EP2983555B1 - Drive device for a movable furniture part - Google Patents

Description

The invention relates to a drive device for a movable furniture part having an ejection element, an ejection force accumulator and a locking device for the ejection element, wherein the locking device has a locking pin which can be locked in a latching region of a guide track in a locking position and acted on by the ejection force accumulator. In addition, the invention relates to a piece of furniture with a furniture body, a movable relative to the furniture body furniture part and such a drive device for the movable furniture part.

In furniture fittings, there are already for many years drive devices for ejecting a movable furniture part from a closed position to an open position. In order to guarantee a secure holding of the ejection element or the movable furniture part in a closed position, locking devices are provided. If the opening of the movable furniture part is desired, then this locking device can be unlocked by pressing a trigger mechanism. Unlocking can be done for example by pressing on the movable furniture part in an overpress position. Also by pulling a triggering or unlocking is possible. After this release, an ejection force storage can release its power and thereby move over the ejection element, the movable furniture part in the opening direction.

After the ejection force accumulator has discharged during the opening of the movable furniture part, this ejection force must again reach by clamping in the ejection energy storage. This is usually done when closing a movable furniture part (but can also be done when opening) by an operator who moves the movable furniture part by hand. Thus, when pressed on closing the movable furniture part is pressed against the force of the ejection force memory. As soon as the ejection force accumulator is fully tensioned, the locking pin of the locking device passes along the guideway into the latching area, in which case the hand no longer holds the ejection force accumulator in its cocked position, but the locking pin locks the tensioned ejection energy storage at the locking area in the locking position or holds.

One way to unlock by pulling is from the non-generic DE 10 2011 002 212 A1 , According to this document, a spring element is arranged with a leg in the detent recess or the spring element forms with the detent recess. This spring element is in a relayed by the locking pin and acting in the opening direction force, so that the locking pin is no longer locked in the detent recess but the spring element presses and passes through a vacant gap in the detent recess. With only a relatively small force acting on the spring element, the spring element can also achieve a certain damping effect when striking. The disadvantage of this variant, however, that especially at strong closing force or high closing speed a possibly existing damping effect is of no use. Rather, with strong closing force or high closing speed no secure locking of the locking pin can be ensured in the locking recess, but there is an immediate - unwanted - Zugentriegelung. The same applies to the US 2007/0090735 A1 ,

A likewise generic device goes out of the CA 2 743 055 out, with the locking recess itself compliant - not stationary - is. A drive through is not possible, but by the flexibility is a "pushing away" the detent well possible.

Therefore, the present invention further relates to a drive device in which the latching portion has a relative to the guide track stationary - in other words the locking pin impenetrable - locking recess. That is, the detent recess is not passable by the locking pin, since the detent recess forms a fixed or substantially fixed part of the locking device. Thus, no unwanted opening by pulling at high closing force or high closing speed can occur.

On the other hand is from the generic WO 2007/112463 A2 Such a stationary detent well known (more writings with fixed locking recesses are US 4,828,344 and the EP 0 483 590 A1 ). In addition, this document shows the task that a Locking element of a drive device is transferred without unnecessary material wear and oversized noise in a trained in a guideway detent position. For this purpose, a drawer is braked by means of a damping device before a force storage device acting upon the drive device is charged. That is, the closing movement is just as strong braked before loading the energy storage that the residual energy is still sufficient to load the energy storage, whereby the locking element is not at full movement of the movable furniture part - that is muted - locked.

However, a critical area during clamping and locking is not solved in this document, namely the area immediately before reaching the locking position in the latching area. Namely, if the locking pin passes due to the formation of the guideway in an area shortly before reaching the locking area, so the fully charged ejection energy storage can act with its full force on this locking pin, which then strikes under relatively strong noise and large wear in the locking area.

The object of the present invention is therefore to provide a comparison with the prior art improved drive device. In particular, the lock should be as quiet as possible. Also, the lock should be possible under the least possible stress of the components involved.

This is achieved by a drive device with the features of claim 1. Accordingly, it is provided that in the latching area on the wall of the guideway a damping device is mounted in the form of a padding, whereby the acted upon by the expelled ejection force memory locking pin braked and / or attenuated in the latching area can be stored. Thus, the movement of the locking pin is attenuated or slowed down when reaching the latching area.

In principle, such damping or braking can be provided with any type of locking device with a locking pin and a guideway. However, such braking or damping of the locking pin is particularly necessary in a heart-shaped guideway. At a Such a heart-curved guideway is provided that the heart-shaped guideway has a clamping portion in which the locking pin is movable during clamping of the ejection force memory, and a Einrückstbewegungbereich of the locking pin before reaching the locking position in the locking region, wherein the locking portion in the opening direction of the movable furniture part of a between the clamping portion and the latching movement range lying transition region, preferably by 0.2 mm to 3 mm, is spaced. Since the locking pin is from the movement of the movable furniture part, preferably completely, decoupled from reaching the transition region and since the locking pin is thus moved by the ejection force memory along the Einrastbewegungsbereichs in the latching area, is precisely this distance between the transition region and the latching area in the previous heart-shaped curve Guideways the reason that due to the high force acting on the locking pin from the ejection force accumulator, relatively strong stop or locking noises occur. The greater the force of the ejection force accumulator, the louder and more distracting the locking noises. The deceleration or damping of the locking pin this is now prevented.

