Pop-up device

Abstract

The invention relates to an ejection device (1) for a movable furniture part (92, 105), comprising: an ejection element (3) for ejecting the movable furniture part (92, 105) from a closed position into an open starting position; a force accumulator (5) for pre-tensioning the ejection element (3) in the opening direction; a latching mechanism for latching the ejection element (3) in the closed position in the clamped state of the force accumulator (5); a clamping element (4), which can be moved from an open starting position in the opening direction under the action of the movable furniture part (92) in order to clamp the force accumulator, and an ejection element (3), which can be moved from the open starting position in the closing direction under the action of the movable furniture part (92, 105) in order to clamp the force accumulator (5), the latching mechanism comprises at least two curved guides (28), each having at least one latching receptacle (29), and is provided with a control element (10) having at least two bolts (11), each bolt (11) being lockable to one of the two latching receptacles (29). Therefore, the ejection device can reliably ensure the latch function even under the action of a high spring force.

Description

Technical Field

[0001] The present invention relates to an ejection device for a movable furniture component, which comprises an ejection element for ejecting the movable furniture component from a closed position to an open start position, an energy storage portion for applying a biasing force to the ejection element in an opening direction, a latch mechanism for locking the ejection element in a closed position in a tensioned state of the energy storage portion, and a tensioning element which can be moved from the open start position in an opening direction under the action of the movable furniture component to tension the energy storage portion, wherein the ejection element can be moved from the open start position in a closing direction under the action of the movable furniture component to tension the energy storage portion. Background Art

[0002] DE 20 2010 009 797 U1 discloses a device for moving a furniture part, wherein an energy storage part applies a force to the furniture part in an opening direction so that the furniture part can be moved from a closed position to a first open position. Starting from this first open position, a first loading control device can then control a loading mechanism for loading the energy storage part when the furniture part is moved in the opening direction so as to then move further in the opening direction after loading. A second loading control device is also provided, which loads the loading mechanism when the furniture part is moved in the closing direction. As a result, the furniture can be moved from the first open position in the opening direction and in the closing direction to be loaded. The lever mechanism for implementing the loading mechanism is relatively complex and there is also the problem that when the movable furniture part is moved in the opening direction, at the end of loading, when the loaded energy storage part is locked, the force suddenly drops. This is considered unpleasant by the operator.

[0003] DE 10 2015 106 781 A1 discloses an ejection device for a movable furniture part, which has a compact design and under the action of which the movable furniture part can be ejected from a closed position into an open position. An energy storage part of the ejection device can be locked in a tensioning position via a latch mechanism, wherein the energy storage part can be loaded via the movable furniture part during movement in the opening direction and in the closing direction. A problem here also lies in the fact that the force for loading the energy storage part increases and the force for tensioning the energy storage part drops quite suddenly when the furniture part is moved in the opening direction. Summary of the invention

[0004] The problem addressed by the invention is therefore to create an ejection device for a movable furniture part, in which the energy store can be reliably latched in the tensioning position under the action of the latching mechanism even with high spring forces and short switching paths.

[0005] This problem is solved by an ejection device having the features of claim 1 .

[0006] In the ejection device according to the invention, the latching mechanism comprises: at least two curved guides, each of which has a latch receptacle; and a control element with at least two latches, each of which can be locked into one of the two latch receptacles. Such curved guides are also called "heart-shaped guides". This "double locking" enables the insertion of an energy storage portion with high force, so that in particular heavy movable furniture parts can be moved under the action of the ejection device. This means that high spring forces can be used, especially in compact construction spaces, and the spring can be reliably locked in the tensioned position under the action of the latching mechanism. The energy storage portion can be tensioned under the action of the tensioning element or the ejection element, depending on whether the movable furniture part is moved from the open starting position in the opening direction or in the closing direction. Regardless of the direction of movement, the energy storage portion is tensioned and latched via the latching mechanism.

[0007] Preferably, each curved guide comprises an ascending ramp adjacent to the latch accommodation, and each latch can be moved against one of the ascending ramps, respectively, in order to unlock the control element. This allows a reliable unlocking of the latch mechanism by a short switching path, since the two latches can be unlocked simultaneously by moving against the two ascending ramps. This enables a compact design of the latch mechanism and reliable guidance of the control element. The control element can be held on the ejection element and can be moved together with the ejection element.

