ES2936095T3 - Ejection device for a movable furniture part - Google Patents

Abstract

The invention relates to an ejection device (1, 101, 201) for a movable furniture part (2, 22), having: at least one ejection element (3, 203) for ejecting the movable furniture part ( 2, 22) from a closed position to an open position; at least one ejection energy accumulator (4, 204) for applying force to the at least one ejection element (3, 203) when the mobile part of the furniture (2, 22) is ejected from the closed position to the open position; and at least one locking device (5, 205) for locking the at least one ejection element (3, 203) against the application of force from the at least one ejection energy store (4, 204). The at least one locking device (5, 205) can be unlocked by pushing the movable furniture part (2, 22) further into a position further pushed behind the closed position in the closing direction (6). There is at least one switching element (7, 207) which is operatively connected to the at least one locking device (5, 205) and has at least one activation position in which the at least one locking device (5, 205) can be unlocked and at least one deactivation position in which the at least one locking device (5, 205) cannot be unlocked. The at least one switching element (7, 207) can be moved to the at least one deactivation position when the movable part of the furniture (2, 22) is ejected from the closed position to the open position and/or when unlocking the at least one blocking device (5, 205). 205) can be unlocked and at least one deactivation position in which at least one locking device (5, 205) cannot be unlocked. The at least one switching element (7, 207) can be moved to the at least one deactivation position when the movable part of the furniture (2, 22) is ejected from the closed position to the open position and/or when unlocking the at least one blocking device (5, 205). 205) can be unlocked and at least one deactivation position in which at least one locking device (5, 205) cannot be unlocked. The at least one switching element (7, 207) can be moved to the at least one deactivation position when the movable part of the furniture (2, 22) is ejected from the closed position to the open position and/or when unlocking the at least one blocking device (5, 205). (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Ejection device for a movable furniture part

The invention relates to an ejection device for a movable furniture part according to the preamble of claim 1. The invention also relates to a piece of furniture with a furniture body, at least one furniture part that can be moved relative to the furniture body and at least one ejection device of this type.

An ejection device according to the preamble of claim 1 is known, for example, from WO 2013/106873 A1. A fundamental problem with this ejection device is that during a movement of the movable furniture part from the open position to the closed position it would be desirable to prevent the locking device from unintentionally disengaging again and the furniture part mobile is ejected again by the ejection device from the closed position to the open position.

To solve this problem, some solutions are already known in the state of the art. In WO 2013/106873 A1, for example, an overpressure protection is implemented, in which a movement of the movable furniture part to the overpressure position is prevented by means of a locking element when the movable furniture part reaches the position closed.

However, this solution has two drawbacks: on the one hand, a part of the energy available for the closing movement of the mobile furniture part must be branched to activate the protection against pressure. However, this is in contradiction with the desire to achieve a closing movement that is as harmonious and smooth as possible, since more energy has to be supplied for the closing movement than would actually be necessary. On the other hand, there is a risk that a user is not aware that the ejection device is equipped with an overpressure protection and that the blocking element or the overpressure protection is damaged by incorrect handling.

Therefore, the object of the present invention is to indicate an ejection device according to the preamble of claim 1 with improved overpressure protection compared to the prior art, in which in particular the described drawbacks are avoided. . Another object of the invention is to indicate a piece of furniture with such an ejection device according to the invention.

These objects are realized by the features of claims 1 and 9.

Therefore, in the ejection device according to the invention, provision is made for at least one switching element to be provided, which is operatively connected to at least one latching device, which has at least one activation position, in which the at least one locking device is unlockable, and at least one deactivation position, in which the at least one locking device is not unlockable, in which during ejection of the movable furniture part from the closed position to the open position and/or by unlocking the at least one locking device, the at least one switching element can be moved into the at least one deactivation position, in which at least one first coupling device of the at least one unlocking device has at least one contact point, in which the at least one first coupling device contacts the at least one switching element in the at least one activating position via the at least one contact point and at the at least one The contact point is made without contact with the at least one switching element in the at least one deactivation position, a further coupling device being provided via which the at least one switching element can be directly or indirectly coupled to the at least one ejection element, and in which at least one return device is provided, through which, after ejection of the movable furniture part from the closed position to the open position or after unlocking through the at least one release device, Unlatching, the at least one switching element can be moved from the at least one deactivation position to the at least one activation position.

Since during ejection of the movable furniture part and/or by unlocking the at least one locking device, the at least one switching element can be moved into the at least one deactivation position, and therefore the locking device lock cannot be released, it is ensured that the overpressure protection, i.e. unintentional release of the locking device, is activated by the opening movement of the movable furniture part and no longer, as provided according to the state of the technique, by the closing movement of the mobile furniture part. Therefore, it is not necessary to branch any part of the closing power to activate the overpressure protection.

In addition, the movable furniture part is no longer prevented from moving into the overpressure position. Rather, the solution according to the invention allows a movement of the movable furniture part from the closed position to the overpressure position. By having the at least one switching element in the at least one deactivation position - at least at the beginning of the movement of the movable furniture part into the overpressure position - it is ensured that the at least one locking device cannot be released during this motion. Mechanical damage to the overpressure protection is excluded.

The movement of the at least one switching element to the at least one deactivation position during ejection of the movable furniture part from the closed position to the open position is carried out in that another coupling device is provided, through which the at At least one switching element can be directly or indirectly coupled to at least one ejector element, the other coupling device preferably comprising a driving lug and a stop contour, with the stop contour particularly preferably being embodied as elongated hole in which the drive lug is movably mounted. In this way, therefore, a movement of the ejection element is used to move the at least one switching element into the at least one deactivated position. However, this does not necessarily have to be the case. It is likewise conceivable in an embodiment not according to the invention that when the movable furniture part is ejected the at least one switching element is moved into the at least one deactivation position, but independently of the movement of the at least one switching element. ejection.

It is provided that the at least one locking device has at least one unlocking device, which comprises at least one first coupling device for coupling the at least one unlocking device with at least one switching element. Likewise, the at least one first coupling device of the at least one unlocking device can have at least one contact point, so that the at least one first coupling device contacts the at least one switching element in the at least one activation position through the at least one contact point and at least one contact point in the at least one contact point with at least one switching element in the at least one deactivation position. In this case, the at least one switching element of the at least one activation position provides a buttress against which the at least one unlocking device can bear in order to unlock the locking device. This buttress is not present in the at least one deactivation position of the at least one switching element, so that the at least one unlocking device has no effect.

It is not decisive at what point in time or in what position of the movable furniture part relative to the furniture body the at least one return device moves from the deactivated to the activated position. Provision can therefore also be made that the movement of the at least one switching element from the at least one deactivation position to the at least one activation position takes place, for example, only when the closed position is reached again. of the mobile furniture part.

However, it has proven favorable if the at least one return device comprises a time element through which, after ejection of the movable furniture part from the closed position to the open position or unlocking of the at least one locking device, the at least one switching element can be moved with a time delay from the at least one deactivated position to the at least one activated position, wherein the time element preferably comprises at least one power accumulator and at least one damper, which opposes the at least one force accumulator.

Alternatively or additionally, it can be provided that the at least one return device comprises a detection device for detecting a relative position of the movable furniture part with respect to a furniture body and that the at least one switching element can be moved by the at least one return device, based on a predetermined relative position detected by the detection device, from the at least one deactivation position to the at least one activation position. The "relative position of the movable furniture part" with respect to the furniture body can mean a certain angular position of the two door leaves relative to one another.

Another advantageous embodiment of the invention consists in the fact that the at least one locking device comprises at least one lever arm which is pivotally mounted and/or can be positively and/or forcefully locked. A form-fitting fit can be realized, for example, by means of a retaining protrusion that engages behind a bolt or the like.

