device 5 at different points in time. The speed G of the actuating arm 52 determined therefrom is compared with a comparison value V _G - preferably determined in a reference run. If there is a deviation (eg around a specific threshold value T _G ), a deviation signal W is output. List of references:

1 furniture drive system

1.1 mechanical actuator

1.2 electric drive unit

2 movable furniture part

2a first furniture flap

2b second furniture flap

3 furniture body

3a side wall

4 carriers

5 actuator arm device

5a first damping transmission element

5b second damping transmission element

51 transmission mechanism

52 actuator arm

53 cam

54 pressure roller

55 stop

56 stop element

57 axle pin

58 actuator

59 transmission opening

6 energy stores

7 damping device

71 damper housing

72 damper pistons

73 Damping Agents

74 stop counterpart

8 damper adjustment unit

8a adjustment means

8x adjustment axle pin

8b, 8c recesses 9a hinges 9b hinges

10 space ceiling

11 actuator arm extension

11a first actuator arm part

11b second actuator arm part

12 fastening device

14 Lift mechanism adjustment unit

14a dial

15 point of attack

16 lead screw

17a opening

19 intermediate levers

19a axis of rotation

20 assembly lock

20a centrifugal clutch

21 power supply unit

22 detection device

23 protective screen

24 cover

25 engagement opening

26 exit port

30 electric motor

31 drivers

32 gears

33 axis of rotation

34 gear (gear stage)

35 gear (gear stage)

36 gear (gear stage)

37 gear (gear stage)

38 gear (gear stage)

39 gear (gear stage)

40 worm (gear stage)

41 overrunning clutch

42 overrun clutch 43 damping device

44 control device

45 investigative device

46 Sensor for measuring current consumption 47 Angle sensor

100 furniture

A driving device

D Dampening start position

S closing movement 0 opening movement

SS closed position

OS maximum opening position

X axis of rotation

H Advisory signal E Current consumption value

V _E comparison value (current consumption)

V _G comparison value (speed)

T _E Threshold (current consumption)

TG threshold (speed) W deviation signal G speed

Claims

patent claims

1. Furniture drive system (1) for a movable furniture part (2).

- a carrier (4) for mounting the furniture drive system (1) on a furniture body (3),

- an actuating arm device (5) which is movably, preferably rotatably, mounted on the carrier (3) and can be connected to the movable furniture part (2),

- An electric motor (30), which with the

Actuating arm device (5) is connected or can be connected and via which the actuating arm device (5) can be moved at least in sections,

- At least one of the electric motor (30) separate

Drive device (A) with which a force can be exerted on the actuating arm device (5),

- an adjusting device (8, 14) with which the force that can be exerted by the at least one drive device (A) on the actuating arm device (5) can be adjusted and

- a control device (44), with which the electric motor (30) can be controlled, characterized in that the control device (44) has a determination device (45) for determining the exerted by the at least one drive device (A) on the actuating arm device (5) or exerted force and the at least one drive device (A) has a damping device (7) with which a closing movement (S) and/or an opening movement (0) of the actuating arm device (5) can be damped, the determination device (45) being designed for this purpose to carry out a damper test of the damping device (7).

2. The furniture drive system according to claim 1, characterized in that the at least one drive device (A) has an energy accumulator (6), preferably in the form of a spring assembly, acting on the one hand on the carrier (4) and on the other hand, preferably indirectly, on the actuating arm device (5). .

3. Furniture drive system according to one of claims 1 to 2, characterized in that the determination device (45) has a sensor (46) for measuring the current consumption of the electric motor (30).

4. Furniture drive system according to claim 3, characterized in that the control device (44) compares the current consumption value (E) of the electric motor (30) measured via the sensor (46) with a comparison value preferably determined and/or stored in a reference run (VE ₎ or

comparison value profile of the current consumption is comparable, with a deviation of the measured current consumption value ( _E ) from the comparison value (VE ₎ or from the comparison value profile, a deviation signal (W) being able to be output, preferably above a specified threshold value (TE).

5. Furniture drive system according to claim 4, characterized in that a visual reference signal (H) can be displayed on the furniture drive system (1), preferably on a cover (24), via the control device (44) depending on the deviation signal (W) output.

6. Furniture drive system according to claim 4 or 5, characterized in that when the deviation signal (W) is output via a force accumulator setting unit (14).

Adjusting device (8, 14) from the force accumulator (6) on the

Actuating arm device (5) acting force is adjustable. 7. Furniture drive system according to claim 1 or 2, characterized in that the determination device (45) has an angle sensor (47) for measuring the angular position of the actuating arm device (5).

8. The furniture drive system according to claim 7, characterized in that a speed (G) of the actuating arm device (5) in one of the closed positions (SS) and/or the Open position (OS) immediately upstream movement section can be determined.

9. Furniture drive system according to claim 8, characterized in that by means of the control device (44) the speed (G) determined via the angle sensor (47) is compared with a comparison value (V _{G )} or comparison value profile, preferably stored and/or determined in a reference run speed (G) is comparable, with a deviation of the measured speed (G) from the comparison value (T _G) or from the course of the comparison value, preferably above a specified threshold value (T _G) , a deviation signal (W) being able to be output.