[0008] The tensioning element and the ejection element of the ejection device can be guided along a straight line on the housing. Both can preferably move in opposite directions.

[0009] In another embodiment, a resilient web with a guide element is provided on the control element, which guide element can engage with a protrusion on the curved guide and is used to displace the control element along the curved guide. The control element can be reliably moved into the locked position under the action of the guide element and the protrusion, regardless of whether the ejection element is responsible for tensioning the energy storage part or the tensioning element is responsible for tensioning the energy storage part. The control element can be moved to the corresponding latched position using a latch via a short switching path.

[0010] In another embodiment, the tensioning element is connected to a transmission device, by which the force used to tension the energy storage portion can be varied with the stroke. Thus, depending on whether the tensioning element or the ejection element is used to tension the energy storage portion, the transmission device can be used to vary the force used to tension the energy storage portion. This means that a sudden release of the force when latching or locking the energy storage portion in the tensioning position can be practically avoided, in particular if the tensioning is performed by the tensioning element.

[0011] The transmission device preferably includes a rotating part, which is connected to the tensioning element and the ejection element, and the tensioning element and the ejection element can move in opposite directions under the action of the rotating part. The rotating part may include a gear or a friction wheel, and may be formed eccentrically at least in some areas to achieve flexible transmission. Preferably, the rotating part includes two helical gears, a first gear of which engages with a rack on the ejection element and a second gear of which engages with a rack on the tensioning element. When the rotating part moves, the ejection element and the tensioning element thus move in opposite directions via the engagement of these racks. Friction wheels and other force transmission devices can also be used instead of forming racks and gears. The rotating part can also be formed integrally so that the two gears are integral with each other.

[0012] Preferably, the swivel is rotatably mounted on a pivotable lever. This allows the axis of rotation of the swivel to pivot via the pivotable lever when the ejection element and the tensioning element are moved. As a result, the distance between the axis of rotation of the swivel and the racks can be changed, thereby changing the transmission ratio. The distance between the racks can remain constant, so that the helical gears are also designed so that the junction points on the two gears have the same distance in each case. Instead of a pivotable lever, a guide for displacing the swivel can also be provided.

[0013] In another embodiment, the ejection element is connected to the rack via a rocker. The rocker can be rotated or pivoted on the ejection element. This enables relative movement between the rack and the ejection element, at least in the locked position. The rocker can include a control element that can engage with a guide on the housing of the ejection device so that the position of the rocker depends on the position of the ejection element in the housing. The rocker can then be rotated relative to the ejection element by moving the ejection element, thereby providing reliable positive guidance.

[0014] The ejection element is preferably formed from several parts and comprises a toothed rack which is displaceable relative to the ejection element between two end positions. The toothed rack of the ejection element may also comprise a contact surface under the action of which the control element of the latching mechanism can be moved into the latching receptacle. This allows the control element to be placed in a guided manner in the latching receptacle, which largely avoids return movements when latching to the latching receptacle and can therefore be performed quietly.

[0015] Optionally, in order to avoid loud impact noises, a damper may be provided, in particular a linear damper, by which the movement of the ejection element in the opening direction may be braked before reaching the opening start position.

[0016] Brief description of the attached figure

[0017] The present invention will be explained in more detail below with reference to the accompanying drawings. The accompanying drawings show:

[0018] Figure 1 is a perspective view of an ejection device according to the present invention;

[0019] Figure 2A and 2B yes Figure 1 Two exploded views of the ejection device;

[0020] Figure 3 is an exploded view of the ejection device of FIG. 2 during assembly;

[0021] Figure 4A is a cross-sectional view of the ejection device of the movable furniture component when the movable furniture component is in a closed position;

[0022] Figure 4B is a cross-sectional view of the pop-up device in an open start position;

[0023] FIG. 5A to FIG. 5D are several cross-sectional views of the ejection device during tensioning of the energy storage portion by the tensioning element;

