EP1624773A1

EP1624773A1 - Piece of furniture comprising a movable part

Info

Publication number: EP1624773A1
Application number: EP04730799A
Authority: EP
Inventors: Edgar Huber; Uwe Scheffknecht
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2003-05-19
Filing date: 2004-05-03
Publication date: 2006-02-15
Also published as: US7331643B2; CN1787765A; US20060061245A1; MY140771A; AT502574A1; WO2004100718A1; AT502574B1; CN100512716C; JP4617310B2; JP2007502680A

Abstract

Disclosed is a piece of furniture comprising a movable part, especially a drawer or a door, a drive unit, and a device for mechanically transferring power from the drive unit to the movable part or the body of the piece of furniture, particularly a peg that is disposed on a lever which can be driven by the drive unit, so as to eject and/or retract the movable part. The device (4) for mechanically transferring power is placed inside a guideway (8) in order to transfer traction forces and pushing forces.

Description

Furniture with a movable furniture part

The present invention relates to a piece of furniture with a movable furniture part, in particular a drawer or door, a - in particular electrical - drive unit and a device for mechanical power transmission from the drive unit to the movable furniture part or the furniture body, in particular a pin arranged on a lever which can be driven by the drive unit , to eject and / or retract the movable furniture part, which is arranged for the transmission of tensile and thrust forces in a guideway.

Devices in which the movable furniture part can be ejected via a lever are used in particular in furniture with movable furniture parts which, for reasons of design or practical considerations, have no handle elements. The manual opening of such a furniture door or drawer is made possible for a user only after the driven opening of the movable furniture part over a first distance to form an engagement gap between the movable furniture part and the furniture body. For example, spring-loaded mechanisms (touch-latch) or drawers driven by an electric motor are known.

For example, from US 5,158,347 a cabinet with several handle-less drawers emerges, in which the drawer to be opened can be selected by entering a code and this is then partially removed from the cabinet via a pin attached to the drawer, on which a motor-driven eccentric roller rolls is moved out. One problem with this is the fact that the opening process for drawers with different fillings is different.

While a drawer with a certain minimum weight of filling material lies against the eccentric with the pin arranged on it over the entire intended acceleration distance and is thus accelerated by the eccentric in the intended manner, a drawer with this minimum weight becomes one after a partial distance of the entire intended acceleration distance experience high acceleration that the pin lifts off the eccentric and the drawer moves without drive, only under the influence of the frictional forces. The friction-induced dissipation of the kinetic energy of the drawer then reduces its speed until the pin arranged on it comes into contact with the driven eccentric again, which accelerates the drawer again. So overall there is an irregular, stuttering acceleration of the drawer. This is not only undesirable for reasons of user acceptance, but also accelerates the wear of the mechanical components of the furniture and the drawer.

In addition, the prior art described in US Pat. No. 5,158,347 has the disadvantage that the device shown there does not allow the opened drawer to be drawn into its closed end position. In order to maintain this function, an additional automatic feed mechanism would have to be provided, which is disadvantageous both in terms of cost and also because of the associated additional construction effort and the increased space requirement.

No. 3,862,788 shows the arrangement of the device for power transmission in a guideway. This has the advantage, inter alia, that an interruption of the contact between the device for mechanical power transmission and the movable furniture part is prevented during the ejection of the movable furniture part. Another advantage is that such a device also enables the movable furniture part to be drawn in on a distance upstream of the closed end position of the movable furniture part with the device used for ejection.

The problem with this, however, is that the length of the levers for mechanical force transmission shown in US Pat. No. 3,862,788 must be selected for each movable furniture part depending on the distance between the closed and the open end position.

The object of the invention is to provide a generic device which avoids problems known in the prior art.

This is achieved according to the invention in that the guideway has at least one position at which the device for mechanical force transmission can enter or exit the guideway.

This retains the respective advantages of the devices known in the prior art, while avoiding their disadvantages.

In principle, there are two advantageous constructive options for implementing the device according to the invention. It can either be and will be it is particularly preferred to arrange the drive unit and the device for mechanical power transmission on the furniture body and the guide track on the movable furniture part. On the other hand, there is also the possibility of arranging the drive unit and the device for mechanical power transmission on the movable furniture part and the guide track on the furniture body. Compared to the first possibility, this solution variant has the disadvantage that the mass to be accelerated and thus the inertia to be overcome are increased by the arrangement of the drive unit on the furniture part to be moved.

