EP2373865A2

EP2373865A2 - Drive apparatus for moving a sliding door by motor and method for actuating the drive apparatus

Info

Publication number: EP2373865A2
Application number: EP09751841A
Authority: EP
Inventors: Frank Nuttelmann; Werner Ihnofeld; Andreas Montecchio; Steffen Feld; Petra Neumüller
Original assignee: Hettich Heinze GmbH and Co KG
Current assignee: Hettich Heinze GmbH and Co KG
Priority date: 2008-12-10
Filing date: 2009-10-23
Publication date: 2011-10-12
Also published as: WO2010066498A3; WO2010066498A2; EP2453093A1

Abstract

A drive apparatus (1) for moving - in particular for opening and/or closing - moving furniture parts by motor, said apparatus being designed, in particular, for opening and/or closing a sliding door (2) on an item (3) of furniture having at least one or more sliding doors (2), and said apparatus having the following: a mounting base (4) which can be fixed to the item of furniture and to which at least one electric motor (6) is fixed, said electric motor acting on the sliding door (2) by means of a gear arrangement, wherein the gear arrangement has two gear elements which disengage after an predefined sliding movement of the furniture part, in particular of the sliding door, and re-engage with one another again in the event of subsequent closing of the furniture part, in particular of the sliding door, and/or wherein the gear arrangement is designed to disengage from the furniture part, in particular from the sliding door, after a predefined sliding movement of the furniture part, in particular of the sliding door, and to re-engage with said furniture part in the event of subsequent closing of the furniture part, in particular of the sliding door.

Description

Drive device for moving a sliding door and method for driving the drive device

The invention relates to a drive device for motor moving - in particular for opening and / or closing - movable furniture parts of furniture, which is designed in particular for opening and / or closing a sliding door on a at least one or more of the sliding doors having furniture and a method for Driving the drive device.

It is known to accelerate movable furniture parts by means of electric motor driven drive devices. Reference is made to the prior art to DE 2 0 2006 006 190 Ul and DE 2 0 2006 006 189 Ul.

The known solutions are not or not optimal for driving sliding doors.

Against this background, it is the object of the invention to provide a drive device for movable furniture parts, which is particularly suitable for use on sliding doors particularly advantageous.

The invention solves this problem by the subject matter of claim 1.

Thereafter, the drive device has a fixable to the furniture mounting base on which at least one electric motor is fixed, which acts on the sliding door via a gear arrangement, wherein the gear arrangement two after a predetermined sliding path of the furniture part, in particular the sliding door, out of engagement and at a subsequent closing of the furniture part, in particular the sliding door, again engaging each other, having gear elements, and / or wherein the gear assembly is adapted to a predetermined sliding path of the furniture part, in particular the sliding door, with the furniture part, in particular especially the sliding door, out of engagement and at a subsequent closing of the furniture part, in particular the sliding door to get back into engagement with this.

Advantageous embodiments of the invention can be found in the dependent claims.

This arrangement has the particular advantage that the motor can be fully energized the entire distance from the closed position to the maximum opening position that can be reached by it - that is to say that the sliding door can be maximally accelerated in only a short path. During the acceleration process from 0 to maximum, the current preferably increases according to a ramp function. This results in a nearly constant acceleration.

In addition, the drive device can be kept relatively small and it is not necessary to extend beyond the maximum opening path of the sliding door.

It has also been found that the user already already facilitates the handling by supporting the sliding door over the first part of its opening path, and that further opening of the sliding door only slightly increases the ease of use.

It is particularly advantageous if the drive device has a synchronization and / or pre-acceleration device which is designed to synchronize and / or pre-accelerate the decoupled transmission elements during a closing operation, since this protects the transmission and improves the synchronization of the furniture part becomes. Furthermore, the pre-acceleration achieves a gently starting rotational movement instead of a sudden onset of rotational movement. In addition, less noise.

It is particularly advantageous for use on a sliding door, it is when the engageable and disengageable transmission elements are designed as a rotatable gear and a meshing, linearly displaceable rack, because these elements are inexpensive and compact housed on a mounting base (or in a housing) and can be easily brought in and out of engagement.

In this case, it is advantageous if the synchronization and / or Vorbeschleuni- supply device is designed to vorzubeschleunigen the gear in a closing operation before the engagement of the teeth of these elements, in order to protect the gear assembly from damage in particular by very quickly thrown sliding doors to protect.

The power transmission from the output of the engine to the gear can be done in particular via a pair of bevel gears. It is conceivable under certain conditions, no self-locking, that the drive can also be done via a worm gear. There are also other embodiments of the power transmission from the engine to the transmission for operating the sliding door conceivable.

The attachment of the drive unit can on the one hand to the rail arrangement, e.g. the guide rail or the running profile of the furniture and on the other hand done directly on the cover plate. In addition, the drive unit may be located on or under the cover plate,

Preferably, a rack segment is displaceably guided on the rack, which remains in engagement with the gear even after disengaging the rack and the gear. By means of this simple structural means, a synchronization of the two disengaged gear parts rack and toothed wheel is achieved in a particularly advantageous manner.