In principle, several variants are conceivable, such as the locking pin can be braked or damped stored in the locking area.

A first variant not according to the invention provides that a damping device acting between ejection force accumulator and locking pin is provided, which dampens the kinetic energy transmitted by the ejection force accumulator into the locking pin before reaching the locking position. Thus, the full energy is not transferred from reaching the transition region on the locking pin. In other words, the kinetic energy acting on the locking pin is reduced by the damping device. It is particularly preferred for this purpose that the kinetic energy acting on the locking pin is reduced by the damping device only in the latching movement range of the locking pin. Also, this damping device does not have to dampen the movement of the locking pin in the whole Einrastbewegungsbereich but can dampen this only in a subsection of the Einrastbewegungsbereichs. A particularly preferred embodiment of such a damping device is that the damping device is designed in the form of a travel transmission mechanism. Thus, not all of the energy from the ejection force accumulator is immediately transferred to the locking pin. This can be done, for example, that the locking pin is camshaft controlled by the Wegübersetzungsmechanismus in the latching area, the Wegübersetzungsmechanismus has a cam through which the ejection energy storage acting on the locking pin kinetic energy along the Einrastbewegungsbereichs in dependence on the control curve, preferably steadily increases. Another variant of this slow output of the energy of the ejection force accumulator on the locking pin is that, for example, in the region of the ejection force accumulator or at the head of a damper, for example in the form of a linear damper, is arranged. Thus, the first part of the decompression path of the ejection force accumulator takes place from the full voltage up to an almost full voltage, which is reached in the closed position.

A second variant not according to the invention, in order to brake the locking pin and / or damped in the latching area, is not to delay or control the transfer of kinetic energy to the locking pin, but the movement of the locking pin itself - on which already the full force of the ejection force memory acts - to dampen or brake. For this purpose, a variant provides that the damping device comprises a movable damping element, preferably a rotary damper, wherein the damping element comprises a damped rotatably mounted gear, wherein at least one tooth of the gear in the Einrastbewegungsbereich contactable by the locking pin and damped in the direction of latching range. Thus, practically the tooth of the gear forms a kind of brake in the latching movement range, so that the locking pin can not move unhindered into the latching area. Since the locking pin is preferably arranged on a pivotable locking lever, the locking pin damping can also take place in that a rotational damper or a friction brake is provided in the region of the axis of rotation of the locking lever.

According to a third variant according to the invention, in order to be able to deposit the locking pin in a braked or damped manner in the latching area, it is provided that the latching area has a damping device. Thus, there is no braking or damping of the movement of the locking pin in Einrastbewegungsbereich but it is envisaged that the damping device is designed in the form of an elastic surface of the locking portion as a padding. This results in a noise reduction when hitting or striking the locking pin in the latching area.

Basically, a base plate and a slide forming the ejection element is preferably provided for a structurally simple embodiment, wherein the carriage is movable relative to the base plate and lockable via the locking device on the base plate. In this case, the ejection force accumulator, which is preferably constructed as a tension spring, is attached on the one hand to the base plate and on the other hand to the slide. In order to enable the movement of the locking pin in the guide track, it is preferably provided that the locking pin rotatably mounted on the carriage via a locking lever and engages in the guide track formed in the base plate. As mentioned, the movement of the locking lever can be damped via a damping device.

In principle, it can further be provided that the ejection force accumulator can be loaded by opening and / or closing the movable furniture part. It is also possible that the entire drive device can be unlocked or released by overpressing the movable furniture part in an overpressure position lying behind the closed position in the closing direction and / or by pulling on the movable furniture part.

Protection is also desired for furniture with a furniture body. It can be provided that the essential components of the drive device are arranged on the furniture body and eject the movable furniture part via a on the movable furniture part or on an attached to the drawer rail driver. According to a preferred embodiment of the present invention, however, it is provided that the base plate of the drive device is arranged on the movable furniture and a catch which can be brought into engagement with the ejection element is arranged on the furniture body. Thus, the movable furniture part via the drive device almost bumps itself on the furniture body.

Fig. 1

ein Möbel mit bewegbaren Möbelteilen in verschiedenen Stellungen,

Fig. 2

eine 3D-Ansicht eines bewegbaren Möbelteils,

Fig. 3

das bewegbare Möbelteil von unten mit einer Antriebsvorrichtung,

Fig. 4

eine Explosionsdarstellung der Antriebsvorrichtung,

Fig. 5 bis 18

die Antriebsvorrichtung in verschiedenen Stellungen,

Fig. 19

eine Explosionsdarstellung eines zweiten nicht erfindungsgemäßen Beispiels der Antriebsvorrichtung,

Fig. 20

Details der zweiten Antriebsvorrichtung,

Fig. 20a - 20g

ein nicht erfindungsgemäßes Beispiel der Dämpfvorrichtung hergestellt im Zwei-Komponenten-Spritzguss,

Fig. 20h - 20k

ein nicht erfindungsgemäßes Beispiel der Dämpfvorrichtung hergestellt im Mehr-Komponenten-Spritzguss,

Fig. 21 bis 26

verschiedene Stellungen der zweiten Antriebsvorrichtung,

Fig. 27 bis 28

ein weiteres nicht erfindungsgemäßes Beispiel einer Dämpfvorrichtung,

Fig. 29 bis 30

eine erfindungsgemäße Dämpfvorrichtung in Form eines gepolsterten Anschlags,

Fig. 31

schematisch das Grundprinzip der vorliegenden Erfindung,

Fig. 32

ein Diagramm der Federkraft des Ausstoßkraftspeichers passend zur ersten Ausführungsvariante und

Fig. 33 bis 40

weitere Beispiele für ein Auslösen durch Ziehen.