[0024] Fig. 6A and Figure 6B are two detailed views of the bending guide with arrows to explain the tensioning path of the control element;

[0025] Figure 7 is a detailed view of the exposed curved guides and control elements;

[0026] FIG. 8A to FIG. 8C are several cross-sectional views of the ejection device when the control element is moved to the latched position;

[0027] 9A to 9D are several views of the open housing of the ejection device in different positions to demonstrate the function of the rocker;

[0028] Fig.10 are several exemplary diagrams illustrating the tensioning and ejection process of the ejection device;

[0029] Fig.11 is an exploded view of a piece of furniture having a pop-up device according to the present invention;

[0030] Fig.12 yes Fig.11 A perspective view of a drawer of a piece of furniture with an installed pop-up device;

[0031] Fig.13 is an exploded view of another piece of furniture having a pop-up device according to the present invention; and

[0032] Fig.14 yes Fig.13 Detailed view of the furniture in the. DETAILED DESCRIPTION

[0033] The ejection device 1 comprises a housing 2, on which an ejection element 3 is displaceably mounted for ejecting a movable furniture part. In addition, a tensioning element 4 is provided, which is arranged at a distance from the ejection element 3 so that an actuating portion 94 can be inserted between the ejection element 3 and the tensioning element 4. The ejection device 1 can be used to eject a movable furniture part, such as a drawer, door, flap, sliding door, revolving furniture or other movable furniture part, from a closed position.

[0034] Figure 2A and Figure 2B An exploded view of the ejection device 1 is shown. The housing 2 comprises a first housing part 20 and a second housing part 21. A guide 22 for guiding the tensioning element 4 is provided on the second housing part 21, the tensioning element 4 being engaged in the guide 22 via a guide strip 41. A further guide 22 can be formed on the first housing part 20 in parallel with the guide 22 on the second housing part 21. A guide rail 23 is provided adjacent to the guide 22, which comprises a receiving portion 24 with an ascending slope for moving a drive 45 on the tensioning element 4. The drive 45 is penetrated by a pin 44 at an opening 46, which can be displaced along a slot 43 on the body 40 of the tensioning element 4. An integrally formed elastic web 47 is provided on the drive 45, which biases the drive 45 in an initial position, wherein the drive 45 is rotatably mounted relative to the body 40 via the pin 44.

[0035] The tensioning element 4 further comprises a toothed rack 42 which can be connected to the rotating part 6. The rotating part 6 is rotatable about an axis 60 and comprises two helical gears 61 and 62, the gear 61 being engaged with the toothed rack 42 in the mounted position.

[0036] The swivel part 6 is pivotably held on the lever 7, so that the lever 7 is rotatably mounted via an axle 70 with a pin, which engages in the openings 25 on the housing parts 20 and 21. The lever 7 comprises two webs 71, at the ends of which bearing receptacles 72 are formed, in which the axle 60 of the swivel part 6 engages. The axle 60 is also guided on the elongated holes 26 of the housing parts 20 and 21.

[0037] The ejection device 1 comprises an energy storage part 5 to apply a biasing force to the ejection element 3 in the opening direction. The energy storage part 5 designed as a spring is fixed to a spring retainer 52 by a first end 50, and the spring retainer 52 comprises a web 53, which can be inserted into a slot 27 on the housing part 21. A plurality of slots 27 are arranged at a certain distance from each other, so that the spring tension of the energy storage part 5 is adjustable. Alternatively, the adjustment of the spring tension of the energy storage part can be achieved by other means, for example, it can be achieved steplessly by an adjusting screw or a worm gear.

[0038] The opposite second end 51 of the energy storage portion 5 is fixed to the holder 31 of the ejection element 3. The ejection element 3 is held so that it can move in a straight line in the housing 2 by means of a guide web or other guide means. A receiving portion 32 is formed on the bar-shaped body 30 of the ejection element 3, into which the holder 36 on the rack 35 is inserted. The holder 36 is U-shaped and is also used to receive the protrusion 37 on the rocking member 38. The rocking member 38 is rotatably mounted on the receiving portion 32 of the ejection element 3 and includes a rib-shaped guide element 54. Since the holder 36 is displaceably mounted in the receiving portion 32, the rack 35 can be moved within a certain range relative to the ejection element 3. Through the rotational movement of the rocking member 38, the rack 35 can therefore be adjusted in one direction under the action of the protrusion 37 in the holder 36, or the rocking member 38 can be rotated in the opposite direction by the pushing movement of the rack 35.

