EP3307974B1 - Push-out device for a movable furniture part - Google Patents

Description

The invention relates to an ejection device for a movable furniture part, with a carrier, a rotatable ejection element for ejecting the movable furniture part from a closed position into an open position, wherein when the movable furniture part is ejected, the ejection element rotates in one direction about an axis of rotation oriented transversely to an ejection path of the ejection device is rotatable, an ejection force storage device that applies force to the ejection element in the opening direction of the movable furniture part, the ejection force storage device acting on the carrier on the one hand and the ejection element on the other, and a clamping device for tensioning the ejection force storage device via the ejection element. In addition, the invention relates to a piece of furniture with a furniture body, a movable furniture part and such an ejection device.

Various types of ejection devices for movable furniture parts, such as drawers, doors or furniture flaps, have been manufactured and sold in the furniture fittings industry for many years. Such ejection devices are also often referred to as touch-latch mechanisms or tip-on devices. With such ejection devices, a linear movement of the furniture part in the case of drawers or a pivoting movement in the case of furniture flaps or furniture doors is triggered. The movement carried out in the ejection device does not necessarily have to correspond to the movement path carried out by the furniture part. A displaceable ejector element can certainly eject a pivotable furniture door or vice versa.

A font in which a pivotable or rotatably mounted ejection element acts directly on a furniture door is EP 1 875 021 B1 . When opening, the ejection element pivots in one direction of rotation under the action of a spring. In order to tighten the ejection force accumulator again, when Closing is pressed through the furniture door onto the ejector element, causing it to rotate in the opposite direction to the original direction of rotation and as a result the ejector force accumulator tensions again. One of the disadvantages of this design is that the ejection element still remains in an ejection position when the furniture door is completely open. This ejection device can thus stand in the way of storing utensils in the furniture. It can also be disadvantageous, if there is an additional retraction device, that the ejection force accumulator is not tensioned again until it is closed.

The non-genus AT 413 933 B shows a piece of furniture with a movable furniture part and an energy store, which acts on an ejector that can be moved in a purely linear manner - and therefore cannot be rotated. The crank described in this document is not used for ejection, but for locking the ejector, which can be moved in a purely linear manner. Although the crank can rotate during the ejection movement exerted by the ejector, this rotation does not serve to eject the furniture part, but only to unlock the ejector through the first rotational path and later (after half a turn) to lock the ejector back in bring the clamping position.

From the also non-genus writings DE 20 2005 002 433 U1 and EP 2 064 405 A0 (equals to WO 2008/031814 A1 ) ejectors emerge that are based on the ballpoint pen principle. In such ejection devices, the ejection elements always rotate about an axis which is directed precisely in the direction of the opening or ejection path.

The object of the present invention is therefore to create an ejection device which is improved compared to the prior art or alternative to the prior art.

This is solved by an ejection device with the features of claim 1. Accordingly, it is provided according to the invention that when the ejection force accumulator is tensioned, the ejection element can be rotated in the same direction of rotation as when the movable furniture part is ejected. In other words, after ejection, the ejection element simply continues to rotate in the same direction, even during tensioning. As a result, there is no need to wait until the movable furniture part is moved in the closing direction again for clamping.

In principle, it is possible for the ejector element to rotate by only a relatively small range (e.g. an eighth of a turn) during clamping, while the ejector element rotates by a larger area (e.g. three-quarters of a turn) during ejection. However, in order to bring the necessary force into the ejection force accumulator, various transmission mechanisms can be provided. It is therefore not necessary for the ejection element to rotate by the same angular value during clamping and during ejection. Provision also does not have to be made for the ejector element to rotate by a total of 360° during clamping and during ejection. This can also only apply to sub-areas, e.g. B. a quarter turn. For a simple design, it is provided according to the invention that the ejector element covers a total rotational path in the form of a full revolution when ejecting the movable furniture part and when tensioning the ejection force accumulator, with the ejection element essentially covering half of the rotational path when ejecting the movable furniture part and during the subsequent tensioning of the Ejection force accumulator essentially covers the other half of the rotational path.

