EP2948023B1 - Accelerating device for moveable furniture or domestic-appliance parts - Google Patents

Description

The invention relates to an acceleration device for movable furniture or household appliance parts, in particular for drawers or doors, according to the preamble of claim 1.

From the prior art are, for example from the EP 0 7669 39 A2 , Opening devices for movable furniture parts known in which an ejection mechanism accelerates a movable furniture part in the opening direction and thus ejected and the movable furniture part, such as a drawer, initially held in a closed position and unlocked by pulling or pressing against the ejection direction of the opening device while the movable Furniture part is moved out of the furniture body.

The spring tension systems used on such opening or closing devices for accelerating the moving furniture parts have largely linear spring rates and are in a continuous movement, for example, when inserting the movable furniture part back into its closed position in the furniture body stretched.

A disadvantage of the opening and closing devices known from the prior art is that, especially in the case of limited installation space ratios on the one side, short strong springs, in which the force difference between the tensioned and unstressed end position exerted on the movable furniture part is very large (high ΔF). wherein the abrupt demolition of the actuating force is perceived as negative by the operator after tensioning the spring. The use of springs with flat spring rate is not possible without additional deflection systems in the rule.

Another disadvantage of the systems known from the prior art is that when an interruption of a clamping operation, the energy previously absorbed by the spring is released again against the direction of movement, which causes the furniture parts to be opened or closed again in the starting position moving backwards and thus injuring the operator in the worst case.

To prevent this is for example from the DE 102 46 438 A1 a drawer system with an automatic retraction and a manually releasable holding system known, with a drawer against the spring force can be kept open at different points. The disadvantage here is that the operator has to intervene manually to release the lock, ie here must reach under the drawer for unlocking.

From the DE 10 2008 012 230 U1 an opening device for a pull-out guide for a drawer is known in which a latching mechanism allows latching of a spring tensioning system in two positions, namely in a first detent position at which a control is latched to a detent recess and a second position at which the control on a Stop a curve guide is held. An interruption of a tensioning process releases the energy previously absorbed by the spring against the direction of movement.

The object of the present invention is to provide an accelerating device for movable furniture parts, that is to say positively or negatively accelerating or assisting the opening and / or closing operation, in which a clamping of at least one force accumulator is connected to a driver of the accelerating device , harmless interruptible and that is easy to use.

This object is achieved by an acceleration device for movable furniture parts with the features of claim 1.

In the acceleration device according to the invention with a mounted on a housing of the ejection or retraction device deflecting devices, via which the energy accumulator is connected to a driver, wherein the energy storage is maximally tensioned in the first end position of the driver, the deflection device is coupled to a locking device, with the Force storage during a clamping operation in at least one intermediate position between a minimum tensioned position and a maximum tensioned position can be fixed, wherein the driver is tilted in the first end position in an angled end portion of a first guide rail of the housing and is engaged with a carriage.

This makes it possible that, for example, in a discharge device when reinserting, for example, a drawer into a furniture body, in which the power storage is stretched, the power storage is held as a result of reaching the closed position to weak push on the drawer in the direction of the closed position of the drawer in this intermediate position and thus the drawer directly or indirectly coupled thereto only partially and not completely pushed out of the furniture body becomes. A complete unloading of the energy storage before the end of the tensioning process of this energy storage is thus effectively prevented.

Advantageous embodiments of the invention are the subject of the dependent claims.

According to an advantageous embodiment of the invention, the deflection device on a the distance of the articulation point of the energy storage device from a rotation axis of the deflection during a tensioning or relaxation process changing flow curve. The deflection device has, in particular, a disc-shaped base body which is rotatable about an axis of rotation and on whose circumferential edge aligned parallel to the axis of rotation the connecting element connected to the driver and the main body of the deflection device, via which the carrier is connected via the deflection device, can be wound up during a rotation of the base body ,

By changing the distance of the point of application of the energy storage device from the fulcrum of the deflection device, a change in torque is effected, which has an advantageous effect on the ease of operation during the clamping operation of the movable furniture part, since a demolition actuation force described above is no longer felt or at least greatly attenuated is to change without the required closing or opening force of the system.

According to a further embodiment of the invention, the main body of the deflecting device has a groove extending radially to the axis of rotation, in which a parallel to the axis of rotation of the deflector extending driver is guided, which can be guided in a formed on the housing and / or a housing enclosing cover cam is. This control cam preferably has at least one locking position defining the intermediate position between a minimum tensioned position or a maximum tensioned position of the energy accumulator.