The drive unit can comprise an electric motor, for example. It can also be provided that the drive unit comprises a control or regulating device. A control device that is structurally separate from the drive unit can also be provided.

The guideway itself can be formed by any device that only allows a substantially linear movement. A plane guideway is understood to mean any realization of a path restricted to one plane by means of at least two boundaries which run at an approximately constant distance from one another.

Structurally, the guideway can be in one piece with the movable furniture part or the furniture body or in the form of a separate component attached to the movable furniture part or furniture body. For example, the guideway can be formed by a groove or recess. In the separate version, the guideway can be produced independently of the movable furniture part or furniture body, so that there is no need to intervene in existing production processes for the movable furniture part or the furniture body.

The drive unit can be triggered by sensors which detect a movement of the movable furniture part that is manually generated by a user. No pushbuttons or the like to be operated by the user are therefore required.

For example, optical sensors can be used. Other non-contact sensor types, such as e.g. B. capacitive or inductive sensors. However, the arrangement of contact sensors such as pressure switches can also be provided. In an advantageous embodiment of the invention it can be provided that the device for mechanical power transmission can be moved between two end positions. The end positions can preferably be detected by sensors, preferably optical sensors, the signals of which can be fed at least to the control unit. Then it makes sense to arrange the sensors near the end positions. In one end position, these sensors can be used to trigger the ejection or retraction process of the movable furniture part that is in contact with the device for mechanical force transmission, and the drive unit can be deactivated once the other end position has been reached. The drive unit is therefore only active as long as the device for mechanical power transmission is between its two end positions.

The device for mechanical power transmission can be formed, for example, by a pin which is arranged on a lever which can be pivoted, preferably to a limited extent between two end positions, the pin running in the guideway for exerting tensile and thrust forces. To reduce the frictional forces between the pin and the limits of the guideway, it can be provided that a roller is arranged on the pin.

It is preferably provided that the movable furniture part is movable between a closed and an open end position and that the device for mechanical force transmission between the closed and the open end position of the movable furniture part can be entered or exited from the guideway). As a result, the drive unit provides support only over a section of the entire distance between the closed and the open end position of the movable furniture part.

This can be implemented in a particularly simple manner in terms of construction in that the device for mechanical force transmission has a pin arranged on a lever that can be driven by the drive unit and that the length of the lever is less than the distance between the closed and the open end position of the movable furniture part.

For example, it can be provided that the length of the lever is less than half the distance, preferably less than one third of the distance, between the closed and the open end position of the movable furniture part. The triggering of the ejection function can take place in the handle-free design of the movable furniture part, for example, in that in its closed end position there is still some play for manual movement of the movable furniture part against the intended ejection direction. The movement of the device for mechanical power transmission in the direction of the sensor arranged in a first end position of the device caused by the manual movement of the movable furniture part is detected by the sensor in a manner familiar to the person skilled in the art, depending on the type of sensor, and this detection signal is supplied to the drive unit whereupon the drive unit begins the ejection process. In this embodiment, the user only has to exert pressure on the front of the movable furniture part in its closed end position to trigger the ejection process of the movable furniture part in order to cause the activation of the drive unit and consequently the ejection of the movable furniture part.

The drive unit is deactivated as soon as the sensor arranged in the second end position of the device for mechanical power transmission is triggered by the device for mechanical power transmission.

If the movable furniture part is equipped with handles, the activation of the ejection or The retraction function can of course be triggered simply by pulling or pushing the handle, which is detected by the sensors in the end positions of the device for mechanical power transmission and is reported to the drive unit.

Triggering by pulling or pushing can, for example, be implemented as follows:

The device for mechanical power transmission is a pin arranged on a driven lever. In the first end position of the device for mechanical power transmission, two optical sensors are arranged near the lever, which have activation paths of different lengths. The sensors register changes in the lighting status. If the movable furniture part is in its closed end position, the first sensor is covered by the lever, while the second sensor is free.