The movable furniture part can be moved along a furniture part opening path during ejection. This furniture part opening path can be linear (usually in the case of a drawer) or curved (for example in the case of a furniture door or flap). The ejection path of the ejection device can be essentially identical to the furniture part opening path of the movable furniture part and can also be linear (e.g. in the case of an ejection piston) or curved (e.g. in the case of an ejection lever). It can also be the case that the ejection path of the ejection device is linear, while the furniture part opening path of the movable furniture part describes a curve.

Irrespective of the precise design of the furniture part opening path or the ejection path, the invention provides that the ejection element is rotatable about an axis of rotation oriented transversely to the ejection path of the ejection device when the movable furniture part is ejected. The deviation of the axis of rotation from the ejection path can be 45° or 60°, for example. Provision is particularly preferably made for the ejection element to be rotatable about an axis of rotation oriented essentially at right angles to the ejection path when the movable furniture part is ejected. "Essentially" means here that, in the case of an ejection path describing a curve, said right-angledness is given only at the very beginning of the ejection path. As the ejection path continues, the alignment of the axis of rotation deviates more and more from being perpendicular to the ejection path.

According to the invention, a carrier is provided for easy assembly of the ejection device. This carrier can have, for example, a mounting plate and a cover, as a result of which the entire ejection device is arranged in a protected manner in a carrier designed as a housing. If such a carrier is present, it is provided that the ejection force accumulator acts on the carrier on the one hand and on the ejection element on the other.

In order to enable movement transmission from the movable furniture part to the ejection device and vice versa, it is provided according to the invention that the clamping device can be coupled to the movable furniture part via a coupling device.

According to the invention it is provided that by pulling the movable furniture part in the opening direction of the ejection force accumulator of the Clamping device can be clamped. This pulling tensioning movement preferably follows directly on from the ejection movement.

The ejection element can be that element of the ejection device which is also in direct contact with the movable furniture part. According to the invention, it is provided that the movable furniture part can be moved into an open position indirectly by the ejection element via a clamping element of the clamping device. The ejection element thus forms that component which is acted upon directly by the ejection force accumulator. The transmission of the rotational movement of this ejection element to the movable furniture part can be carried out via one or more components (e.g. transmission mechanisms) arranged in between.

If the ejection force accumulator is tensioned when the movable furniture part is pulled, a restoring force accumulator is preferably provided for moving the tensioning device into a return position.

Furthermore, a locking device for locking the ejection element in a locking position is preferably provided, wherein the locking device can be unlocked by pushing the movable furniture part into a pushing-over position located behind the closed position. Such locking devices can be designed, for example, in the form of a control pin that can be moved in a heart-shaped link track. According to a preferred embodiment, dead center locking is provided.

Protection is also sought for a piece of furniture with a furniture body, a movable furniture part (for example in the form of a furniture door, a furniture flap or a drawer) and an ejection device according to the invention for the movable furniture part. Such a piece of furniture can additionally also have a retractable device, preferably a damped one.

Fig. 1

ein Möbel mit einer Ausstoßvorrichtung gemäß einem ersten Ausführungsbeispiel,

Fig. 2

eine Explosionsdarstellung der Ausstoßvorrichtung gemäß dem ersten Ausführungsbeispiel,

Fig. 3

diese Ausstoßvorrichtung in zusammengebautem Zustand und

Fig. 4 bis 20

den Bewegungsablauf beim Ausstoßen und Spannen der Ausstoßvorrichtung gemäß dem ersten Ausführungsbeispiel,

Fig. 21

ein Möbel mit einer Ausstoßvorrichtung gemäß einem zweiten Ausführungsbeispiel,

Fig. 22

eine Explosionsdarstellung der Ausstoßvorrichtung gemäß dem zweiten Ausführungsbeispiel,

Fig. 23

diese Ausstoßvorrichtung in zusammengebautem Zustand und

Fig. 24 bis 37

den Bewegungsablauf einer Ausstoßvorrichtung gemäß dem zweiten Ausführungsbeispiel.

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

1

a piece of furniture with an ejection device according to a first embodiment,

2

an exploded view of the ejection device according to the first embodiment,

3

this ejection device in assembled condition and

Figures 4 to 20

the sequence of movements during ejection and clamping of the ejection device according to the first exemplary embodiment,

21

a piece of furniture with an ejection device according to a second embodiment,

22

an exploded view of the ejection device according to the second embodiment,

23

this ejection device in assembled condition and

Figures 24 to 37

the sequence of movements of an ejection device according to the second embodiment.