The combination of such a deflection device with a control cam so a formation of locking positions is possible in which the preferably constructed as a spring energy storage device can be held during clamping of the energy storage and a complete closing or opening of the movable furniture part in a simple manner by further pressing or Continuing to move the movable furniture part is made possible in its final position without having to solve the lock manually.

Figur 1

eine perspektivische Explosionsansicht einer Ausführungsvariante einer Beschleunigungsvorrichtung mit einem erfindungsgemäßen Kraftspeicherablagesystems;

Figuren 2 und 3

Draufsichten auf die als Ausstoßvorrichtung ausgebildete Ausführungsvariante einer Beschleunigungsvorrichtung mit einem erfindungsgemäßen Kraftspeicherablagesystems beim Auslösevorgang (bei abgenommenem Deckel);

Figur 4

eine Teilaufrissdarstellung der Ausstoßvorrichtung der Figur 2 mit Darstellung der in das Gehäuse und unter dem Deckel integrierten Steuerkurve im gespannten Zustand des Kraftspeichers;

Figur 5

eine Frontansicht der Ausstoßvorrichtung gemäß Figuren 1 bis 4 unmittelbar vor dem Ausstoßen des bewegbaren Möbelteils;

Figur 6

eine Detaildarstellung des mit VI in Figur 5 gekennzeichneter Details zur Darstellung der Freigabestellung des Schlittens;

Figuren 7 bis 12

weitere Frontansichten der Ausstoßvorrichtung in fortlaufenden Positionen während eines Ausstoßvorganges;

Figuren 13 und 14

Frontansichten der Ausführungsvariante der Ausstoßvorrichtung entsprechend der Figuren 3 und 4 beim Spannen des Kraftspeichers in eine Position, bei der der Kraftspeicher in einer ersten Sperrposition gehalten ist;

Figur 15

eine der Figur 14 entsprechend teilaufgerissener Frontansicht der Ausführungsvariante der Ausstoßvorrichtung in einer zweiten Sperrposition;

Figuren 16 bis 19

Frontansichten der Ausführungsvariante der Ausstoßvorrichtung kurz vor bzw. beim Erreichen der Schließposition; und

Figuren 20 und 21

Frontansichten einer dem Auslösevorgang beeinflussenden Einstellschraube der Ausstoßvorrichtung.

The invention will be explained in more detail by means of embodiments with reference to the accompanying drawings. Show it:

FIG. 1

an exploded perspective view of an embodiment of an acceleration device with a force storage storage system according to the invention;

FIGS. 2 and 3

Top views of the designed as an ejection device embodiment of an acceleration device with a power storage storage system according to the invention during the triggering process (with the cover removed);

FIG. 4

a partial elevational view of the ejection device of FIG. 2 with representation of the control cam integrated in the housing and under the cover in the tensioned state of the energy accumulator;

FIG. 5

a front view of the ejection device according to FIGS. 1 to 4 immediately before the ejection of the movable furniture part;

FIG. 6

a detail of the with VI in FIG. 5 marked details representing the release position of the carriage;

FIGS. 7 to 12

further front views of the ejector in continuous positions during a discharge operation;

FIGS. 13 and 14

Front views of the embodiment of the ejection device according to the Figures 3 and 4 during tensioning of the force accumulator in a position in which the force accumulator is held in a first locking position;

FIG. 15

one of the FIG. 14 according to partially opened front view of the embodiment of the ejection device in a second locking position;

FIGS. 16 to 19

Front views of the embodiment of the ejection device shortly before or when reaching the closed position; and

FIGS. 20 and 21

Front views of the triggering process influencing adjustment screw of the ejection device.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the housing, energy accumulator, driver, deflection device and the like chosen in the respective figures. These terms are not intended to be limiting, that is to say, by different working positions or the mirror-symmetrical design or the like, these references may change.

In the FIG. 1 is denoted by the reference numeral 1 in total designed as an ejection device embodiment of an inventive acceleration device for movable furniture parts.

The acceleration device will be described in the following description by way of example with reference to the ejector shown, wherein in this ejection device, a force storage 4 is tensioned during a closing operation of the movable furniture part, for example a displaceable relative to a furniture body push element such as a drawer, a sliding or a swinging door. However, the use of such an acceleration device is also conceivable, for example, as the closing operation of a movable furniture or household appliance supporting feeding device or as the opening and / or closing operation of a sliding door or held on hinged swing-open door.