Further advantageously, a control cam is formed or arranged on the mounting base (or on the housing), in which a pin engages, which is formed on a rotatable relative to the gear Laufwegbegrenzungsteil. In this way, a particularly simple and precise alternative embodiment of the angle-of-rotation limiting device is provided. Kinematic reversals of this design are conceivable. A translational guide of the pin for forming a Laufwegbegrenzung is also conceivable.

The power transmission from the output of the motor to the gear can preferably be done via a pinion Kronenradpaar. It is conceivable under certain conditions, no self-locking, that the drive can also be done via a worm gear. There are also other embodiments of the power transmission from the engine to the transmission for actuating the moving Möbelteüs conceivable.

In addition to the use of a capacitive or inductive linear displacement sensor, a rotary or linear potentiometer for position detection can also be used.

The rack segment assumes a control function in the drive device and can therefore also be referred to as a control rack. It controls the correct engagement of the gear in the drive part of the rack when re-engaging the movable furniture part with the drive device. The control rack brings about a rib on the gear and a control pin on the control rack, the drive gear with the rack accurately back into engagement, Furthermore, this arrangement is used to pre-acceleration of the drive when re-engaging the rack with the gear.

In order to optimize the noise reduction, it is necessary to prevent the structure-borne sound of an inner case from continuing directly into an outer case. From the outer housing, the sound could otherwise be transferred to the rail of the guide assembly and on the furniture body. In particular, the furniture body acts as a "resonance chamber" and it would occur without measures to reduce noise annoying for the user. In particular, by a drive which is preferably used in bedrooms, almost no noise emissions may go out. To reduce noise, an elastic element between the inner and outer ßengehäuse is used, that preferably both housing parts only linear, not flat, touched. A point-like contact between the two housing parts by the Tween elastic element in the sense of a cone is also conceivable. Again, the low contact surface has a positive, noise-reducing effect.

It is advantageous if no continuous planar contact between the elastic element and the inner housing or the outer housing is provided but when the elastic element rests in particular areas only linearly on the inner housing and / or the outer housing. Preferably, the shape of the elastic element is chosen so that the components to be decoupled are not connected directly, but the material meets at an angle to the two parts to be decoupled, which is preferably between 10 ° and 80 °. The angle allows the elastic member or element much easier to avoid the vibrations to be damped, as it would do a direct connection. A direct connection would only stress the material on pressure, the "beveled" connection loads the material (also) to bending.

Preferably, the at least one elastic element is made of a material having a relatively high internal damping. For example, it is a thermoplastic elastomer (TPE). This material contributes to a good soundproof design.

The invention also provides the methods specified in claims 30 to 34 for controlling the drive device, whose particular advantages are explained in detail in the following description of the figures.

Finally, the invention also provides an elastic element according to claims 35 ff which is particularly suitable for a drive device for furniture, in particular also for one of the claims directed thereon.

The invention will be described in more detail below with reference to the drawings by means of exemplary embodiments. It shows: Fig. 1a-d is a plan view of a first drive device without motor, in four successive operating states, as they occur when moving a sliding door;

Fig. 2a-e is a plan view of parts of a transmission for the drive device of FIG. 1 in five successive operating states, as in the

Closing a sliding door occur;

Fig. 3a-b show two explosive views of some transmission elements of a transmission for a drive device;

4a-i a furniture with a drive device with motor in various views and opening conditions, partially in detail view;

Fig. 5a-e is a plan view of another drive device in several successive operating states, as they occur when moving a sliding door;

Fig. 6a-e views of the arrangement of the drive device on a guide rail of a piece of furniture

Fig. 7 is a plan view of a third drive device;

8a-b is a plan view of parts of a transmission and a sensor device for the drive device of FIG. 7 in two operating states, as they occur when moving a sliding door, and Fig. 9a-d diagrams showing by way of example the relationship between the engine torque and the door speed and the opening path of the sliding door when opening and closing a sliding door with a drive device of the type of Figure 7 illustrate;

10a-d different operating states when moving a sliding door in a further embodiment;

Fig. 1 la-d different operating conditions when moving a sliding door according to the embodiment of Fig. 10;

FIGS. 12a-d show various other operating states of the exemplary embodiment of FIG.

10; 13a-d different further operating states of the embodiment of FIG.

10; 14 shows a view of a further embodiment in the extended state;

Fig. 15a-b is a view of an embodiment of Figure 14 in the extended state. FIG. 16 shows a view of an exemplary embodiment according to FIG. 14 in the retracted state; FIG.

17a-b is a view of an embodiment of Figure 16 in the retracted state.

Fig. 18 is an exploded view of drive components; 19a-b show two views of a further embodiment in the extended state;

Fig. 20a-b show two views of a rack assembly;

Fig. 21 a-b views for vibration damping; and

Fig. 22 is a sectional view with a damping element.

Figures I A to C show a drive device 1 for motor moving - in particular for opening and / or closing - movable furniture parts of furniture, in particular for opening and / or closing a sliding door 2 at least one or more of the sliding doors 2 having Furniture 3 is designed (see Fig. 4).

The drive device 1 has a mounting base 4, which may also be designed as a housing, in which case it is preferably closed by a cover part, not illustrated here, and which can be fastened to a furniture carcass 3b of the furniture 3, preferably on or in a base or cover plate 3a of the furniture body 3b.

