EP2256271B1 - Item of furniture - Google Patents

Abstract

A device moves the ejection component (5) out through the first open position. The drive unit is a force storage device, preferably a tension spring which is manually-loaded. The device causing the movement is arranged on the moving furniture part (3) and is directly or indirectly coupled. The device comprises components fitted to both the moving furniture part and the ejection component (5). Both parts are so constructed and arranged, that they exert a magnetic pull on each other. An independent claim is included for the corresponding method of opening and closure.

Description

The invention relates to a piece of furniture with a movable furniture part and an ejection device, which has at least one ejection element for moving the movable furniture part from a closed position to a first open position and at least one drive device with a preferably stored energy storage for the at least one ejection element. Furthermore, a method for opening or closing the novel furniture should be specified

Such furniture is already known, with generic ejection devices being referred to as so-called "touch-latch" mechanisms. In this case, by applying a pressure (touch), for example on the movable furniture part, a switch, a button or the like, the drive device unlocks (latch), whereby the movable furniture part is moved by means of the ejection element from its closed position into a first open position. If the drive device is formed by a force accumulator to be charged manually, the energy accumulator is usually charged when the furniture is closed. As unsatisfactory in this prior art, it has been found that the user for loading the energy storage only the closed position immediately upstream part of the closing path is available.

Such a furniture part is for example from the DE 1 778 452 known. Therein, two thrust levers are provided, which eject a drawer by a relaxing tension member. For loading the tension member is the same, the closed position immediately upstream route as the unloading path (ejection route) necessary. That is, the loading movement of the tension member takes place when closing until reaching the closed position.

The invention has therefore set itself the task of providing an improved furniture of the type in question, with which the known from the prior art disadvantages can be avoided. This is intended to specify a method for opening or closing the novel piece of furniture. In particular, a low-noise and uniform closing of the movable furniture part is to be achieved

The invention solves this problem in that the ejection element is movable independently of the energy store when moving in the opening direction from the first open position to an open end position that the ejection device for at least partially loading the energy storage device of the drive device for the ejection element during a closing movement of the movable furniture part in a formed between the open end position and the first open position lying portion of the opening or closing path of the movable furniture part, wherein a silent and uniform closing of the movable furniture is achieved when the ejection device for starting the Charging process of the energy storage device substantially at each closing movement of the movable furniture part, preferably independent of the position of the movable furniture part is formed.

If in this case the ejection element rotatably mounted, it may further be provided that the opening angle of the ejection element after completion of the ejection process in the first open position of the movable furniture part on the one hand and at the beginning of the charging process of the energy accumulator on the other hand or the distance between the shock point of the ejection element in the starting position and the impact point after completion of the ejection process on the one hand and the distance between the impact point of the ejection element in the starting position and the shock point at the beginning of the charging process of the energy storage on the other hand are different.

According to a preferred embodiment of the invention, the ejection device comprises a rotatably mounted ejection element and a lockable drive device, preferably a helical tension spring, which are operatively connected to each other via a transmission, preferably a gear transmission. In a simple manner, for this purpose, the ejection element can be connected to the drive device via a coupling element and have a gear-shaped section, which is designed to engage with a drive pinion, which is mounted in a rotatably mounted bearing element. A space-saving solution results when at least the ejection element, the bearing element for the drive pinion and the coupling element are arranged coaxially.

The locking of the drive device, for example, by means of a pawl or guided in an example heart-shaped slide track driver or, as provided according to a further embodiment of the invention, via a toggle and / or a dead center.

The necessary between the drive pinion and the coupling element freewheel for moving the ejection element on the first open position addition is realized according to a further embodiment of the invention by the first link of the toggle lever is pivotally connected at its free end to the coupling element and the dead center mechanism has a lever, at one end pivotally connected to the knee of the toggle lever and pivotally connected at the other end with an arcuate coupling element, wherein the arcuate coupling element is rotatably mounted, preferably coaxially with the coupling element.

To load the energy accumulator, it is necessary to cancel the freewheel between the coupling element and the pinion to allow transmission of the force acting on the ejection element to the coupling element. According to one embodiment of the invention, this is achieved by the drive pinion rotatably connected to a coaxially arranged, preferably disc-shaped brake element, wherein the brake element is circumferentially formed for engagement with the arcuate coupling element. That is, immediately after or at the beginning of the closing operation of the movable furniture part, the brake element is circumferentially engaged with the arcuate coupling element, so that the rotational movement of the pinion is blocked and the force acting on the ejection element of the closing movable furniture part on the coupling element, means the power storage is loaded, is transmitted.

A simple assembly of the ejection device results according to a preferred embodiment when the ejection device is arranged in a housing with an outlet opening at least for the ejection element. The housing can then be mounted in a simple manner at a suitable location either on the movable furniture part or on the furniture body.

To ensure that the movable furniture part after completion of the ejection process substantially always the same first open position reached, it is necessary to define the opening angle of the ejection element in the first open position, which is achieved according to a preferred embodiment in that in the housing at least one stop element for the Bearing element of the drive pinion is arranged, wherein the bearing element rests in the first open position of the movable furniture part on the stop element.

A further exemplary embodiment of the invention provides that the means for moving the ejection element beyond the first open position are formed by a preferably bow-shaped bending spring, whose first leg is on the ejection element and the second leg engages the coupling element. In this case, the movable furniture part must be held against the force of the preferably bow-shaped spiral spring in its closed end position, which can be done for example via a collection device or a hinge.

According to another embodiment, it is provided that the means for moving the ejection element beyond the first open position are formed by a spiral spring whose first leg engages the ejection element and its second leg, preferably rotatable and stationary, on the housing. With an appropriate arrangement of the spiral spring, a kind of snap mechanism can be realized, so that the bending or torsion spring locks the ejection element in the starting position, but snaps when unlocking the force accumulator and acts on the ejection element in the opening direction of the movable furniture part.

According to a further embodiment of the invention, the ejection device for unlocking the drive device further comprises a trigger mechanism with a triggering element. A preferred embodiment provides in this case that the trigger mechanism is designed for play-free application of the trigger element to the movable furniture part or the furniture body in the closed position of the movable furniture part, whereby an exact determination of the triggering path is possible.

