EP2983555A1

EP2983555A1 - Drive device for a movable furniture part

Info

Publication number: EP2983555A1
Application number: EP14719184.5A
Authority: EP
Inventors: Christof GÖTZ; Florian Fischer
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2013-04-12
Filing date: 2014-03-26
Publication date: 2016-02-17
Anticipated expiration: 2034-03-26
Also published as: ES2688460T3; WO2014165874A1; WO2014165875A1; ES2658414T3; AT514142A2; EP2983558B1; CN105228490A; KR101860621B1; US9642461B2; ES1205836Y; US9717334B2; MY172934A; US20150374125A1; US20160007750A1; JP2016518176A; KR101860622B1; EP2983558A1; AT514141B1; KR20150126409A; CN105228490B

Abstract

The invention relates to a drive device (1) for a moveable furniture part (2), comprising an ejection element (3), an ejection force accumulator (4) and a locking device (5) for the ejection element (3). Said locking device (5) comprises a locking journal (7) which in subjected to action of the ejection force accumulator, and can be locked in a locked position (V) in a region of a catch (R) on a guide rail (6). The catch area (R) comprises a locking pin which is fixed with respect to the guide rail (6). The locking journal (7) which is subjected to the force of the ejection force accumulator (4) is arranged in the catch region (R) such that it can be slowed down and/or dampened.

Description

Drive device for a movable furniture part

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 region of a guideway in a locking position acted upon by Ausstoßkraftspeicher locking pin. 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 10 201 1 002 212 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.

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.

In contrast, from the generic WO 2007/1 12463 A2 such a stationary detent well known. In addition, this document discloses the object 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 much braked before loading the energy storage that the residual energy is still sufficient Force memory to load, whereby the locking element is not locked at full movement of the movable furniture part - ie muted -.

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 just before reaching the locking area, so the fully charged ejection force memory 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 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 the acted upon by the tensioned ejection force accumulator locking pin braked and / or attenuated in the latching area can be stored. 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 or when the latching region is reached. In other words, there is in a locking device with a fixed detent recess instead of or in addition to a drawer closing motion damping a locking pin movement damping or braking.

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. In such a heart-shaped guideway, it is provided that the heart-shaped guideway has a clamping section, in which the locking pin is movable during clamping of the ejection force accumulator, and a latching movement area of the locking pin, before reaching the locking position in the latching area, wherein the latching area in the opening direction of the movable furniture part from a lying between the clamping portion and the Einrückstereichungsbereich 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 Anschlagbzw. 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 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 for example be done by the Locking pin through the path translation mechanism is cam-controlled in the latching range can be stored, wherein the path translation mechanism has a control curve through which the Äußoßkraftspeicher 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 to braked the locking pin and / or attenuated store in the locking area, is not to delay or control the kinetic energy transfer to the locking pin, but to dampen the movement of the locking pin itself - already acting on the full force of the ejection force memory or to 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 area. Thus, practically the tooth of the gear in the Einrastbewegungsbereich forms a kind of brake, so that the locking pin can not move unhindered in 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.

In a third variant, 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 contemplated that the damping device in the form of an elastic surface of the locking portion, preferably in the form of a padding, is formed. This will be 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 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. 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:

1 is a furniture with movable furniture parts in different positions,

2 is a 3D view of a movable furniture part,

3 shows the movable furniture part from below with a drive device,

4 shows an exploded view of the drive device, FIGS. 5 to 18 show the drive device in different positions,

9 is an exploded view of a second embodiment of

Driving device

20 details of the second drive device,

20a-20g an embodiment of the damping device produced in two-component injection molding,

20h-20k an embodiment of the damping device produced in multi-component injection molding,

21 to 26 different position of the second drive device,

27 to 28 another embodiment of a damping device,

29 to 30 a damping device in the form of a padded stop,

31 shows schematically the basic principle of the present invention,

Fig. 32 is a diagram of the spring force of the ejection force accumulator according to the first embodiment and

FIGS. 33 to 40 show further examples of pulling by pulling.

