EP4108875A1 - Discharge device for a mobile furniture item - Google Patents

Abstract

Ejection device (1) for a movable furniture part (2), with an ejection element (4) rotatable about an axis of rotation (X) for ejecting the movable furniture part (2) from a closed position (SS) into an open position (OS), an ejection element ( 4) force-loading ejection force accumulator (5) and a locking device (17) for locking the ejection element (4) in a locking position (VS), with the line of action (W) of the ejection force accumulator (5) passing through the axis of rotation (X) in the locking position (VS) leads.

Description

The present invention relates to an ejection device for a movable furniture part, with an ejection element rotatable about an axis of rotation for ejecting the movable furniture part from a closed position into an open position, an ejection force accumulator applying force to the ejection element, and a locking device for locking the ejection element in a locking position. In addition, the invention relates to a piece of furniture with a furniture body, a movable furniture part and such an ejection device.

Various aids have been manufactured and sold in the furniture hardware industry for many years to assist and simplify movements of movable furniture parts for an operator. There are already various different variants, especially in the case of ejection devices. Such ejection devices are also often referred to as touch-latch mechanisms or tip-on devices. With devices of this type it is possible to press on the movable furniture part in a closed position, as a result of which the locking device is unlocked and the movable furniture part is thereby or subsequently ejected by the ejection device.

Heart-shaped link tracks with a detent recess for a control pin have proven effective for locking for years. For example, you can refer to the AT 512 699 A1 to get expelled.

There are also locks that are based on the ballpoint pen principle.

Another type of locking is from the WO 2014/082106 A1 known, in which in a locked position of a Driver movement of a bolt is inhibited in an unlocked position by mechanical contact between the bolt and driver. By moving the movable furniture part against the opening direction, this mechanical contact between the latch and the catch can be eliminated, which in turn causes the movable furniture part to be subsequently ejected.

Another alternative variant of a lock is from the WO 2012/155165 A2 out. In a locked position that is in 15 is shown, there is a center articulated lever pin of an articulated lever above an imaginary line between a retaining lug pin and an ejection pivot axis. If according to 16 is pressed on the movable furniture part in the closing direction, an unlocking element comes into contact with a part of the articulated lever and thereby moves the articulated lever bolt below the imaginary line between the ejection pivot axis and the retaining lug bolt. This allows the spring force of an opening spring to relax. i.e. as soon as the articulated lever bolt has passed the dead center in the form of the imaginary line, the locking device is unlocked.

From the non-generic WO 2007/116572 A1 discloses a device for assisting the sliding movement of a drawer. However, this does not show an ejection device for ejecting the drawer from a closed position, but rather it shows an embodiment in which the movement of a drawer from an already open position into an even more open position is supported.

The object of the present invention is to create an ejector device that is alternative or improved to the prior art. In particular, the overpressure path (gap between the front panel and the furniture body) should be as small as possible.

This is solved by an ejection device with the features of claim 1. Accordingly, it is provided according to the invention that in the locked position the line of action of the ejection force accumulator runs through the axis of rotation. In other words, such a locking position of a locking device is comparable to the unstable position of a pendulum. The smallest forces or movements are sufficient to bring it out of the "unstable" position corresponding to the locked position. The line of action or line of action represents a straight line that indicates the instantaneous position of a force (in this case the force of the ejection force accumulator) in space. Together with the sense of direction, the effective direction results. If this line of action runs through the axis of rotation, the ejection force accumulator cannot move the ejection element since there is no momentum for rotation about this axis of rotation. Thus, this locking device forms a kind of dead center locking. Undesirable triggering or unlocking of this locking device due to vibrations is achieved by appropriately adjusted friction and inertia between the components involved.

In principle, it is possible for locking to take place by pressing a separate release button. According to a preferred exemplary embodiment, however, it is provided that the locking device can be unlocked by pushing the movable furniture part into a pushing-over position behind the closed position, in that the axis of rotation and the line of action reach a relative unlocking position spaced apart from one another. As soon as the line of action no longer runs through the axis of rotation, the force of the ejection force accumulator attacks the ejection element eccentrically, causing it to start rotating. In particular, a triggering device that can be placed on the ejection element is provided, with the ejection element being rotatable by the triggering device when it is pushed over, whereby the line of action and the axis of rotation in the reach relative unlocking position. It is then provided that, starting from the relative unlocking position, the ejection element can be rotated about the axis of rotation by the ejection force accumulator, so that the ejection element, preferably indirectly via a clamping element, ejects the movable furniture part in the opening direction. For the unlocking, it is particularly preferred that the triggering device in the locking position bears against the ejection element on the one hand and on the movable furniture part on the other hand. In principle, it is entirely possible for the ejection element itself to be in direct contact with the movable furniture part. However, at least one intermediate part is preferably provided, namely in the form of a tensioning element (or other transmission mechanism). The ejection element is therefore that element which is acted upon directly by the ejection force accumulator and is locked in the locking position.

In principle, it is possible for the ejection force accumulator to be designed as a torsion spring. The torsion spring must be arranged in the ejection device in such a way that in the locking position the line of action of this torsion spring runs through the axis of rotation. In order to ensure locking in a simple manner, it is preferably provided that the ejection device has a carrier, with the ejection force accumulator acting on the carrier on the one hand via a carrier-force storage base and on the other hand on the ejection element via an ejection-element-force storage base, the carrier-force storage base and the ejection element energy storage base lie in the locking position in a plane containing the axis of rotation of the ejection element and the line of action. As a result, it can be ensured in the simplest way, in a verifiable manner, that there is a secure locking position, in that the carrier energy storage base, the ejection element energy storage base and the axis of rotation are essentially in one line in a plan view.

