EP2983558B1 - Drive device for a movable furniture part - Google Patents

Description

The invention relates to a drive device for a movable furniture part with an ejection element, an ejection force accumulator and a locking device for the ejection element, wherein the locking device has a lockable in a locking portion of a guide track in a locking position, acted upon by the ejection force accumulator locking pin, wherein the guideway is formed herzkurvenförmig and the heart curved guide track a clamping portion in which the locking pin is movable during clamping of the ejection force accumulator, and has a Einrastbewegungsbereich of the locking pin before reaching the locking position in the latching area. 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, whereby the hand no longer holds the ejection force accumulator in its cocked position, but the locking pin locks or holds the strained ejection force accumulator in the latching position in the locking position.

A critical area during clamping and locking is 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, the ejection force memory can act with relatively large force on this locking pin, which then strikes under relatively strong noise and large wear in the latching area.

From the DE 10 2011 002 212 A1 is a detent recess forming spring element known, but which only serves to enable a Zugentriegelung. The same applies to the US 2007/0090735 A1 and the CA 2 743 055 A1 ,

The WO 2007/112463 A2 deals with the problem of noise, but for which the entire movable furniture part is braked before the ejection energy storage is loaded.

From the alien EP 0 483 590 A1 shows that a toggle lever on which a bolt (= locking pin) is mounted, can slide smoothly on a housing wall via a spring tongue. The bolt is not acted upon by the opening spring.

In the alien US 4,828,344 the locking pin is not acted upon by the ejection force memory. Only the rotational movement of the pinion, in which the heart curve is formed, is braked by a braking force triggered by a silicone oil.

The object of the present invention is therefore to provide a comparison with the prior art improved drive device. In particular, should Locking can be done as quietly 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, the invention provides, inter alia, that the acted upon by the expelled Ausstoßkraftspeicher locking pin braked and / or attenuated in Einrastbewegungsbereich movable and can be stored in the latching area. Thus, the full force of the ejection force accumulator no longer acts on the locking pin upon reaching the latching region, but rather the movement of the locking pin is damped or braked before the latching region is reached.

In the case of such a heart-shaped guideway, provision is preferably made for the latching area to be spaced in the opening direction of the movable furniture part by a transitional area lying between the clamping section and the latching movement area, preferably by 0.2 mm to 3 mm. Since the locking pin from reaching the transition region of a movement of the movable furniture part, preferably completely, is decoupled and because the locking pin is thus moved by the ejection force memory along the Einrastbewegungsbereichs in the latching area, is exactly this distance between the transition region and the latching area in the previous heart-shaped curve Guideways the reason that relatively strong stop or locking noise occur due to the high force acting from the ejection force memory on the locking pin. 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.

According to the invention, it is further provided 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. With 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 variant for slowing down and / or damping the locking pin in the latching area is not to retard or control the transfer of kinetic energy to the locking pin, but to dampen or even move the locking pin itself - to which the full force of the ejection force accumulator already acts . to break. For this purpose, an embodiment according to the invention 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 area. 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.

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 a closing direction behind the closed position overpressure position and / or by pulling on the movable furniture part in an open position lying in front of the closed position.

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 arranged with the ejection element engageable driver 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 einer nicht erfindungsgemäßen Antriebsvorrichtung,

Fig. 5

bis 18 die nicht erfindungsgemäße Antriebsvorrichtung in verschiedenen Stellungen,

Fig. 19

eine Explosionsdarstellung der erfindungsgemäßen Antriebsvorrichtung,

Fig. 20

Details der erfindungsgemäßen Antriebsvorrichtung,

Fig. 20a - 20g

ein Ausführungsbeispiel der Dämpfvorrichtung hergestellt im ZweiKomponenten-Spritzguss,

Fig. 20h - 20k

ein Ausführungsbeispiel der Dämpfvorrichtung hergestellt im MehrKomponenten-Spritzguss,

Fig. 21 bis 26

verschiedene Stellung der zweiten Antriebsvorrichtung,

Fig. 27 bis 28

ein weiteres Beispiel einer nicht erfindungsgemäßen Dämpfvorrichtung,

Fig. 29 bis 30

eine nicht 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 a drive device not according to the invention,

Fig. 5

to 18 the non-inventive drive device in different positions,

Fig. 19

an exploded view of the drive device according to the invention,

Fig. 20

Details of the drive device according to the invention,

Fig. 20a - 20g

an embodiment of the damping device produced in two-component injection molding,

Fig. 20h - 20k

an embodiment of the damping device produced in multi-component injection molding,

FIGS. 21 to 26

different position of the second drive device,

FIGS. 27 to 28

another example of a damping device not according to the invention,

Fig. 29 to 30

a non-inventive damping device 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