In Fig. 1, a piece of furniture 17 is shown with a plurality of movably mounted on the furniture body 18 movable furniture parts 2 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 drawer container 20 or the drawer rail 23, the Drive device 1 is mounted. As essential components, this drive device 1 has a 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 a pivotally mounted on the carriage 15 locking lever 16, the attached at the front end of the locking lever 1 6 locking pin 7 and formed in the base plate 14 guideway 6 together with latching region 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 lowermost illustration of FIG. 1, the release position or overpressure position ÜS is shown, in which the movable furniture part 2 is pressed in the closing direction SR in order to thus unlock the locking device 5. But it can also be done unlocking by pulling.

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 mounted on the drawer bottom 27, the drive device 1 together with the base plate 14 is. On the carcass rail 22, the drive plate 26 is fixed, on which the driver 19 is mounted.

4 shows an exploded view of the drive device 1, the two main components being the base plate 14 and the carriage 15 forming the ejection element 3. 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 6 is on

Swivel bearing 28 in the carriage 15 rotatably or pivotally mounted. 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 Path translation mechanism and thereby the damping device 8 to move the locking pin 7 attenuated in the latching area 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.

5, the entire movable furniture part 2 is 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. The detailed image at the bottom right shows that the Guide track 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. 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 FIGS. 6 to 18 described below are not always all reference numerals located. Of course, however, the reference numbers always apply analogously to each of FIGS. 5 to 18.

If, as shown in FIG. 6, the movable furniture part 2 together with the drive device 1 is moved in the closing direction SR, then the coupling element 33 comes into abutment with the body-fixed carrier 19. As a result, the coupling element 33 due to the formation of the coupling element guide track 35 and guided therein guiding element 74th pivoted about the pivot axis 73 and the driver 19 is caught in the capture region 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 transfer element 42 according to FIG. 6, has already moved by a considerable distance relative to the position according to FIG. 5. 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 pivots slightly over the guide element 57 and the control guide track 30. According to FIG. 7, this pivoting movement of the control element 29 has already continued, whereby 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, it can be seen in FIG. 7 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 taken place yet. 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 can also be seen in FIG. 8, according to which the stop 43 has moved further along the control cam 9 and, at the same time, a further movement of the locking pin 7 in the engagement movement region E has taken place. That the ejection force accumulator 4 has already moved the carriage 15 relative to the base plate 14 is also evident from the fact that the slide track limiter 37 has moved relative to the carriage track 36 in comparison to FIG. 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 exercise of the ejection force memory 4 on the locking pin 7 of these locking pin. 7 but already in the rest area R, no loud noises and there is no great wear on. In this position shown in FIG. 9, the control 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 Übertragungssefements 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 can be seen from FIG. 9 that although the locking device 5 is already in the locking position V, 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 of FIG. 10 passes. This position corresponds to a position just before reaching the closed position SS. In this Fig. 10 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 clockwise. As a result, the tensioning element 56 of the control element 29 is disengaged from the tensioning stop 55 of the connecting element 41. FIG. 10 shows that the stop 43 of the transmission element 42 is now located between the limiting elements 61 of the first tensioning element 46, the arm 81 of FIG first pull release element 46 laterally on the elastic arm 62 of the second Zugauslösungselements 47 abuts. Now, if the retraction force memory 40 has relaxed according to FIG. 11, the closed position SS according to FIG. 11 is reached. According to this Fig. 1 1, the first Zugauslösungselement 46 has due to the pressure on the stop 43 and the transmission element 42 counterclockwise about the pivot bearing 49th rotated, wherein the arm 81 under bending of the elastic arm 62 now rests against the front of this elastic arm 62.