Furthermore, a method for opening or closing a furniture part movably mounted in or on a furniture body of a piece of furniture is to be indicated by means of an ejection device which has an ejection element acted upon or acted upon by a lockable drive device, preferably a force accumulator to be manually loaded, wherein the force accumulator during the closing movement of the movable furniture part is charged by means of the ejection element, which is characterized according to the invention in that the charging of the energy storage after opening the movable furniture part beyond a first open position during a closing movement of the movable furniture part in a between the first open position and the opened end position lying portion of the opening or closing path of the movable furniture part is started.

In contrast to the prior art, therefore, the charging process of the energy storage is already started at the beginning of the closing movement of the movable furniture part, wherein also according to the invention, the charging process of the energy storage substantially at each closing movement of the movable furniture part, preferably independently of the respective open position of the movable furniture part is started , In other words, the loading of the force accumulator takes place according to the ratchet principle, i. the ejection element is freely movable after completion of the ejection operation with respect to the energy accumulator during the further opening stroke, while in the opposite direction the force accumulator permanently, i. acted upon in every position.

An embodiment may provide that means are provided for moving the at least one ejection element beyond the first open position. In drive devices, which are formed by a preferably manually loaded energy storage device, preferably a tension spring, is charged to load the energy accumulator acted upon by the energy storage ejector element over a portion of the closing path either with the movable furniture part or the furniture body, depending on whether the ejection device on Furniture carcass or is arranged on the movable furniture part coupled. In the previously known generic ejection devices, this coupling takes place substantially in the lying between the closed end position and the first open position of the movable furniture part of the opening or closing path of the movable furniture, wherein the first open position of the movable furniture part of the position of the ejection element after completion of the Ejecting process corresponds. This means that the user can apparently move the movable furniture part when closing it until it reaches the first open position before it then has to apply the force for loading the energy storage device in the last section of the closing path.

By contrast, the furniture according to the invention in that the ejection element is moved beyond the first open position of the furniture part after completion of the ejection process, the portion of the closing path in which the ejection element for loading the energy storage device with the movable furniture part or the furniture body is coupled, laid in the direction of the open end position. This means that the user immediately after or simultaneously with the beginning of the closing movement of the movable furniture part begins to load the power storage of the drive device and after completion of the charging only a small force must apply to move the movable furniture parts in its closed end position. This gives the user the impression of an overall more uniform closing movement of the movable furniture part.

According to a first exemplary embodiment of the invention, the means for directly or indirectly coupled or coupleable means for moving the at least one ejection element beyond the first open position are arranged on the movable furniture part, wherein it is irrelevant whether the movable furniture part depends on a door, a flap or a drawer is formed.

A simple design solution provides that the means comprise at least a first on the movable furniture part and at least a second arranged in or on the ejection member, wherein the two parts are formed and arranged so that they exert on each other a magnetic attraction. Of course, other solutions are conceivable. Thus, for example, the first part of the means could be formed by a rod arranged pivotably on the movable furniture part, and the second part of the means could be arranged, for example in the form of a longitudinal guide, directly on the ejection element.

According to another embodiment of the invention, the means for directly or indirectly coupling or coupling means for moving the at least one ejection element beyond the first open position are arranged on the furniture body and / or in or on the ejection device, wherein a preferred embodiment of the invention provides the ejection device has, in addition to the drive device, at least one additional auxiliary drive which forms the means for moving the ejection element when the movable furniture part is opened beyond the first open position.

A structurally simple and yet stable solution results when the auxiliary drive is formed by a preferably manually to be loaded energy storage, preferably a compression spring.

Although it would also be conceivable to make the movement of the ejection element beyond the first open position completely independent of the movement of the movable furniture part, a technically simple solution is achieved if the at least one ejection element of the ejection device in at least one between the first open position and the open end position lying portion of the opening or closing path of the movable furniture part rests on this or follows this, wherein conveniently the at least one ejection element of the ejection device over 50%, preferably more than 80%, of the opening or closing path of the movable furniture part rests against this ,

According to an alternative embodiment of the invention, it is provided that the means for directly or indirectly coupled or coupleable means for moving the at least one ejection element beyond the first open position are arranged on the furniture body and / or in or on the ejection device.

Regardless of whether the ejection element is arranged translationally or rotatably movable on the furniture body or on the movable furniture part, provides a further embodiment of the invention that the furniture part in or on the furniture body translationally movable, for example, designed as a drawer, is stored. According to a further embodiment, however, the movable furniture part can also be rotatably mounted movably in or on the furniture body, again independently of whether the ejection element is arranged translationally or rotatably movably on the furniture body or on the movable furniture part.

That is, the invention is suitable for all conceivable combinations of a movable furniture part with an ejection element, it must only be ensured that the position of the ejection element with respect to its initial position with locked drive device in the first open position, that is after completion of the ejection process, and changed at the beginning of the charging process. In other words, the distances between the impact point of the ejection element in the starting position and the impact point in its position after completion of the ejection process on the one hand and the distance between the impact point of the ejection element in the starting position and the impact point in its position after completion of the opening process on the other hand are different.

A preferred embodiment is characterized by a rotatably mounted ejection element, wherein the opening angle of the ejection element in its position after completion of the ejection process in the first open position of the movable furniture part on the one hand, and the opening angle of the ejection element in its position after completion of the opening process in the open end position of the movable Furniture part, on the other hand, are different.

If the movable furniture part is also rotatably mounted, the maximum opening angle of the ejection element, the maximum opening angle of the movable furniture part conveniently approximately the same size, whereby the ejection element can follow the movable furniture part substantially throughout the opening path of the movable furniture part.