1 shows a piece of furniture 21 with a furniture body 22 and a movable furniture part 2 in the form of a furniture door. This movable furniture part 2 is pivoted about a vertical axis via two hinges 23 on the furniture body 22 . A damping device (not shown) for a closing movement can be integrated into at least one of these hinges 23 . An ejection device 1 according to a first exemplary embodiment is arranged on the furniture body 22 . The coupling counterpart 24 of this ejection device 1 is fixed to the movable furniture part 2 . Purely for illustration, this coupling counterpart 24 is also directly in the area Ejection device 1 located. In fact, of course, only that coupling counterpart 24 is present on the movable furniture part 2 . In principle, it is possible in all exemplary embodiments for the ejection device 1 to be arranged on the movable furniture part 2 and for the coupling counterpart 24 to be arranged or formed on the furniture body 22 . As a result, the ejection device 1 pushes itself off the furniture body 22, so to speak.

In 2 the ejection device 1 according to the first exemplary embodiment can be seen in an exploded view. This ejection device 1 has a carrier 3 as a base element, via which the ejection device 1 is mounted on the piece of furniture 21 . Together with a cover that is not shown, this carrier 3 can form a housing for the remaining components of the ejection device 1 . In the carrier 3, the clamping element 7 is slidably mounted. The displacement movement of this tensioning element 7 is dampened by the damping device 36 . The restoring force accumulator 15 acts on the clamping element 7 on the one hand and on the carrier 3 on the other hand. The clamping element 7 forms the clamping device 6 together with the movement transmission element 8 designed as a stop. The ejection force accumulator 5 designed as a tension spring engages on the one hand via the ejection element force storage base 29 on the ejection element 4 and on the other hand on the carrier force storage base 32 of the carrier 3 . The deflection element 38 is mounted pivotably on the tensioning element 7 via the pivot bearing pin 58 . Between the deflection element 38 and the tensioning element 7 there is also a deflection force accumulator 39 designed as a tension spring. A coupling device 26 is also provided. This coupling device 26 is mainly formed by the coupling piece 25 and the coupling counterpart 24 . The coupling piece 25 is slidably mounted in the guide track 28 of the tensioning element 7 . The coupling and decoupling element 27 is also displaceably arranged in this guideway 28 . In addition, a coupling lever 41 is provided, which is rotatably mounted in the pivot bearing 44 of the clamping element 7 and is guided on the one hand in the slot 48 of the coupling piece 25 and on the other hand, is articulated to one end of the coupling counterpart stop 43 . Also provided is a coupling force accumulator 40 designed as a tension spring, which acts on the coupling and decoupling element 27 on the one hand and on the coupling piece 25 on the other hand. In addition, a coupling lever force accumulator 42, also designed as a tension spring, is provided. This coupling lever force accumulator 42 acts on the coupling lever 41 on the one hand and on the tensioning element 7 on the other hand. Furthermore, a head part 37 that can be connected to the carrier 3 is provided.

In 3 the ejection device 1 according to the first exemplary embodiment can be seen in the assembled state. Already in this representation according to 3 It can be clearly seen that the carrier-energy storage base 32 and the ejector-energy storage base 29 lie in a plane containing the axis of rotation X of the ejector element 4 and the line of action W. The stop 45 formed on the coupling and decoupling element 27 can also be seen. Also recognizable in this 3 that the ejection element 4 bears against the triggering device 35 designed as a stop on the clamping element 7 .

In 4 12 is a plan view of the ejection device 1 according to FIG 3 shown. The coupling counterpart 24 attached to the movable furniture part 2 represents the position of the movable furniture part 2. Accordingly, the movable furniture part 2 is in a closed position SS. The locking device 17 is in the locking position VS, in which the line of action W of the ejection force storage device 5 passes through the axis of rotation X leads. The direction of action of the line of action W is indicated by the arrow and points in the closing direction SR. Since this line of action W runs through the axis of rotation X, the force of the tensioned ejection force accumulator 5 cannot unfold. As a result, the ejection element 4 is held at a dead center, so to speak. The carrier power storage base 32 (together with the carrier 3), the ejection force storage device 5 and the ejection element 4 thereby together form the locking device 17. The coupling device 26 is located in the Coupling position K, since the coupling piece 25 is coupled to the coupling counterpart 24.