Fig. 33

to 40 more 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 has Drive device 1a base plate 14 and a relative to the base plate 14 movable ejection element 3. 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, with the drive device 1 together with the base plate 14 being mounted on the drawer bottom 27 is. 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, against which the stop 43 of the transmission element 42 rests, depending on the position. These two components 43 and 9 together form a kind of path-translation mechanism and thereby attenuated by the damping device 8 to the locking pin 7 in the latching region R. move (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 pivoted about the pivot bearing 44 to the left due to a pressure spring springed between the spring base 53 and the spring base 54 and not shown. 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 latching range E is the locking portion R, which is formed by the attached to the second Zugauslösungselement 47 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. In 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 are not not always all the reference numbers are shown. 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 also has the Locking pin 7 already crossed over the transition region Ü and is located 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 a kind of 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 the control element 29 is loose and not kraftbeaufschlagt in the control guide path 30. It can also be seen that due to the further movement of the transmission element 42, the connecting element 41 in the clockwise direction against the Power pivoted by 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 limit 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 in the angled End section 80 held at tensioned 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 way to - 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 movement region of the ejection force accumulator 4 acting in the opening direction OR from the overpressure position ÜS to the closed position SS, a damping device 8 can reduce the force transmission from the ejection force accumulator 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. In normal ejection, which is represented by the dashed line, when releasing the movable furniture part 2 in the Überdrückstellung ÜS immediately release a high force of the ejection force accumulator 4, whereby the spring force F increases even before reaching the closed position SS to a high Newton value N. 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.

An inventive embodiment of a drive device 1, wherein the locking pin 7 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 rotatably or pivotably mounted. 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 embodiment, a base plate 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 inventive embodiment of a damping device 8 shown. In this variant can be dispensed with the use of a damping medium by the damping effect is generated by friction between two components, which are preferably produced in a two-component injection molding. 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, the bent-up projection 83 and the toothed wheel contact substantially 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. This can the gear 11 rotate relative to the support member 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. However, this force can only act until the locking pin 7 rests against the tooth 12 projecting into the engagement movement region E. As soon as this locking pin 7 rests against this tooth 12, the movement of the locking pin 7 due to the damping effect of the rotary damper 10 braked and the locking pin 7 moves only slowly in the direction of locking 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 operations of this embodiment according to the FIGS. 19 to 26 is omitted, since the basic procedure essentially corresponds to the first embodiment and therefore referred to accordingly accordingly.

A non-inventive example of a way, 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, the embodiment according to the FIGS. 19 to 26 , it is only the damping device 8 designed differently. In this example, 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. For this purpose, this damping device 8 is located in the region of the axis of rotation D of the locking lever 16 on the synchronization element 67 or on the carriage 15 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 is annular a friction brake 72 is arranged. 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 suspensions not conceivable are conceivable.

A variant not according to the invention for the braked or damped depositing of the locking pin in the latching area R is in the Fig. 29 and 30 shown. It is not the power transmission from the ejection force memory 4 is 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 and an elastically resilient element. 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 one embodiment ( Fig. 19 to 28 ) The movement of the locking pin 7 in this range of motion B at least partially from a damping device 8, for example, be braked in the form of a rotary damper or a swinging motion damper.

As a variant not according to the invention (see also Fig. 29 and 30 ), the stop may be damped in the latching region R itself. For this purpose, the damping device 8 in the form of a padding 13 and an elastic member which is attached to the wall of the guide track 6, be formed.

In Fig. 13 an example of unlocking and ejecting by pulling is shown. Another variant 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 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 Zugauslösungselement 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 can relax and pushes 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 (12)

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 guide path (6) is of a cardioid-shaped configuration and 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, characterised in that there is provided a damping device (8) which is operative between the ejection force storage means (4) and the locking pin (7) and which damps the kinetic energy transmitted from the ejection force storage means (4) into the locking pin (7) before the locking position (V) is reached, whereby the locking pin (7) which is acted upon by the stressed ejection force storage means (4) is moveable braked and/or damped in the latching engagement movement region (E) and can be placed braked and/or damped into the latching region (R), wherein the damping device (8) comprises a movable damping element and the damping element includes a gear (11) which is mounted in damped rotary relationship, wherein at least one tooth (12) of the gear (11) can be contacted by the locking pin (7) in the latching engagement movement region (E) and is moveable in damped relationship in the direction of the latching region (R).
2. A drive device as set forth in claim 1 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.
3. A drive device as set forth in claim 2 characterised in that the locking pin (7) can be preferably completely uncoupled from a movement of the moveable furniture part (2) as from attainment of the transitional region (Ü) so that the locking pin (7) is moveable into the latching region (R) along the latching engagement movement region (E) by the ejection force storage means (4).
4. A drive device as set forth in on of claims 1 to 3 characterised in that the kinetic energy acting on the locking pin (7) is reduced by the damping device (8) only in the latching engagement movement region (E) of the locking pin (7).
5. A drive device as set forth in on of claims 1 to 4 characterised in that the kinetic energy acting from the ejection force storage means (4) on the locking pin (7) is steadily increased along the latching engagement movement region (E) in dependence on the control cam (9).
6. A drive device as set forth in one of claims 1 to 5 characterised in that the damping element of the damping device (8) is a moveable damping element, preferably a rotational damper (10).
7. A drive device as set forth in one of claims 1 through 6 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).
8. A drive device as set forth in claim 7 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).
9. A drive device as set forth in claim 7 or claim 8 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).
10. A drive device as set forth in one of claims 1 through 9 characterised in that the ejection force storage means (4) can be loaded by opening and/or closing the moveable furniture part (2).
11. 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 10 for the moveable furniture part (2).
12. An article of furniture as set forth in claim 11 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).

Images