Fig. 1

ein erstes Ausführungsbeispiel eines erfindungsgemäßen Möbels mit einem drehbar gelagerten, bewegbaren Möbelteil,

Fig. 2a - 2d

jeweils das bewegbare Möbelteil und das Ausstoßelement in unterschiedlichen Stellungen,

Fig. 3a - 3c

schematisch unterschiedliche Stellungen des bewegbaren Möbelteils,

Fig. 4a - 4c

schematisch unterschiedliche Stellungen des Ausstoßelementes,

Fig. 5a

eine Explosionsdarstellung eines bevorzugten Ausführungsbeispiels einer erfindungsgemäßen Ausstoßvorrichtung,

Fig. 5b

eine Hinteransicht des Oberteiles des Ausstoßelements aus Fig. 5a,

Fig. 6a - 15

unterschiedliche Stellungen des bewegbaren Möbelteils und der Ausstoßvorrichtung nach Fig. 5a während eines Öffnungs- und Schließvorganges des bewegbaren Möbelteiles,

Fig. 16a

eine Explosionsdarstellung eines zweiten Ausführungsbeispiels einer erfindungsgemäßen Ausstoßvorrichtung,

Fig. 16b

eine Hinteransicht des Oberteils des Ausstoßelementes aus Fig. 16a und

Fig. 17 - 28

unterschiedliche Stellungen des bewegbaren Möbelteils und der Ausstoßvorrichtung aus Fig. 16a während eines Öffnungs- und eines Schließvorganges des bewegbaren Möbelteils.

Further advantages and details of the invention are explained in more detail in the following description of the figures with reference to the embodiments shown in the drawing. It shows:

Fig. 1

a first embodiment of a piece of furniture according to the invention with a rotatably mounted, movable furniture part,

Fig. 2a - 2d

in each case the movable furniture part and the ejection element in different positions,

Fig. 3a - 3c

schematically different positions of the movable furniture part,

Fig. 4a - 4c

schematically different positions of the ejection element,

Fig. 5a

an exploded view of a preferred embodiment of an ejection device according to the invention,

Fig. 5b

a rear view of the upper part of the ejection element Fig. 5a .

Fig. 6a - 15

different positions of the movable furniture part and the ejector after Fig. 5a during an opening and closing operation of the movable furniture part,

Fig. 16a

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

Fig. 16b

a rear view of the upper part of the ejection element Fig. 16a and

Fig. 17 - 28

different positions of the movable furniture part and the ejection device Fig. 16a during an opening and a closing operation of the movable furniture part.

Fig. 1 shows in perspective quite generally an inventive furniture 1, in which a movable furniture part 3 is rotatably supported by means of two hinges 28 on a furniture body 2. The ejection device 4 is arranged on the furniture body 2 inside, substantially flush with the front edge of the furniture body 2, such that the also rotatably mounted ejection element 5 can move the movable furniture part 3 in the opening direction OR.

Fig. 2a shows in plan view a section of the in Fig. 1 shown furniture 1, wherein the movable furniture part 3 is in its closed end position. The remaining between the furniture part 3 and the furniture body 2 gap is necessary to bring the movable furniture part 3 of its closed end position in a - seen in the closing direction - behind lying release position in which the locking of the drive device for the discharge element is released. After unlocking the drive device pushes the ejection element 5, the movable furniture part 3 in a first open position ( Fig. 2b ). At this time, the energy storage of the drive device has already completely discharged and the ejection element 5 has ended the ejection process. The reference numeral 26 denotes the triggering element of the ejection device, which will be discussed in detail at a later time. Until this in Fig. 2b As shown, the invention follows the functional principle of already known "touch-latch" mechanisms.

The invention now uses the in Fig. 2c shown position of the movable furniture 3 on. As with conventional "touch latch" - mechanisms, the opening of the movable furniture part 3 on the in Fig. 2b shown first open position addition done by the user, since the ejection element 5 has already finished the ejection process. However, while in the prior art the ejection element 5 no longer changes its position during a movement of the furniture part 3 beyond the first open position, the ejection device according to the invention has means for moving the ejection element 5 over the in Fig. 2b shown first open position on.

Fig. 2d shows both the movable furniture part 3 and the discharge element 5 in the fully open position, the fact that the discharge element 5 on the movable furniture part 3 in the full open position no longer abuts against this only allows a simple construction of the ejection device. Of course, it is also possible to store the ejection element 5 in the ejection device in such a way that the ejection element 5 rests on the latter even in the fully open position of the movable furniture part 3.

In the Fig. 3a - 3c Different positions of the movable furniture part 3 are shown. It shows Fig. 3a the movable furniture part 3 in the closed position S, in which the movable furniture part 3 is aligned substantially parallel to the front of the furniture body 2. In Fig. 3b is the movable furniture part 3 in its first open position O, which corresponds to the position of the movable furniture part 3 after completion of the ejection process. With β, the opening angle is referred to, which includes the movable furniture part 3 between its closed position S and its first open position O. After completion of the ejection operation, the movable furniture part 3 is moved by the user beyond the first open position O out into its open end position E. The opening angle β 'extends between the closed position S and the open end position E of the movable furniture part. 3

It should be noted that the open end position E is not necessarily the full open position of the movable furniture part 3 - as in Fig. 3c is shown - must correspond, ie, the opening angle β 'with the end position E of the movable furniture part 3 only needs to be greater than the opening angle β in the closed position S of the movable furniture part 3 and less than or equal to the maximum opening angle at full open position of the movable furniture part 3.

Analog show the Fig. 4a - 4c different positions of the ejection element 5, which is rotatably supported in the ejection device 4 in the embodiment shown. Fig. 4a shows the ejection element 5 in the starting position S ', which corresponds to the position of the ejection element 5 in the locked ejection device 4 and the movable furniture part 3 in the closed position. Fig. 4b shows the position O 'of the ejection element 5 after completion of the ejection process. The opening angle α extends between the position O 'of the ejection element 5 and the position of the Ejection element 5 in the starting position S '. With d, the distance between the impact point of the ejection element 5 in the closed position S 'and the impact point of the ejection element 5 is designated after completion of the ejection process, while with d' the distance between the impact point of the ejection element 5 in the closed position S 'and the impact point of the ejection element 5 after Termination of the opening operation of the movable furniture part is designated.

Comparing the Fig. 4b and 4c showing the position E 'of the ejection element 5 after completion of the opening operation of the movable furniture part 3, it can be seen that the distances d, d' and the opening angle α, α 'are different in the two positions.