If tension is exerted on the movable furniture part, the lever releases the first sensor, which detects this and reports it to the control unit of the drive unit. The drive unit is then activated. The second sensor is not active in this process.

If pressure is exerted on the movable furniture part, it moves a little further into the furniture, which is made possible by the play provided for it. This also pushes the lever slightly closer to the two sensors. The first sensor remains covered and therefore inactive, while the second sensor, which was previously free, is now covered by the lever. He reports this change in the lighting status to the control unit, which then triggers the drive unit.

The function of the two sensors can of course also be taken over by a double sensor.

In a further exemplary embodiment, the following can be triggered:

The device for mechanical power transmission is designed as a pin arranged on a driven lever, a cam being arranged at the opposite end of the lever. If the lever is moved clockwise (counterclockwise), the cam also moves clockwise (counterclockwise). In the vertical position of the lever, the cam covers an optical sensor.

When pulling on the movable furniture part, the cam is pivoted clockwise and thus releases the sensor, which triggers the drive unit.

When pressure is exerted on the movable furniture part, the cam is pivoted counterclockwise and releases the sensor, which also triggers the drive unit. In order to prevent the triggering of a renewed switching process after the lever has been triggered and the resulting pivoting of the cam counterclockwise, the renewed signal from the sensor can, for example, be ignored for a short time by a timer.

It can of course also be provided that the sensors do not detect the manually caused movement of the movable furniture part indirectly through the movement of the mechanical device for power transmission, but rather directly detect the movement of the movable furniture part. It would also be possible to trigger the exertion of tension by a sensor which detects the first end position of the device for mechanical force transmission, and the exertion of pressure depending on a sensor arranged on the movable furniture part.

After the device for mechanical power transmission has emerged from the guideway, the further movement of the movable furniture part takes place solely under the influence of the frictional forces caused by the storage of the movable furniture part and any further manual exertion of force by the user.

Since the device for mechanical power transmission has left the guideway after the ejection process has ended, the movable furniture part must of course first be moved by the user in the direction of the closed end position to activate the pull-in function until the device for mechanical power transmission re-enters the guideway. Since the device for mechanical power transmission is moved by the user during a further manual movement of the movable furniture part by the executives exercised by the boundaries of the guideway, the sensor arranged in the second end position of the device for mechanical power transmission responds and activates the drive unit to trigger the feeder function.

From which distance of the movable furniture part the trigger function is triggered before its closed end position can be selected depending on the length of the entire distance between the closed and the fully open end position of the movable furniture part. For example, with a length of this distance of approximately 50 cm, the pull-in function can take place on the last 10 cm before the closed end position of the movable furniture part.

The invention further relates to a guideway for guiding a device for mechanical power transmission to a movable furniture part, which has at least one position at which the device for mechanical power transmission can be entered into or exited from the guideway. The guideway preferably has two ends and is open at at least one of the ends.

The guideway preferably runs in the region of the non-open (closed) end at an angle to the direction of movement of the movable furniture part. This allows the device for mechanical power transmission when pressure is exerted on the movable furniture part can be taken from the backdrop in the direction of pressure. This can be registered by a suitably arranged sensor and used to trigger the drive unit.

The guideway is preferably curved, wherein the curvature can vary. This enables optimal power transmission.

In an advantageous embodiment of the invention, it is provided that the tangent of the guideway in the region of the position at which the device for mechanical force transmission can enter or exit the guideway is parallel to the direction of movement of the movable furniture part. This allows the device for mechanical power transmission to enter or exit without problems.

The invention further relates to a method for ejecting and / or pulling in a movable furniture part, in particular a drawer or door, which is mounted on or in a piece of furniture, the furniture being a drive unit and a device for mechanical power transmission from the drive unit to the movable furniture part or Furniture body, in particular a pin arranged on a lever driven by the drive unit, and the device for mechanical force transmission for ejecting and / or pulling in the movable furniture part along a guide track arranged on the furniture body or on the movable furniture part exerts tensile and pushing forces on the movable furniture part, wherein the device for mechanical power transmission is moved out of the guideway after a distance covered by the movable furniture part from its closed end position.

In one embodiment of the method according to the invention, provision can be made for the movable furniture part to be pushed from the closed end position into the fully open end position via the device for mechanical force transmission by the drive unit.