In the FIG. 1 shown ejector 1 in this case has a housing 2 and a cover 2 closing the housing 2. In the housing 2, as in the exploded view of FIG. 1 can be clearly seen, a first guide track 25 and a second guide track 26 are provided, which are largely parallel to each other.

In the first guide track 25 while a driver 13 is guided, which can be locked in a conventional manner in a first end position in which a by means of this driver 13 ejectible movable furniture part is in its closed position. The driver 13 is tilted in this end position in an angled end portion of the first guide track 25.

To trigger an ejection operation is used to raise the driver 13 from its tilted position in the angled portion of the first guide belt 25 rotatably mounted on the housing 2 lever 8, the displacement of a protruding from the housing 2 carriage 15, in the second guide track 26th is movable and via a mounted on the carriage 15 actuated plunger 16, the ejected movable furniture part abuts by a slight movement of the carriage 15 against the ejection direction X one lever arm of the lever 8 pushes down, so that the other lever arm of the lever 8 one of the guide the driver 13 in the first guideway 25 serving pin of the driver 13, which engage in the guideway 25, engages under and thereby lifts the driver 13 from the angled end portion of the first guideway 25 out in the second guideway 26 parallel portion of the first guideway 25.

By lifting the driver 13 in the parallel to the second guide track 26 region of the first guide track 25, a tip of the driver 13 engages a stop of the carriage 15 and is brought in the ejection direction with the carriage 15 into engagement.

As further in FIG. 1 and for example in FIG. 2 shown, the driver 13 is connected via a second connecting element 9, a deflecting device 10 and a first connecting element 5 with a preferably designed as a tension force storage 4, wherein the force accumulator 4 is maximally tensioned when the driver 13 is in the position in the angled portion of first guideway 25 is positioned as it is in FIG. 2 is shown. The second connecting element 9, preferably a drawstring or a rope piece, is fixed with a first end 23 to the driver 13 and with a second end 24 in a receptacle 12 of a main body 28 of the deflecting device 10. It is also conceivable that the second connecting element 9 is designed as a rigid element, for example as a rack. Accordingly, a first connecting element 5 is fixed at one end to the force accumulator 4 designed here as a tension spring and with its other end likewise to the main body 28 of the deflecting device 10. Depending on the configuration of the force accumulator 4, there is also a direct connection of the force accumulator 4 to the deflecting device 10 conceivable.

The deflection device 10 consists, as in FIG. 1 can be clearly seen, essentially from a partially wheel-shaped base body 28 with the peripheral edge radially inwardly extending receptacles 12 for receiving the one end 24 of the second connecting element 9 and the one end of the particular designed as a piece of rope or tie first connecting element. 5

In the particular embodiment variant shown here, the deflecting device 10 is rotatably mounted on the housing 2 and the cover 3, wherein the distance of the articulation point of the energy accumulator 4 from a rotation axis 23 of the deflection device 10 has a changing over the course of an opening or closing operation curve.

The aligned parallel to the rotation axis 23 peripheral edge 27 of the body 28 serves to receive the connected to the driver 13 connecting element 9, which is wound on a rotation of the body 28 on this peripheral edge 27.

A portion of the edge 27 of the disk-shaped base body 28 has in a predetermined angular range of the main body 28 extending in the direction of deflection guide groove 11, in which a portion of the energy accumulator 4 and connected to the energy storage 4 and fixed to the main body 28 first connecting element 5 in a predetermined rotational angle range of the deflection device 10 radially adjacent to the rotational axis 23 of the deflection device. This makes it possible that the torque acting on the deflecting device 10 decreases by changing the point of application of the trained as a tension spring force accumulator 4 force on the deflection device 10 when approaching the closed position of the driver 13 and thus an abrupt demolition of the actuating force during clamping of the ejection device prevented.

As in the FIGS. 1 . 2 and 4 can be seen, a control cam 20 on the housing 2 and / or the housing 2 facing inside of the lid 3 is provided on the housing 2 in the deflection device 10, in which a guided in a radially to the axis of rotation 31 of the body 28 extending groove 19 Driver 18 is guided, so that the driver 18 is guided radially movable in the groove 19 of the base body 28 in a rotation of the deflecting device 10 in the controller 20. The control cam 20 has at least one intermediate position between a minimum tensioned position and a maximum tensioned position of the force accumulator 4 defining blocking position. In the embodiment shown in the figures, the cam 20 is formed with a first locking position 21 and a second locking position 22.