A basic idea of the invention is thus to bring the ejection element 5 after completion of the ejection process in a - seen in the opening direction - behind the position O 'lying position E', which corresponds to the position of the ejection element 5 after completion of the opening operation of the movable furniture part 3 , This ensures that the movable furniture part can be coupled with the ejection element 5 already at the beginning or immediately after the beginning of the closing operation, whereby the coupling of the ejection element 5 with the drive device of the charging process of the energy storage can already start in the first section of the closing path, while at the known devices, the loading of the energy storage in the closed position immediately upstream partial section of the closing path of the movable furniture part takes place.

Due to the invention and the ratchet following training of the ejection device, such that the ejection element after completion of the ejection process with respect to the energy storage of the drive device during the further opening path is freely movable, while in the opposite direction the energy storage permanently, ie in each Applied to position, can now be used to load the energy storage device essentially the entire path that covers the movable furniture part when closing. In this case, on the one hand, the path traveled by the movable furniture part during the charging process of the energy storage device can be selected to be greater than the travel traveled by the movable furniture part during the ejection process, so that a user is unable to do so extended way must apply less force to load the energy storage.

The second possibility is to leave the path that travels the movable furniture part during the charging process and the ejection process, substantially the same length, but to move this section in the immediate vicinity of the open end position of the closing or opening path of the movable furniture part. This ensures that the user applies the force for loading the energy storage right at the beginning of the closing process, whereby the user the impression of a uniform closing operation of the movable furniture part is conveyed.

Look at two in the Fig. 6a - 15 and Fig. 16a - 28 illustrated embodiments, the functional sequence of a piece of furniture according to the invention during an opening and closing operation will be described below.

Fig. 5a shows an exploded view of a first embodiment of an ejection device according to the invention 4. All parts of the ejection device 4 according to the invention are arranged in a closed housing 20, wherein the housing cover is not shown for reasons of clarity. The ejection element 5, which is rotatably arranged in the housing 20, is designed as a one-armed lever and has an upper part 27 and a lower part 27 '. At its opposite end of the pivot point, a roller 29 is rotatably arranged, wherein the axis of rotation of the roller 29 and the ejection element 5 are substantially parallel. About this role 29, the coupling of the ejection element 5 takes place with the movable furniture part.

Between the lower part 27 'and the upper part 27 of the ejection element 5 are rotatably and coaxially with the ejection element 5, a bearing element 13, a coupling element 16 and a coupling element 14 are arranged. In the bearing element 13, a pinion 12 and a brake disc 19, which are rotatably connected to each other, rotatably mounted in an axis substantially parallel to the axis of rotation of the ejection element 5 and the bearing element 13. The pinion 12 is adapted to engage with a gear portion Z (see FIG. Fig. 5b ), while the braking member 19 is adapted to engage with a gear-shaped portion Z 'disposed on the coupling member 16. Between the coupling element 16 and the brake disc 19, a guide member 30 is further arranged, by means of which a clean engagement of the discs arranged on the disc 19 teeth arranged in the gear-shaped portion Z 'of the coupling element 16 is ensured, that is, it prevents the engagement of the Brake disk 19 with the coupling element 16 is a tooth tip of the brake disc 19 to a tooth tip of the gear-shaped portion Z 'of the coupling element 16 comes to rest.

In the embodiment shown, the means for moving the ejection element 5 are formed by a first open position of two auxiliary drives 23,23 ', wherein the first auxiliary drive 23' in the form of a spiral spring, the bearing element 13 whose mobility is limited by a stop element arranged in the housing 22, acted upon in the opening direction to ensure in this way the necessary for moving the ejection element 5 freewheel between the brake disc 19 and the coupling element 16. The second auxiliary drive 23 'is formed by a torsion spring, the first leg 24 engages the upper part 27 of the ejection element 5, while the second leg 24' is rotatably but fixedly connected to the housing 20 of the ejection device 4.

Furthermore, in the ejection device 4, the drive device 6 is arranged for the ejection element 5, which has a force accumulator 8 to be loaded manually in the form of a tension spring, a retaining bracket 7 for the energy accumulator 8 and an adjusting element 9 for adjusting the force accumulator 8. The adjusting element 9 is arranged in the housing 20 such that it is accessible from the outside, whereby a simple and straightforward adjustment of the force accumulator 8 is ensured. At its free end, the force accumulator 8 of the drive device 6 designed as a tension spring is mounted on a recess 10 of the coupling element 14, whereby the coupling element 14 is moved in the direction of the drive device 6 when the force accumulator 8 is unloaded.

The locking of the drive device 6 takes place in the illustrated embodiment via a toggle lever 17 and a dead center mechanism. Here, the first link 18 of the toggle lever 17 is pivotally connected at its free end to the coupling element 14, while the second link 18 'pivotally but stationary on the housing 20 of the ejector 4 is arranged. Of the Dead center mechanism has a lever 15 which is pivotally connected at one end to the knee of the toggle lever 17 and at the other end pivotally connected to the coupling element 16. The locking of the drive device 6 thus takes place in that when loading the force accumulator 8 via the ejection element 5, the coupling element 16 due to its engagement with the brake disc 19, and with the coupling element 16, the coupling element 14, so far moved to the right until the energy storage. 8 is fully loaded and the lever 15 exceeds the dead center of the toggle lever 17, whereby the toggle lever 17 - and thus the Kopplungslement 14 - is locked.

The unlocking of the drive device 6 via a trigger mechanism 25, a trigger element 26, an eccentric rotary member 33, a return spring 32 for the rotary member 33, a wedge-shaped actuator 34, a release lever 35, a damper element 36 and acted upon by the damper element 36 Rückholelement 37 for has the rotary member 33. The coupling of the trigger mechanism 25 with the lever 15 of the dead center mechanism via a, preferably lever-shaped, connecting part 38 which is pivotally connected at one end pivotally connected to the release lever 35 and at its opposite end to the lever 15 of the dead center mechanism or the coupling element 16 ,

In Fig. 6a the triggering device 4 is shown at locked power storage 8. The movable furniture part 3 is in the closed position, wherein the trigger element 26 of the release mechanism 25 rests without play on the movable furniture part 3. On the play-free application of the trigger element 26 on the movable furniture part 3, which takes place essentially by means of the acted upon by the return element 37 wedge-shaped control element 34 will be discussed later in more detail.