The sliding door 2 runs in a manner not to be seen here in detail with rollers in a rail arrangement of the furniture. Preferably, each sliding door 2 is assigned in each case one of the drive devices. The Fig. 4a) to 4c) and 4d) to f) show different opening states each one of the sliding doors 2 in different views. On the furniture side immovably fixed mounting base 4 (eg of Fig. 1) at least one electric motor 6 (according to the type of Fig. 5 or 7) is set, for example, via a gear assembly, the sliding door 2 accelerate or decelerate.

The electric motor 6 is to pinion (not visible here) and optionally one or more optional - the output shaft upstream and / or downstream - gear elements coupled to a gear assembly 5.

The gear assembly 5 has a rotatable - in Fig. 5 similar to a crown wheel - first gear 7, on the axis 19 another rotatably connected to the first gear 7 further gear 8 is arranged, which may also be integrally formed with the first gear 7 and which can be brought into engagement via an external toothing with a toothing of a toothed rod 9, which is displaceably held on the mounting base 4 (see, for example, FIG. Id).

The rack 9 is designed, via a coupling device - which is designed as a fork-like driver element 10 - in which a corresponding drive member - such as a pin 31 - of engaging the sliding door 2 guided in a cam guide 30 driver 29 engages in the sliding direction X or Opening direction positively or negatively accelerating, ie possibly also braking, to act on the sliding door 2.

The basic function of this drive is as follows.

If the preferably designed as a DC motor electric motor 6 is energized for rotation in the corresponding direction of rotation, the gear assembly 5 rotates, which in turn shifts the rack 9, which pushes the sliding door 2. In this way, the sliding door 2 is pushed out of the closed position over part of the sliding path that can be realized maximally with the sliding door 2. At a

Current supply to the electric motor 6 for rotation in the opposite direction, however, a closing of the sliding door. 2 With the aid of the electric motor 6, a (too) fast manually initiated closing movement can be counteracted by braking (FIGS. 9c, d).

The drive devices of FIGS. 1 to 8 are preferably designed such that the rack 9 and the meshing with it second gear 8 after sweeping a predetermined opening path - preferably well before reaching the end-opening position of the sliding door 2 after a few cm way (eg in the position of Fig. 4c) - disengaged.

Figures 2a to e show the re-engaging the rack 9 with the second gear 8 when closing the sliding door 2. The direction of rotation Y shows the direction of rotation of the gear assembly 5 during the closing operation. As the rack 9 approaches, the second gear 8 is again brought into engagement with the rack 9 via the projection 13 and the web 12. Thus, the rack 9 and the second gear 8 are again brought together "exactly." Furthermore, the gear arrangement and thus also the motor 6 are pre-accelerated via the projection 13 and the web 12 in order to ensure a safe and "gentle" engagement of the rack 9 and to ensure the second gear 8.

Simultaneously or immediately before or after, the sliding door 2 and the cam 29 are also disengaged from the transmission pin 32 fixed to the sliding door 2, e.g. can be realized that the driver 29 is rotatably or pivotally guided in a cam guide 30, so that the attached to the sliding door 2 transmission pin 32 exits after reaching the maximum position of movement of the driver 29 in the cam guide 30 from the driver 29, whereas he when closing again enters the driver 29 and via the pin 31, the driver element 10 and the rack 9 entrains, which then again with the gear 8 engages (Figures 6a to e).

The rack 9 may, for example, have a T-shaped groove towards the mounting base 4, into which a sliding door parallel to the sliding direction X of the sliding door can be inserted. ckende, corresponding rail contour 1 1 engages the mounting base 4, so that the rack 9 is guided on the mounting base 4 slidably. Alternatively, for example, a groove in the mounting base and an engaging this Schienstück be formed on the rack 9.

The sliding door 2 can move beyond the maximum reachable with the rack 9 and the cam guide 30 opening position by their own kinetic energy after disengaging the drive device 1 further in the guide rail 33 in the maximum open position (Fig. 9a, b), wherein it is braked by friction or can be moved manually into this position. After disengaging the rack, the electric motor 6 is decelerated (FIG. 9a), which was preferably previously accelerated constantly during the opening movement; Fig. 9a, b). In this way, the sliding door 2 can be maximally accelerated in only a short path.

The construction described above involves the need to again engage the toothings of the rack 9 and the gear 8 when closing.

This is significantly simplified and facilitated according to the invention in that a synchronization and / or Vorbeschleunigungseinrichtung is arranged or formed on the gear parts gear 8 and rack 9, which serves to 1- 1 bring the mesh of rack 9 and gear 8 thereby optimize that the rack 9 already starts to set the gear 8 in rotation and to accelerate before the teeth of the gear 8 and the rack 9 engage with each other.

This can be achieved in a simple manner by providing on the toothed wheel 7 a protrusion projecting outwards beyond the outer circumference of the toothing, in particular web 12-for example, a web 12 extending radially beyond the circumference of the teeth, onto a protrusion 13 the rack at Closing the sliding door 2 initially runs, so that the gear 7 is set in rotation (Fig. Ia, 2a, b).

The web 12 may be formed as a rib on one of the axial sides of the gear 5.

A supportive synchronization between the teeth on the rack 9 and on the gear 8 is achieved when the web 12 is radially aligned with the tip of one of the teeth of the gear 8 (Fig. 1) or this is arranged slightly advanced in the direction of rotation (Fig. 2) and extends radially beyond this tip.