It has also turned out to be advantageous if a transmission device is provided which is arranged between the at least one ejection force accumulator and the at least one ejection element, the transmission device preferably comprising at least one rolling body and at least one fit contour on which the at least one rolling body can move. The case in which the transmission device comprises a rolling body and an adjustment contour is particularly advantageous, since a determined movement sequence of the at least one ejection element can be carried out by means of the configuration of the adjustment contour. By arranging differently inclined surfaces on which the rolling body moves successively, different acceleration and braking phases can be implemented, for example.

According to the invention it makes sense to use the ejection device in connection with a movable furniture part which is designed as a folding door or folding-sliding door, so that the folding door or folding-sliding door comprises at least a first door leaf and a second door leaf, and that at least one ejection element is made for ejecting the folding door or the folding-sliding door from a position closed, in which the at least two door leaves are arranged in a common closing plane, to an open position, in which the at least two door leaves enclose an angle not equal to 180° with respect to one another.

In this case, it is also expedient if the ejection device has at least one hardware part for mounting the ejection device on the first door leaf and for the at least one ejection element to bear on the at least one hardware part. fitting, and that the at least one ejection element has at least one device for coupling the at least one ejection element to the second door leaf at least when the folding or folding-sliding door is unfolded from the closed to the closed position. open position.

Thus, according to the invention, it is ensured that the ejection or unfolding of the folding or folding-sliding door takes place between the two door leaves and not between the folding or folding-sliding door and the furniture body. This has two essential advantages: On the one hand, a shorter lever length is required if the at least one ejector element is designed as a lever. As a result, a smaller construction form can be achieved compared to the state of the art. On the other hand, the opening angle between the door leaves is always the same during ejection, regardless of the dimensions of the door leaves.

It is not strictly necessary for the unlocking device to come into contact with the furniture body for unlocking. Rather, it can also be provided that the unlocking device is connected or can be connected to the first door leaf and the second door leaf at least during the unlocking of the at least one locking device, so that the unlocking device can detect a relative change in the angle of the two door leaves relative to each other during unlocking of the at least one locking device. In this way, the ejection device can be arranged at any point between the two door leaves. Otherwise care should be taken that the ejection device is arranged on the two door leaves in such a way that it has a small distance from a front surface of the furniture body.

As stated at the beginning, protection is also requested for a piece of furniture with a cabinet, at least one piece of furniture that can be moved with respect to the cabinet, at least one folding door or folding-sliding door, and at least one at least one ejection device according to the invention for ejecting at least one movable furniture part from a closed position into an open position, in which the at least one movable furniture part is designed as a folding or folding-sliding door and the body The piece of furniture has a hollow space, in particular well-shaped, for receiving the at least one folding door or folding-sliding door in a folded position.

It is also suitable in connection with the present invention in particular if a drive device is provided which is designed to automatically transfer the at least one movable furniture part from the open position to the closed position. Two cases can then be distinguished, specifically on the one hand a first case in which after the ejection the user immediately manually moves the movable furniture part back to the closed position, and on the other hand a second case in which the at least one movable furniture part is automatically transferred to the closed position. In the first case, the overpressure protection is activated according to the invention when at least one switching element is in the at least one deactivation position - at least at the beginning of the movement of the movable furniture part to the closed or overpressure position, whereby the at least one locking device cannot be unlocked. In the second case, on the contrary, it is not at all necessary to have a protection against excessive pressure, since the drive device will always move the movable furniture part to the closed position with the same force. A movement of the movable furniture part from the closed position to the overpressure position can be prevented by tailoring this force, without the need for overpressure protection for this. In other words, the present invention covers in particular the case of an "emergency closing" in the sense that a user changes his mind regarding the desire to open and wants to close the movable furniture part again immediately after ejection. or even during ejection. In this case, the overpressure protection is always active, so that the interlocking device cannot be released.

Other details and advantages of the present invention are explained in more detail below based on the description of figures with reference to the exemplary embodiments shown in the drawings. In them they show:

Figure 1 a: a perspective view of a piece of furniture with two closed folding-sliding doors, Figure 1b: the piece of furniture from Figure 1a, in which one of the folding-sliding doors has been ejected by means of a release device ejection according to the invention,

Figure 1c: the furniture of Figure 1a, in which the two folding-sliding doors adopt a folded position,

Figure 1d: the furniture of Figure 1a, in which the two folding-sliding doors are embedded in a hollow space arranged in the furniture body,

FIG. 2a: A first preferred embodiment of the ejection device according to the invention in a perspective view,

Figure 2b: The ejection device according to Figure 2a in a side view,

Figure 2c: The ejection device according to Figure 2a in a view from below, but without fitting plates, Figure 3: The ejection device according to Figure 2a in an exploded view,

FIG. 4a: The ejection device according to FIG. 2a in plan view from above, in which the ejection device is engaged,

Figure 4b: A cross-sectional view of the ejection device half according to Figure 4a showing the locking device along the sectional plane A-A,

Figure 4c: A cross-sectional view through the middle of the ejection device according to Figure 4a showing the locking device along the sectional plane B-B,

FIG. 5a: The ejection device according to the first preferred embodiment in a side view, the ejection device being in the overpressure position,

FIG. 5b: A cross-sectional view of one half of the ejection device according to the first preferred exemplary embodiment, which has the locking device along the sectional plane A-A, the ejection device being in the overpressure position,

FIG. 5c: A cross-sectional view of one half of the ejection device according to the first preferred exemplary embodiment, which has the locking device along the sectional plane B-B, the ejection device being in the overpressure position,

Figure 6a: The ejector device according to the first preferred embodiment in a side view, the ejector device being in a position immediately after unlocking, Figure 6b: A cross-sectional view of one half of the ejector device according to the first preferred embodiment showing the locking device along the section plane A-A, the ejection device being in a position immediately after unlocking, Figure 6c: a cross-sectional view of one half of the ejection device According to the first preferred exemplary embodiment, the latching device has along the section plane B-B, the ejection device being in a position immediately after unlocking, FIG. 7a: The ejection device according to the first preferred exemplary embodiment in a side view, with the ejection device in the open position after ejection by the ejection device, Figure 7b: a cross-sectional view of one half of the ejection device according to the first preferred embodiment showing the locking device along the section plane A-A, in which the ejection device is in the open position after ejection by the ejection device,

Figure 7c: A detail view of the rolling body in relation to the fit contour, with the ejector device in the open position after ejection by the ejector device, Figure 7d: A cross-sectional view of one half of the ejection device according to the first preferred exemplary embodiment, which has the locking device along the section plane B-B, the ejection device being in the open position after ejection by the ejection device,

Figure 8a: A cross-sectional view of the ejection device according to the first preferred embodiment along the sectional plane A-A, in which the ejection device is shown in a position in which the two halves of the ejection device ejecta are folded,

Figure 8b: A plan view from above of a piece of furniture with a folded folding-sliding door, Figure 9: A cross-sectional view of the ejection device according to the first preferred embodiment along the sectional plane A-A, in which the ejection device is in an intermediate position during the transfer to the closed position,

FIG. 10a: The ejection device according to the first preferred embodiment in a side view, the ejection device being in a position that it assumes in the event of a manual closing that takes place shortly after ejection before reaching the position closed,

FIG. 10b: A cross-sectional view of one half of the ejection device according to the first preferred embodiment, which has the locking device along the sectional plane A-A, the ejection device being in a position that it assumes in the case of a manual closing that takes place shortly after ejection before reaching the closed position,

FIG. 10c: A cross-sectional view of one half of the ejection device according to the first preferred embodiment, which has the locking device along the sectional plane B-B, the ejection device being in a position that it assumes in the case of a manual closing that takes place shortly after ejection before reaching the closed position,