For reasons of clarity, the figure of the cover of the housing 20 and the upper part 27 of the ejection element 5 has been omitted. In the position shown, the energy accumulator 8 of the drive device 6 is loaded. That is, the tension spring, which forms the force accumulator 8, is mounted in the spring position 7 and tensioned by means of the coupling element 14. The housing 20 has an outlet opening 21 for the ejection element 5 and the triggering element 26 on its front side facing the movable furniture part 3. All other parts of the ejector 4 are disposed within the closed housing 20, with the exception of the adjusting element 9 for the energy accumulator. 8

The locking of the force accumulator 8 via a force acting on the coupling element 14 toggle lever 17 which is locked by a lever 15 of a dead center in the position shown. The ejection element 5 is locked on the trained as a torsion spring auxiliary drive 23 in its initial position S '. In this case, the auxiliary drive 23 is arranged such that the one leg 24 'of the spring in a bearing point 40 on the housing and the second leg 24 of the auxiliary drive 23 in a bearing point 39 on the lower part 27' of the ejection element 5 are arranged articulated.

Characterized in that the bearing point 39 is in the starting position of the ejection element 5 on the right side of the connecting line V of the pivot point of the ejection element 5 and the bearing point 40 ( Fig. 6b ), it is ensured that the auxiliary drive 23 locks the ejection element 5 in its initial position. Due to the rotational movement of the ejection element 5 during the ejection process, this bearing point 39 moves to the left until it exceeds the connecting line V, whereby the auxiliary drive 23 acts on the ejection element 5 in the opening direction. That is, the trained as a rotary compression spring auxiliary drive 23 is locked similar to the drive device 6 by means of a dead center mechanism.

In the position shown, therefore, the coupling element 14, the coupling element 16 and the ejection element 5 are not freely movable due to the locked toggle lever 17 and the position of the auxiliary drive 23, while the bearing element 13 and thus the pinion 12 and the brake member 19 are rotatable. In this case, the bearing element 13 is acted upon by a trained as a bow spring auxiliary drive 23 'and acted upon by this in the opening direction of the movable furniture part, wherein the teeth of the pinion 12 engage in the gear-shaped portion Z of the upper part 27 of the ejection element 5.

Characterized in that the bearing element 13 is pushed away via the auxiliary drive 23 'from the coupling element 16, the necessary during the opening process between the coupling element 16 and the brake disk 19 freewheel can be ensured. Namely, the braking element 19 during the opening process on the gear-shaped section Z 'of the Coupling element 16 engage, this would cause a blockage of the pinion 12 and thus of the ejection element 5 result, ie, the regurgitation of the movable furniture part 3 by means of the ejection element 5 would not be possible in such a constellation.

Fig. 6b differs from Fig. 6a only in that the upper part 27 of the ejection element 5, on which a driver 41 is formed, is shown.

Fig. 7 shows the movable furniture part 3 in the release position A, which is considered in the closing direction SR behind the closed position S of the movable furniture part 3, wherein the movable furniture part 3 moves in the embodiment shown by the user by applying pressure to the movable furniture part of the closed position S in the release position A. becomes. With the movable furniture part 3, the trigger element 26 is moved further into the housing 20, and the wedge-shaped adjusting element 34 of the release lever 35 moves to the left. The trigger element 26, the wedge-shaped control element 34 and the trigger lever 35 are geared formed and arranged as members of a rolling joint. About the L-shaped release lever 35 and the lever-shaped connecting part 38, the lever 15 of the dead center mechanism is also moved to the left, whereby the lock of the toggle lever and thus the locking of the energy accumulator 8 is repealed.

Although the illustrated triggering mechanism is a preferred embodiment, the invention should not be limited to this embodiment shown. So it would be quite possible and conceivable to realize the triggering of the ejection device instead of by means of the movable furniture part 3, for example. By a switch, a button or by direct pressure on the trigger element 26.

In Fig. 8 the ejection process is completed and the movable furniture part 3 has reached its first open position O. By relaxing the force accumulator 8, the coupling element 14 has been moved to the left and via the coupling element 14, the ejection element 5 from the housing 20 in the opening direction OR. The coupling of the ejection element 5 with the movable furniture part 3 takes place via the roller 29, whereby the movable furniture part 3 easily along the ejection element 5 along can slide. The coupling element 16 was also moved in the opening direction OR via the lever 15, which is connected at its one end to the knee of the bent knee lever 17, to such an extent that between the brake disc 19 and the gear-shaped portion Z ', the coupling element 16 and the guide element 30 remains a gap, so that the rotatability of the pinion 12, which is yes in engagement with the gear-shaped portion Z on the upper part 27 of the ejection element 5 (not shown), is given.

A further moving out of the bearing element 13, which is indeed acted upon by the auxiliary drive 23 'in the opening direction OR is, by the arranged in the housing 20 stop element 22 (FIG. Fig. 5a ) prevented.

Furthermore, it is off Fig. 8 It can be seen that the bearing point 39 for the leg 24 of the trained as a rotary pressure spring auxiliary drive 23 in comparison to Fig. 6b on the other side of the connecting line V between the pivot point of the ejection element and the bearing point 40 of the auxiliary drive 23 is located, so that the auxiliary drive 23 now acts on the ejection element 5 in the opening direction OR. The active force of the auxiliary drive 23 is selected such that it can move the ejection element 5 alone to the outside, but its effective force is not sufficient to open on the ejection element 5 adjacent to the ejection element 5 movable furniture part 3 on.

Of course, it would also be possible to choose the effective force of the auxiliary drive 23 so large that not only the ejection element 5 but also the movable furniture part 3 could be moved beyond the first open position O out into an open end position E by means of the auxiliary drive 23. Such a configuration would lead to the user when closing the movable furniture part 3 in addition to the force that is necessary to charge the energy accumulator 8, then the relatively large force to charge the auxiliary drive would have to apply, creating the impression of the user sluggish movable furniture part would arise. However, with a correspondingly large effective force of the auxiliary drive 23, a piece of furniture 1 with a movable furniture part 3 and an ejection device 4 could be realized in which the user would only have to trigger the ejection device 4 to move the movable furniture part 3 from a closed position to an open end position, eg. by pressure on the movable furniture part, whereby the movable Furniture part 3 would then be moved in a first section by the ejection element 5 and in a further section by means of the auxiliary drive 23 in its open end position, without further intervention of the user would be necessary.