Thus, the teeth of the rack 9 and the gear 7 are easily engaged with each other when the rack moves further in the direction of the gear and this finally eiτeicht (Fig. Ib; 2c).

Then, for example, the motor can act brakingly on the sliding door (FIGS. 1c, 2d, e).

The Vorbeschleunigen and synchronizing the gears in particular also has an advantageous effect on the transmission life, since the transmission is accelerated by the invention only slowly to the high speed with which the sliding door moves when closing.

The electric motor 6 can also be used to pull the sliding door 2 into the maximum achievable closed position after engagement and after any initial braking required (FIGS. 1a, 8c, d).

In order to ensure that the gear is in a suitable rotational angular position when closing the door, in which the projection meets the radial web in a suitable manner, a rotation angle sensor can be arranged on the gear arrangement to determine its rotational position, and in order then to align the gear correctly with the electric motor 6 after disengaging, For ease of realization of the function of the correct alignment of the web 12 without an additional sensor, however, it is advantageous to design the gear arrangement 5 such that it always remains in the same, predefined rotational position when disengaging the gear 8 and the rack 9,

This can be achieved by forming rotational angle limiting means on the gear arrangement 5.

These rotation angle limiting means may include an end stop 17 - e.g. a radial rib 17 on the housing, in particular on the in Fig. 3 only partially shown mounting base 4 - - at which a corresponding end stop - in particular a corresponding radial rib 14 on the housing, in particular the mounting base facing gear assembly 5 then or shortly after strikes When the rack 9 with the gear is disengaged (Fig. 3 a, b) and is reached.

The web 12 and the rib 14 are preferably formed on the mutually remote axial surfaces of the Zahnradanordnυng 5.

In this way, a rotation angle of slightly less than 360 ° can be achieved.

In order to be able to cover a larger angle of rotation, according to a structurally simple and inexpensive variant of the invention, a freely rotatable disc 15 on the axis of the gear assembly 5 between the gear assembly 5 and the housing, in particular the mounting base 4 is arranged, which also at their opposite axial sides Stops, in particular ribs 17, 18, which are arranged and aligned so that they can each abut in one or the other direction against the corresponding stops / ribs 13, 14 of the gear arrangement 5 and the housing. In this way, the maximum paintable angle of rotation can be appropriately increased. Maximal is with this disc 15 an egg increase the angle of rotation by just about wemgei as 360 ° to eggzielen (because of dei not negligible Umfangsersii cornering of the ribs 15, 18) Duich 1 to n widened, analogously trained, fiei drehbaie discs (not shown here) with attacks or ribs, the achievable angle of rotation can be further increased.

Deiart can in a simple manner on a Sensieien and driving the appropriate position of the double teat (Tahmadanoidnung 5) after the except Emegπffgelangen the gear 8 and the rack 9 grazing omitted

In order to control the electric motor 6 suitable, it is also advantageous to be able to determine the absolute position of the rack 9 or dei coupled with this Schiebetih 2 can

This can be realized, for example, with the aid of a sensor device 20 for sensing the position of the rack 9 in sliding direction

This sensor is particularly advantageous leahsiert after emei Ausfuhi ungsfoim dei egg by the following means (see Fig. 7 and 8)

Thereafter, the Sensoremiichtung 20 on ai axis 21 laterally next to the Tahmadanoidnung 5 diehbai mounted Diehhebelelement 22, on whose one end 23 a spring-loaded thrust element 24 of a capacitive or inductive wnkenden linear position sensor 25 einwπkt and the other end 26 always at a relative zui Schiebeπchtung X. Angled edge 27 of the rack 9 hangs at an angle.

When the edge 27 against which the rotary lever element 22 abuts when closing the sliding door 2 by a movement of the rack, it moves the rotary lever element 22 against the spring force acting on the sliding element 24. When the toothed rack 9 (eg, further to the right in FIG. 8) is moved further, the pushing element 24 is moved correspondingly (eg, further to the left in FIG. 8). The pusher 24 is formed, for example, as a current-inducing element on an inductive sensor or the like, or as a capacitance-changing element on a plate capacitor.

In this way, the absolute position of the toothed rack 9 can easily be sensed via a certain path and there is a clear relationship between the position of the pushing element and the position of the toothed rack, which can be used to control the drive device.

Fig. 9 shows that the door with the illustrated drive device is initially accelerated almost linearly, preferably by constant energization of the electric motor 6, until the rack 9 and the gear 6 are disengaged.

Then, the electric motor 6 is braked and the sliding door 2 rolls out, preferably to its maximum achievable end position (Fig. 9a, b).

The closing of the sliding door 2 is initially done manually by a person. Then reach the rack 9 and the gear 8 again into engagement, which is determined by the sensor device (20). If necessary, the motor 6 (if the sliding door closes too fast) may possibly have a braking effect and / or - e.g. after an initial braking of the sliding door - support the closing. The braking effect can even be increased when the currentless and / or energized motor.

The braking effect of a currentless motor (actually then generator) consists only of mechanical friction. If the motor (generator) is short-circuited, an electrically generated braking torque is generated. If the motor is supplied with a current which generates a torque opposite to the load torque, a considerably higher braking torque can be generated (shown in FIG. 9).