FIG. 11: A cross-sectional view of one half of the ejection device according to the first preferred embodiment, which has the locking device along the sectional plane A-A, the ejection device being in the overpressure position, in particularly in case of a manual closure that takes place shortly after the ejection,

FIG. 12a: A perspective cross-sectional view of the half of the ejector device according to the first preferred embodiment that has the locking device, in which the ejector device is locked and the at least one switching element is locked. is in the activated position,

FIG. 12b: A perspective cross-sectional view of the half of the ejector device according to the first preferred embodiment that has the locking device, in which the ejector device is locked and the at least one switching element is locked. is in the deactivated position, Figure 13a: a side view of a second preferred embodiment of the ejector device, in which the ejector device is in the locked closed position,

a Figure 13b: A side view of a second preferred embodiment of the ejection device, the ejection device being in the overpressure position,

a Figure 13c: A side view of a second preferred embodiment of the ejector device, in which the ejector device is in a position immediately after unlocking, a Figure 14a: A perspective view of a section through another piece of furniture with a folding lid and an ejection device according to the first preferred embodiment,

a Figure 14b: another perspective view of the piece of furniture in figure 14a,

a Figure 15a: a side elevation of a third preferred embodiment of the ejection device with the folding-sliding door closed,

a Figure 15b: A plan view from above of the ejection device according to Figure 15a without the folding-sliding door and the front side of the cabinet,

a Figure 15c: a partial view from the side along the section plane C-C (see figure 15b), a Figure 15d: a partial view from the side along the section plane D-D (see figure 15b), a Figure 15e: a partial view from the side along the section plane E-E (see figure 15b), a Figure 15f: a partial view from the side along the section plane F-F (see figure 15b), a Figure 16a: a side view of the third preferred embodiment of the ejection device, in which the folding-sliding door is moved to the overpressure position,

a Figure 16b: A plan view from above of the ejection device according to Figure 16a without the folding-sliding door and the front side of the cabinet,

a Figure 16c: a partial view from the side along the section plane C-C (see figure 16b), a Figure 16d: a partial view from the side along the section plane D-D (see figure 16b), a Figure 16e: a partial view from the side along the section plane E-E (see figure 16b), a Figure 16f: a partial view from the side along the section plane F-F (see figure 16b), a Figure 17a: a side elevation of the third preferred embodiment of the ejection device, in which the folding-sliding door assumes the position of maximum overpressure,

a Figure 17b: A plan view from above of the ejection device according to Figure 17a without the folding-sliding door and the front side of the cabinet,

a Figure 17c: a partial view from the side along the section plane C-C (see figure 17b), a Figure 17d: a partial view from the side along the section plane D-D (see figure 17b), a Figure 17e: a partial view from the side along the section plane E-E (see figure 17b), a Figure 17f: a partial view from the side along the section plane F-F (see figure 17b), a Figure 18a: A side view of the third preferred embodiment of the ejection device immediately after the locking device has been unlocked,

a Figure 18b: A plan view from above of the ejection device according to Figure 18a without the folding-sliding door and the front side of the furniture body,

a Figure 18c: a partial view from the side along the section plane C-C (see figure 18b), a Figure 18d: a partial view from the side along the section plane D-D (see figure 18b), a Figure 18e: a partial view from the side along the section plane E-E (see figure 18b), a Figure 18f: a partial view from the side along the section plane F-F (see figure 18b), a Figure 19a: A side elevation of the third preferred embodiment of the ejection device during ejection of the folding-sliding door in a first intermediate position,

a Figure 19b: A plan view from above of the ejection device according to Figure 19a without the folding-sliding door and the front side of the cabinet,

a Figure 19c: a partial view from the side along the section plane C-C (see figure 19b), a Figure 19d: a partial view from the side along the section plane D-D (see figure 19b), a Figure 19e: a partial view from the side along the section plane E-E (see figure 19b), a Figure 19f: a partial view from the side along the section plane F-F (see figure 19b), Figure 20a: A side view of the third preferred embodiment of the ejection device during ejection of the folding-sliding door in a second intermediate position,

a Figure 20b: A plan view from above of the ejection device according to Figure 20a without the folding-sliding door and the front side of the cabinet,

Figure 20c: a partial view from the side along the section plane C-C (see figure 20b), a Figure 20d: a partial view from the side along the section plane D-D (see figure 20b), a Figure 20e: a partial view from the side along the section plane E-E (see figure 20b), a Figure 20f: a partial view from the side along the section plane F-F (see figure 20b), a Figure 21a: A side view of the third preferred embodiment of the ejection device during ejection of the folding-sliding door in a third intermediate position with the ejection force accumulator discharged,

a Figure 21b: A plan view from above of the ejection device according to Figure 21a without the folding-sliding door and the front side of the cabinet,

a Figure 21c: a partial view from the side along the section plane CC (see figure 21 b), a Figure 21d: a partial view from the side along the section plane DD (see figure 21b) , a Figure 21e: a partial view from the side along the section plane EE (see figure 21b), a Figure 21f: a partial view from the side along the section plane FF (see figure 21b) , Figure 22a: A side view of the third preferred embodiment of the ejection device during further manual movement of the folding-sliding door in the direction of the parallel position of the door leaves of the folding-sliding door after the ejection process in a first intermediate position,

FIG. 22b: A plan view from above of the ejection device according to FIG. 22a without the folding-sliding door and the front side of the cabinet,

Figure 22c: a partial view from the side along the section plane C-C (see figure 22b), Figure 22d: a partial view from the side along the section plane D-D (see figure 22b), Figure 22e: a partial view from the side along the section plane E-E (see figure 22b), Figure 22f: a partial view from the side along the section plane F-F (see figure 22b), Figure 23a: A side view of the third preferred embodiment of the ejection device during further manual movement of the folding-sliding door in the direction of the parallel position of the door leaves of the folding-sliding door after the process of ejection in a second intermediate position,

FIG. 23b: A plan view from above of the ejection device according to FIG. 23a without the folding-sliding door and the front side of the cabinet,

Figure 23c: a partial view from the side along the section plane C-C (see figure 23b), Figure 23d: a partial view from the side along the section plane D-D (see figure 23b), Figure 23e: a partial view from the side along the section plane E-E (see figure 23b), Figure 23f: a partial view from the side along the section plane F-F (see figure 23b), Figure 24a: A side view of the third preferred embodiment of the ejection device during further manual movement of the folding-sliding door in the direction of the parallel position of the folding-sliding door leaves after the ejection process in a third intermediate position, FIG. 24b: a plan view from above of the ejection device according to FIG. 24a without the folding-sliding door and the front side of the cabinet,

Figure 24c: a partial view from the side along the section plane C-C (see figure 24b), Figure 24d: a partial view from the side along the section plane D-D (see figure 24b), Figure 24e: a partial view from the side along the section plane E-E (see figure 24b), Figure 24f: a partial view from the side along the section plane F-F (see figure 24b), Figure 25a: A side view of the third preferred embodiment of the ejection device during the further manual movement of the folding-sliding door in the direction of the parallel position of the door leaves of the folding-sliding door after the process of ejection in a fourth intermediate position,

FIG. 25b: A plan view from above of the ejection device according to FIG. 25a without the folding-sliding door and the front side of the cabinet,

Figure 25c: a partial view from the side along the section plane C-C (see figure 25b), Figure 25d: a partial view from the side along the section plane D-D (see figure 25b), Figure 25e: a partial view from the side along the section plane E-E (see figure 25b), Figure 25f: a partial view from the side along the section plane F-F (see figure 25b), Figure 26a: A side view of the third preferred embodiment of the ejection device during a manual reversal of the movement of the folding-sliding door during or immediately after the ejection in the direction of the closed position/overpressure of the folding-sliding door in a first intermediate position,