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

Fig. 1

a piece of furniture with movable furniture parts in different positions,

Fig. 2

a 3D view of a movable furniture part,

Fig. 3

the movable furniture part from below with a drive device,

Fig. 4

an exploded view of the drive device,

Fig. 5 to 18

the drive device in different positions,

Fig. 19

an exploded view of a second non-inventive example of the drive device,

Fig. 20

Details of the second drive device,

Fig. 20a - 20g

a non-inventive example of the damping device made in two-component injection molding,

Fig. 20h - 20k

a non-inventive example of the damping device produced in multi-component injection molding,

FIGS. 21 to 26

different positions of the second drive device,

FIGS. 27 to 28

a further non-inventive example of a damping device,

Fig. 29 to 30

a damping device according to the invention in the form of a padded stop,

Fig. 31

schematically the basic principle of the present invention,

Fig. 32

a diagram of the spring force of the ejection force memory according to the first embodiment and

FIGS. 33 to 40

other examples of triggering by pulling.

In Fig. 1 is a piece of furniture 17 with a plurality of furniture body 18 movably mounted movable furniture parts 2 shown in the form of drawers. The individual movable furniture parts 2 are each attached to the furniture body 18 via a pull-out guide 24, wherein the pull-out guide 24 comprises at least one carcass rail 22 and a drawer rail 23. Optionally, even a middle rail may be present. The movable furniture part 2 itself has at least one Drawer container 20 and a front panel 21. The movable furniture part 2 shown at the top is in an open position OS and it can be seen schematically that the drive device 1 is attached to the drawer container 20 or to the drawer rail 23. As essential components, this drive device has a leash base plate 14 and a discharge element 3 movable relative to the base plate 14. This ejection element 3 is designed as a movable carriage 15 and is acted upon by the ejection force memory 4. The ejection element 3 is connected via a driver 19 in engagement with the carcass rail 22 and with the furniture body 18. When ejecting the drive device 1 abuts the ejector 3 and the ejection force memory 4 designed as a compression spring on the driver 19 and moves the movable Furniture part 2 in the opening direction OR. This ejection element 3 can be locked via a Verrieglungsvorrichtung 5 on the base plate 14. For this purpose, the locking device 5 has a pivotally mounted on the carriage 15 locking lever 16, attached to the front end of the locking lever 16 locking pin 7 and formed in the base plate 14 guideway 6 together with latching area R. When the movable furniture part 2 is moved from the position according to the top drawer to the position shown below, the carriage 15 is moved to the right relative to the base plate 14 in this movement in the closing direction SR, wherein the ejection force memory 4 is stretched. As soon as the locking pin 7 enters the latching region R of the guide track 6, the locking position V of the locking device 5 is reached. This may already be the case with the furniture part 2 still open, especially if the movable furniture part 2 is moved from the second position shown to the third position by a pulling device 25, which is only schematically indicated, into the closed position SS. According to the lowest representation of Fig. 1 is the release position or overpressure ÜS shown, is pressed in the closing direction SR on the movable furniture part 2, thus unlocking the locking device 5. But it can also be done unlocking by pulling.

In Fig. 2 the movable furniture part 2 is shown in a 3D view, wherein it can be seen that the movable furniture part 2 consists of a drawer container 20 and the front panel 21. Furthermore, it can be seen that the movable furniture part 2 is connected to a pull-out guide 24.

In Fig. 3 the movable furniture part 2 is shown from below, wherein on the drawer bottom 27, the drive device 1 is mounted together with the base plate 14. On the carcass rail 22, the drive plate 26 is fixed, on which the driver 19 is mounted.