In a further embodiment of the method according to the invention, it can be provided that the device for mechanical force transmission in the same guideway is moved in a first direction during ejection and in a second direction opposite to the first direction during retraction.

In a further advantageous embodiment of the invention it is provided that the control or regulation of the drive unit as a function of that in the drive unit is caused by the movement of the movable furniture part induced current and / or the induced voltage. This is a simple way to specifically influence the movement of the movable furniture part. The torque exerted on the movable furniture part is preferably determined via the current measurement. Alternatively or additionally, it can be provided that the speed of the movable furniture part is determined via the measured voltage. The influence can then take place as a function of the measured speed of the movable furniture part or as a function of the torque exerted on the movable furniture part.

For example, during the pulling-in process, the drive unit can counteract the movement of the movable furniture part until a predetermined or predeterminable current or voltage - and thus possibly a corresponding speed of the movable furniture part - is measured. This can be done in several ways. For example, the drive unit for braking the movable furniture part can be supplied with current. Alternatively, the drive unit for braking the movable furniture part could also be simply short-circuited. In both ways, a predetermined or predeterminable speed profile can be achieved during the retraction of the movable furniture part.

For example, it can be provided that after the device for mechanical force transmission is moved into the guideway, the movable furniture part is first braked approximately to a standstill and then pulled into the fully closed end position.

However, it can also be provided that the position of the movable furniture part or of the device for mechanical force transmission is detected by a position measuring device and used as a control or regulating variable. When using a position measuring device, the sensors for monitoring the end positions of the device for mechanical power transmission can of course be omitted. The speed of the movable furniture part can also be determined with the aid of the position measuring device. For example, it can be provided that the position measuring device is integrated in the electric motor. Such electric motors are commercially available.

The invention further relates to a movable furniture part, in particular a drawer or door, wherein either a drive unit and a device for mechanical power transmission or a guide track are arranged on the movable furniture part. It goes without saying that, in general, in the case of a movable furniture part arranged at floor level, instead of manual operation, it can be operated by the foot of a user.

An exemplary embodiment of the invention is described below using the figures in the accompanying drawings. Show it:

Fig. 1 is a first perspective view of an inventive

Ejection or retraction device, Fig. 2 is a second perspective view of an inventive

Ejection or retraction device, Fig. 3a, 3b, a first perspective view of an inventive

4a, 4b, a second perspective view of an inventive

5a, 5b a first perspective view of an inventive

Furniture and a detailed view G, Fig. 6a, 6b, a second perspective view of an inventive

Furniture and a detailed view H, FIGS. 7a, 7b to 12a, 12b each show a side view of a piece of furniture according to the invention with the side wall partially broken away, and one each

Detailed view A-F for this purpose for different stages of an opening and closing process according to the invention and FIGS. 13a, 13b a schematic representation of another one

Embodiment of the ejection or

Retraction device. FIG. 1 shows the perspective view of an exemplary embodiment of the ejection and drawing-in device according to the invention, irrespective of its arrangement in the furniture 1. A drive unit 3 which is shown schematically and which comprises an electric motor 17 and a control device 16 can be seen. In this exemplary embodiment, the device for mechanical power transmission 4 is designed as a pin 7 arranged on a lever 6 driven by the drive unit 3, the lever 6 in FIG. 1 being in its first end position. In this exemplary embodiment, the guideway 8 is defined as a recess in the setting 10 by a rear surface 11 and a front surface 12. The guideway 8 shown has open end, which forms the position 9 for the entry or exit of the pin 7 and a closed end. The placement of the pin 7 in its first end position can be selected by moving and fixing the link 10 in the direction of movement of the movable furniture part 2. In the example shown, a placement was selected in which the pin 7 is located in the horizontal region of the guideway 8. In contrast, a link 10 which is slightly shifted to the right in FIG. 10 would have the advantage that the pin 7 is already in its sloping region of the guideway 8 in its first end position. This facilitates the initial manual pull-out, since the pin 7 in the guideway 8 cannot be tilted. It is also particularly advantageous that this completely facilitates a complete manual pull-out and a subsequent manual closing movement. As a result, there is no restriction on the usability of the movable furniture part even in the event of a power failure. Also recognizable are the sensors 13 arranged in the end positions of the lever 6, which are connected via lines 15 to the drive unit 3, more precisely: to the control device 16 of the electric motor 17.