In an alternative embodiment variant, the driver 18 which can be guided in the control cam 20 is configured in such a way that it can be latched or clamped steplessly in the control cam 20 in the case of a movement of the base body 28 against the tensioning direction.

Based on FIGS. 2 to 18 An intended sequence of an ejection operation and a subsequent re-insertion operation of the ejection device 1 will now be described. As explained above, the shows FIG. 2 the starting position of the ejection device, in which the driver 13 rests in the angled region of the first guide track 25 and is in engagement with the carriage 15. The energy storage 4 is maximally tensioned in this position.

After triggering the ejection operation by moving the carriage 15 against the ejector X, wherein the driver 13 from the angled portion of the first guide track 25 in the second guide track 26 parallel portion of the first guide track 25, as shown in FIG FIG. 5 is shown, the driver 13 is pulled over the connecting element 9 and the deflection device 10 of the force accumulator 4, which is connected via the connecting element 5 with the deflection device in the ejection direction X, pushing the carriage 15 in the second guide track 26 in the ejection direction, until the driver 13 and the slide 15 have reached the other end of the respective guide track 25, 26 and the force accumulator 4 is thereby brought into the maximum possible relaxed position. This position is in FIG. 12 shown.

The FIGS. 7 to 11 show respective intermediate positions, in which it is particularly illustrated that the connecting element 5 is guided at the beginning of the ejection movement in the slot 11 of the base body 28 and thus the torque exerted on the deflection device 10 due to the small distance of the attacking attacking from the rotation axis 31 is relatively low and when turning the deflecting device 10 emerges from the slot 11 in a clockwise direction and rests on the peripheral edge 27 of the main body 28, which moves radially outward from the axis of rotation 23 according to its shape with increasing torsion angle, so that shortly before reaching the ejection end point of the carriage 15 or of the driver 13, the driver 13 is pulled with maximum torque in the end position.

As in the FIGS. 8 and 10 can be seen during this ejection process, the driver 18 along a predetermined path in the cam 20 is first performed on a concentric about the axis of rotation 31 track area of the control cam 20 and from a predetermined exceeded angle closer to the axis of rotation 31 (see FIG. 10 ).

In the subsequent insertion movement of the carriage 15 and the driver 13 back into the in FIG. 2 shown starting position, as in the FIGS. 13 to 18 is shown, the driver 13 by the pivotally mounted on the carriage 15 pendulum support 14 back into the in FIG. 2 pushed shown starting position. In this case, the energy storage 4 is stretched again. If the start of the carriage 15 is interrupted during the clamping operation, the driver 18 is during the passage of the radially inner path of the control cam 20 depending on the current position of the driver in a first locking position 21, shown in FIG FIG. 14 , or in a second locking position 22, shown in FIG FIG. 15 , run-in, whereby a recoil of the driver 13 is prevented due to the tensile force of the energy accumulator 4. So that by simply pushing the carriage 15 against the ejection device in the first or second locking position 21, 22 intercepted closing movement can be continued until the in FIG. 17 shown end position of the driver is reached.

As in the Figures 18 and 19 can be seen, the energy storage device 4 is attached via a power storage holder 6 to the housing 2 of the pullout device 1. This power storage holder 6 in this case has a preferably formed as a set screw adjustment 7, with which the bias of the energy storage device 4 by moving the power storage holder 6 in or against the ejection direction X is individually adjustable. FIG. 8 shows a position of the energy storage holder 6, in which trained as a tension spring energy storage 4 stretched weak, whereas in the FIG. 19 shown position of the energy storage holder 6 of the energy storage 4 is strongly biased.

To compensate for tolerances in the setting of the stroke for triggering the ejection device, an adjusting wheel 29 is further provided on the housing 2, with the lever 8 can be set in a predetermined starting position, so depending on the position of the adjusting, preferably with an eccentric Support edge 30 is provided, abuts in the remote from the driver 13 underside of the lever, the stroke of the lever 8 is adjustable. Different settings of the adjusting 29 are in the Figures 20 and 6 shown.

It is important that when closing a drawer with an ejector 1, as described above, in the event that the driver 13 pushes the drawer to close with too little force, by the locking device acting from the energy storage on the driver tensile force in at least one Intercepted position would be intercepted and thus only a fraction of the traction would be returned to the management system. The drawer would thereby be pushed at a much slower speed back towards the operator, with the operator then having the option of completely closing the drawer without manually releasing a lock by simply forcing it.