Preferably, the engine 6 brakes the door first and then slowly pulls it into its Schiießstellung. For this purpose, a suitable control device 28 is connected to the sensor device. device 20 and the electric motor 6 to be integrated into the housing, which is shown schematically in Fig. 7.

The drive device shown is not only suitable for opening and closing sliding doors but also for sliding and closing of roller-bearing moving parts of furniture.

To operate the drive device for opening the sliding door 2, the sliding door 2 has to be moved by a small release path by the operator, preferably in the opening direction or alternatively in the closing direction. This movement is registered via the linear path sensor and feels to trigger the drive device.

Thus, the opening of the sliding door 2 is advantageously started by a slight pressure on the sliding door 2 in the opening direction. The pressure on the sliding door moves it a short distance (preferably about 1 mm), so that the control electronics can detect this movement and just interpreted as an opening command. Furthermore, it is provided that the controller is designed such that an external input signal of e.g. a radio switch, a manually operated button or other state of the art command devices can be processed.

In addition, the controller may preferably output an output signal by means of which e.g. a lighting in the cabinet can be turned on, but other useful facilities can be turned on. 10 a) to d), 1 1 a) to d), 12 a) to d) and 13 a) to d) show different views and operating states of a further embodiment of the invention.

Also shown in FIG. 10 is the drive device 1 for motor moving - in particular for opening and / or closing - movable furniture parts of furniture designed especially for opening and / or closing a sliding door 2 on at least one or more of the sliding doors 2 having furniture 3 (see Fig. 4). It also has in turn the mounting base 4, which can be fastened to the furniture body 5 of the furniture 3 (see in particular Fig. 4 and Fig. 18).

Again, the electric motor 6 is to e.g. Forward and / or downstream gear elements are rotatably coupled to a gear arrangement 5 via the output shaft.

The gear assembly 5 has a rotatable - in Fig. 5 end-toothed - first gear 7, on the shaft 19 another rotatably connected to the first gear 7 further gear 80 is arranged, which may also be integrally formed with the first gear 7 and the via an external toothing with a toothing of a displaceably guided on the mounting base 4 rack 90 is engageable.

The rack 90 is in turn designed to accelerate positively or negatively via a coupling device in the sliding or opening direction X, i. possibly also braking, to act on the sliding door 2.

Again, the gear arrangement, the two after a predetermined sliding path of the furniture part, in particular the sliding door, out of engagement and in a subsequent closing of the furniture part, in particular the sliding door, again engaging each other, gear elements 80, 90, which are at the rack 90 and the gear 80 is.

Unlike in Fig. 9 but on the sliding rack 90, a turn relative to the rack 90 and the mounting base 4 relatively movable rack segment 91 is slidably guided, which also after disengaging the rack 90 and the gear 81 with the gear 80 into engagement remains.

The rack segment 91 here has, by way of example, six teeth 92, which are formed on a base 93, which is displaceably guided on the rack. This can for example be realized in that the base 93 with a T-piece approach (see Fig. 18) in a rail-like recess 94 of the rack 90 a engages, wherein the slide-like recess 94 is aligned parallel to the sliding direction X and wherein is dimensioned such that the rack segment can move laterally in sliding direction X with a portion of its teeth 92 beyond the last tooth of the rack when closing the sliding door, but on the other hand some of the teeth of the rack segment 91 and the rack 90 remain in coincidence with each other.

The function of this arrangement is as follows.

If the movable furniture part (in particular a sliding door) is closed by hand (in the direction -X), the rack 90 (with the toothed segment 91) moves to the right. In this case, first the toothed rack segment 91 engaged with the toothed wheel 80 shifts relative to the toothed rack 90 in the direction X (FIGS. 10a, b and 11a, b) until the toothed wheel 81 runs onto the first tooth of the toothed rack 90 (Figures 10b and 1b). Now the rack segment moves together with the rack 90 (Figures 10c, 10d and 1c, 1d).

Since there are always teeth of the rack segment 91 and the rack 90 in coincidence, it is ensured that the rack 90 and the gear 80 securely engage again.

By the rack segment 91, a synchronization device is provided which is adapted to bring the decoupled gear elements gear 80 and rack 90 synchronizing again with each other.

In addition, the movable rack segment 91 can be combined with a pre-acceleration device in the form of a web projecting radially over the outer circumference of the gear wheel 8, as e.g. 2 is provided according to FIG.

After Fig. 12a to d u. Figures 13a-d illustrate how the assembly behaves when attempting to retract the sliding door with the electric motor. In this case, the movable rack segment 91 will only move one tooth further in the closed position. Direction (door-to-Richtυng) moved or pulled (Fig. 12a, 12b and 13a, 13b) until it reaches the rack 90 to a stop. Now, the rack segment 91 and the rack 90 move together again and will move from the driven gear 90 to the closed position (Figs. 12a to 12d and 13a to 13d).

Referring to Figs. 14 through 17, alternative rotational angle limiting means are disclosed.

Thereafter, a control cam is formed or arranged on the mounting base 4 or on the housing).

This can be realized simply by fixing a plate 34 on the mounting base or on the housing, which plate is provided with a control cam 35.