FIG. 26b: A plan view from above of the ejection device according to FIG. 26a without the folding-sliding door and the front side of the cabinet,

Figure 26c: a partial view from the side along the section plane C-C (see figure 26b), Figure 26d: a partial view from the side along the section plane D-D (see figure 26b), Figure 26e: a partial view from the side along the section plane E-E (see figure 26b), Figure 26f: a partial view from the side along the section plane F-F (see figure 26b), Figure 27a: A side view of the third preferred embodiment of the ejection device during a manual reversal of the movement of the folding-sliding door during or immediately after the ejection in the direction of the closed/overpressure position of the folding-sliding door in a second intermediate position,

FIG. 27b: A plan view from above of the ejection device according to FIG. 27a without the folding-sliding door and the front side of the cabinet,

Figure 27c: a partial view from the side along the section plane C-C (see figure 27b), Figure 27d: a partial view from the side along the section plane D-D (see figure 27b), Figure 27e: a partial view from the side along the section plane E-E (see figure 27b), Figure 27f: a partial view from the side along the section plane F-F (see figure 27b), Figure 28a: A side view of the third preferred embodiment of the ejection device during a manual reversal of the movement of the folding-sliding door during or immediately after the ejection in the direction of the closed position/overpressure of the folding-sliding door in a third intermediate position,

FIG. 28b: A plan view from above of the ejection device according to FIG. 28a without the folding-sliding door and the front side of the cabinet,

Figure 28c: a partial view from the side along the section plane CC (see figure 28b), Figure 28d: a partial view from the side along the section plane DD (see figure 28b), Figure 28e: a partial view from the side along the section plane EE (see Figure 28b), Figure 28f: A partial view from the side along the sectional plane FF (see Figure 28b), Figure 29a: A perspective view of the third preferred embodiment of the ejection device, Figure 29b: A view Exploded view of the third preferred embodiment of the ejection device,

Figure 30a: a perspective view of the switch shaft 276 together with the elements arranged thereon, and

Figure 30b: An exploded view of the building group of Figure 30a.

Figures 1a to 1d show a piece of furniture 25 with a piece of furniture 15. A part of this piece of furniture 15 can be covered on the outside by means of two folding-sliding doors 2, each of which comprises a first door leaf 19 and a second door panel 20, the two door panels 19 and 20 being hingedly connected to one another. In the case of Figure 1a, the two folding-sliding doors 2 are in a closed position, in which the two door leaves 19 and 20 are arranged in a common closing plane. In the case of FIG. 1b, one of the two folding-sliding doors 2 (the right folding-sliding door 2) is in an open position, in which the two door leaves 19 and 20 enclose an angle 21 with respect to one another. which is not equal to 180°. Compared to this, the two door leaves 19 and 20 of the other folding-sliding door 2 form an angle 21 of 180° with respect to one another. In the case of Figures 1c and 1d, the two folding-sliding doors 2 assume a folded position, the folding-sliding doors 2 being arranged outside the cabinet 15 in Figure 1c and inside the cabinet 15 in Figure 1d. For the arrangement of the sliding-folding doors 2 within the cabinet 15, cavities 26 are provided which are made in the shape of a pit.

At least in that part of the piece of furniture 25 that can be covered by means of the folding-sliding doors 2, a kitchen 28 is arranged with a lower cupboard that includes drawers and upper cupboards, for example.

One of the two door leaves 19 and 20 of the sliding-folding doors 2 is arranged hingedly on a support. This door leaf is provided with the reference symbol 19. The two door leaves 19 and 20 are also hingedly connected to each other via hinges 30 (see FIG. 1c). The door leaf 20 which is not hingedly connected to the support is connected to a running body 31 which is mounted so as to be movable along a rail 32. The rail 32 is arranged in the upper area of the furniture body fifteen.

The three spatial directions are provided with the reference symbols 6 (depth), 34 (width) and 33 (height).

Between the two door leaves 19 and 20 of the folding-sliding doors 2, an ejection device 1 is in each case arranged for ejecting the folding-sliding doors 2 from a closed position, in which the two door leaves 19 and 20 they are arranged in a common closing plane, in an open position in which the two door leaves 19 and 20 enclose an angle 21 other than 180° with respect to one another. These ejection devices 1 partially interact with a front surface 29 of the furniture body 15.

A first preferred embodiment of the ejection device 1 is described in FIGS. 2a to 12b. A second embodiment of the ejection device 101 is described in FIGS. 13a to 13c. A third exemplary embodiment of the ejection device 201 is described in Figures 15a to 28f.

Figures 2a to 2c show the ejection device 1 according to the first preferred exemplary embodiment in the locked closed position, a fragment of the folding-sliding door or door panels 19 and 20 being hingedly connected to one another being represented schematically. via the middle hinges 30. The hinge pin of the middle hinges 30 is provided with the reference symbol 35. The ejection device 1 is connected to the door leaves 19 and 20 on one side via a fitting part 40 (see Figure 2c) and on the other hand through fittings 24.

A first part of the ejection device 1 is arranged on one door leaf 19 and a second part of the ejection device 1 is arranged on the other door leaf 20 .

The first part of the ejection device 1 comprises an ejection force accumulator 4 with two compression springs, each of which is arranged in a stabilization device 38 (see also FIG. 3). Stabilization devices 38 prevent the compression springs from bending during compression. The stabilization devices 38 are respectively arranged between a base 37 and a slider 36. The base 37 is fixedly connected to the door leaf 19 via a base plate 40. The slider 36 is movable relative to the base plate 40, and in particular under the influence on the one hand of the energy stored in the compression springs of the ejection force accumulator 4 and on the other hand under the influence of a manual action on the ejection device 1 by means of a folding of door leaves 19 and 20.

The slider 36 has a first end, on which the stabilization devices 38 bear, and a second, opposite end, on which two rolling bodies 17 are mounted, rotatable about an axis 41 (see also FIG. 3). Each of the rolling bodies 17 bears on a setting contour 18 which is rotatably mounted about a pivot axis 47.

In order to prevent the slider 36 from lifting off the fitting 40, a further roller 52 is arranged on the axis 41 between the two rolling bodies 17, which is mounted so that it can be moved in a limited manner in a groove 53 of a component. 42. The component 42 is arranged between the two fitting contours 18.

The adjustment contours 18 and the rolling body 17 form a transmission device that is arranged between the ejection force accumulator 4 and two ejection elements 3. The ejection elements 3 are coupled in their movement to the adjustment contours 18 of forced way. This means that when the adjustment contours 18 rotate around the axis of rotation 47 the ejection elements 3 also perform such rotation.

In addition, the ejection elements 3 each have at least one device for coupling the ejection elements 3 to one of the door leaves 19 or 20. In particular, this coupling device consists of an end section 23, preferably in the form which is mounted slidably in a slot 54 (see also FIG. 3) of a fitting part 24. By rotating the ejector elements 3 around the pivot axis 47, the door leaf 20 is swung then around the axis of rotation 35 with respect to the door leaf 19. And vice versa, a relative movement of the door leaves 19 and 20 relative to one another also produces a rotational movement of the ejection elements 3.

In summary, the transmission device serves, among other things, to convert a linear movement of the slider 36 into a tilting movement of the ejection elements 3 and vice versa. When the linear movement of the slider 36 becomes a tilting movement of the ejection elements 3, the ejection force accumulator 4 is discharged. And vice versa, ie when a relative movement of the door leaves 19 and 20 or of the fitting parts 40 and 24 is converted into a linear movement of the slider 36, the ejection force accumulator 4 is charged.