10. Furniture drive system according to claim 9, characterized in that a visual reference signal (H) can be displayed on the furniture drive system (1), preferably on a cover (24), via the control device (44) depending on the output deviation signal (W).

11. Furniture drive system according to claim 9 or 10, characterized in that when output deviation signal (W) via a damper adjustment unit (8) of

Setting device (8, 14) the damping force that Damping start position is adjustable based on an angular position of the actuating arm device (5) relative to the carrier (4) and/or with respect to a damping path.

12. Furniture drive system according to one of claims 1 to 11, characterized in that the actuating arm device (5) and the at least one drive device (A) are part of a mechanical actuating unit (1.1) and that the electric motor

(30) is part of an electric drive unit (1.2), which is designed as a structural unit that is separate from the mechanical actuating unit (1.1) and which has a driver that can be driven by the at least one electric motor (30).

(31) for transmitting a torque of the electric motor (30) to the actuating arm device (5) of the mechanical actuating unit (1.1).

13. Furniture drive system according to claim 12, characterized in that the electric drive unit (1.2) between the electric motor (30) and the driver (31) has a gear (32).

14. Furniture drive system according to claim 13, characterized in that the gear (32) comprises at least two gear stages (34, 35, 36, 37, 38, 39, 40), an overrunning clutch (41) and/or an overload clutch (42).

15. Furniture drive system according to one of claims 1 to 14, characterized in that a transmission mechanism is provided with which the force of the energy store can be transmitted to the actuating arm device.

16. Furniture drive system according to claim 15, characterized in that the transmission mechanism (51) has a control cam (53) and a pressure roller (54) loaded by the force accumulator (6). wherein the pressure roller (54) can be moved along the cam (53) when the at least one actuating arm (52) moves.

17. Furniture drive system according to claim 15 or 16, characterized in that the actuating arm device (5) has a movably mounted actuating part (58) for transmitting a force from the force accumulator (6) to the actuating arm (52).

18. Furniture drive system according to claim 13 and 17, characterized in that the actuating part (58) has a

Transmission opening (59) into which the dated

Electric motor (30) drivable driver (31) engages or can engage.

19. Furniture drive system according to one of the preceding claims, characterized in that the force accumulator (6) is designed to compensate for a weight of the actuating arm device (5) and the furniture part (2) that can be connected to the actuating arm device (5) and/or to to move the actuator arm device (5) towards a fully closed position (SS) and/or to move the actuator arm device (5) towards a fully open position (OS).

20. Furniture (100) with a furniture body (3), at least one furniture part (2) that can be moved, in particular about a horizontal axis, in particular in the form of a fold-up flap, lift-up flap or pivot-up flap, and a furniture drive system (1) according to at least one of the preceding claims .

21. Method for operating a furniture drive system (1), wherein the furniture drive system (1) - a carrier (4) for mounting the furniture drive system (1) on a furniture body (3),

- an adjusting arm device (5) which is mounted on the carrier (4) so that it can move, preferably rotate, and which can be connected to the movable furniture part (2),

- An electric motor (30), which with the

- At least one of the electric motor (30) separate

Drive device (A) with which a force can be exerted on the actuating arm device (5), with a damping device (7) with which a closing movement (S) and/or an opening movement (0) of the actuating arm device (5) can be damped,

- an adjustment device (8, 14) with which the force that can be exerted by the at least one drive device (A) on the actuating arm device (5) can be adjusted, and

- A control device (44) with which the electric motor (30) can be controlled, characterized by the step

- Determining the at least one drive device

(A) on the Stellarmvorrichtung (5) exercisable or exerted force by a determination device (45) of the control device (44), wherein the

Determining device (45) carries out a damper test of the damping device (7).

22. The method according to claim 21, characterized by the further steps:

- Measuring the power consumption of the electric motor (30) via a sensor (46), - Comparing the measured current consumption with a comparison value (VE ₎ preferably determined and/or stored in a reference run

Comparative value history and

- Outputting a deviation signal (W) in the event of a deviation, preferably above a fixed threshold value (T _E) , of the measured current consumption value (E) from the comparison value (V _E) or from

comparison value history.

23. The method according to claim 22, characterized by the step

Setting or adjusting the force acting from an energy store (6) of the drive device (A) on the actuating arm device (5) via an energy store setting unit (14) of the setting device (8, 14) when output

Deviation signal (W).

24. The method according to claim 21, characterized by the further steps:

- Determine a speed (G) of

Actuating arm device (5) in a movement section immediately upstream of the closed position (SS) and/or the open position (OS) based on values measured by an angle sensor (47) at different points in time,

- Comparing the speed (G) determined via the angle sensor (47) with a comparative value (V _{G )} or comparative value curve, preferably stored and/or ascertained in a reference run, and

- Outputting a deviation signal (W) if the measured speed (G) deviates from the comparison value (V _{G )} or from the course of the comparison value, preferably above a fixed threshold value (T _{G )} .

25. The method according to claim 24, characterized by the step of setting or adjusting

- the damping force,

- The damping start position based on an angular position of the actuating arm device (5) relative to the carrier (4) and/or

- A damping path of a damping device (7) of the drive device (A) via a damper setting unit (8) of the setting device (8, 14) when the deviation signal (W) is output.