The view shown in FIG. 2 differs from that shown in FIG. 1 in that the lever 6 is in the second end position, in which the pin 7 is located at the position 9 of the guideway 8 designed as an opening, at which it comes out of the Guide path 8 can exit or enter into this.

Figures 3a and 3b show the arrangement shown in Figure 1 in its position relative to the movable furniture part 2, which is a drawer in this embodiment.

FIGS. 4a and 4b show the arrangement shown in FIG. 2 in its position relative to the movable furniture part 2.

FIGS. 5a and 5b show the arrangement shown in FIG. 2 and the drawer shown in FIG. 4 in their position in the furniture 1.

FIGS. 6a and 6b show the arrangement shown in FIG. 1 and the drawer shown in FIG. 3 in their position in the furniture 1.

An ejection process according to the invention will be explained with reference to FIGS. 7a and 7b to 12a and 12b using the exemplary embodiment shown there. The pull-in process according to the invention results from kinematic reversal: FIGS. 7a and 7b show a piece of furniture 1 with a plurality of movable furniture parts 2 designed as drawers. The drawers each have a handle element 14 on their front panel. At the level of the top drawer, the side wall was partially broken away to allow a view of the interior of the furniture 1. The drive unit 3 and the lever 6 driven by it, which are attached to the inside of the furniture 1 on the rear side of the furniture body 5, can be seen in the detailed view labeled A and shown in FIG. 7b. The guideway 8 is formed as a recess in a link 10 attached to the rear of the drawer. The drawer is in its closed end position. The pin 7, which cannot be seen in this figure, is located at the free end of the lever 6. The lever 6 is in its first end position and covers the upper sensor 13, which in this exemplary embodiment, like the lower sensor 13, is designed as an optical sensor.

FIGS. 8a and 8b show the furniture 1 after the drawer has been slightly moved out of its closed end position by a user (not shown). As a result, the link 10 attached to the drawer was also moved in this direction, as a result of which the pin 7 arranged in the guideway 8 and thus the lever 6 were moved through the link 10 from the first end position. As can be seen, the lever 6, which is also moved via the pin 7, was thereby moved away from the upper sensor 13, which was registered by the latter and reported to the drive unit 3 via the line 15.

As a result of the activation of the drive unit 3, the lever 6 is moved from the first end position shown in FIGS. 7a and 7b to the second end position shown in FIGS. 11a and 11b. FIGS. 8a and 8b to 10a and 10b show the movement between them in temporal successive representations of the moment. To accelerate the drawer, pressure (thrust) is exerted by the pin 7 which is moved with the lever 6 on the front surface 12 of the guideway 8, which accelerates the drawer in the direction of its fully open end position. An early decoupling of the drawer from the drive unit 3 is prevented by the rear boundary surface 11 of the guideway 8, which, if necessary, that is, if the drawer is accelerated too much by pulling on the pin 7 in the direction of the closed end position of the drawer. Since the clear distance between the guideway 8 formed by the two boundary surfaces 11, 12 is approximately the same size as the diameter of the pin 7 or the diameter of one if necessary arranged on the pin 7 roller, a jerky movement of the drawer is prevented during the ejection process.

When the lever 6 reaches the approximately horizontal position (second end position) shown in FIGS. 11a and 11b, the lever 6 covers the lower sensor 13, which this reports to the drive unit 3 via the line 15. In response to this, the drive unit 3 deactivates. In the approximately horizontal position of the lever 6, in this exemplary embodiment the pin 7 is located directly in front of the position 9 of the guideway 8, in which it moves out of the guideway 8 when the drawer moves further due to inertia in the backdrop 10 arranged recess can emerge.