By shaping the adjustment contours 18, the movement of the ejection elements 3 can also be precisely controlled. In this way, for example, an acceleration phase can be achieved at the beginning of the ejection process. This can then be followed by a braking phase before the ejection force accumulator 4 is charged.

In order to achieve a compact construction of the ejection device 1, recesses 46 are made in the fitting part 49 and the door leaf 19 (see also FIG. 3), which can accommodate at least part of the fitting contours 18 in the course of its tilting.

The ejection device 1 further comprises a locking device 5 for locking the ejection element 3 against the force applied by the ejection force accumulator 4. The locking device 5 further comprises a lever arm 16 which is mounted on the slider 36 so that it can tilt around an axis of rotation 57.

The locking device 5 is pressed by a clamping device in the direction of the fitting part 40 (see also the following figures). The clamping device comprises a spring 68 which is directly or indirectly connected to the fitting part 40 on one side, this connection being possible through the base 37, as in the case shown. On the other hand, the spring 68 is connected to the end of a lever 67, a further cross bolt acting on a projection 45 of the latching device 5 being arranged at the end of the lever as well. The spring 68 is designed as a tension spring and It has a slight pre-tension. If the latch 5 is tilted away from the fitting 40, then the spring 68 is more stressed and exerts a greater force in the direction of the fitting 40. As a result, the latch 5 has a tendency to move in the direction of the fitting part 40 in any position. Alternatively or additionally, the clamping device can also be formed by an axial spring in the vicinity of the axis of rotation 57.

In the case shown, the lever arm 16 is made in two parts (see also FIG. 3). The lever arm 16 could also be made in one piece. At one free end of the lever arm 16, a retaining projection 44 is formed, which can be positively and positively engaged on a bolt 43. The bolt 43 is arranged fixed on the base plate 40. Instead of the solution shown, any other locking solution is also conceivable.

Two unlocking devices 10 are provided to unlock the locking device 5. These are mounted on the lever arm 16 so that they can rotate about an axis of rotation 48. In addition, the unlocking devices 10 have a free end that can come into contact with each other. contact with the front side 29 of the furniture body 15 via a contact point 51 (see also the following figures).

The ejection device 1 further comprises, as an essential element, a switching element 7 which is operatively connected to the locking device 5 and has an activated position in which the locking device 5 can be unlocked and a deactivated position in which the Locking device 5 cannot be unlocked, so that the switching element 7 during ejection of the movable furniture part 2 can be moved from the closed position to the open position in the deactivation position.

In particular, the switching element 7 is designed in the illustrated case as a slider, which is fixed linearly displaceable on the base plate 40 (see in particular FIGS. 2c and 3).

Another coupling device is provided, through which the switching element 7 can be indirectly coupled to the ejection elements 3, the other coupling device comprising a driving lug 8 and a stop contour 9 in the form of an elongated hole , in which the driving bead 8 is movably mounted. In the present case, the driving heel 8 is made as a pin, which is mounted on the slider 36, on which the ejection force accumulator 4 is applied. The elongated hole 9 is made in the switching element 7. However , the slider 36 can also comprise the elongated hole 9 and the switching element 7 can comprise the driving lug 8. In addition, the other coupling device can also be made completely different.

The unlocking devices 10 additionally each have a first coupling device 11 for coupling the unlocking devices 10 to the switching element 7. In particular, these first coupling devices 11 respectively comprise a contact point 12, contacting the first coupling devices 11 with the switching element 7 in the activated position via the contact points 12 and being made without contact with the switching element 7 in the deactivated position.

In order to move the switching element 7 from the deactivated position back to the activated position after the folding-sliding door 2 has been ejected from the closed position to the open position, a return device is provided. In this case, the return device comprises a time element, through which the switching element 7 is moved into the activation position with a time delay. The time element comprises a force accumulator 13 and a damper 14 that opposes the force accumulator 13. In particular, it can be seen from FIG. 2c that the force accumulator 13 comprises two compression springs, which are arranged between a first end of the switching element 7 and the base plate 40. The damper 14, which is designed as a fluid damper with a piston-cylinder unit, is arranged between a second end of the switching element 7 and the component 39. This means that the slider 7 is actuated by the force accumulator 13 on the one hand and by the damper 14 on the other hand.

In the locked rest position, the ejection device 1 strikes a balance between the force accumulator 13 and the damper 14 in such a way that the force accumulator 13 is unloaded and the damper 14 is compressed inward. This position is represented in Figures 4a to 4c and in Figure 12a. The locking device 5 is locked in this position. The unlocking device 10 makes contact on the one hand via the contact point 51 with a front side 29 of the furniture body 15 and on the other hand via the contact point 12 with the switching element 7 (see FIG. 4c).

If the ejection device 1 or the movable furniture part 2 connected to it moves into an overpressure position arranged behind the closed position in the closing direction 6 (see Figures 5a to 5c), then the unlocking device 10 it unlocks the locking device 5 by exerting force on the connecting shaft 48. In this way, the retaining projection 44 gains enough clearance relative to the retaining bolt 44 to cancel the force-fitted connection.

A user then releases the ejection device 1 or the movable furniture part 2 attached to it (see Figures 6a to 6c). As a result, the force stored in the ejection force accumulator 4 can escape, whereby the slider 36 performs a linear movement. The switching element 7 also moves via the drive heel 8, which hits a first stop surface 58 of the elongated hole 9 after a short time. As a result, the switching element 7 is withdrawn from the unlocking device 10 and from the contact point 12 of the coupling device 11 (see in particular Figure 6c). At the same time, the force accumulator 13 of the time element, acting on the switching element 7, is compressed and the damper 14 is relaxed.

The slider 36 then exerts a force on the adjustment contours 18 and thus on the ejection elements 3 via the rolling bodies 17. The adjustment contours 18 and the ejection elements 3 are thus swiveled around the axis of rotation 47. Via the coupling devices 23, 24 of the ejection elements 3, the fitting parts 24 or the door leaf 19 or 20 attached to them are swiveled around the axis of rotation 35, starting from a position at in which the door leaves 19 and 20 are arranged in a common closing plane, to a position in which the door leaves 19 and 20 enclose an angle other than 180° with respect to each other (see in particular Figure 6a).

The ejection movement ends when the ejection force accumulator 4 is completely discharged. The position that the ejection device 1 assumes at this moment is represented in Figures 7a to 7d. As can be seen in particular from FIG. 7c, the rolling body 17 is in this position at a minimum 60 that is encompassed by the adjustment contour 18. In general, the user would now like to open the movable furniture part 2 further. To do this, it exerts a force 61 on the mobile furniture part 2. If the movable furniture part 2 is a folding-sliding door, by exerting force the folding-sliding door is moved in the direction of a position in which the folding-sliding door is folded. In this way, the ejection elements 3 or the adjustment contours 18 attached to them are pivoted further around the axis of rotation 47. Since the adjustment contours 18 are adjusted on the rolling bodies 17 of the slider 36, the slider 36 it moves back in the direction of the starting position which the slider 36 has assumed in the locked state. As a result, the ejection force accumulator 4 is next recharged.

During this loading movement, the recoil device becomes effective. This means that the force stored in the force accumulator 13 is released again and the switching element 7 is moved back to the original activation position against the action of the damper 14. The overpressure protection that was activated during the ejection of the movable furniture part 2 from the closed position to the open position, it is deactivated again in the course of a loading movement of the ejection device 1.