[0039] The ejection element 3 further comprises a pressure element 33 which can be connected to a damper 8 for braking the ejection element 3. The damper 8 is formed as a linear damper and comprises a damper housing 80 and a piston rod 81 which is movable relative to the damper housing 80. The damper 8 can be formed as a fluid damper, but other damping elements can also be used. As an alternative to the damper 8 with the damper housing 80 and the piston rod 81, a rotation damper made of at least partially elastic plastic or only a stop damper made of at least partially elastic plastic can also be provided on the ejection element 3 and / or on the housing 2.

[0040] A curved guide 28 with two so-called heart-shaped curves is formed on the housing part 21 in order to be able to lock the control element 10 of the ejection element 3 in position in the tensioned state of the energy storage device 5. Each heart-shaped curve comprises an annular guide with a latch receptacle 29 for the control element 10. The control element 10 comprises two guide elements in the form of pins as latches 11, each latch 11 engaging in a heart-shaped curve of the curved guide 28. The control element 10 is displaceably guided on the ejection element 3, in particular perpendicularly to the direction of action of the energy storage device 5.

[0041] exist Figure 4A , the ejection device 1 is shown in the closed position, the term "closed position" referring to the position of a movable furniture part, for example the closed setting of a door or the closed position of a drawer. In the closed position, the energy storage part 5 is in a tensioned position and is locked via a latching mechanism. The latching mechanism comprises a control element 10, which is latched to a latch receiving portion 29 of a curved guide 28 in each case by two latches 11. In order to unlock the latching mechanism, the ejection element 3 can now be moved further in the closing direction, for example a drawer can be moved from the closed position to a push-through position, or a door can be pushed in slightly towards the furniture body in order to unlock the latching mechanism. Thus, the movable furniture part can cause the plunger 34 on the ejection element 3 to move slightly in the closing direction, so that the latch 11 of the control element moves against the rising ramp 58, so that the latch 11 and the control element 10 are removed from the latch receiving portion 29 and displaced laterally in order to unlock the control element 10. This unlocking leads to the release of the force of the energy storage part 5, which after unlocking pulls the ejection element 3 into the open starting position, as shown in FIG. Figure 4B In this opening starting position, the movable furniture part is, for example, at a distance of between 3 cm and 10 cm from the closed position, so that the movable furniture part (such as a drawer or a door) can be grasped by hand in order to be moved further in the opening direction or moved back in the closing direction. The movement from the closed position to the opening starting position also causes the operating lever 7 to rotate.

[0042] FIG. 5A to FIG. 5D The ejection device 1 is shown Figure 4B The tensioning process starts from the open starting position shown. As the manual opening movement proceeds, the actuating part 94 connected to the movable or fixed furniture part presses the drive part 45 in the opening direction according to the arrow, and the force is transmitted from the drive part 45 to the tensioning element 4, which in turn is connected via the rack 42 to the rotating part 6 with gears 61 and 62, which also engages with the rack 35 on the ejection element 3, and the energy storage part 5 engages on the ejection element 3. The tensioning element 4 and the ejection element 3 move in opposite directions via the rotating part 6. During the resulting movement of the ejection element 3 in the closing direction, the control element 10 displaceably mounted on the ejection element 3 moves along the curved guide 28 together with the latch 11. During the further movement of the ejection element 3 in the closing direction, the latch 11 moves along an inclined path, thereby ensuring the displacement of the control element 10 relative to the ejection element 3, as shown in FIG. Figure 5B shown.