It is preferably further provided that the ejection force accumulator is designed as a tension spring or as a compression spring. If the ejection force accumulator is designed as a tension spring, the axis of rotation is in the locking position exactly between the ejection element-force accumulator base and the carrier-force accumulator base. If, on the other hand, the ejection force accumulator is designed as a compression spring, then in the locking position the ejection element force storage base is located exactly between the axis of rotation and the carrier force storage base. Overall, the carrier (specifically its carrier energy store base), the ejection force store and the ejection element (specifically its ejection element force store base) form the locking device.

Protection is also sought for a piece of furniture with a furniture body, a movable furniture part and an ejection device according to the invention for the movable furniture part. The ejection device can be arranged either on the furniture body or on the movable furniture part. It is also possible that a retraction device, preferably a damped one, is additionally provided for retracting the movable furniture part from an open position into the closed position.

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 . This coupling counterpart 24 is also drawn in directly in the area of the ejection device 1 purely for the sake of illustration. 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 can Carrier 3 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 tensioning 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 engages on the one hand on the coupling lever 41 and on the other hand on the tensioning element 7 . 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 energy store base 32 (including the carrier 3), the ejection force store 5 and the ejection element 4 together form the locking device 17. The coupling device 26 is 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 ejector element 4 in the direction of rotation D—that is, counterclockwise—about 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 moves the movable furniture part 2 into a , 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 .

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 tensioning 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 by the opening path O (consists of ejection path A and clamping path S) in Opening direction OR moved. 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.

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 relative movement of the coupling and decoupling element 27 to the coupling piece 25 also stretches Coupling force accumulator 40, since this acts on the coupling piece 25 on the one hand and on the coupling and decoupling element 27 on the other hand.

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 store 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 which are spaced apart from one another are pressed towards 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 the 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 in turn connected in an articulated manner to the furniture body 22 via hinges 23 . 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 The clamping 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 . In addition, it can be seen that the carrier energy storage base 32 and the ejector element energy storage base 29 are in the illustrated locked position VS lie 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 is unlocked. (In the exemplary embodiments shown here, the ejection 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. This would keep the Line of action W with respect to beam 3 unchanged, but 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 area of the coupling piece 25 is no longer 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. But this is only a loose connection between the coupling piece 25 and Coupling counterpart 24 reached. 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 stopper 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 force accumulator 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, forms, together with the tensioning element 7, 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 bolt 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 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 the stop 45 of the coupling and decoupling element 27 comes into 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 clamping element 7 under the charge of the coupling force accumulator 40, whereby 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 region of the coupling piece 25, as a result of which it 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 If the movable furniture part 2 is also moved in the closing direction SR, then the movable furniture part 2 moves into the closed position SS.

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 (9)

Ejection device (1) for a movable furniture part (2), with - an ejection element (4) which can be rotated about an axis of rotation (X) for ejecting the movable furniture part (2) from a closed position (SS) into an open position (OS), - an ejection force accumulator (5) applying force to the ejection element (4) and - a locking device (17) for locking the ejection element (4) in a locking position (VS), characterized in that in the locked position (VS) the line of action (W) of the ejection force accumulator (5) runs through the axis of rotation (X). Ejection device according to Claim 1, characterized in that the locking device (17) can be unlocked by pushing the movable furniture part (2) into a pushing-over position (ÜS) behind the closed position (SS), in that the axis of rotation (X) and the line of action (W) get into a mutually spaced, relative unlocking position (ES). Ejection device according to Claim 2, characterized by a triggering device (35) which can be placed on the ejecting element (4), the ejecting element (4) being rotatable by the triggering device (35) when it is over-squeezed, as a result of which the line of action (W) and the axis of rotation (X) move into the reach relative unlocking position (ES). Ejection device according to claim 2 or 3, characterized in that starting from the relative unlocking position (ES), the ejection element (4) through the The ejection force accumulator (5) can be rotated about the axis of rotation (X), so that the ejection element (4), preferably indirectly via a clamping element (7), ejects the movable furniture part (2) in the opening direction (OS). Ejection device according to Claim 3 or 4, characterized in that the triggering device (35) in the locking position (VS) rests on the one hand on the ejection element (4) and on the other hand on the movable furniture part (2). Ejection device according to one of Claims 1 to 5, characterized in that the ejection device (1) has a carrier (3), the ejection force store (5) on the one hand via a carrier-force storage base (32) on the carrier (3) and on the other hand via an ejection element - The energy storage base (29) acts on the ejection element (4), the carrier energy storage base (32) and the ejection element energy storage base (29) in the locking position (VS) in one direction, the axis of rotation (X) of the ejection element (4) and the line of action ( W) containing level. Ejection device according to one of Claims 1 to 6, characterized in that the ejection force store (5) is designed as a tension spring or as a compression spring. Ejection device according to Claim 6 or 7, characterized in that the carrier-force storage base (32), the ejection-force storage device (5) and the ejection element (4) form the locking device (17). Furniture (21) with a furniture body (22), a movable furniture part (2) and an ejection device (1) according to one of Claims 1 to 8 for the movable furniture part (2).

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