Figures 8a and 8b show the folded state of the ejection device 1 or of the mobile furniture part 2. Starting from this position, the movable furniture part 2 can now be moved into a hollow space 26 inside the furniture body 15. In this position, the ejection device 1 assumes an almost locked state. This state occurs because the ejection device 1 has to be stored in such a way that it occupies as little space as possible. This means that the unlocking device 10 is actually in a position in which the locking device 5 would be unlocked. This is due to the fact that the unlocking device 10 is "squeezed" between the switching element 7 and the door leaf 20. If the folding-sliding door 2 is now unfolded again, then the locking device 5 becomes to lock immediately. A movement of the slider 36 is specifically blocked by the adjustment contours 18.

Figure 9 shows the ejection device 1 in an intermediate position during the transfer to the closed position from the folded position according to Figure 8b. It can be seen that the locking device 5 is locked. A force 62 is exerted on the ejection device 1 or the door leaves 19 and 20 connected to it. According to a preferred embodiment of the invention, this force 62 is provided by a drive device 30 which is made to automatically transfer the movable furniture part 2 to the closed position. The drive device 30 can be, for example, the central hinges that connect the door leaves 19 and 20 to one another. However, a separate drive device can also be provided as an alternative or as a supplement.

In addition to this, another drive device 49 can also be provided, which transfers the door package from the hollow space 26 to a position outside the hollow space 26. The drive device 30 can also be divided into two parts, so that a first part causes the door package to unfold from the folded position to an intermediate position and a second part causes a transfer from the intermediate position to the final closed position. Since the force provided by the drive device 30 can be precisely adjusted, the movable furniture part 2 will always move to the closed position at the same speed. In this case, an overpressure protection is not necessary, since the force can be calculated in such a way that the movable furniture part, starting from the closed position, no longer moves into the overpressure position.

However, it can also be the case that the ejection device 1 has been triggered unintentionally, or that a user changes his mind immediately after unlocking or during ejection and wants to transfer the movable furniture part 2 again immediately. to the closed position. This situation is also called an "emergency shutdown." This scenario is represented in Figures 10a to 10c, 11 and 12b. A user thus exerts a force 63 on the ejection device 1 manually. The ejection force accumulator 4 is immediately recharged when the rolling bodies 17 retract in the opposite direction in the setting contours 18, and the latching device 5 moves in the direction of the latching position. However, due to the time element of the recoil device the overpressure protection is still active in this situation. This means that the switching element 7 is in the deactivated position. Therefore, the unlocking device 10 is made without contact with the switching element 7. If the user doses his force 63 with a high value, the movable furniture part 2 moves beyond the closed position to the locked position. overpressure (see Figure 11). However, since the unlocking device 10 cannot be supported on the switching element 7, the locking device 5 remains locked. This means that the locking device 5 cannot be unlocked. Only after a certain time does the switching element 7 return to the activated position. However, the user generally no longer exerts any force on the ejection device 1. The ejection device 1 remains locked.

Figures 13a to 13c show a second preferred embodiment of the ejection device 101, and specifically in the locked closed position (Figure 13a), in the overpressure position (Figure 13b) and in a position immediately after unlocking (Figure 13c ).

An essential difference in this exemplary embodiment is that when the locking device 5 is unlocked, the unlocking device 110 is connected to the first door leaf 19 and the second door leaf 20, or to the two fitting parts 40 and 24, so that the unlocking device 110 can detect a relative change in the angle of the two door leaves 19 and 20 relative to one another during the unlocking of the locking device 5. In this case, for example, it can be a cable 55, than in the closed position is tensioned between an end 69 of the release device 110 and a connection point 56 on the fitting part 24. If the ejection device 101 now moves from the closed position to the overpressure position, the release device 110 is moves in the direction of the locking device 5. Since the unlocking device 110 is supported simultaneously on the switching element 7 described in detail in connection with the first exemplary embodiment, the locking device 5 is unlocked. Therefore, it is no longer necessary to contact the body of the furniture 15 to produce an unlocking. This has the great advantage that the ejection device 101 can be arranged at any point on the mobile furniture part 2.

Figures 14a and 14b show a piece of furniture 27 in the form of a kitchen top unit, which can be closed from the outside by means of a folding lid 22. The folding lid 22 consists of two partial lids 65 and 66 which are connected to one another hinged via a central hinge 30. In addition, the partial lid 66 is hingedly connected to the furniture body 64 of the furniture 27. The partial lid 65 is moved via an adjustment unit 50, which is also arranged on the furniture body 64 and comprises a power accumulator. An ejection device 1 may be arranged between the partial covers 65 and 66 to eject the folding cover 22 from the coplanar closed position to a deployed open position. Alternatively, of course, the ejection devices 101 or 201 can also be used (see the following figures).

In addition, the ejection device according to the invention can also be used with other pieces of furniture, for example drawers.

A third preferred embodiment of the ejection device 201 is shown in Figures 15a to 28f. In terms of basic principle, this ejection device 201 functions like the ejection device 1. However, there are a number of differences that concern in particular to the switching element 207 and the components connected to it.

The ejection device 201 is arranged between the door leaves 19 and 20 of a folding-sliding door 2. Furthermore, the ejection device 201 is connected on one side to the door leaf 19 via a fitting part 240 and on the other hand to door leaf 20 via a fitting part 224. A reverse arrangement is also possible for door leaves 19 and 20.

In Figure 15a the closed position of the folding-sliding door 2 is represented. In this position, the ejection device 201 contacts the front side 29 of the furniture body 15 (see Figures 1a to 1d) through a device 15d, the unlocking device 210 comprises a contact lever 283 which is connected to the ejection device 201 via two pivotally mounted clamping levers 284 and 279 . The clamping levers 284 and 279 enclose an acute angle with respect to each other. The clamping levers 284 and 279 can pivot in the ejector 201 around the pivot points 285 and 278. The contact lever 283 is connected to the clamping levers 284 and 279 via the pivot points 282 and 281 The distance between the pivot points 281 and 282 is less than the distance between the pivot points 278 and 285. A spring 280 is tensioned between the clamping levers 284 and 279. This spring 280 ensures that the clamping levers 284 and 279 assume the smallest possible distance from each other, whereby the contact lever 283 is pushed away from the ejector 201 and in the closed position is fixed on the front side 29 of the furniture body 15. The contact point of the contact lever 283 with the front side 29 of the furniture body 15 is provided with the reference symbol 251. The end of the contact lever 283 on which the contact point 251 is arranged is opposite the end of the contact lever 283 in which pivot points 282 and 281 are provided.

The unlocking device 210 has a further lever 211 which is connected to the clamping lever 284 via a pivot point 286 on the one hand and has a free lever end on the other hand. This lever-free end is made hook-shaped and has a U-shaped contact point 212.

The ejection device 201 further comprises a switching element 207 which is mounted to rotate about a switching axis 276. The switching element 207 is designed to be rotationally symmetrical. It also includes hook-shaped retention projections 277 that can interact with the lever 211 of the unlocking device 110. This situation is represented in Figure 15d: the lever 211 contacts the switching element 207 through the contact point 212. This is the activation position of the switching element 207. The lever 211 represents a first coupling device for coupling the unlocking device 210 to the switching device 207.

In this embodiment of the ejection device 201, the unlocking device 205 is designed as a swivel-mounted lever 216, which is mounted on the ejector device 201 so that it can swivel about the axis of rotation 257. The device The locking protrusion 205 comprises a detent projection 244. This can engage in a corresponding detent projection 287, as shown in FIG. 15e. The detent projection 287 is made on a component 208, which is mounted rotatably on the ejector device 201 about an axis of rotation 242. The component 208 is additionally mounted on a rolling body 217 around the axis of rotation 241. This rolling body 217 can therefore move in a circular path around the pivot point 242.