Preferably, the control cam 35 is formed as a spiral curve-like, slot-shaped path in the plate 34, in which a pin 36 engages, which is formed on a rotatable relative to the gear 70 Laufwegbegrenzungsteil 37. In order for the pin to move in the path, a slot 38, in particular in the form of a blade, can be formed on the toothed wheel 70. Another slot 40 is formed in the Laufwegbegrenzungsteil 37. The Laufwegbegrenzungsteil is rotatably mounted on the gear 70, so that the slot 40 is displaceable about the axis 19. The Laufwegbegrenzungsteil 37 is pivotally mounted about the axis 41, the bearing is arranged on the gear 70.

Preferably, the rotation is limited to about 2.2 turns with the spiral path.

These rotation angle limiting means are structurally simple and yet work very precisely. FIGS. 14 and 16 each show the maximum rotational positions. 14 and FIGS. 15a and 15b show the maximum extended state of the toothed rack 90. FIG. 16 and FIGS. 17a and 17b show the maximally lowered state of the toothed rack 90. The state of the rack 90. The stop 39 in Fig. 15a and 15b limits the Ü over the control cam 35 defined permissible rotational movement in the extension direction.

FIG. 18 shows a further possible embodiment of a drive device and its components. A lower housing part 102 and an upper housing part 103 enclose the drive device.

In an inner housing lower part 100, the control cam 35 is formed. An inner housing upper part 101 encloses the components travel path limiting part 37, gear wheel 80, rotary lever element 22, rack 90, rack segment 91 as well as the electric motor 6.

The inner housing 104, formed from the inner housing lower part 100 and the inner housing upper part 101, is floatingly mounted in the outer housing 105, formed by the lower housing part 102 and the upper housing part 103.

It is advantageous that or if such a first housing part or a first housing - here the outer housing 105 with the lower housing part 102 and the upper housing part 103 - and another housing part - here the inner housing 104 with the actual mechanical drive components, formed from the inner housing lower part 100 and the inner housing upper part 101, are created, which are decoupled from each vibration technology.

Preferably, the inner housing 104 receives one or more, in particular all, gear and drive parts, such as the gears, the motor and / or the displacement sensor.

The outer housing 105, however, receives the inner housing 104 and preferably an electronic circuit board. A particular advantage of the two housings 104, 105 is that this protects the electronics from the (lubricated) transmission and that transmission noise is less likely to escape through the double shell. In order to optimize the noise reduction, it is necessary to prevent the structure-borne noise of the inner case 104 from continuing directly into the outer case 105. From the outer housing 105, the sound could otherwise be transmitted to the rail of the guide assembly and on the furniture body. In particular, the furniture body acts as an "amplifier" and it would be a nuisance for the user without measures to reduce noise.Especially from a drive which is preferably used in bedrooms, almost no noise emissions may emanate effectively prevented by the drive device.

This can in particular be achieved in a simple manner by arranging between the first housing and the second housing - here between the inner housing 104 and the outer housing 105 - at least one or more elastic elements 106 and / or spring element (s).

Preferably, the at least one elastic element 106 is made of a material having a relatively high internal damping. For example, it is a thermoplastic elastomer (TPE). This material contributes to a good soundproof design.

Another decisive influence on the sound insulation is also the shape of the at least one elastic element 106.

It is advantageous if no continuous planar contact is created between the elastic element and the inner housing 104 or the outer housing 105, but if the elastic element rests only linearly against the inner housing 104 and / or the outer housing 105 in certain areas. Preferably, the shape of the elastic element 106 is chosen so that the components to be decoupled are not connected directly, but the material under a Angle α meets the two parts to be decoupled, which is preferably between 10 ° and 80 °.

The angle α allows the elastic member or element 106 much easier to avoid the vibrations to be damped, as it would do a direct connection.

A direct connection would stress the material only on pressure, the "oblique" connection loads the material (also) on bending.

The elastic elements 106 are preferably slipped over these corner regions, like an outer shell corner piece, on a housing 104 which has corner regions.

Referring to FIG. 22, the inner housing 104 is relatively flat so that an elastic member 106 is used to be slipped over two adjacent corner portions of the inner housing 104, respectively. It then has such a shape that it encloses the two corners and the edge of the inner housing 104 which connects them.

In this case, the elastic element 106 is preferably formed wave-shaped, so that both the inner housing 104 and the outer housing 105 investment areas in the mentioned angle (acute angle) are formed.

This is particularly evident from FIG. 21 and the associated detail enlargement from FIG. 22. In the present case, five of the elastic elements 106 are placed on the inner housing via corner regions. Such a highly effective decoupling of these two housings 104, 105 is achieved, resulting in a minimal noise.

FIGS. 19 and 20 show views of a drive device which has also been optimized once again with regard to the gear design. A particularly advantageous transmission element of the already described figures or embodiments of the invention is in each case the "rack 9" which is coupled to the gear arrangement 5 on the one hand and with the sliding door 2 on the other hand and which serves to convert the rotational movements of the gear arrangement 5 into linear movements ,

According to Fig. 1 1, this rack 9 is divided into two parts or segments: a sliding rack 90 and a relative to the rack 90 and relative to the mounting base (housing) movable rack segment 91st This type of configuration and its functionality is used with all its advantages also in the embodiment of FIGS. 19 and 20.