[0043] exist Figure 5C In the embodiment, the control element 10 with the latch 11 is located just in front of the latch receiving portion 29. Due to the advancement of the rack 35 relative to the ejection element 3 caused by the movable bearing in the ejection element 3, the contact surface 39 on the rack 35 contacts the control element 10 and Figure 5CThe control element 10 is pressed to the left against the action of the energy storage part 5 and also in the direction of the latch receiving part 29. If the rack 35 moves further in the closing direction, the contact surface 39 presses the control element 10 with the latch 11 into the latch receiving part 29 and the ejection device 1 is in the closed position. Figure 5D The locked closed position is shown, in which the energy storage portion 5 is tensioned.

[0044] Since the actuating portion 94 moves in the opening direction first, the drive portion 45 reaches the rising slope of the receiving portion 24 of the guide rail 23, so that the drive portion 45 moves along the slot 43 on the main body 40 through the pin 44, so that the drive portion 45 moves out of engagement with the actuating portion 94. In this position, the energy storage portion 5 is locked in the tensioning position by the latch mechanism. The actuating portion 94 can now move over the drive portion 45 and is free to travel, so that the door or drawer or other movable furniture parts can be moved without affecting the ejection device 1.

[0045] If such a failure occurs: the drive portion 45 is arranged in the section of the guide rail 23 so that the drive portion 45 protrudes from the housing 2, the actuating portion 94 from the opening direction can pass over the drive portion 45 without damaging the drive portion 45. The drive portion 45 is rotatably mounted on the slot 43 of the tensioning element 4 via the pin 44 and is preloaded to an initial position by the elastic web 47. The drive portion 45 can be rotated against the force of the elastic web 47 so that the actuating portion 94 passes over the drive portion 45 in the closing direction, and then after passing over, the drive portion 45 is rotated back on the elastic web 47 and can be used for the next tensioning process.

[0046] Alternatively, a tensioning process for the energy storage part 5 can also be achieved if the movable furniture part is not moved in the opening direction but is moved backwards in the closing direction. When the actuating part 94 presses on the plunger 34 of the ejection element 3, the plunger 34 of the ejection element 3 moves in the closing direction against the force of the energy storage part 5, so that the control element 10 with the latch 11 which is displaceably mounted on the ejection element 3 also moves along the curved guide 28. Upon further movement of the ejection element 3 in the closing direction, the latch 11 moves along an inclined path, thereby ensuring that the control element 10 is displaced relative to the ejection element 3, as shown in FIG. Fig. 8A shown.

[0047] Fig. 6A and Figure 6B Each shows the tensioning process of a control element 10 having two latches 11, each of which can be moved in a curved guide 28, the movement of the latches being Fig. 6A and Figure 6B When the energy storage unit 5 is tensioned, the latch 11 in FIG. 6 moves from right to left, as indicated by the arrow. Fig. 6AAs shown, the tensioning process can take place when the piece of furniture is pushed closed in the closing direction, in which case the latch 11 moves against the rising ramp 55 on the curved guide 28 so as to move the control element 10 perpendicularly to the tensioning direction of the energy storage part 5. The latches 11 then each move into the receiving channel 56 of the curved guide 28 and then return to the latch receiving part 29. In order to ensure reliable latching, the control element 10 moves perpendicularly to the tensioning direction of the energy storage part 5 during the movement back to the latch receiving part 29, as shown by the arrow.

[0048] Alternatively, the tensioning of the energy storage portion 5 can also be performed by moving the tensioning element 4 in the opening direction, such as Figure 6B As shown, the latch 11 of the control element 10 is then moved according to the arrow from the curved guide 28 directly to the latch receptacle 29, whereby the inclined contact surface 39 on the ejection element 3 is used for this purpose in order to move the control element 10 onto the latch receptacle 29 perpendicularly to the direction of action of the energy storage 5. When the closed position is reached, the latch 11 is located in the receiving channel at the height of the latch receptacle 29. When the actuation 94 is unloaded, the ejection element 3 with the control element 10 is pulled in the opening direction by the force of the energy storage 5 and the latch 11 is placed in the latch receptacle 29.

[0049] In order to move the control element 10 from the receiving channel 56 perpendicularly to the direction of action of the energy store 5, a step can be provided, for example, on the curved guide 28. For unlocking, the latch 11 is moved against the rising ramp 58 against the force of the energy store.