If starting from this position according to 4 is pressed on the movable furniture part 2 in the closing direction SR, this movable furniture part 2 reaches the overpressing position ÜS according to FIG figure 5 . The clamping element 7 is also moved in the closing direction SR via the coupling counterpart 24, as a result of which the stop of the triggering device 35 rotates the ejection element 4 in the direction of rotation D—that is, counterclockwise—around the axis of rotation X. As a result of this overpressing, the axis of rotation X and the line of action W reach a relative unlocking position ES that is spaced apart from one another. Thus, the locking device 17 is unlocked.

Based on this unlocking position according to figure 5 the ejection force accumulator 5 can relax, as a result of which the ejection element 4 continues to rotate in the direction of rotation D (see 6 ). As a result, the end of the ejection element 4 facing away from the ejection element energy storage base 29 comes into contact with the ejection stop 46 formed on the clamping element 7. This means that the entire clamping element 7 is moved in the opening direction OR relative to the carrier 3, which in turn causes the movable furniture part 2 to , albeit still minor, open position OS arrives. At the same time, the ejection element 4 also pivots the deflection element 38 in a clockwise direction against the force of the deflection force accumulator 39.

In 7 the ejection force accumulator 5 has relaxed even further, as a result of which the furniture part 2 (represented by the coupling counterpart 24) has been moved even further into the open position OS. The movable furniture part 2 is thus indirectly ejected from the ejection element 4 via the clamping element 7 and the coupling piece 25 . Since the tensioning element 7 moves in the opening direction OR, the restoring force accumulator 15, which is designed as a tension spring, also begins to tension.

In 8 a quarter turn of the ejection element 4 is completed. The ejection force accumulator 5 has already relaxed essentially halfway. The movable furniture part 2 is in the open position OS, the locking device 17 in the unlocked position ES and the coupling device 26 in the coupling position K. The deflection force accumulator 39 is fully tensioned.

As per 9 the ejection element 4 has already moved further, the end of the ejection element 4 which is remote from the ejection element energy storage base 29 is again moved in the opposite direction (ie to the right in this case). As a result, the deflection force accumulator 39 can also relax again, as a result of which the deflection element 38 follows the ejection element 4 .

In between 9 and 10 the ejection device 1 reaches a position, not shown, in which the dead center opposite the locking position VS is reached, in which the carrier energy storage base 32, the ejection element energy storage base 29 and the axis of rotation X lie in one line in plan view. However, so that the ejection element 4 continues to move, starting from this neutral position or dead center position, the deflection force accumulator 39 relaxes further, as a result of which the deflection element 38 moves the ejection element 4 into the position according to FIG 10 emotional. In this position, the ejection path A of the ejection device 1 is complete. From this position, the clamping path S begins, in which the movable furniture part 2 is actively pulled. Since the clamping element 7 is coupled to the movable furniture part 2 via the coupling device 26, the ejection element 4 is also 11 moves in the opening direction OR via the movement transmission element 8 designed as a stop. As a result, when the ejection force accumulator 5 is tensioned, the ejection element 4 is rotated in the same direction of rotation D (counterclockwise) as when the movable furniture part 2 was ejected.

According to 12 the ejection element 4 has rotated even further in the direction of rotation D about the axis of rotation X by the movement transmission element 8 .

In 13 Finally, the tensioning path S of the tensioning device 6 is complete. Consequently, the ejection device 1 has moved in the opening direction OR by the opening path O (consisting of ejection path A and tensioning path S). At the same time, the ejection element 4 has also completed a full revolution, as a result of which the locking position VS is reached again, in which the line of action W of the ejection force accumulator 5 passes through the axis of rotation 5 . The restoring force storage device 15 is fully tensioned. The stop 45 on the coupling and decoupling element 27 rests against the head part 37, as a result of which the predetermined opening path VO for the control device formed by the coupling and decoupling element 27 for the coupling device 26 is reached or covered. The tip 47 of the coupling and decoupling element 27 is still in the foremost area of the coupling piece 25, whereby the head area of the coupling piece 25 is still spread and the two extensions of the head area spaced apart by a gap cannot bend towards one another. The coupling position K between the head area of the coupling piece 25 and the receiving area of the coupling counterpart 24 is given by a form-fitting hold. In 13 it is easy to see that the axis of rotation X of the ejection element is aligned at right angles to the ejection path A of the ejection device 1 .