In addition, according to FIG. 19, the toothed rack 90 or its segment 90 is again formed in two parts.

According to the embodiments of Figures 1 to 18, the rack 9 or rack segment 90 is connected to both the transmission - e.g. the gear assembly 5 - coupled as well as directly connected to the sliding door 2. In addition, on the rack 9, a scanning curve - the edge formed at an angle to the sliding direction 27 - mounted, which is used by the displacement sensor to determine the position of the rack 9. Since a guide, especially a low-cost plastic guide, always has play, the movement on the door causes a movement of the Abtastkurve also in the scanning direction. This can lead to measurement errors that could jeopardize the function of the controller.

To solve this problem, the rack 9 or its movable segment 90 is divided again or divided into two rack parts.

The first rack part 90a (see FIG. 20) includes the toothing and the scanning cam / edge 27, whereas the second rack part 90b is coupled to the door via the driver 10. Both rack parts 90a, 90b are guided on the housing - preferably in the inner housing 104 - for themselves. They move in the axial direction or in the direction of the toothing together, but are limited perpendicular to this direction movable relative to each other.

A particular advantage of this embodiment is that the toothed rack part 90a with the toothing has a resilient element 107, which on the rack member, which is coupled to the door, biases what the rack always on a defined side of the guide 1 10 of the inner housing 104th holds. Even when caused by game movements of the door part, these do not affect the tooth part, since it always rests with slight pressure on the side of the guide 1 10

According to the embodiment of FIG. 19, the first toothed rack part 90a has a recess 108 into which a corresponding section 109 of the second toothed rack part 90b engages. In this case, a wall of the recess 108 a Blattfederähn- Hch shaped (resilient member 107) and presses against the portion 109th

reference numeral

1 Antπebsvorπchtun

2 sliding door

3 furniture

3a cover plate

3b furniture carcass

4 mounting base

5 gear arrangement

6 electric motor

7 First gear

8 second gear

9 rack

10 driver element

1 1 rail contour

12 footbridge

13 lead

14 rib

15 disc

16 rib

17 rib

18 rib

19 axis

20 S ensoreinrichtung

21 axis

22 rotary lever element

23 end

24 push element

25 linear displacement sensor

26 end

27 edge 28 control device

29 drivers

30 curve guide

31 cones

32 transmission bolts

33 guide rail

X sliding direction Y direction of rotation

34 plate

35 control curve

36 pen

37 Laufwegbegrenzungsteil

38 slot

39 stop

40 slot

41 axis

70 gear

80 gear

90 rack

90a, 90b rack parts

91 rack segment

92 teeth

93 base

94 recess

100 indoor houses 1

101 interior housing shell

102 housing base

103 Housing top

104 inner housing

105 outer casing

106 elastic element

107 resilient element

108 recess

109 section

1 10 leadership

α angle

Claims

claims

1. Drive device (1) for moving the motor - in particular for opening and / or closing - movable furniture parts of furniture, in particular for

Opening and / or closing a sliding door (2) on a piece of furniture (3) having at least one or more of the sliding doors (2) and comprising: a. an attachable to the furniture mounting base (4) to which at least one electric motor (6) is fixed, which via a gear arrangement on the

Sliding door (2), b. wherein the gear arrangement two after a predetermined sliding path of the furniture part, in particular the sliding door, out of engagement and in a subsequent closing of the furniture part, in particular the sliding door, again engaging each other, having transmission elements (8, 9), and / or c. wherein the gear arrangement has a gear element that is designed, after a predetermined sliding path of the furniture part, in particular the sliding door (2), with the furniture part, in particular the sliding door, disengaged and at a subsequent closing of the

Furniture part, in particular the sliding door, again with this / this engage.

2. Drive device according to claim 1, characterized in that it comprises a synchronization and / or Vorbeschleunigungseinrichtung which is adapted to bring the decoupled transmission elements in a closing operation synchronizing and / or pre-accelerating with each other.

3. Drive device according to claim 1 or 2, characterized in that the engageable and disengageable transmission elements as a rotatable gear (8) and a meshing, linearly displaceable rack (9) are formed.

4. Drive device according to claim 1, 2 or 3, characterized in that the engageable and disengageable gear and furniture parts, the rack

(9) and the sliding door (2) are.

5. Drive device according to claim 1, 2 or 3, characterized in that the engageable and disengageable transmission parts, the rack (9) and the second gear (8).

6. Drive device according to claim 1, 2 or 3, characterized in that in and disengageable gear and furniture parts of the driver (29) and on the sliding door (2) fixed transmission pin (32).

7. Drive device according to claim 3, 4 or 5, characterized in that the synchronization and / or Vorbeschleunigungseinrichtung is adapted to vorzubeschleunigen the second gear (8) during a closing operation before engaging the teeth of these elements.

8. Drive device according to claim 7, characterized in that the synchronization and / or Vorbeschleunigungsvorrichtung one over the outer circumference of the second gear (8) radially projecting web (12).

9. Drive device according to claim 8, characterized in that the web

(12) cooperates with a projection (13) on the rack (9).

10. Drive device according to claim 7 or 8, characterized in that the

Gear (8) is a gear element of a gear arrangement (5) which has a rotatable first gear (7), on the axis (19) further, the further, non-rotatably connected to the first gear (7) or formed further gear (8 ), which in turn via its external toothing with the on the mounting base (4) slidably guided rack (9) can be brought into engagement.