The rolling body 217 is driven by an ejection force accumulator 204 via a slider 236. Furthermore, the rolling body 217 contacts a setting contour 218, which can be seen particularly well in FIG. 15f. The adjustment contour 218 has a minimum 260, as well as two adjacent maxima 289 and 288. The adjustment contour 218 is mounted on the ejector 201 so that it can rotate about an axis of rotation 247.

A fork-shaped lever-like ejector element 203 is rotatably connected to the adjustment contour 218. If the adjustment contour 218 moves about the axis of rotation 247, then the ejector element 203 also moves necessarily, and vice versa.

The adjusting contour 218 and the rolling body 217 together form a transmission device which is arranged between the ejection force accumulator 204 and the ejection element 203.

The locking device 205 is connected to the switching element 207 via a mechanism that is represented in particular in Figure 15c. A control contour 215 is arranged rotatably attached to the switching axis 276 of the switching element 207. This is also made rotationally symmetrical. A push button 214 can be supported on the control contour 215, which is connected to the ejector device 201 via two rocker levers 271 and 274. On the one hand, the rocker lever 271 is mounted on the ejector device 201 rotatable about an axis pivot lever 272. On the other hand, the rocker lever 271 is connected to the push button 214 via a pivot point 270. Correspondingly, on the one hand the rocker lever 274 is mounted on the ejector device 201 so that it can be rotated about an axis pivot 273. On the other hand, the rocker lever 274 is connected to the push button 214 via a pivot point 275. By means of a spring 213 which is arranged between the ejector device 201 and the push button 214, the push button 214 is pressed in the direction of the control contour 215. The push button 214 is also movably coupled to the latching device 205.

If a user now exerts a force on the folding-sliding door 2 in the closing direction 6, so that the folding-sliding door 2 moves from the closed position to an overpressure position arranged behind the closed position in the direction 6, then the contact lever 283 of the unlocking device 210 moves in the direction of the ejection device 201 (see Figures 16a to 16f, in particular Figure 16d). As a result, then the coupling lever 211 is pulled in the opposite direction, that is, in the direction of the front side 29 of the furniture body 15. Because the lever 211 engages on the switching element 207, the switching element switching 207 is rotated about the axis of rotation 276.

This rotational movement of the switching element 207 simultaneously causes a simultaneous rotation of the control contour 215 (see FIG. 16c), since the switching element 207 and the control contour 215 are arranged on a common axis of rotation 276 . In the starting position according to FIG. 15c, the tip of the pushbutton 214 was in a first holding cavity 291. If the control contour 215 is now rotated, then the control contour 215 displaces the pushbutton 214 from the holding cavity. latch 291 along an edge 248. This causes the pusher 214 to move away from the control contour 215.

The movement of the push button 214 then causes the lever 216 of the locking device 205 to tilt about the axis of rotation 257, whereby the lever 216 moves away from the coupling component 208 and the locking is released.

In Figures 17a to 17f the position of maximum overpressure is represented. The lever 216 of the latching device 205 has completely released the component 208. At the same time, the tip of the push button 214, which contacts the control contour 215, has moved over the flank 248 into a second holding cavity 290. The push button 214 is held stable in this retaining cavity 290. As a result, the lever 216 of the latching device 205 is also held stable in the unlocked position.

If the user now lets go of the folding-sliding door 2, then the component 208 can be swiveled around the axis of rotation 242 under the influence of the force stored in the ejection force accumulator 204 (see FIGS. 18a to 18f). The contact lever 283 and the coupling lever 211 of the unlocking device 210 coupled to it move under the influence of the spring 280 back to their original position. However, as can be seen in a comparison of Figures 15d and 18d, the switching element 207 now assumes a position in which the engagement lever 211 does not engage on the switching element 207. In other words, the switching device The coupling 211 is made at the contact point 212 without contact with the switching element 207. The switching element 207 is in a deactivated position in which the locking device 205 cannot be unlocked.

As can be deduced from the following sequence of Figures 19a to 19f, 20a to 20f and 21a to 21f, the rolling body 217 moves along the adjustment contour 218 in the direction of the minimum 260 by the released force that is stored in the ejection force accumulator 204. In this way, the adjusting contour 218 is swiveled around the axis of rotation 247. This tilting movement is continued in the ejection element 203, which then tilts the door leaf 20 relative to the door leaf 19. As a result, the movable furniture part 2 is transferred from the closed position to open position.

As a comparison of Figures 19e, 20e and 21e shows, during the rotational movement around the axis of rotation 242, the component 208 comes into contact via a projection 292 with another rotary part 209, which is also arranged on the axis 276. The swivel 209 is also made rotationally symmetrical and has three wings 258 that can come into contact with the projection 292 of the component 208. The swivel 209 with the wings 258 represents a stop contour that can be dragged by the component 208. Therefore, component 208 can also be understood as a drag stub. The rotational movement of the swivel 209 is extended by a rotational movement of the switching element 207 and the control contour 215. Taken together, the driving heel 208 and the stop contour 209 thus form another coupling device, through which the switching element 207 is coupled to the ejection element 203.

Due to the rotational movement of the control contour 215, the pushbutton 214 again moves out of the retaining cavity 290. The switching element 207 was moved further by the rotation of the rotating part 209, but not so much that the switching element switch 207 will again be in an activated position. Rather, the switching element 207 is in another deactivated position.

In Figures 21a to 21f that position of the ejection device 201 is shown in which the ejection force accumulator 204 is completely discharged. The rolling body 217 is located at the minimum 260 of the fit contour 218.

Starting from this position, a user now normally exerts a force 61 to continue the folding of the folding-sliding door 2. Figures 22a to 22f, 23a to 23f, 24a to 24f and 25a to 25f show various intermediate positions during this movement of folding of the folding-sliding door 2.

The adjustment contour 218 is now actively moved by the user around the axis of rotation 247. In this way, the rolling body 217 is pushed out of the minimum 260 again and moves back in the direction of the original position. As a result, the ejection force accumulator 204 is charged again.

At the same time, the component 208 swings back around the axis of rotation 242. Since the push button 214 is no longer in the retaining cavity 290, the spring 213 again has the possibility to move the push button 214 and thus the lever 216 of the locking device 205 in the direction of the starting position. At the same time, the pushbutton 214 also rotates the control contour 215 and thus the switching element 207 until the tip of the pushbutton 214 is again arranged in the original holding cavity 291 of the control contour 215 and the switching element. switch 207 is in the on position (see Figures 25c and 25d). The locking device 205 could now be unlocked again.

Normally, starting from the position according to Figures 25a to 25f, the folding-sliding door 2 is further folded and possibly stowed in a hollow space 26 in the furniture body 15 (see Figures 1a to 1d).

Next, the folding-sliding door 2 is transferred back to the original closed position. Thus, the position of the components of the locking device 205 no longer changes.

Figures 26a to 26f, 27a to 27f and 28a to 28f show a different motion scenario. Specifically, during or immediately after the ejection of the mobile furniture part 2, the user decides to actively move the furniture part 2 back to the original closed position ("emergency closing"). For this, the user exerts a force 63 on the furniture part 2 in the direction of the closed position. In this way, the rolling body 217 on the adjusting contour 218 is pushed back to the original position, that is, along the section of the control contour 218 on which the rolling body 217 has moved until it stops. reverse the movement. The ejection force accumulator 204 is immediately recharged.

The component 208 is swiveled around the axis of rotation 242 again. Under the influence of the spring 213, the pushbutton 214 further rotates the control contour 215 and thus the switching element 207. However, when it reaches closed position (see Figures 27a to 27f), the switching element 207 is still in a deactivated position in which the coupling lever 211 is not yet engaged on the switching element 207.