[0050] Figure 7 The curved guides 28 and the control element 10 are shown in detail. Each curved guide 28 comprises a latch receptacle 29, whereby a projection 59 is formed between the two latch receptacles 29. The projection 59 interacts with a guide element 14 on the elastic web 13 of the control element 10. The guide element 14 is arranged between the two latches 11, in the immediate vicinity of the guide strip 15. When the guide element 14 moves against the projection 59 due to the displacement of the latch 11 from the receiving channel 56 to the latch receptacle 29 by the force of the energy storage 5, the inclined structure of the contact surface on the projection 59 ensures that the control element 10 is displaced perpendicularly to the direction of action of the energy storage 5 and that the control element 10 with the latch 11 is positioned on the two latch receptacles 29. If, on the other hand, the energy storage part 5 is not tensioned by a movement in the closing direction, but rather by a movement in the opening direction, so that the tensioning element 4 moves over the movable furniture part, the guide element 14 can move over the rising slope on the protrusion 59, so that the latch 11 can be latched onto the latch receptacle 29.

[0051] exist Fig. 8A, the ejection device 1 is shown in such a position that the two latches 11 on the control element are each arranged in a receiving channel 56. The tensioning of the energy storage 5 is thus achieved by the ejection element 3 and its movement in the closing direction. The energy storage 5 causes the control element with the latches 11 to be displaced in the direction of the latch receptacle 29, as Figure 8B In this position, the guide element 14 engages the protrusion 59, which is perpendicular to the direction of action of the energy storage part 5 (i.e. Figure 8B The control element 10 is guided upwardly in the Figure 8C , the latched position is shown. The two latches 11 are now each latched to the latch receptacle 29 of the curved guide 28. Even if the energy storage 5 exerts a high spring force on the control element 10, the projection 59 and the guide element 14 reliably prevent separation.

[0052] 9A to 9D The function of the rocker 38 of the ejection device 1 is shown. The rocker 38 with the projection 37 in the holder 36 is in the initial position, whereby the rib-shaped guide element 54 abuts against the guide 18 of the housing 2 and prevents a rotational movement of the rocker 38. Starting from this initial position, the control element 10 can now be tensioned by the ejection element 3 or the tensioning element 4. Fig. 9B The end of the tensioning process is shown, so that the control element 10 with the latch 11 has not yet latched into the latching receptacle 29. The energy store 5 presses the ejection element 3 against the force of the movable furniture part, which performs the latching at the end of the tensioning process.

[0053] Fig. 9C The latched position of the latch mechanism is shown. The control element 10 with the latch 11 is held on the latch receptacle 29 and the rocker 38 has been rotated relative to the starting position, the projection 37 still being arranged in the holder 36. By pivoting the rocker 38, a relative movement occurs between the rack 35 and the ejection element 3.

[0054] If the control element 10 with the latch 11 is now unlocked from the latched position, the energy storage 5 pulls the ejection element 3 back to the starting position, whereby the rocker 38 engages with the guide 18 on the housing 2 via the guide element 54 so that the rocker 38 rotates back again.

[0055] Fig.10The function of the transmission of the present embodiment example is shown in diagram form. In both diagrams, the center line represents the open starting position of the ejection device 1. From this position, the ejection device can now be tensioned by the movement of the ejection element 3 in the closing direction or by the movement of the tensioning element 4 in the opening direction. The upper diagram shows that the transmission ratio is 1:1 when the energy storage part 5 is tensioned by the movement in the closing direction, because the transmission is not active. Moving the ejection element 3 in the closing direction leads to the tensioning of the energy storage part 5. On the other hand, if the actuating part 94 is moved in the opening direction, the variable transmission ratio on the rotating part 6 ensures different force / displacement ratios, which start from a transmission ratio of almost 1:1. Shortly before reaching the tensioning position, the transmission ratio generated by the helical gear 61 and the helical gear 62 is about 1:2.7. Depending on the application and the available construction space, other designs of the gears 61 and 62 and / or other transmission ratios can also be realized.