If starting from this position according to 13 is pulled further on the movable furniture part 2, then there is a path-controlled decoupling of the coupling device 26 (see 14 ). First, the clamping element 7 is moved further in the opening direction OR via the coupling piece 25 . However, since the coupling and decoupling element 27, which forms a control device, is in contact with the head part 37, only the coupling piece 25 together with the tensioning element 7 moves in the opening direction OR relative to the carrier 3. As a result, the tip 47 of the coupling and decoupling element 27 is removed from the head area of the Coupling piece 25, whereby this head area is spread less or no longer. The extensions of the head area can thus bend towards one another. As a result, the decoupling position EK is reached and there is only a loose connection between the head area of the coupling piece 25 and the receiving area of the coupling counterpart 24 . Thus, the no longer spread coupling piece 25 from the coupling counterpart 24 according to 14 already solve. During the movement of the coupling and decoupling element 27 relative to the coupling piece 25 , the coupling force accumulator 40 also tensions since it acts on the coupling piece 25 on the one hand and on the coupling and decoupling element 27 on the other.

As soon as the coupling counterpart 24 has completely detached from the coupling piece 25, the movable furniture part 2 is in a freewheel state. At the same time, the coupling force accumulator 40 can relax again, as a result of which the coupling piece 25 is moved in the closing direction SR relative to the tensioning element 7 . As a result, the coupling lever 41 also pivots about the pivot bearing 44. With this movement, the coupling counterpart stop 43 is also moved out of the tensioning element 7, in that the coupling lever force accumulator 42 relaxes. When the coupling piece 25 is moved back, the head area of this coupling piece 25 gets between the side walls of the coupling piece guide 49, as a result of which the parts of the head area of the coupling piece 25 that are spaced apart from one another are pressed toward one another. As a result, the tip 47 of the coupling and decoupling element 27 cannot move all the way to the front in the coupling piece 25 . The coupling force accumulator 40 can therefore not relax completely, but only approximately half.

However, in order to be able to move the coupling piece 25 all the way into the coupling piece guide 49, according to FIG 16 the coupling lever force accumulator 42 and pivots the coupling lever 41 until the coupling piece 25 rests against the stop 59 of the tensioning element 7 . As a result, the coupling counterpart stop 43 is also fully extended. The tip 47 of the coupling and Decoupling element 27 is not yet completely in the foremost area of coupling piece 25.

away 16 or already from 15 The restoring force storage device 15 also begins to relax, whereby the position according to the first 17 is reached.

As a further consequence, the tensioning element 7 is further extended to the position according to FIG 18 drove in until finally in 19 the return position R is reached. Of 18 on 19 this return movement is damped by the damping device 36 . The movable furniture part 2 is still in an open position OS. The locking device 17 is in the locking position VS.

If finally according to 20 If the movable furniture part 2 is also closed, the coupling counterpart 24 first comes into contact with the coupling counterpart stop 43. As a result, the coupling piece 25 is first moved in the opening direction OR via the rotary movement of the coupling lever 41, as a result of which the head region of the coupling piece 25, which was not initially spread, moves into the Recording area of the coupling counterpart 24 engages. Since then the coupling piece 25 is no longer kept narrowing between the side faces of the coupling piece guide 49, according to 20 the coupling force accumulator 40 is also relaxed, as a result of which the tip 47 of the coupling and decoupling element 27 has again completely penetrated the head area of the coupling piece 25 and this spreads the head area open as a result. Thus is in 20 the coupling position K of the coupling device 26 is reached again. This 20 corresponds again to the starting position 4 .

In 21 a piece of furniture 21 including a furniture body 22 and a movable furniture part 2 with a second exemplary embodiment of an ejection device 1 is shown. Here, too, the movable furniture part 2 is again on hinges 23 with the furniture body 22 articulated. The coupling counterpart 24 of the ejection device 1 is attached to the movable furniture part 2 .