As can be seen in FIGS. 12a and 12b, the drawer then moves at a final speed which is dependent on its total mass only in the direction of its fully open end position under the influence of frictional forces. The lever 6 remains in its horizontal second end position until the drawer is moved relative to the furniture body 5 by a user into the position shown in FIGS. 11a and 11b. The pin 7 thereby gets back into the guideway 8 and is accelerated by the forces exerted on it by the boundary surfaces 11, 12. As a result, the lever 6 connected to the pin 7 releases the lower sensor 13, which leads to the activation of the drive unit 3 and thus to the drawer's retraction into its closed end position in the furniture 1. The drawer arrives at its negligible final speed or zero speed in its fully closed end position, which prevents closing noises and protects both the drawer and the furniture 1. A predetermined or predeterminable speed profile of the movable furniture part 2 can also be realized via the voltage induced in the drive unit 3.

FIGS. 13a and 13b schematically show two further exemplary embodiments for triggering the device according to the invention by pulling or pushing. Details and details that have remained unchanged compared to the device shown in FIGS. 1 to 12 have been omitted:

Figure 13a shows the arrangement of two sensors 13 in the vicinity of the lever 6 in its approximately vertical position (first end position). The two sensors 13 have different activation paths. When pulling on the movable furniture part 2, the lever 6 is taken in a clockwise direction by the backdrop 10, not shown, and thus releases the lower sensor 13. This then triggers the trigger unit 3. When pressure is exerted on the movable furniture part 2, the lever 6 is taken counterclockwise by the link 10, for example by a bevel in the guideway 8, and thus covers the upper sensor 13. This then triggers the drive unit 3.

FIG. 13b shows the arrangement of a single sensor 13 below the lever 6, which is covered by a cam 18 in the approximately vertical position of the lever 6. When a pull is exerted on the movable furniture part 2, the lever 6 is taken clockwise by the backdrop 10, not shown, and thus releases the sensor 13. This then triggers the drive unit 3. When pressure is exerted on the movable furniture part 2, the lever 6 is taken counterclockwise by the link 10, for example by a bevel in the guideway 8, and thus releases the sensor 13. A spring 19 acting on the lever 6 prevents excessive deflection of the lever 6 from the vertical position. The sensor 13 triggers the drive unit 3, whereby the lever is moved clockwise and covers the sensor 13 again. In order to prevent the triggering of a renewed switching operation, the renewed signal from the sensor 13 when the movable furniture part 2 is extended can be briefly ignored by a timer.

Claims

claims:

1. Furniture with a movable furniture part, in particular a drawer or door, a - in particular electrical - drive unit and a device for mechanical power transmission from the drive unit to the movable furniture part or the furniture body, in particular a pin arranged on a lever which can be driven by the drive unit, for ejection and / or retraction of the movable furniture part, which is arranged for the transmission of tensile and pushing forces in a guideway, characterized in that the guideway (8) has at least one position (9) at which the device for mechanical force transmission (4) in the guideway (8) can be entered or exited.

2. Furniture according to claim 1, characterized in that the drive unit (3) and the device for mechanical power transmission (4) are arranged on the furniture body (5) and the guide track (8) is arranged on the movable furniture part (2).

3. Furniture according to claim 1, characterized in that the drive unit (3) and the device for mechanical power transmission (4) are arranged on the movable furniture part (2) and the guide track (8) is arranged on the furniture body (5).

4. Furniture according to one of claims 1 to 3, characterized in that the furniture (1) has a control or regulating unit for controlling or regulating the drive unit (3).

5. Furniture according to claim 4, characterized in that the furniture (1) has at least one sensor (13), the signals of which can be fed at least to the control unit.

6. Furniture according to one of claims 1 to 5, characterized in that the device for mechanical power transmission (4) is movable between two end positions.

7. Furniture according to claim 6, characterized in that the end positions can be detected by sensors (13), preferably optical sensors, the signals of which can be fed at least to the control unit.

8. Furniture according to one of claims 1 to 7, characterized in that the drive unit (3) comprises an electric motor.

9. Furniture according to one of claims 1 to 8, characterized in that the device for mechanical power transmission (4) has a pin (7) on which a roller is arranged.

10. Furniture according to one of claims 1 to 9, characterized in that the drive unit (3) has a current measuring device and / or a voltage measuring device and / or a position measuring device.

11. Furniture according to one of claims 1 to 10, characterized in that the movable furniture part is movable between a closed and an open end position and that the device for mechanical power transmission (4) between the closed and the open end position of the movable furniture part (2) can enter or exit the guideway (8).