[0056] The following diagram shows the force of the energy storage portion for this design example as a function of the corresponding position of the ejection element 3. When the energy storage portion 5 is tensioned by moving the ejection element 3 in the closing direction, the force increases substantially linearly until the closed position is reached. Without a transmission, the force would also increase linearly when moving in the opening direction via the tensioning element 4 and tensioning the energy storage portion. However, the transmission causes the force for tensioning the energy storage portion 5 to drop as the transmission ratio changes with the stroke. Due to the change in the transmission ratio, the force required to tension the energy storage portion 5 decreases with a greater distance from the opening starting position. This reduces the effect of the force disconnection when the tensioning energy storage portion locked to the latch mechanism reaches the end position.

[0057] Fig.11 An example of application of an ejection device 1 is shown, which is fixed to a movable furniture part 92 in the shape of a drawer. The movable furniture part 92 is held on two pull-out guides 93 on a furniture body 91 of a piece of furniture 90. The ejection device 1 is fixed to the movable drawer and is connected via an actuation part 94, which is fixed to the furniture body 91.

[0058] Fig.12 Two ejection devices 1 are shown fixed to the bottom side of the drawer and engage with a fixedly arranged actuating portion 94, so that the movable furniture part 92 formed as a drawer can be ejected from the closed position to the open starting position after unlocking. Of course, the actuating portion 94 can also be arranged on the drawer and the ejection device 1 can be fixedly arranged on the furniture body 91. The actuating portion 94 can also be formed as an element of another functional component. In addition, in addition to being used with drawers, the ejection device 1 can also be used with other movable furniture parts 92, such as sliding doors, hinged doors, baffles or other movable furniture parts.

[0059] Fig.13 A further piece of furniture 100 is shown having a furniture carcass 101 comprising an upper plate 102, a base 103 and a cabinet element 104. A movable furniture part 105 in the form of a shelf is arranged between the base 103 and the upper plate 102, which movable furniture part 105 is movable relative to the furniture carcass 101 and can be locked in at least one end position, preferably two end positions.

[0060] The movable furniture part 105 is arranged on a guide element 106 which has a guide rail 107 ( Fig.14 ), the guide rail 107 being arranged on a support element 108. Two ejection devices 1 are fixed to the support element 108, which can engage with two actuating portions 94 on the guide element 106. The ejection device 1 can be used to lock a movable furniture part 105 to a base 103. The guide element 106 with the guide rail 107 can be formed as disclosed, for example, in DE 10 201 9 109 866.