In the exploded view according to 22 the second exemplary embodiment of the ejection device 1 can be seen in detail. Again there is a carrier 3 which, together with a cover (not shown), can form a housing for the remaining components of the ejection device 1 . In the carrier 3, the clamping element 7 is slidably mounted. This tensioning element 7 is mounted on the carrier 3 so that it can move in a damped manner via the damping device 36 . The clamping element 7 is connected to the carrier 3 via the return force accumulator 15 . A guide track 28 for the coupling and decoupling element 27 is provided in the tensioning element 7 . This coupling and decoupling element 27 is pretensioned by a coupling force accumulator 40 in the left direction relative to the tensioning element 7 . In this case, the coupling force accumulator 40 is designed as an approximately V-shaped tension spring, the ends of this tension spring being held in the tensioning element 7 and bearing against the coupling and decoupling element 27 in a central area. Furthermore, a coupling element tensioner 56 connected to the carrier 3 is provided, which can be placed against the stop 45 of the coupling and decoupling element 27 . In addition, a head part 37 is also attached to the carrier 3 in this exemplary embodiment. A total of three ejection stops 46 are provided on the clamping element 7 , which correspond to the ejection rollers 51 arranged on the ejection element 4 . The ejection element 4 itself is rotatably mounted on the pivot bearing 57 of the carrier 3 via the axis of rotation X. In addition, the tensioning roller 52 is arranged on the ejection element 4 . An eccentric bolt 50 is arranged eccentrically on the ejection element 4 . The ejection force accumulator 5 is connected on the one hand to the ejection element 4 via the ejection element force storage base 29 and on the other hand to the carrier 3 via the carrier force storage base 32 . Furthermore, a triggering device 35 is also provided, which is formed by the triggering element 55, the triggering spring 54 and the triggering clip 53 in this exemplary embodiment. This release bar 53 is held in the recess 60 of the carrier 3 .

In 23 the second exemplary embodiment of the ejection device 1 is shown in the assembled state. The stop 45 of the coupling and decoupling element 27 is in contact with the coupling element tensioner 56 . It can also be seen that the carrier energy storage base 32 and the ejection element energy storage base 29 lie in the illustrated locking position VS in a plane containing the axis of rotation X of the ejection element 4 and the line of action W.

one to 23 suitable plan view of the ejection device 1 is in 24 shown. The position of the coupling counterpart 24 corresponds to the position of the movable furniture part 2, which is in the closed position SS. In addition, the locking device 17 is in the locking position VS, since the line of action W of the ejection force accumulator 5 passes through the axis of rotation X. The front side of the release bar 53 rests against the eccentric pin 50 . In turn, an end area of the triggering element 55 bears against the knee area of this triggering clip 53 . The other end of this triggering element 55 rests against the coupling counterpart 24 . The head area of the coupling piece 25 is spread by the tip 47 of the coupling and decoupling element 27, but since the head area of the coupling piece 25 is not in the receiving area of the coupling counterpart 24, the coupling device 26 is still in a decoupling position EK.

If now, starting from this closed position according to SS 24 is pressed onto the movable furniture part 2 in the closing direction SR, the movable furniture part 2 reaches the overpressing position ÜS according to FIG 25 . Since the release element 55 rests against the coupling counterpart 24 and the flexible release bracket 53 rests against the release element 55 via its knee area, the end face of the release bracket 53 is pressed onto the eccentric pin 50, as a result of which the ejection element 4 is rotated in the direction of rotation D about the axis of rotation X. As a result, the axis of rotation X and the line of action W reach a mutually spaced, relative unlocking position ES. Thus the Locking device 17 unlocked. (In the exemplary embodiments shown here, the ejector element energy storage base 29 is always moved for locking. In principle, however, it would also be possible for the axis of rotation X to be displaced when overpressing in such a way that it moves at a distance from the line of action W. As a result, the line of action W would remain in Relative to beam 3 unchanged, but the axis of rotation X would move relative to beam 3.)