If, starting from this closed position SS according to FIG. 11, the movable furniture part 2 is pressed in the closing direction SR, then the movable furniture part reaches the overpressure position ÜS according to FIG. 12. Since the transmission element 42 passes over the guide limiter 52 according to FIG 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, it can also be done according to FIG. 13 unlocking by pulling. It is based on the position shown in FIG. 1 1 pulled on the movable furniture part 2, wherein via the coupling element 33, the transmission element 42 and the stop 43 is moved relative to the carriage 15. Since the stop 43 is caught as shown in FIG. 1 1 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 against the end of the resilient arm 62 - which does not yield elastically but remains stiff - from the second pull release element 47, this pull release element 47 will be against the force of that compressed in FIG 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.

Regardless of whether the locking device 5 was unlocked by pulling or by over-pressing, the drive device 1 then passes in the open position OS shown in FIG. 14. With this movement, the first Zugauslösungselement 46 is further rotated via the stop 43 in the clockwise direction, whereby the second Zugauslösungselement 47 is moved against the force of the spring 48, until the first Zugauslösungselement 46 enters the position shown in FIG. 14. 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 accumulator 4 has relaxed to such an extent that now the carriage 15 rests on the base plate 14 via the carriage track 36 and the carriage track restrictor 37 in an end position. 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, the stopper 43 already in FIG. 16 in contact with the on the control 29th trained stop 63 passes, whereby the control element 29 is moved along the control guide track 30 from 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 level with 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, 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 shown in FIG. 5 is reached again.

Another way to - as the Wegübersetzungsmechanismus - not immediately act the entire force from the ejection force memory 4 on the locking pin 7 Let, 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 shown schematically in FIG. 32. The diagram according to FIG. 32 shows 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 embodiment or a damping device 8 (eg, linear damper) between the ejection force memory 4 and the carriage 15 is provided. For example, this can

Damping device 8 be integrated into the ejection force memory 4 or be connected in parallel to this.

A further embodiment of a drive device 1, in which the locking pin 7 braked and / or attenuated in the latching region R can be stored, is shown in an exploded view in Fig. 19. 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 33rd pivoted. 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 öbelteils 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, a base plate cover 64 is provided according to this embodiment, 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 1 1 and the gear bearing 66, the holding element 68 is provided, which the gear 1 1 to the gear bearing 66th suppressed.

In Fig. 20 it can be seen in the details that the gear 1 1 and the gear bearing 66 has corresponding concentric grooves. For a good damping effect, a suitable, preferably viscous, damping medium, for example opanol, is present or filled in these grooves. In addition, it can already be seen in FIG. 20 that an opening 69 is formed in the base plate lid 64. 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 corresponds in one area also to the latching movement region E, in which a tooth 12 of the toothed wheel 1 1 protrudes in the assembled state.

FIGS. 20a to 20g show a further exemplary embodiment of a damping device 8. 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 Fig. 20a and 20b, the star-shaped gear 1 1 and the holding member 68 can be seen, which together form the rotary damper 10. The made of steel holding element 68 has a bent extension 83 and an opening, wherein the bent extension 83 simultaneously forms the gear bearing 66. In FIGS. 20c and 20d, it can be seen in the sections that the bent extension 83 projects into the gearwheel 1 made of plastic. Shortly after the two-component injection molding, the bent-up projection 83 and the gear contact 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 1 1 at least partially dissolves (see Fig. 20f). It creates an undersize to the plate thickness. This allows the gear 1 1 rotate relative to the support member 68. The torque can be adjusted by adjusting the wall thickness and the material selection. FIG. 20 g shows the damping device 8 in the installed state on the base plate lid 64.

One possibility of the design of the damping device 8 in the form of a multi-component injection molding is shown in FIGS. 20h to 20k. According to these illustrations, the geared rotary bearing 66 is not formed as part of the retaining element 68, but is "molded" onto the retaining element 68 as a separate plastic part and protrudes through an opening in the retaining element 68. The plastic part forming the geared rotary bearing 66 is yet another , the plastic part forming the toothed wheel 11 is rotatably mounted The damping effect is generated by the friction between this toothed wheel 1 1 and the toothed wheel 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.