Fig. 4 shows an exploded view of the drive device 1, wherein the two main components of the base plate 14 and the discharge element 3 forming slide 15 are. The linear movement of these two components 14 and 15 to each other is limited at least by the mounted on the base plate 14 Schlittenbahnbegrenzer 37 and formed in the carriage 15 slide track 36. Another important component is the ejection force accumulator 4, which is held on the spring base 31 formed on the base plate 14 and on the spring base 32 formed on the carriage 15. This ejection energy storage 4 is designed as a tension spring. As a locking device 5, the locking lever 16 together with the locking pin 7 and the cardioid guideway 6 is provided. The locking lever 16 is rotatably or pivotably mounted on the pivot bearing 28 in the carriage 15. The locking pin 7 engages in the assembled state in the guideway 6 a. Furthermore, a transmission element 42 is provided, which is mounted on the guide boundary 52 at a limited formed on the underside of the carriage 15 and not shown path movable. At this transmission element 42, the coupling element 33 is pivotally mounted on the pivot bearing 73. This coupling element 33 has the catching area 34 for the driver 19, not shown here. The pivoting movement of the coupling element 33 is controlled via the guide element 74, since this guide element 74 is guided in the coupling element guide track 35 formed in the carriage 15. Furthermore, a connecting element 41 is provided, which is rotatably mounted in the pivot bearing 44. At this connecting element 41, a clamping stop 55 is provided. As a further component, the control element 29 is provided which is displaceable or movable via the guide elements 57 in the control guide track 30 formed in the base plate 14. On the control element 29 and the clamping element 56 is mounted, which bears against the clamping stop 55 of the connecting element 41 during clamping of the ejection force memory 4. The control element 29 also has the control cam 9 on which the stop 43 of the Transmission element 42 depending on the position. These two components 43 and 9 together form a kind of path-translation mechanism and thereby the damping device 8 to move the locking pin 7 attenuated in the latching region R (more details will be described in the following figures). Furthermore, on the base plate 14 via the pivot bearing 49, the first Zugauslösungselement 46 rotatably mounted. This first Zugauslösungselement 46 has the two limiting elements 61, between which in the closed position SS, the stop 43 of the transmission element 42 is positioned. In addition, a second Zugauslösungselement 47 is provided, on which the latching region R co-forming locking stop 45 is formed. This locking stop 45 thus forms part of the guideway 6 and is movable relative to the base plate 14. The displacement of this second pull release element 47 is limited by the guide stop 75 and the side surface 76 of the base plate 14. In addition, this second Zugauslösungselement 46 via the compression spring 48 is subjected to force, said compression spring 48 is held or fixed on the one hand to the spring base 50 and on the other hand on the formed on the second Zugauslösungselement 47 spring base 51. Finally, the drive device 1 also has a retraction device 25, which has as essential components the Einziehkraftspeicher 40, Einziehkoppelelement 39 and the cover 38, wherein the cover 38 is held on the retaining bracket 77 formed in the base plate 14 recesses 78. The Einziehkraftspeicher 40 is designed as a tension spring.

According to Fig. 5 is the entire movable furniture part 2 in an open position OS, wherein the movable furniture part 2 is still in the freewheel. That is, there is still no contact with the schematically illustrated driver 19. The ejection force memory 4 is still relaxed, but pulls the carriage 15 so far until the end of the carriage track 36 abuts Schlittenbahnbegrenzer 37. The locking pin 7 is guided in a clamping section S of the guide track 6. The clamping element 56 of the control element 29 is not yet applied to the clamping stop 55 of the connecting element 41, however, the stop 43 of the transmission element 42 is already on the control element 29 and there at the beginning of the control cam 9. The connecting element 41 is connected to the pivot bearing 44 on account of a compression spring which is spanned between the spring base 53 and the spring base 54 and is not illustrated swung to the left. In the detailed image at the bottom right is further seen that the guideway 6 after the clamping portion S and the transition region Ü the Einrastbewegungsbereich E has. At the end of this Einrastbewegungsbereichs E is the latching region R, which is mitgebildet by the second Zugauslösungselement 47 attached locking stop 45. After this latching region R follows the ejection section A, wherein the locking pin 7 passes through the deflecting surface 79 in this ejection section A. Only when unlocking by overpressing the locking pin 7 reaches this deflecting surface 79. By contrast, when unlocking by pulling the locking stop 45 is pulled down so that the way for the locking pin 7 in the ejection section A is free and the ejection force memory 4 can relax. In the following 6 to 18 not always all reference signs are drawn. Of course, the reference numbers always apply mutatis mutandis to each of the Fig. 5 to 18 ,

If now according to Fig. 6 the movable furniture part 2 together with the drive device 1 is moved in the closing direction SR, the coupling element 33 comes into abutment with the body fixed driver 19. As a result, the coupling element 33 is pivoted due to the formation of the coupling element guide track 35 and guided therein guide member 74 about the pivot axis 73 and the driver 19 is caught in the catching area 34 of the coupling element 33. Due to the manual closing movement of the movable furniture part 2 in the closing direction SR, the coupling element 33 together with the transmission element 42 has Fig. 6 already a considerable way from the position according to Fig. 5 emotional. By this movement, the control element 29 is moved over the stop 43. Since, in turn, the clamping element 56 is formed on this control element 29, the connecting element 41 is also moved over the clamping stop 55. Since this connecting element 41 is in turn mounted in the pivot bearing 44 of the carriage 15, the entire carriage 15 and thus the ejection element 3 is displaced under tensioning of the ejection force accumulator 4 relative to the base plate 14. As a result of this displacement, the locking pin 7 also continues along the clamping section S already in the vicinity of the transitional region Ü. In Fig. 6 It is also already apparent that the control element 29 easily pivots over the guide element 57 and the control guide track 30.

According to Fig. 7 This pivoting movement of the control element 29 has continued further, as a result of which the stop 43 of the transmission element 42 has already moved along the control cam 9 on the control element 29. At the same time, the locking pin 7 has already passed over the transition region Ü and is at the beginning of Einrastbewegungsbereichs E. In previous versions takes place at this moment the decoupling of the ejection element 3 and the carriage 5 of the pressing movement of an operator and the carriage 15 was free. Thus, the full ejection force of the ejection force memory 4 could act on the locking pin 7 and moved it quickly and with great force along the Einrastbewegungsbereichs E in the catch region R. This has been disadvantageous in previous versions to a large noise and a large stress on the parts of the locking device. 5 In contrast, in the Fig. 7 it can be seen that the slide 15 has already been slightly decoupled from the transmission element 42 and its stop 43 via the ejection force accumulator 4, but due to the design of the control cam 9, no complete decoupling has yet occurred. Rather, the stop 43 and the control cam 9 forms a path translation mechanism and thereby an Arte damping device 8 for the locking pin 7. Thus, the kinetic energy acting on the locking pin 7 from the ejection force accumulator increases only slowly.