12. Furniture according to one of claims 1 to 11, characterized in that the device for mechanical power transmission (4) has a pin (7) arranged on a lever (6) which can be driven by the drive unit (3) and that the length of the lever ( 6) is smaller than the distance between the closed and the open end position of the movable furniture part (2).

13. Furniture according to claim 12, characterized in that the length of the lever (6) is less than half the distance, preferably less than a third of the distance, between the closed and the open end position of the movable furniture part (2).

14. Furniture according to claim 10, characterized in that the position measuring device is integrated in the electric motor.

15. guideway for guiding a device for mechanical power transmission on a movable furniture part, in particular according to one of claims 1 to 14, characterized in that it has at least one position (9) at which the device for mechanical power transmission (4) in the guideway (8) can be entered or exited from it.

16. guideway according to claim 15, characterized in that it is curved and preferably has a varying curvature.

17. Guide track according to claim 15 or 16, characterized in that the tangent of the guide track (8) in the region of the position (9) is parallel to the direction of movement of the movable furniture part (2).

18. guideway according to one of claims 15 to 17, characterized in that the guideway (8) is a flat curve.

19. Guideway according to one of claims 15 to 18, characterized in that the guideway (8) is formed by a groove or recess.

20. Guide track according to one of claims 15 to 19, characterized in that the guide track (8) is formed in a separate component which can be fastened to the movable furniture part (2) or to the furniture body (5).

21. guideway according to one of claims 15 to 20, characterized in that the guideway (8) has two ends and is open at least one of the ends.

22. Guideway according to claim 21, characterized in that the guideway (8) extends obliquely to the direction of movement of the movable furniture part (2) in the region of the closed end.

23. Movable furniture part, in particular drawer or door, stored in or on a piece of furniture, in particular according to one of claims 1 to 14, characterized in that on the movable furniture part (2) either a drive unit (3) and a device for mechanical power transmission (4th ) or a guide track (8), preferably according to one of claims 15 to 22, are arranged.

24. A method for ejecting and / or pulling in a movable furniture part, in particular a drawer or door, which is mounted on or in a piece of furniture, in particular according to one of claims 1 to 14, the furniture being a drive unit and a device for mechanical power transmission from the Drive unit on the movable furniture part or the furniture body, in particular a pin arranged on a lever driven by the drive unit, and the device for mechanical power transmission to eject and / or retract the movable furniture part along a guide track arranged on the furniture body or on the movable furniture part, in particular according to one of claims 15 to 22, exerts tensile and pushing forces on the movable furniture part, characterized in that the device for mechanical Power transmission (4) is moved out of the guideway (8) after a distance covered by the movable furniture part (2) from its closed end position.

25. The method according to claim 24, characterized in that the device for mechanical power transmission (4) is moved into the guideway (8) after a distance traveled by the movable furniture part (2) from its fully open end position.

26. The method according to claim 24 or 25, characterized in that the device for mechanical power transmission (4) in the same guideway (8) is moved during ejection in a first direction and during retraction in a second direction opposite to the first.

27. The method according to any one of claims 24 to 26, characterized in that the movable furniture part (2) via the device for mechanical power transmission (4) is pushed by the drive unit (3) from its closed end position into its fully open end position.

28. The method according to any one of claims 24 to 27, characterized in that the control or regulation of the drive unit (3) in dependence on the in the drive unit (3) by the movement of the movable furniture part (2) induced current.

29. The method according to claim 28, characterized in that the speed of the movable furniture part (2) is determined via the current measurement.

30. The method according to claim 28 or 29, characterized in that during the pulling-in process, the drive unit (3) counteracts the movement of the movable furniture part (2) until a predetermined or predeterminable current is measured.

31. The method according to claim 30, characterized in that the drive unit (3) for braking the movable furniture part (2) is supplied with current.

32. The method according to claim 30, characterized in that the drive unit (3) for braking the movable furniture part (2) is short-circuited.

33. The method according to any one of claims 24 to 32, characterized in that the movable furniture part (2) after moving the device for mechanical power transmission (4) into the guideway (8) first decelerated approximately to a standstill and then into the fully closed End position is pulled.