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 gear 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 section S (see FIG. 22). According to FIG. 23, the locking pin 7 has overcome the transition region Ü and thereby reaches the latching 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 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 1 1 has moved counterclockwise so far under damping of the movement of the locking pin 7 until it no longer protrudes into the Einrastbewegungsbereich E, the locking pin 7 is shown in FIG. 24 in the latching region R of the guide track 6. Thus, by Damping device 8 designed as a rotary damper 10 brakes the movement of the locking pin 7 at least in a partial section of the latching movement region E.

In Fig. 25 is - as known per se - the Überdrückstellung ÜS shown in which 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 latching area R on the deflecting surface 79 in the ejection section A. arrives.

In Fig. 26, an open position OS is then reached again, in which the locking pin 7 again comes into the range of the starting position. A more detailed description of the remaining components and the remaining sequences of this embodiment according to FIGS. 19 to 26 is dispensed with, since the basic sequence essentially corresponds to the first exemplary embodiment and is therefore referenced accordingly.

A further alternative embodiment of a possibility, the locking pin 7 braked or damped in the locking area R store, is shown in Figs. 27 and 28. The basic structure corresponds according to this embodiment, the embodiment of FIGS. 19 to 26, it is only the damping device 8 designed differently. There is no rotational damper 10 in the region of the Einrastbewegungsbereichs E, but the pivotal movement of the locking lever 16 is damped by a damping device 8 in this embodiment. 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. Specifically, it can be seen in section in section that an axle pin 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. A further variant for the braked or damped depositing of the locking pin in the latching region R is shown in FIGS. 29 and 30. 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. For this purpose, it can be seen in FIG. 29 how the locking pin 7 reaches the latching movement region E after passing over the transitional region 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 arrives as shown in FIG. 30. In order to reduce the noise, the padding 13 is provided in the latching region R. As a result, the stopper is damped. FIG. 31 once more schematically summarizes the basic inventive idea 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 exemplary embodiment (FIGS. 3 to 18 and FIG. 32), a damped movement region B can be provided along the loading movement region E. 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 a further embodiment (FIGS. 19 to 28), the movement of the locking pin 7 in this movement region B can be performed, at least in sections, by a damping device 8, e.g. be braked in the form of a rotary damper or a swinging motion damper.

As a third variant (see also FIGS. 29 and 30), the stop can 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 embodiment for unlocking and ejection by pulling is shown. Another embodiment for a release by pulling is shown in FIGS. 33 to 36, 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 shown in FIG. 34 on the movable furniture part 2 in the opening direction OR pulled, the Zugauslösungselement 46 is rotated by the stop 43 clockwise about the pivot bearing 49, so moved over the arm 81, the Zugauslösungselement 47 against the force of the spring 48 becomes (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 accumulator 4 can relax and the movable furniture part 2 is moved into an open position OS, wherein the locking pin 7 comes to the position shown in FIG.

A further Zugauslösungsvariante is shown in Figs. 37 to 40, after which the locking stop 45 at a transversely movable to the closing direction SR Zugauslösungselement 47 is formed. If starting from the closed position SS according to FIG. 38 on the movable furniture part 2 in the opening direction OR, the locking pin 7 itself moves the pull release element 47 together with the locking stop 45 against the force of the spring 48 into the position according to FIG. 39. Thus, the locking pin 7 is not more locked and there is a channel for the locking pin 7 free or open. Then the ejection force accumulator 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 enters the position shown in FIG. 40.

Claims

claims

1 . Drive device (1) for a movable furniture part (2) with an ejection element (3), an ejection force accumulator (4) and a

Locking device (5) for the ejection element (3), wherein the locking device (5) in a latching region (R) of a guide track (6) in a locking position (V) lockable, acted upon by the ejection force memory (4) locking pin (7), wherein the latching region (R) has a latching recess fixed relative to the guide track (6), characterized in that the locking pin (7) acted upon by the tensioned ejection force accumulator (4) is braked and / or damped in the latching region (R).