LIST OF REFERENCE NUMBERS

1

accelerator

2

casing

3

cover

4

power storage

5

first connecting element

6

Power storage holder

7

adjustment

8th

lever

9

second connecting element

10

deflecting

11

Guide groove / slot

12

admission

13

takeaway

14

Stabilizer

15

carriage

16

tappet

18

takeaway

19

groove

20

cam

21

lock position

22

lock position

23

first end of the connecting element

24

second end of the connecting element

25

first guideway

26

second guideway

27

circumferential edge

28

body

29

adjustment wheel

30

supporting edge

31

axis of rotation

Claims (13)

1. An accelerating apparatus for movable furniture or domestic-appliance parts, especially draws or doors, comprising

   - a housing (2);

   - an energy storage unit (4) which is fixed to the housing (2) with a first end;

   - at least one driver (13) which is displaceably arranged on the housing (2) and can be pretensioned by the energy storage unit (4);

   - a deflecting apparatus (10) which is mounted on the housing (2) and via which the energy storage unit (4) is connected to the driver (13),
   whereby

   - the deflecting apparatus (10) is coupled to a mechanical locking apparatus, with which the energy storage unit (4) can be fixed during a tensioning process in at least one intermediate position between a minimally tensioned position and a maximally tensioned position,

   characterized in that the energy storage unit (4) is maximally tensioned in the first end position of the driver (13), and that
   the driver (13) in the first end position is tilted in an angled end section of a first guide track (25) of the housing (2) and engages with a carriage (15).
2. An accelerating apparatus according to claim 1, characterized in that the driver (13) is connected via a first connecting element (9) to the deflecting apparatus (10).
3. An accelerating apparatus according to claim 1 or 2, characterized in that the first connecting element (9) is formed as a tension band.
4. An accelerating apparatus according to one of the preceding claims, characterized in that the deflecting apparatus (10) comprises a running curve which changes the distance of the linkage point of the energy storage unit (4) from a rotational axis (31) of the deflecting apparatus (10) during an opening or closing process.
5. An accelerating apparatus according to claim 3, characterized in that the deflecting apparatus (10) comprises a disc-shaped base body (28) which is rotatable about a rotational axis (31) and on whose circumferential edge (27 aligned in parallel to the rotational axis (31) the connecting element (9) which is connected to the driver (13) and the base body (28) of the deflecting apparatus (10) can be wound up during a rotation of the base body (28).
6. An accelerating apparatus according to one of the preceding claims, characterized in that a section of the edge (27) of the disc-shaped base body (28) has a constant distance (r) from the rotational axis (31) of the deflecting apparatus (10), and at least one further section of the edge (27) of the disc-shaped base body (28) has a distance from the rotational axis (31) of the deflecting apparatus (10) which deviates from the constant distance (r).
7. An accelerating apparatus according to claim 5 or 6, characterized in that a section of the edge (27) of the disc-shaped base body (28) comprises a guide groove (11) extending in the circumferential direction, in which a section of the energy storage unit (4) or a second connecting element (5), which is connected to the energy storage unit (4) and fixed to the base body (28), rests in a predetermined rotational angle range of the deflecting apparatus (10).
8. An ejection and/or self-closing apparatus according to claim 7, characterized in that the second connecting element (9) is formed as a tension band or a piece of cable.
9. An accelerating apparatus according to one of the preceding claims, characterized in that the base body (28) comprises a groove (19) extending radially to the rotational axis (31) and in which a driver (18) is guided which extends parallel to the rotational axis (31) and which can be guided in a control cam (20) integrally formed on the housing (2) and/or a cover (3) sealing the housing (2).
10. An accelerating apparatus according to one of the preceding claims, characterized in that the control cam (20) has at least one locking position (21, 22) defining the intermediate position between a minimally tensioned position and a maximally tensioned position.
11. An accelerating apparatus according to one of the preceding claims 1 to 9, characterized in that the driver (18) which can be guided in the control cam (20) is arranged in such a way that it can be latched or clamped in a continuously variable manner in the control cam (20) during a movement of the base body (28) against the tensioning direction.
12. An accelerating apparatus according to claim 11, characterized in that the driver (18) is arranged as a friction wheel.
13. An accelerating apparatus according to one of the preceding claims, characterized in that the driver (13) is displaceable in a first guide track (25) of the housing (2) and can be locked in a first end position, and a carriage (15) which can be coupled to the driver (13) and the movable furniture part is displaceably mounted in a second guide track (26) of the housing (2).

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