As soon as an operator of the piece of furniture 21 no longer presses on the movable furniture part 2, according to FIG 26 to relax the ejection force accumulator 5 further. This ejection force accumulator 5 takes the ejection element 4 with it and rotates it further in the direction of rotation D counterclockwise. As a result, the first of the three ejection rollers 51 comes into contact with a first of the three ejection stops 46, as a result of which the clamping element 7 is moved by the ejection element 4 in the opening direction OR. Since the coupling piece 25 is formed in one piece with the tensioning element 7, the coupling counterpart 24 and with it the movable furniture part 2 are also moved in the opening direction OR via the head region of the coupling piece 25. As a result, the movable furniture part 2 is in an open position OS, albeit slightly open. The locking device 17 is in an unlocked position ES. The coupling device 26 is still in a decoupling position EK. According to 26 the clamping element 7 has already been moved slightly in the opening direction OR relative to the carrier 3. However, since the coupling element tensioner 56 is fastened to the carrier 3 and the stop 45 rests against this coupling element tensioner 56, the coupling and decoupling element 27 forming the control device does not move with the tensioning element 7 in the opening direction OR. As a result, the tip 47 of the coupling and decoupling element 27 moves away from the head area of the coupling piece 25. The head area of the coupling piece 25 is thus spread less.

As per 27 the tip 47 is retracted even further relative to the coupling piece 25, the head region of the coupling piece 25 no longer becomes spread and this head area can slide into the receiving area in the coupling counterpart 24 due to the mutually bendable design of its two extensions. As a result, however, only a loose connection between the coupling piece 25 and the coupling counterpart 24 is achieved. Due to the relative movement of the coupling and decoupling element 27 to the clamping element 7 along the guideway 28 is according to 27 the coupling force accumulator 40 tensioned. According to 27 the ejector element 4 has also already rotated further, as a result of which a second ejector roller 41 comes into contact with a second ejector stop 46 .

Upon further rotation of the ejection element 4 according to 28 one end of the elastic coupler stretcher 56 comes into contact with the ejection member 4, whereby the coupler stretcher 56 is slightly bent to the left. As a result, the stop 45 of the coupling and decoupling element 27 is no longer held by the coupling element tensioner 56, as a result of which the coupling force accumulator 40 can relax. As a result, the coupling and decoupling element 27 also moves again relative to the tensioning element 7 in the opening direction OR, as a result of which the tip 47 of the coupling and decoupling element 27 reaches the head region of the coupling piece 25 and spreads it. As a result, a secure form-fitting hold and thus the coupling position K between the coupling piece 25 and the coupling counterpart 24 is achieved, which cannot be released without a relative movement of the coupling and decoupling element 27 to the coupling piece 25 .

According to 29 half a rotation of the ejection element 4 is completed. Consequently, the ejection force accumulator 5 has completely relaxed and the ejection element 4 is again in a neutral position. The ejection path A of the ejection device 1 is thus completed. The restoring force accumulator 15 has already stretched to about half. From this one 29 is now pulled on the movable furniture part 2 in the opening direction OR.

Through this further pulling movement, which 30 has already started, the clamping element 7 is moved further in the opening direction OR relative to the carrier 3 . Since a third ejection roller 51 is still in contact with a third ejection stop 46, the ejection element 4 is also rotated further in the same direction of rotation D as when the movable furniture part 2 was ejected during this tensioning of the ejection energy store 5. At the same time, the tensioning roller 52 also comes into contact with the movement transmission element 8. This movement transmission element 8, designed as a stop, together with the tensioning element 7, forms the tensioning device 6 for the ejection force accumulator 5. This is in 30 already partly excited again.

According to 31 the movable furniture part 2 was moved even further in the opening direction OR and at the same time the ejection element 4 was rotated further in the direction of rotation D, as a result of which the eccentric pin 50 rests against a flank of the release clip 53 and this release clip 53 already bends slightly to the right due to its flexibility, as is well known in the The detailed section shown at the top right can be seen.

In 32 the movable furniture part 2 was moved even further in the opening direction OR, as a result of which the ejection element 4 rotated even further. As a result, the eccentric bolt 50 bends the release bracket 53 even more clearly (see detail at top right).

With further movement, the eccentric bolt 50 finally passes the release bracket 53, whereby both components return to their original position according to Figure 33 reach. The position of the triggering element 55 is also adjusted again by the triggering spring 54 in such a way that the triggering element 55 protrudes from the carrier 3 by the gap dimension. According to Figure 33 the clamping path S is also completed, which together with the ejection path A results in the opening path O of the ejection device 1. During the movement of the ejector 1 of 32 on Figure 33 comes the stop 45 of the coupling and Decoupling element 27 in contact with the head part 37. The predetermined opening path VO is reached. As a result, this coupling and decoupling element 27 is also moved relative to the tensioning element 7 with the charging of the coupling energy store 40, as a result of which the tip 47 of the coupling and decoupling element 27 comes out of the head area of the coupling piece 25 and no longer spreads the extensions of this head area. As a result, the decoupling position EK of the coupling device 26 is reached. However, there is still a loose connection between the head area of the coupling piece 25 and the receiving area of the coupling counterpart 26 .