This is also out Fig. 8 it can be seen according to which the stop 43 has again moved along the control cam 9 and at the same time a further movement of the locking pin 7 in Einrastbewegungsbereich E is done. That the ejection force memory 4 has already moved the carriage 15 relative to the base plate 14 is also evident from that opposite Fig. 7 the Schlittenbahnbegrenzer 37 has moved relative to the carriage track 36.

In Fig. 9 there is no contact between the stop 43 and the control cam 9 of the control 29, whereby the full force of the ejection force memory 4 via the carriage 15, the pivot bearing 28 and the locking lever 16 acts on the locking pin 7. Since at the moment of full power exerting from the ejection force memory 4 on the locking pin 7 of these locking pin 7 but already in the locking area R, no loud noises and no large wear occurs. In this position according to Fig. 9 is that Further, it can be seen that due to the further movement of the transmission element 42, the connecting element 41 pivots clockwise against the force of the compression spring, not shown. This is done because the deflection stop 58 formed on the connecting element 41 is rejected or moved by the deflecting surface 59 formed on the transmission element 42. Furthermore, it is off Fig. 9 can be seen that the locking device 5 is indeed already in the locking position V, but the movable furniture part 2 is still in an open position OS. Due to the manual closing movement, however, the coupling element 33 has already moved so far relative to the base plate 14 that the Einziehkoppelelement 39 has moved from the angled end portion 80 of the retraction device 25 so that the Einziehkoppelelement 39 is coupled to the coupling element 33 formed on the coupling pin 60. The fact that the Einziehkoppelelement 39 is no longer in the angled end portion 80, the Einziehkraftspeicher 40 can relax under contraction, so that the entire movable furniture part 2 is moved further in the closing direction SR and the position according to Fig. 10 arrives. This position corresponds to a position just before reaching the closed position SS. In this Fig. 10 It can also be seen that due to the further movement of the transmission element 42 relative to the carriage 15, the connecting element 41 has pivoted on the Abweisanschlag 58 further in the clockwise direction. As a result, the clamping element 56 of the control element 29 comes out of engagement with the clamping stop 55 of the connecting element 41. In Fig. 10 Furthermore, it can be seen that the stop 43 of the transmission element 42 is now located between the delimiting elements 61 of the first pull release element 46, the arm 81 of the first pull release element 46 resting laterally on the elastic arm 62 of the second pull release element 47.

Now, if the Einziehkraftspeicher 40 according to Fig. 11 has relaxed, the closed position SS is according to Fig. 11 reached. According to this Fig. 11 also has the first Zugauslösungselement 46 rotated due to the pressure on the stop 43 and the transmission element 42 in a counterclockwise direction about the pivot bearing 49, wherein the arm 81 under bending of the elastic arm 62 now rests against the front of this elastic arm 62.

If now starting from this closed position SS according to Fig. 11 is pressed in the closing direction SR on the movable furniture part 2, the movable furniture part passes into the overpressure position ÜS according to Fig. 12 , Since the transmission element 42 via the guide boundary 52 according to Fig. 11 already reached the end of trained in the carriage 15 web 82 is moved relative to the base plate 14 when overpressing the entire carriage 15, whereby the locking pin 7 from the latching region R on the Abweisfläche 79 enters the ejection section A.

Alternatively, according to Fig. 13 unlocking by pulling done. It is based on the position according to Fig. 11 pulled on the movable furniture part 2, wherein via the coupling element 33, the transmission element 42 and its stop 43 is moved relative to the carriage 15. Since the stop 43 according to Fig. 11 is still trapped between the limiting elements 61, the first Zugauslösungselement 46 is rotated clockwise about the pivot bearing 49 by this pulling movement. Since the arm 81 of this first pull release element 46 abuts the end of the resilient arm 62 - which, when it is not resiliently yielded by this end but remains stiff - abuts the second pull release element 47, this pull release element 47 will resist the force of FIG Fig. 13 compressed spring 48 moves relative to the base plate 14, whereby the locking stop 45 away from the latching region R. As a result, the locking pin 7 is no longer held or latched in the latching region R and due to the spring force of the ejection force accumulator 4 enters the ejection section A.

Whether the locking device 5 has been unlocked by pulling or by overpressing, the drive device 1 then passes in any case in the open position OS Fig. 14 , With this movement, the first Zugauslösungselement 46 is further rotated via the stop 43 in a clockwise direction, whereby the second Zugauslösungselement 47 is moved so far against the force of the spring 48 until the first Zugauslösungselement 46 in the position according to Fig. 14 arrives.

During this ejection movement of the Einziehkraftspeicher 40 of the retraction device 25 is stretched over the coupling pin 16. The locking pin 7 returns to the clamping section S (see Fig. 15 ).