In the illustrated embodiment, however, the active force of the auxiliary drive 23 is just enough to track the ejection element 5 the movable furniture part 3, so that the applied by the user when closing the movable furniture part force to load the auxiliary drive 23 of this is not perceived.

An open end position E of the movable furniture part 3 is in Fig. 9 shown. It can be seen that compared to Fig. 8 the position of the movable furniture part 3, the ejection element 5 and the auxiliary drive 23 has changed. Due to the fact that the auxiliary drive 23 has discharged and the movable furniture part 3 has been brought by the user into an open end position E, the ejection element 5 could follow the movement of the movable furniture part 3. Likewise, the position of the pinion 12 has changed with respect to the arranged on the upper part 27 of the ejection element 5 gear-shaped portion Z, that is, the engagement of the pinion 12 at this gear-shaped portion Z now takes place in a more distant from the roller 29 point of the gear-shaped portion Z.

Now, if the movable furniture part 3, starting from its open end position E moves in the closing direction SR, it comes first to engage the brake disc 19 with the gear-shaped portion Z 'of the coupling element 16, as is Fig. 10 is shown. As a result, the rotatability of the pinion 12 along the gear-shaped section Z on the ejection element 5 is blocked and the coupling element 16 is moved into the housing 20 by the movement of the ejection element 5 in the closing direction. About the coupling element 16 and the hinged thereto toggle lever 17, the coupling element 14 is moved so far to the right until the energy storage device 8 of the drive device 6 is fully charged. At the same time, the auxiliary drives 23, 23 'are loaded during this movement ( Fig. 11a ).

How out Fig. 10 Furthermore, it can be seen, is ensured by means of the guide member 30 that the disc-shaped brake element 19 and the gear-shaped portion Z 'of the coupling element 16 engage each other such that each one Tooth head of the brake element 19 engages in a tooth root on the gear-shaped portion Z 'of the coupling element 16, whereby jerky movements of the ejection element 5 and thus of the movable furniture part 3 can be avoided.

Fig. 11b differs from Fig. 11 a fact that the lever 15 of the dead center mechanism has already overcome the dead center of the toggle lever 17, so that the force accumulator 8 of the drive device 6 is locked. Thus, the charging of the energy accumulator 8 is completed before the movable furniture part 3 has again reached its first open position O. After the charging process of the energy accumulator 8 is completed, the trigger element 26 of the trigger mechanism 25 is applied to the movable furniture part 3 on the remaining part of the closing path of the movable furniture part 3.

This points - as out Fig. 11b As can be seen, the upper part 27 of the ejection element 5 has a driver 41, which is designed to engage with an eccentric rotary element 33 of the triggering mechanism 25. The rotational element 33 is acted upon in the closing direction SR of the ejection element 5 by a return spring 32 to ensure that the driver 41 engages in the housing 20 on the rotary element 33 when the ejection element 5 is moved in.

In Fig. 12 now engages the driver 41 already on the eccentric rotary member 33 and takes this in the closing direction SR of the ejector 5 with. During this movement of the ejection element 5, the locking elements of the ejection device 4 for the force accumulator 8 remain unchanged and thus the locking of the drive device upright.

In Fig. 13 the bearing point 39 of the auxiliary drive 23 just exceeds the connecting line V between the pivot point of the abutment element 5 and the bearing point 40 of the auxiliary drive 23 on the housing 20, whereby the auxiliary drive 23 now acts on the abutment element 5 in the opposite direction, ie, the ejection element 5 is now the auxiliary drive 23 returned to its original position and locked there. The driver 41 of the ejection element 5 has brought the rotary member 33 in its one end position, whereby the return member 37 is fully tensioned. The eccentric rotary member 33 is not shown gear-shaped portion connected to the pinion of a damping element 36 in order to dampen the return movement of the rotary member 33 when relaxing the trained as a tension spring return element 37 and to avoid noise that could be caused by the abutment of the rotary member 33 in its other end position. Due to the bearing of the wedge-shaped adjusting element 34 by means of a ball head in a ball socket formed on the eccentric rotary member 33, the wedge-shaped adjusting element 34 is moved with the eccentric rotary member 33.

In Fig. 14 the movable furniture part 3 is already back in the closed position S, in which it can be held, for example, via the hinge 28. The eccentric rotary element 33 is already snapped over the driver 41 of the ejection element 5 and is moved by the return element 37 to the left. With the rotary member 33 and the wedge-shaped adjusting element 34 is moved to the left, whereby the trigger element 26 is moved out of the housing 20 in the direction of the movable furniture part 3 due to the formed between the wedge-shaped adjusting element 34 and the trigger element 26 Wälzgelenkes, and indeed until the trigger element 26 rests without play on the movable furniture part 3 ( Fig. 15 ).

In the Fig. 15 position shown corresponds to in Fig. 6b illustrated position, ie, the ejection element 5 is located in the locked drive device 6 in the starting position, the movable furniture part 3 is in the closed position and the trigger element 26 is free of play on the movable furniture part 3.

Fig. 16a shows analogously to Fig. 5a an exploded view of a second embodiment of an ejection device according to the invention 4. The same parts were numbered the same, which is why a further description of these parts is omitted.

That in the Fig. 16a - 28 illustrated second embodiment differs from that in the Fig. 5a - 15 illustrated first embodiment, especially in the construction of the trigger mechanism 25 and in its coupling with the coupling element 16 via the lever-shaped connecting part 38th

As in the first embodiment, the triggering mechanism 25 includes a trigger member 26, an eccentric rotary member 33, and a damper member 36, the damper member 36 including a bearing member 42, a rotary damper 43, and a pinion 44. In contrast to the first embodiment, the trigger element 26 is connected in the second embodiment directly to the eccentric rotary member 33 via a rolling joint. Although the connection of the trigger mechanism 25 with the coupling element 16 is again via a lever-shaped connecting part 38, which is pivotally connected at one end to the bearing part 42 of the damper element 36. That is, the bearing member 42 and the rotary damper 43 from the second embodiment take over the function of the trigger lever 35 and the Rückholelementes 37 from the first embodiment.