In the event of a further movement in the direction of the overpressure position, the switching element 207 continues to rotate so that it is then in the activated position. However, at the same time, the engagement lever 211 of the unlocking device 210 is pressed in the opposite direction, so that the engagement lever 211 cannot be initially engaged on the switching element 207. Due to the movement of the engagement part cabinet 2 from the closed position to the overpressure position during emergency closing no immediate release of the locking device 205 takes place. Only when the The user releases the furniture part 2, the unlocking device 210 moves back to the original position (see Figure 15d) and the coupling lever 211 can be engaged on the switching element 207.

From Figures 29a and 29b it appears that some components of the ejection device 201 can be made in two parts to increase stability. This is the case, for example, with the adjustment contour 218, the component 208, the lever 216 of the locking device 205, the push button 214, the clamping levers 279 and 284 and the control contour 215.

It can also be seen that the ejector element 203 is connected at a first end with the fitting contour 218 and with the second ends 223, on which the rolling bodies are arranged, to the fitting part 224. The rolling bodies are mounted slidably in the grooves 254.

Finally, it should also be noted that in this exemplary embodiment a stabilization device 238 is also provided to prevent the ejection force accumulator 204 from bending.

In FIGS. 30a and 30b it can be clearly seen that the control contour 215, the switching element 207, as well as the rotary part 209 are arranged in rotation on a common switching axis 276. This means that the rotation of one of them these components will cause the other components to rotate.

The detent recesses 290 and 291 and the flanks 248 of the control contour 215, the detent projections 277 of the switching element 207 and the wings 258 of the rotary part 209 are also clearly visible.

Claims (10)

Ejection device (1,101,201) for a movable furniture part (2, 22), with at least one ejection element (3, 203) for ejecting the movable furniture part (2, 22) from a closed position to an open position, in which the mobile furniture part (2) is realized as a folding door or as a folding-sliding door comprising at least a first door leaf (19) and a second door leaf (20), and the at least one ejection element (3, 203) is designed to eject the folding door or the folding-sliding door (2) from a closed position, in which the at least two door leaves (19, 20) are arranged in a common closing plane, to an open position, in which the at least two door leaves (19, 20) enclose an angle (21) with respect to each other that is not equal to 180°, in which the ejection device (1, 101, 201) has at least one piece of hardware (40, 240) for mounting the ejection device (1, 101, 201) on the first door leaf (19) and the at least one ejection element (3 , 203) rests on the at least one piece of fitting (40, 240), and the at least one ejection element (3, 203) has at least one device (23, 24, 223, 224) for coupling the at least one ejection element (3, 203) to the second door leaf (20) at least during folding of the folding door or folding-sliding door (2) from the closed position to the open position, at least one ejection force accumulator (4, 204) for applying force of the at least one ejection element (3, 203) during ejection of the movable furniture part (2, 22) from the closed position to the open position, at least one locking device (5, 205) for locking the at least one ejection element (3, 203) against the force applied by the at least one ejection force accumulator (4, 204), in which the at least one locking device (5, 205) has at least one unlocking device (10, 110, 210) comprising at least a first coupling device (11, 211) for coupling the at least one unlocking device (10, 110, 210) with at least one switching element (7, 207), in which the at least one locking device (5, 205) can be unlocked by overpressure of the movable furniture part (2, 22) at a overpressure position arranged behind the closed position in the closing direction (6), characterized in that the at least one switching element (7, 207) is operatively connected to the at least one locking device (5, 205) and has at least one activation position, in which the at least one locking device (5, 205) can be unlocked, and at least one deactivation position, in which the at least one locking device (5, 205) cannot be unlocked, in which during the ejection of the furniture part (2, 22) movable from the closed position to the open position and/or by unlocking the at least one locking device (5, 205), the al At least one switching element (7, 207) can be moved to the at least one deactivation position, in which the at least one first coupling device (11, 211) of the at least one unlocking device (10, 110, 210) has at least one contact point (12, 212), in which the at least one first coupling device (11, 211) contacts at least one switching element (7, 207) in the at least one activating position via the at least one contact point (12, 212) and at least in the at least one contact point (12, 212) is non-contact with at least one switching element (7, 207) in the at least a deactivation position, in which a further coupling device (8, 9, 208, 209) is provided, via which the at least one switching element (7, 207) can be directly or indirectly coupled to the at least one switching element (3, 203), and in which at least one return device (13, 14, 213, 214, 215) is provided, by means of which the at least one switching element (7, 207) after ejection of the furniture part (2, 22) movable from the closed position to the open position or of the unlocking of the at least one locking device (5, 205) can move from the at least one deactivation position to the at least one position activation. Ejection device (1, 101, 201) according to claim 1, in which the switching element (7, 207) is mounted so that it can be moved linearly and/or rotatably. An ejection device (1, 101, 201) according to claim 1 or 2, in which the other coupling device (8, 9, 208, 209) comprises a driving bead (8, 208) and a stop contour ( 9, 209), in which particularly preferably the stop contour (9) is designed as an elongated hole in which the drive lug (8) is movably mounted. Ejection device (1, 101, 201) according to one of Claims 1 to 3, in which the at least one return device (13, 14, 213, 214, 215) comprises a time element, by means of which after the ejection of the movable furniture part (2, 22) from the closed position to the open position, or the unlocking of the at least one locking device (5, 205), the at least one switching element (7, 207 ) can move with a time delay from the at least one deactivation position to the at least one activation position, wherein the time element preferably comprises at least one force accumulator (13) and at least one damper (14) that opposes the action of at least one accumulator of force (13). Ejection device (1, 101, 201) according to one of claims 1 to 4, in which the at least one return device (13, 14, 213, 214, 215) comprises a detection device for detecting a relative position of the furniture part (2, 22) movable relative to a furniture body (15) and the at least one switching element (7, 207) can be moved by the at least one return device (13, 14, 213, 214, 215) from the at least one deactivation position to the at least one activation position as a function of a predetermined relative position detected by the detection device. Ejection device (1, 101, 201) according to one of Claims 1 to 5, in which the at least one locking device (5, 205) - it comprises at least one lever arm (16, 216) that is pivotally mounted, and/or - can be nailed with positive union of form and force. Ejection device (1, 101, 201) according to one of Claims 1 to 6, in which a transmission device (17, 18, 217, 218) is provided, which is arranged between the at least one ejection force accumulator (4, 204) and the at least one ejection element (3, 203), in which the transmission device preferably comprises at least one rolling body (17, 217) and at least one adjustment contour (18, 218). in which the at least one rolling body (17, 217) can move. Ejection device (101) according to one of Claims 1 to 7, in which the at least one locking device (5) has an unlocking device (110), by means of which, when the ejection device (101 ) is mounted, the at least one locking device (5) can be unlocked by applying pressure to the folding door or folding-sliding door (2), preferably in the area where the at least two door leaves (19, 20) are hingedly connected to each other, and the unlocking device (110) is connected or can be connected to the first door leaf (19) and to the second door leaf (20) at least during the unlocking of the at least one device. (5), so that the unlocking device (110) can detect a relative change in the angle of the two door leaves (19, 20) relative to one another during unlocking of the at least one locking device (5) . 9. Furniture (25, 27) with a furniture body (15, 64), at least one furniture part (2, 22) that can be moved relative to the furniture body (15, 64) and at least one device ejection device (1) for ejecting the at least one movable furniture part (2, 22) from a closed position into an open position according to one of claims 1 to 8, in which the at least one furniture part ( 2) mobile is designed as a folding door or folding-sliding door and the furniture body (15) has a hollow space (26), in particular in the shape of a well, for receiving the at least one folding door or folding-sliding door (2) in a folded position. A piece of furniture (25) according to claim 9, in which a drive device (30) is provided, which is designed to automatically transfer the at least one movable piece of furniture (2) from the open position to the closed position.