In Fig. 16 the Einziehkoppelelement 39 is again decoupled from the coupling pin 60 of the coupling element 33 and the Einziehkoppelelement 39 is held in the angled end portion 80 at tense Einziehkraftspeicher 40. According to Fig. 16 the ejection force accumulator 4 is not yet completely relaxed.

According to Fig. 17 However, the ejection force storage 4 has relaxed so far that now the carriage 15 rests on the slide plate 36 and the Schlittenbahnbegrenzer 37 in an end position on the base plate 14. The movable furniture part 2 is now free to move or can be z. B. still move through the triggered by the ejection force memory 4 momentum in the opening direction OR. Since the driver 19 is still held in the capture region 34 of the coupling element, the coupling element 33 together with the transmission element 42 is further moved relative to the carriage 15 in the further movement in the opening direction OR, wherein the stopper 43 already in accordance Fig. 16 comes into contact with the control element 29 formed on the stop 63, whereby the control element 29 along the control guide track 30 is moved by the transmission element 42 relative to the carriage 15.

According to Fig. 18 the transmission element 42 has moved relative to the carriage 15 so far that the control element 29 is again at the level of the connecting element 41. At the same time, the spring, not shown, between the connecting element 41 and the carriage 15 has relaxed due to the no longer rejected by the Abweisfläche 59 Abweisanschlags 58. In Fig. 18 Also, the coupling element 33 has reached the angled end portion of the coupling element guide track 35, so that the coupling element 33 has pivoted about the pivot bearing 73, so that the driver 19 is released from the capture region 34 of the coupling element 33. Thus, the starting position is again according to Fig. 5 reached.

Another type not according to the invention, in order - as in Wegübersetzungsmechanismus - not immediately to let the entire force from the ejection force memory 4 act on the locking pin 7, is that the ejection energy storage itself is damped. For this purpose, especially in the first in the opening direction OR acting movement range of the ejection force accumulator 4 of the overpressure ÜS to the closed position SS a damping device 8 the Reduce force transmission from the ejection force memory 4 to the carriage 15. This is schematically in Fig. 32 shown. In the diagram according to Fig. 32 It can be seen how the spring force F of the ejection force accumulator 4 acts along the path of movement of the movable furniture part 2. During normal ejection, which is represented by the dashed line, a high force of the ejection force accumulator 4 is immediately released when releasing the movable furniture part 2 in the Überdrückstellung ÜS, whereby the spring force F increases to a high Newton value N before reaching the closed position SS. Since the same applies to the transmission of power from the ejection force memory 4 to the locking pin 7 not only in the area between overpressure position ÜS and closed position SS, but also for the substantially identical drawer movement path area between transition area Ü and latching area R, it can be seen that upon reaching the latching area R From the ejection force memory 4, a very high spring force F acts on the locking pin 7 and on the guide track 6 in the latching area R, which can cause loud striking noises. In order to reduce this high power transmission in this Einrastbewegungsbereich E, either the damping Wegübersetzungsmechanismus according to the first non-inventive example or a damping device 8 (eg, linear damper) between the ejection force memory 4 and the carriage 15 is provided. For example, this damping device 8 may be integrated into the ejection force accumulator 4 or connected in parallel thereto.

Another example of a non-inventive drive device 1, in which the locking pin 7 is braked and / or attenuated in the latching region R can be stored, is in an exploded view in Fig. 19 shown. In this case, in turn, in the base plate 14, the guide track 6 together with latching region R is formed. This base plate 14 can be adjusted via the Tiefenverstellungsrad 65 relative to the movable furniture part 2, so that a front gap adjustment can be made. Along the coupling element guide track 35, the ejection element 33 or the carriage 15 is mounted movable relative to the base plate 14. On the carriage 15 and the coupling element 33 is pivotally mounted. In addition, with the carriage 15 and the synchronization element 67 is connected. About this synchronization element 67 arranged on opposite sides of the movable furniture part 2 drive devices 1 can be coupled or synchronized. On the carriage 15, the locking lever 16 via the locking lever pivot bearing 70 is rotatable or pivoted. On the locking lever 16 and the locking pin 7 is attached. Between the carriage 15 and the base plate 14 of the ejection force accumulator 4 is clamped. As an additional element according to this example, a base plate cover 64 is provided, in which the damping device 8 is formed. For this purpose, a gear rotary bearing 66 is formed in the base plate cover 64, in which the gear 11 is rotatably mounted. In order to achieve a good connection between the gear 11 and the gear bearing 66, the holding element 68 is provided, which presses the gear 11 to the gear bearing 66.

In Fig. 20 It can be seen in the details that the gear 11 and the gear bearing 66 have corresponding concentric grooves. For a good damping effect, a suitable, preferably viscous, damping medium, for example opanol, is present or filled in these grooves. Additionally is in Fig. 20 already recognizable that in the base plate cover 64, an opening 69 is formed. The edge of this opening 69 substantially coincides with a part of the guide track 6 and is correspondingly formed exactly opposite or above this area of the guide track 6 in the base plate 14 in the base plate cover 64. This edge of the opening 69 thus also corresponds in a region to the latching movement region E, in which a tooth 12 of the toothed wheel 11 protrudes in the assembled state.