On its opposite end of the lever-shaped connecting part 38 is no longer pivotally connected to the coupling element 16. Instead, a detent 45 is arranged at the free end of the lever-shaped connecting part 38, which is designed to engage with a projection 46 formed on the coupling element 16. The coupling element 16 in turn is in turn pivotally connected to the lever 15 of the dead center mechanism for the toggle lever 17 pivotally connected.

In contrast to the first embodiment, the second embodiment has only one auxiliary drive 23 which is formed by a bow-shaped spring which acts between the coupling element 14 and the ejection element 5. Another difference is the formation of the peripheral surface of the disc-shaped brake element 19 and the corresponding portion Z 'on the coupling element 16. While in the first embodiment, the engagement between the brake element 19 and the coupling element 16 was mainly positive fit due to the gear-shaped training, engage in the second embodiment of the Bremselement 19 and the coupling element 16 frictionally against each other.

In Fig. 17 the triggering device 4 is shown at locked power storage 8. The movable furniture part 3 is in the closed position S, wherein the trigger element 26 of the release mechanism 25 rests without play on the movable furniture part 3. In the position shown, the energy accumulator 8 is loaded and the drive device 6 locked. The locking takes place via a force acting on the coupling element 14 toggle lever 17 which is locked by a lever 15 of a dead center in the position shown.

The ejection element 5 is locked by means of the hinge 28 in its initial position S. The coupling element 14, the coupling element 16 and the ejection element 5 are not freely movable due to the locked toggle lever 17 and held by the hinge in its closed position movable furniture part 3, while the bearing element 13 and thus the pinion 12 and the brake member 19 are rotatable. The necessary for the freewheel between the coupling element 16 and the brake element 19 freewheel is ensured in a simple manner by a stop 22 'for the bearing element 13 in the housing 20.

In this embodiment, it must be ensured that the holding force of the hinge is greater than the effective force of the auxiliary drive 23, which acts on the ejection element 5 permanently in the opening direction OR of the movable furniture part 3.

Fig. 18 differs from Fig. 18b only in that the upper part 27 of the reject element 5 is shown transparent (dashed). In addition, in Fig. 18 already exerted pressure on the movable furniture part 3, which can be seen from the changed position of the release lever 15.

Fig. 19 shows the movable furniture part 3 in the release position A, which - viewed in the closing direction SR - behind the closed position S of the movable furniture part 3, wherein the movable furniture part 3 is moved by the user by applying pressure from the closed position S in the release position A. With the movable furniture part 3, the trigger element 26 is moved further into the housing 20, whereby due to the rolling joint, the eccentric rotary element 33 and with this the bearing part 42 moves to the left. About arranged on the lever-shaped connecting part 38 locking lug 45 ( Figures 16A ) At the same time the coupling element 16 and thus the lever 15 of the dead center mechanism is also moved to the left, whereby the lock of the toggle lever 17 and thus the locking of the energy accumulator 8 is repealed.

In Fig. 20 the ejection process is completed and the movable furniture part 3 has reached its first open position O. By relaxing the force accumulator 8, the coupling element 14 has been moved to the left and via the coupling element 14, the ejection element 5 from the housing 20 in the opening direction. The coupling of the ejection element 5 with the movable furniture part 3 is again via the roller 29, whereby the movable furniture part 3 can easily slide on the ejection element 5 along. Further outward movement of the bearing element 13 is achieved by the stop element 22 (FIG. Fig. 16a ) prevented.

Thus, the eccentric rotary member 33, which is moved during the opening operation on the driver 41 of the ejection element 5 to the left, after passing the driver 41 returns to such a position in which the driver 41 when closing the movable furniture part on the eccentric rotary member 33 attack again can, between the housing 20 and the eccentric rotary member 33, a return spring 32 is arranged in the form of a compression spring.

An open end position E of the movable furniture part 3 is in Fig. 21 a shown. It can be seen that compared to Fig. 21 a has changed the position of the movable furniture part 3, the ejection element 5 and the auxiliary drive 23. As a result of the fact that the movable furniture part 3 has been brought into an open end position E by the user, the auxiliary drive 23 has been able to discharge and the ejection element 5 has followed the movement of the movable furniture part 3. Likewise, the position of the pinion 12 has changed with respect to the arranged on the upper part 27 of the ejection element 5 gear-shaped portion Z, that is, the engagement of the pinion 12 at this gear-shaped portion Z now takes place in a more distant from the roller 29 point of the gear-shaped portion Z.

Fig. 21b corresponds to the in Fig. 21a illustrated position of the ejector 4 and differs only in that the peripheral surface of the brake element 19 and the corresponding portion Z 'of the coupling element 16 are formed like a gear in the first embodiment. Again, to avoid a jerky engagement of the brake element 19 with the coupling element 16, a guide element 30 is arranged on the coupling element 16.

Now, if the movable furniture part 3 is moved from its open end position in the closing direction SR, it comes first to the engagement of the brake element 19 with the portion Z 'of the coupling element 16, as is Fig. 22a and Fig. 23 is shown. As a result, the rotatability of the pinion 12 along the section Z on the ejection element 5 is blocked and the coupling element 16 is moved into the housing 20 by the movement of the ejection element 5 in the closing direction SR. About the coupling element 16 and the hinged thereto toggle lever 17, the coupling element 14 is moved so far to the right until the energy storage device 8 of the drive device 6 is fully charged. At the same time, the auxiliary drive 23 is loaded during this movement.

Fig.22b again shows the variant in which the peripheral surfaces of the brake element 19 and the portion Z 'of the coupling element 16 are formed gear-shaped. It can be seen that it is ensured by means of the guide element 30 that the brake element 19 and the gear-shaped portion Z 'of the coupling element 16 engage each other such that in each case a tooth head of the brake element 19 engages in a tooth root on the gear-shaped portion Z' of the coupling element 16 jerky movements of the ejection element 5 and thus of the movable furniture part 3 can be avoided.