[0061] List of Reference Numerals

[0062] 1 Pop-up device

[0063] 2 Housing

[0064] 3 Pop-up components

[0065] 4 tensioning elements

[0066] 5 Energy storage unit

[0067] 6 Rotating part

[0068] 7 Leverage

[0069] 8 Damper

[0070] 10 Control elements

[0071] 11 Latch

[0072] 13 Elastic web

[0073] 14 Guide element

[0074] 15 Guide Strip

[0075] 18 Guide

[0076] 20 Shell part

[0077] 21 Shell part

[0078] 22 Guide

[0079] 23 Guide Rail

[0080] 24 Accommodation

[0081] 25 Opening

[0082] 26 Long hole

[0083] 27 Slot

[0084] 28 Curved guide rail

[0085] 29 Latch receiving portion

[0086] 30 Strip-shaped body

[0087] 31 Retainer

[0088] 32 Accommodation

[0089] 33 Pressure element

[0090] 34 Plunger

[0091] 35 Rack

[0092] 36 Retainer

[0093] 37 protrusion

[0094] 38 Swinging piece

[0095] 39 Contact Surface

[0096] 40 Body

[0097] 41 Guide Strip

[0098] 42 Rack

[0099] 43 Slot

[0100] 44 Pins

[0101] 45. Drive unit

[0102] 46 Opening

[0103] 47 Elastic web

[0104] 50 end

[0105] 51 end

[0106] 52 Spring retainer

[0107] 53 belly plate

[0108] 54 Guide element

[0109] 55 Rising Slope

[0110] 56 receiving channels

[0111] 58 Rising Slope

[0112] 59 protrusion

[0113] 60 Axis

[0114] 61 Gear

[0115] 62 Gear

[0116] 70 Axis

[0117] 71 belly plate

[0118] 72 bearing accommodation portion

[0119] 80 Damper housing

[0120] 81 Piston rod

[0121] 90 Furniture

[0122] 91 furniture body

[0123] 92 Movable furniture parts

[0124] 93 Pull out the guide

[0125] 94 Actuator

[0126] 100 Furniture

[0127] 101 Furniture body

[0128] 102 board

[0129] 103 Base

[0130] 104 Cabinet Elements

[0131] 105 Movable furniture parts

[0132] 106 Guide element

[0133] 107 Guide Rail

[0134] 108 Support element

Claims

1. An ejection device (1) for a movable furniture part (92, 105), comprising: a) an ejection element (3) for ejecting the movable furniture part (92, 105) from a closed position into an open starting position; b) an energy storage portion (5), the energy storage portion being used to apply a biasing force to the ejection element (3, 3') in an opening direction; c) a latch mechanism for latching the ejection element (3) in the closed position when the energy storage portion (5) is in a tensioned state; d) a tensioning element (4), which can be moved from the opening starting position in the opening direction under the action of the movable furniture part (92) to tension the energy storage part, wherein e) the ejection element (3) can be moved from the open starting position in the closing direction under the action of the movable furniture part (92, 105) to tension the energy storage part (5), It is characterized in that The latch mechanism comprises at least two curved guides (28) each having at least one latch receptacle (29), and is provided with a control element (10) having at least two latches (11), wherein each latch (11) can be locked into one of the two latch receptacles (29).

2. The ejection device according to claim 1, characterized in that: Each curved guide (28) comprises an ascending ramp (58) adjacent to the latch housing (29), and each latch (11) is movable against one of the ascending ramps (58) respectively in order to unlock the control element (10).

3. The ejection device according to claim 1 or 2, characterized in that: The control element (10) is held on the ejection element (3) and is movable together with the ejection element.

4. The ejection device according to any one of the preceding claims, characterized in that The tensioning element (4) and the ejection element (3) are guided along a straight line on the housing (2).

5. The ejection device according to any one of the preceding claims, characterized in that A resilient web (13) having a guide element (14) is provided on the control element (10), the guide element being engageable with a protrusion (59) on the curved guide (28) for moving the control element (10) along the curved guide (28).

6. An ejection device according to any one of the preceding claims, characterized in that The tensioning element (4) is connected to a transmission, by means of which the force used to tension the energy storage portion (5) can be varied as a function of the stroke.

7. The ejection device according to claim 6, characterized in that: The transmission device comprises a rotating part (6), which is connected to the tensioning element (4) and the ejecting element (3), and the tensioning element (4) and the ejecting element (3) can move in opposite directions under the action of the rotating part (6).

8. The ejection device according to claim 6 or 7, characterized in that: The rotating part (6) includes two helical gears (61, 62), wherein the first gear (62) is engaged with the rack (35) on the ejection element (3), wherein the second gear (61) is engaged with the rack (42) on the tensioning element (4), and the rotating part (6) is rotatably mounted on a pivotable lever (7).

9. An ejection device according to any one of the preceding claims, characterized in that The ejection element (3) is connected to the rack (35) via a rocker (38).

10. The ejection device according to claim 9, characterized in that: The rocker (38) is rotatably held on the ejection element (3).

11. The ejection device according to claim 9 or 10, characterized in that: The rocker (38) comprises a guide element (54) which is engageable with a guide element (18) on the housing (2) of the ejection device (1).

12. An ejection device according to any one of the preceding claims, characterized in that The toothed rack (35) is held on the ejection element (3) so as to be movable relative to the ejection element (3).

13. An ejection device according to any one of the preceding claims, characterized in that A contact surface (39) is formed on the rack (35) of the ejection element (3), and the control element (10) of the latch mechanism can be moved into the latch receiving portion (29) on the curved guide (28) under the action of the contact surface (39).

14. An ejection device according to any one of the preceding claims, characterised in that A damper (8) is provided, by means of which the movement of the ejection element (3) in the opening direction can be braked before the ejection element (3) reaches the opening starting position.

15. A piece of furniture (90, 100) comprising a movable furniture part (92, 105) which can be moved by means of a pop-up device (1) according to any one of the preceding claims.

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