In the Fig. 20a to 20g is another non-inventive example of a damping device 8 shown. In this variant can be dispensed with the use of a damping medium by the damping effect by friction between two components, which are preferably produced in a two-component injection molding, is generated. According to Figs. 20a and 20b is the star-shaped gear 11 and the holding member 68 can be seen, which together form the rotary damper 10. The holding element 68 made of steel has an upturned extension 83 and an opening, wherein the bent extension 83 simultaneously forms the geared rotary bearing 66. In the Figs. 20c and 20d is seen in the sections that the bent extension 83 protrudes into the existing plastic gear 11. Shortly after the two-component injection molding contact each other the bent extension 83 and the gear substantially on the entire surface (see Fig. 20e ). Due to the shrinkage 84 or the shrinkage of the plastic after injection molding, the connection between the bent extension 83 and the gear 11 is at least partially released (see Fig. 20f ). It creates an undersize to the plate thickness. As a result, the gear 11 can rotate relative to the retaining element 68. The torque can be adjusted by adjusting the wall thickness and the material selection. Fig. 20g shows the damping device 8 in the installed state on the base plate cover 64th

One possibility of the design of the damping device 8 in the form of a multi-component injection molding is in the 20h to 20k shown. According to these illustrations, the geared rotary bearing 66 is not formed as part of the holding element 68, but it is "molded" as a separate plastic part to the holding element 68 and protrudes through an opening in the holding element 68 therethrough. At this, the Zahnraddrehlager 66 forming plastic part is still another, the gear 11 forming plastic part rotatably mounted. The damping effect is generated by the friction between this gear 11 and the gear bearing 66.

It is no longer necessary with these embodiments of the damping device 8 damping medium, there are small torque fluctuations, a low temperature sensitivity is given and a longer life is achieved.

According to Fig. 21 the movable furniture part 2 is in an open position OS, wherein the locking pin 7 is still at the beginning of a clamping movement of the ejection force memory 4. It is also already apparent that a tooth 12 of the toothed wheel 11 projects into the engagement movement region E of the guideway 6.

If now the movable furniture part 2 is moved in the closing direction SR, the driver 19 is caught in the catching area 34 of the coupling element 33. At the same time the locking pin 7 moves along the clamping portion S (see Fig. 22 ).

According to Fig. 23 the locking pin 7 has overcome the transition region Ü and thereby enters the engagement movement region E, in which the full force of the ejection force accumulator 4 acts on the locking pin 7. This power can However, only act so long until the locking pin 7 abuts the 12 in the Einrastbewegungsbereich E projecting tooth. As soon as this locking pin 7 rests on this tooth 12, the movement of the locking pin 7 is braked due to the damping action of the rotary damper 10 and the locking pin 7 moves only slowly in the direction of the latching region R.

As soon as the gear 11 has moved counterclockwise to the extent of damping the movement of the locking pin 7 until it no longer projects into the engagement movement range E, then the locking pin 7 lies in accordance with FIG Fig. 24 in the latching region R of the guide track 6. Thus, the movement of the locking pin 7 is at least in a portion of the Einrastbewegungsbereichs E braked by the designed as a rotary damper 10 damping device.

In Fig. 25 is - as known per se - the Überdrückstellung ÜS shown in which passes by overpressing the movable furniture part 2 in a closing direction SR behind the closed position SS Überdrückstellung ÜS the locking pin 7 from the locking portion R on the Abweisfläche 79 in the ejection section A.

In Fig. 26 is then again reached an open position OS, in which the locking pin 7 returns to the area of the starting position. For a detailed description of the remaining components and the remaining processes of this non-inventive example according to the FIGS. 19 to 26 is omitted, since the basic process essentially corresponds to the first example not according to the invention and therefore referred to accordingly accordingly.

A further alternative, noninventive example of a possibility, the locking pin 7 braked or damped in the latching area R store is in the Fig. 27 and 28 specified. The basic structure corresponds according to this example not according to the invention according to the example FIGS. 19 to 26 , it is only the damping device 8 designed differently. In this example, which is not according to the invention, there is no rotational damper 10 in the region of the latching movement region E, but the pivotal movement of the locking lever 16 is damped by a damping device 8. This is this Damping device 8 in the region of the axis of rotation D of the locking lever 16 on the synchronization element 67 and the carriage 15. Concretely, in Fig. 28 in section that an axle 71 forms the axis of rotation D for the locking lever 16. Between this axle 71 and the locking lever 16 a friction brake 72 is arranged annularly. Because it is very strongly clamped in the region between the locking lever 16 and the axle pin 71, the pivoting movement of the locking lever 16 can be damped. Thereby, the locking pin 7 is moved slowed along the Einrückstrafungsbereichs E moves. Of course, other types of axle dampers are conceivable.

The variant according to the invention for the braked or damped depositing of the locking pin in the latching region R is in the Fig. 29 and 30 shown. In this case, the power transmission from the ejection force accumulator 4 is not damped on the carriage 15 and not the locking pin 7 braked in Einrastbewegungsbereich E, but it is provided in the latching region R, a damping device 8 in the form of a padding 13. This is in Fig. 29 it can be seen how the locking pin 7 reaches the engagement range E after passing over the transition area Ü. In this Einrastbewegungsbereich E, the locking pin 7 moves at full speed and under full load in the direction of latching area R, where he according to Fig. 30 arrives. In order to reduce the noise, the padding 13 is provided in the latching region R. As a result, the stopper is damped.