If now starting from this position according to Figure 33 If the movable furniture part 2 is pulled further, the coupling counterpart 24 can detach from the coupling piece 25 by bending the extensions of the head area towards one another and the loose connection is also eliminated.

Once this decoupling position EK has been reached, the restoring force accumulator 15 can also relax again and initially moves the tensioning element 7 in the closing direction SR until the position according to FIG Figure 35 . Simultaneously with this movement or from the point in time at which the stop 45 is no longer in contact with the head part 37, the coupling force accumulator 40 can also relax. As a result, the tip 47 of the coupling and decoupling element 27 is moved into the head area of the coupling piece 25, as a result of which the latter is spread again.

In Figure 36 the restoring force accumulator 15 has completely relaxed. This return movement is dampened by the piston of the damping device 36 . As a result, the return position R of the return device 13 or of the return force accumulator 15 is reached. The movable furniture part 2 - represented by the coupling counterpart 24 - is still in the open position OS.

If finally according to 37 also the movable furniture part 2 is moved in the closing direction SR, the movable furniture part 2 reaches the Closed position SS. In this closed position SS the coupling counterpart 24 is again in contact with the release element 55 . The locking device 17 is in the locking position VS. The coupling device 26 is in the decoupling position EK. 37 corresponds again to the starting position 24 .

Finally, it should also be pointed out that the same functional components are provided with the same reference symbols in the exemplary embodiments. The advantages and options mentioned for the exemplary embodiments also apply analogously to the other exemplary embodiments.

Claims (6)

1. An ejection device (1) for a movable furniture part (2), comprising

   - a carrier (3),

   - a rotatable ejection element (4) for ejecting the movable furniture part (2) from a closed position (SS) into an open position (OS), wherein, when the movable furniture part (2) is ejected, the ejection element (4) can be rotated about a rotary axis (X), the rotary axis (X) being oriented transversely to an ejection path (A) of the ejection device (1) in a rotary direction (D),

   - a force storage member (5) force-actuating the ejection element (4) in opening direction (OR) of the movable furniture part (2), wherein the force storage member (5) on the one hand engages the carrier (3) and on the other hand engages the ejection element (4), and

   - a tensioning device (6) for tensioning the ejection force storage member (5) by means of the ejection element (4), wherein the tensioning device (6) can be coupled to the movable furniture part (2) by means of a coupling device (26) and the ejection force storage member (5) can be tensioned by the tensioning device (6) by pulling the movable furniture part (2) in opening direction (OR),

   wherein when the ejection force storage member (5) is tensioned, the ejection element (4) can be rotated in the same rotary direction (D) as when the movable furniture part (2) is ejected, wherein the movable furniture part (2) can be indirectly moved in an open position (OS) by the ejection element (4) via a tensioning element (7) of the tensioning device (6), wherein the ejection element (4), when ejecting the movable furniture part (2) and when tensioning the ejection force storage member (5), in total travels a rotary path in form of a full revolution, wherein the ejection element (4) substantially travels one half of a full revolution when ejecting the movable furniture part (2) and substantially travels the other half of the rotary path when subsequently tensioning the ejection force storage member (5).
2. The ejection device according to claim 1, characterized in that the carrier (3) is formed as a housing.
3. The ejection device according to claim 1 or 2, characterized by a retrieving force storage member (15) for moving the tensioning device (6) into a retrieved position (R).
4. The ejection device according to one of the claims 1 to 3, characterized by a locking device (17) for locking the ejection element (4) in a locking position (VS), wherein the locking device (17) can be unlocked by overpressing the movable furniture part (2) into an overpressing position (US) located behind the closed position (SS).
5. The ejection device according to one of the claims 1 to 4, characterized in that the rotary axis (X) is oriented rectangular to the ejection path (A) of the ejection device (1).
6. An item of furniture (21), comprising a furniture carcass (22), a movable furniture part (2) and an ejection device (1) according to one of the claims 1 to 5 for the movable furniture part (2).

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