2. Drive device according to claim 1, characterized in that the guide track (6) is formed heart-curved.

3. Drive device according to claim 2, characterized in that the cardioid guideway (6) has a clamping section (S) in which the locking pin (7) is movable during clamping of the ejection force accumulator (4), and a latching movement area (E) of the locking pin (7 ) before reaching the locking position (V) in the latching region (R).

4. Drive device according to claim 3, characterized in that the latching region (R) in the opening direction (OR) of the movable furniture part (2) of a lying between the clamping portion (S) and the Einrastbewegungsbereich (E) transition region (Ü), preferably by 0 , 2 mm to 3 mm, is spaced.

5. Drive device according to claim 4, characterized in that the locking pin (7) from reaching the transition region (Ü) by a movement of the movable furniture part (2), preferably completely, can be decoupled, so that the locking pin (7) through the Ejection force memory (4) along the Einrastbewegungsbereichs (E) in the latching region (R) is movable.

6. Drive device according to one of claims 1 to 5, characterized in that between ejection force memory (4) and locking pin (7) acting damping device (8) is provided, which from the ejection force memory (4) in the locking pin (7) transmitted kinetic energy Reaching the locking position (V) dampens.

7. Drive device according to claim 6, characterized in that on the locking pin (7) acting kinetic energy by the damping device (8) only in Einrastbewegungsbereich (E) of the locking pin (7) is reduced.

8. Drive device according to claim 6 or 7, characterized in that the damping device (8) is designed in the form of a path translation mechanism.

9. Drive device according to claim 8, characterized in that the locking pin (7) is cam-controlled in the latching region (R) can be stored by the path translation mechanism.

10. Drive device according to claim 9, characterized in that the displacement gear mechanism has a control cam (9) through which the ejection force memory (4) acting on the locking pin (7) kinetic energy along the Einrastbewegungsbereichs (E) in response to the control cam (9 ), preferably steadily, increased.

1 1 .Antriebsvorrichtung according to claim 6, characterized in that the damping device (8) has a movable damping element, preferably a rotary damper (10).

12. Drive device according to claim 1 1, characterized in that the damping element comprises a damped rotatably mounted gear (1 1), wherein at least one tooth (12) of the toothed wheel (1 1) can be contacted in the latching movement region (E) by the locking pin (7) and is damped in the direction of the latching region (R).

13. Drive device according to one of claims 1 to 5, characterized in that the latching region (R) has a damping device (8).

14. Drive device according to claim 13, characterized in that the damping device (8) in the form of an elastic surface of the latching region (R), preferably in the form of a padding (13) is formed.

15. Drive device according to one of claims 1 to 14, characterized by a base plate (14) and a discharge element (3) forming the carriage (15), wherein the carriage relative to the base plate (14) movable and the Verriegeiungsvorrichtung (5) on the Base plate (4) is lockable.

16. Drive device according to claim 15, characterized in that the, preferably designed as a tension spring, ejection force accumulator (4) on the one hand to the base plate (14) and on the other hand on the carriage (15) is attached.

17. Drive device according to claim 15 or 16, characterized in that the locking pin (7) via a locking lever (16) rotatably mounted on the carriage (15) and engages in the in the base plate (14) formed guideway (6).

18. Drive device according to one of claims 1 to 17, characterized in that the ejection force memory (4) by opening and / or closing the movable furniture part (2) is loadable.

19. Furniture (17) with a furniture body (18), a relative to the furniture body (18) movable furniture part (2) and a drive device (1) according to one of claims 1 to 18 for the movable furniture part (2).

20. Furniture according to claim 19, characterized in that the base plate (14) of the drive device (1) on the movable furniture (2) is arranged and arranged with the ejection element (3) engageable driver (19) on the furniture body (18) is.