In Fig. 31 are summarized schematically summarized the basic inventive concept of the present invention. It is essential that the locking of the locking pin 7 in the latching region R of the guideway 6 is as quiet as possible.

For this purpose, according to a first embodiment not according to the invention ( Fig. 3 to 18 and Fig. 32 ) a damped movement region B along the Einlastbewegungsbereiches E be provided. This can take place in that, for example, the full force from the ejection force accumulator 4 does not act on the locking pin 7 or on the guide track 6 via a travel transmission mechanism or a linear damper along this latching movement region E.

According to another example not according to the invention ( Fig. 19 to 28 ), the movement of the locking pin 7 in this range of motion B at least partially by a damping device 8, for example in the form of a rotary damper or a swinging motion damper be braked.

As a third variant of the invention (see also Fig. 29 and 30 ), the stop is damped in the latching area R itself. For this purpose, the damping device 8 in the form of a padding 13, which is attached to the wall of the guide track 6, is formed.

In Fig. 13 is a non-inventive example of unlocking and ejection by pulling shown. Another variant not according to the invention for a release by pulling is in the FIGS. 33 to 36 shown, after which the drive device 1 has a rotatable about the pivot bearing 49 pull release element 46. This Zugauslösungselement 46 engages via an arm 81 in a trained in Zugauslösungselement 47 recess. At this Zugauslösungselement 47 of the locking stop 45 is formed. If starting from the closed position SS according to Fig. 34 is pulled in the opening direction OR on the movable furniture part 2, the Zugauslösungselement 46 is rotated by the stop 43 in a clockwise direction about the pivot bearing 49, so that over the arm 81, the Zugauslösungselement 47 is moved against the force of the spring 48 (see Fig. 35 ). As a result, the locking stop 45 is moved and releases a channel for the locking pin 7. As a result, the ejection force memory 4 can relax and the movable furniture part 2 is moved into an open position OS, wherein the locking pin 7 in the position according to Fig. 36 arrives.

Another non-inventive Zugauslösungsvariante is in the FIGS. 37 to 40 according to which the locking stop 45 is formed on a pull release element 47 movable transversely to the closing direction SR. If starting from the closed position SS according to Fig. 38 is pulled on the movable furniture part 2 in the opening direction OR, so the locking pin 7 itself moves the pull release element 47 together with locking stop 45 against the force of the spring 48 in the position shown in FIG. 39. Thus, the locking pin 7 is no longer locked and there is a channel for the Locking pin 7 free or open. Then, the ejection force memory 4 relax and push the movable furniture part 2 in the opening direction OR in an open position OS, whereby the locking pin 7 in the position according to Fig. 40 arrives.

Claims (10)

1. A drive device (1) for a moveable furniture part (2) comprising an ejection element (3), an ejection force storage means (4) and a locking device (5) for the ejection element (3), wherein the locking device (5) has a locking pin (7) which is acted upon by the ejection force storage means (4) and which is lockable in a locking position (V) in a latching region (R) of a guide path (6), wherein the latching region (R) has a latching recess which is fixed in position relative to the guide path (6), the latching recess having a wall, characterised in that in the latching region (R) on the wall of the guide path (6) a damping device (8) in the form of a cushioning (13) is attached, whereby the locking pin (7) which is acted upon by the stressed ejection force storage means (4) can be placed in the latching region (R) in braked and/or damped relationship.
2. A drive device as set forth in claim 1 characterised in that the guide path (6) is of a cardioid-shaped configuration.
3. A drive device as set forth in claim 2 characterised in that the cardioid-shaped guide path (6) has a stressing portion (S) in which the locking pin (7) is moveable upon stressing of the ejection force storage means (4) and a latching engagement movement region (E) of the locking pin (7) before the locking position (V) in the latching region (R) is reached.
4. A drive device as set forth in claim 3 characterised in that the latching region (R) is spaced in the opening direction (OR) of the moveable furniture part (2) from a transitional region (Ü) which is between the stressing portion (S) and the latching engagement movement region (E), preferably by between 0.2 mm and 3 mm.
5. A drive device as set forth in one of claims 1 through 4 characterised by a base plate (14) and a slider (15) forming the ejection element (3), wherein the slider is moveable relative to the base plate (14) and is lockable to the base plate (14) by way of the locking device (5).
6. A drive device as set forth in claim 5 characterised in that the ejection force storage means (4) which is preferably in the form of a tension spring is fixed on the one hand to the base plate (14) and on the other hand to the slider (15).
7. A drive device as set forth in claim 5 or claim 6 characterised in that the locking pin (7) is mounted rotatably to the slider (15) by way of a locking lever (16) and engages into the guide path (6) in the base plate (14).
8. A drive device as set forth in one of claims 1 through 7 characterised in that the ejection force storage means (4) can be loaded by opening and/or closing the moveable furniture part (2).
9. An article of furniture (17) comprising a furniture carcass (18), a furniture part (2) moveable relative to the furniture carcass (18) and a drive device (1) as set forth in one of claims 1 through 8 for the moveable furniture part (2).
10. An article of furniture as set forth in claim 9 characterised in that the base plate (14) of the drive device (1) is arranged on the moveable article of furniture (2) and an entrainment portion (19) which can be brought into engagement with the ejection element (3) is arranged on the furniture carcass (18).

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