1 1. Drive device according to claim 10, characterized in that the rack (9) via a coupling device with the sliding door (2) can be coupled.

12. Drive device according to one of the preceding claims, characterized in that the gear arrangement (5) is designed such that it remains in the same, predefϊnierten rotational position when engaging bring out of the gear (8) and the rack (9) ,

13. Drive device according to one of the preceding claims, characterized in that on the gear arrangement (5) rotational angle limiting means are formed.

14. Drive device according to one of the preceding claims, characterized in that the rotation angle limiting means have a stop (17) on the mounting base (4) and a stop (14) on the gear arrangement (5) have.

15. Drive device according to one of the preceding claims, characterized in that the rotation angle limiting means further comprises one or more freely on the axis of the gear arrangement (5) rotatable disc (s) (15) up / have on their opposite axial sides

Have stops (14, 17) / which are designed to cooperate with the stops (16, 18) on the mounting base (4) and on the gear arrangement (5).

16. Drive device according to one of the preceding claims, characterized in that the stops as radial ribs (14, 16, 17, 18) are formed.

17. Drive device according to one of the preceding claims, characterized in that a rotation angle sensor is arranged on the gear arrangement (5).

18. Drive device according to the preamble of claim 1 or according to one of the preceding one of the preceding claims, characterized by a sensor device (20) for determining the position of the rack (9) and / or the sliding door.

19. Drive device according to one of the preceding claims, characterized in that the sensor device (20) has a rotatably mounted rotary lever element (22) on one end (23) a spring-loaded thrust element (24) of a capacitive or inductive acting linear position sensor 25 acts and its other end (26) at least temporarily when opening or

Close at a relative to the sliding direction (X) angularly aligned edge (27) of the rack (9).

20. Drive device according to one of the preceding claims, characterized in that the rack (9) is designed in several parts.

21. Drive device according to one of the preceding claims, characterized in that on the rack (90) a rack segment (91) is displaceably guided, which also after a disengage the rack (90) and the gear (80) with the gear ( 80) remains engaged.

22. Drive device according to one of the preceding claims, characterized in that on the mounting base (4) or on the housing, a control cam (35) is formed or arranged, in which a pin (36) engages, at a relative to the gear (70) rotatable Laufwegbegrenzungsteil (37) is formed.

23. Drive device according to one of the preceding claims, characterized in that the control cam (35) is spiral-shaped.

24. Drive device according to one of the preceding claims, characterized in that the Laufwegbegrenzungsteil (37) has a slot (40), in particular in arcuate form, which is displaceable about the axis (19).

25. Drive device, in particular according to one of the preceding claims, characterized in that it comprises a first housing (104) and a second housing (105) and that between the first housing and the second housing at least one elastic element (106) or more elastic Elements is / are arranged, wherein the first housing is preferably an inner housing and the second housing is an outer housing receiving the inner housing.

26. Drive device according to claim 25, characterized in that the elastic element (106) is designed such that it impinges in any case in an area at an acute angle to the walls of the inner housing (105) and / or the outer housing (104).

27. Drive device according to claim 25 or 26, characterized in that the elastic element (106) is corrugated.

28. Drive device according to one of the preceding claims, characterized in that the rack (90) by a resilient element (107) is resiliently pressed against a guide (1 10) on the housing.

29. Drive device according to claim 28, characterized in that the rack (90) has two or more rack parts (90a and 90b) which are resiliently biased to each other.

30. A method for driving a drive device according to one of the preceding claims, characterized in that the sliding door (2) is moved with the arrival device until two gear elements of the gear arrangement are disengaged and that the electric motor (6) is then braked ,

31. The method of claim 30 for driving a drive device according to any one of the preceding claims, characterized in that the sliding door (2) is first accelerated by preferably constant energization of the electric motor (6) until the two transmission elements of the gear assembly is disengaged.

32. The method of claim 30 or 31 for driving a drive device according to one of the preceding claims, in particular method according to the preceding claim, characterized in that the speed and / or the position of the sliding door, in particular the rack (9) with the sensor device ( 20) are determined.

33. The method according to any one of claims 30 to 32, characterized in that a braking torque is exerted on the sliding door (2) when closing.

34. The method according to any one of claims 30 to 33 for driving a drive device according to one of the preceding claims, in particular method according to the preceding claim, characterized in that when closing a variable braking torque on the sliding door (2) is exercised and / or the movable furniture part - possibly after an initial deceleration - is moved by the drive device in an end closed position.

35. Elastic element, in particular for a drive device, characterized in that the elastic element (106) is designed such that it in any case in an area at an acute angle to the walls of the inner housing (105) and / or the outer housing (104) impinges

36. Elastic element according to claim 35, characterized in that the elastic element rests substantially linearly on the housing walls.

37. Elastic element according to claim 35, characterized in that the elastic element on the housing walls is substantially point-like.

38. Elastic element according to claims 35 and 36, characterized in that the elastic element has a wavy contour in section.

39. Elastic element according to claims 35 to 38, characterized in that the elastic element is made of an elastomer.

40. Elastic element according to claims 35 to 39, characterized in that the elastic element made of a thermoplastic elastomer (TPE) is made.