Fig. 24 differs from Fig. 23 in that the lever 15 of the dead center mechanism has already overcome the dead center of the toggle lever 17, so that the force accumulator 8 of the drive device 6 is locked. Thus, the charging of the energy accumulator 8 is completed before the movable furniture part 3 has again reached its first open position O. After the charging process of the energy accumulator 8 is completed, the trigger element 26 of the trigger mechanism 25 is applied to the movable furniture part 3 on the remaining part of the closing path of the movable furniture part 3.

This points - as out Fig. 25 The upper part 27 of the ejection element 5 has a driver 41 which is designed to engage with the eccentric rotary element 33 of the triggering mechanism 25. As already mentioned, this eccentric rotary element 33 is acted on by a return spring 32 to ensure that the driver 41 engages in the housing 20 on the rotary element 33 when the ejection element 5 is moved in.

In Fig. 25 engages the driver 41 already on the eccentric rotary member 33 and takes this in the closing direction SR of the ejector 5 with. During this movement of the ejection element 5, the locking elements of the ejection device 4 for the force accumulator 8 remain unchanged and thus the locking of the drive device 8 upright.

In Fig. 26 the driver 41 of the ejection element 5 has brought the eccentric rotary element 33 into its one end position. The eccentric rotary member 33 is connected via a gear-shaped portion, not shown, with the pinion 44 and the rotary damper 43 of the damper element 36 to dampen the return movement of the rotary member 33.

In Fig. 27 the movable furniture part 3 is already in the closed position S, in which it is held by the hinge. The eccentric rotary member 33 is already snapped over the driver 41 of the ejection element 5 and is moved by the damper element 36 to the left, whereby due to the formed between the eccentric rotary member 33 and the trigger element 26 Wälzgelenkes the trigger element 26 from the housing 20 in the direction of the movable furniture part 3rd is moved, and that until the trigger element 26 without play on the movable furniture part 3 ( Fig. 28 ).

In the Fig. 28 position shown corresponds to in Fig. 17 illustrated position, ie, the ejection element 5 is located at locked drive device 6 in the starting position, the movable furniture part 3 is in the closed position S and the trigger element 26 is free of play on the movable furniture part 3.

The illustrated embodiments are of course not to be understood in a limiting sense, but just to illustrate individual examples of numerous ways the inventive idea of an ejection device for a movable furniture part with an ejection element, wherein the movable furniture part by means of the ejection element after completion of the ejection process moves further in the opening direction becomes.

Claims (7)

1. An article of furniture (1) comprising a moveable furniture part (3) and an ejection device which has at least one ejection element (5) for moving the moveable furniture part (3) from a closed position (S) into a first open position (O) and at least one drive device with a force storage means (8) which is preferably to be manually loaded for the at least one ejection element (5), characterised in that the ejection element (5) is moveable upon movement in the opening direction (OR) from the first open position (O) into an opened end position (E) independently of the force storage means (8), the ejection device (4) is adapted for at least partially loading the force storage means (8) of the drive device (6) for the ejection element (5) during a closing movement of the moveable furniture part (3) in a portion of the opening or closing travel of the moveable furniture part (3), which portion is between the opened end position (E) and the first open position (O), and the ejection device (4) is adapted to start the loading process for the force storage means (8) substantially upon each closing movement of the moveable furniture part (3), preferably independently of the position of the moveable furniture part (3).
2. An article of furniture according to claim 1 characterised in that the ejection element (5) is mounted rotationally moveably, wherein the opening angle of the ejection element (5) after termination of the ejection process in the first open position (O) of the moveable furniture part (3) on the one hand and at the beginning of the loading process of the force storage means (8) on the other hand or the spacing (d) between the impact point of the ejection element (5) in the starting position (S') and the impact point after termination of the ejection process on the one hand and the spacing (d') between the impact point of the ejection element (5) in the starting position (S') and the impact point at the beginning of the loading process of the force storage means (8) on the other hand are different.
3. An article of furniture according to claim 1 or claim 2 characterised in that the ejection device (5) has a rotatably mounted ejection element (5) and a lockable drive device (6), preferably a coil tension spring, which are operatively connected together by way of a transmission, preferably a gear transmission.
4. An article of furniture according to claim 3 characterised in that the ejection element (5) is connected to the drive device (6) by way of a coupling element (4) and has a portion (Z) which is of a toothed gear form and which is adapted for engagement with a drive pinion (12) mounted in a rotatably arranged mounting element (13).
5. A method of opening or closing a furniture part (3) mounted moveably in or to a furniture carcass (2) of an article of furniture (1) by means an ejection device having an ejection element (5) which is or can be acted upon by a lockable drive device, preferably a force storage means (8) which is to be loaded manually, wherein the force storage means (8) is loaded up during the closing movement of the moveable furniture part (3) by means of the ejection element (5), in particular according to one of claims 1 to 4, characterised in that loading of the force storage means (8) is effected in accordance with the ratchet principle insofar as the ejection element (5) is freely moveable after termination of the ejection process in relation to the force storage means (8) during the further opening travel while in the opposite direction it acts on the force storage means (8) in any position, wherein the loading process of the force storage means (8) is started after opening of the moveable furniture part (3) beyond a first open position (O) during a closing movement of the moveable furniture part (3) in a portion of the opening or closing travel of the moveable furniture part (3), which portion is between the first open position (O) and the opened end position (E), and wherein the loading process of the force storage means (8) is started substantially upon each closing movement of the moveable furniture part (3), preferably independently of the respective position of the moveable furniture part (3).
6. A method according to claim 5 characterised in that the ejection element (5) is connected to the drive device (6) by way of a coupling element (4) and has a portion (Z) which is of a toothed gear form and which is adapted for engagement with a drive pinion (12), wherein each acted-upon position corresponds to a tooth of the portion (Z) in toothed gear form.
7. A method according to claim 6 characterised in that the drive pinion (12) is mounted in a rotatably arranged mounting element (13).

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