阅读说明：本技术 用于折叠门的推出设备 (Push-out device for folding doors ) 是由 F·科尔维斯 M·拉普 D·加布尔 于 2018-05-04 设计创作，主要内容包括：用于可运动地设置在家具体(40)上的折叠门(3)的推出设备(1),其中,折叠门(3)至少具有第一门扇(3a)和第二门扇(3b),其中,所述门扇(3a、3b)相互铰接连接,所述推出设备(1)具有至少一个推出元件(5),以用于将折叠门(3)从关闭位置开启到打开位置中,在所述关闭位置中,至少两个门扇(3a、3b)设置在一个共同的关闭平面(B)中,在所述打开位置中,所述至少两个门扇(3a、3b)彼此成不等于180°的角度,所述推出设备(1)具有至少一个第一配件(1a),以用于将推出设备(1)装配在第一门扇(3a)上,并且所述至少一个推出元件(5)支撑在所述至少一个第一配件(1a)上,其中,所述至少一个推出元件(5)为了使第二门扇(3b)从关闭位置运动到打开位置中而通过至少一个剪式机构(10)构成,其中,所述剪式机构(10)具有至少两个剪式杠杆(10a、10b)并且通过铰接连接可折合地支承在第一和第二门扇(3a、3b)之间,其中,所述铰接连接通过至少一个中间杠杆(11)构成,并且所述中间杠杆(11)与第一剪式杠杆(10a)和/或第二剪式杠杆(10b)铰接连接。(Push-out device (1) for a folding door (3) movably arranged on a furniture carcass (40), wherein the folding door (3) has at least a first door leaf (3a) and a second door leaf (3B), wherein the door leaves (3a, 3B) are hingedly connected to one another, wherein the push-out device (1) has at least one push-out element (5) for opening the folding door (3) from a closed position, in which at least two door leaves (3a, 3B) are arranged in a common closing plane (B), into an open position, in which the at least two door leaves (3a, 3B) are at an angle different from one another by 180 °, wherein the push-out device (1) has at least one first fitting (1a) for fitting the push-out device (1) on the first door leaf (3a), and wherein the at least one push-out element (5) is supported on the at least one first fitting (1a), wherein the at least one ejection element (5) is formed by at least one scissor mechanism (10) for moving the second door leaf (3b) from the closed position into the open position, wherein the scissor mechanism (10) has at least two scissor levers (10a, 10b) and is foldably mounted between the first and second door leaves (3a, 3b) by means of a hinged connection, wherein the hinged connection is formed by at least one intermediate lever (11), and the intermediate lever (11) is hingedly connected to the first scissor lever (10a) and/or the second scissor lever (10 b).)

1. Push-out device (1) for a folding door (3) movably arranged on a furniture body (40), wherein,

the folding door (3) at least comprises a first door leaf (3a) and a second door leaf (3b),

wherein the door leaves (3a, 3b) are hingedly connected to each other, the push-out device (1) having at least one push-out element (5) for opening the folding door (3) from a closed position, in which the at least two door leaves (3a, 3b) are arranged in a common closing plane (E), into an open position, in which the at least two door leaves (3a, 3b) are at an angle different from 180 DEG to each other,

the push-out device (1) has at least one first fitting (1a) for mounting the push-out device (1) on a first door leaf (3a), and the at least one push-out element (5) is supported on the at least one first fitting (1a),

characterized in that the at least one ejection element (5) is formed by at least one scissor mechanism (10) for moving the second door leaf (3b) from the closed position into the open position, wherein the scissor mechanism (10) has at least two scissor levers (10a, 10b) and is mounted between the first and second door leaves (3a, 3b) in a foldable manner by means of a hinged connection, characterized in that the hinged connection is formed by at least one intermediate lever (11), and the intermediate lever (11) is connected in a hinged manner to the first scissor lever (10a) and/or to the second scissor lever (10 b).

2. A push-out device according to claim 1, characterised in that the scissor mechanism (10) is formed by at least a first scissor lever (10a) and a second scissor lever (10b), wherein the first and second scissor levers (10a, 10b) are connected to each other, preferably in the central region, by a hinged connection.

3. A push-out device according to claim 1 or 2, characterised in that the first scissor lever (10a) is movably mounted at a first end (E1) on the first fitting part (1a) along a guide (12), while a second end (E2) of the first scissor lever (10a) is hingedly connected to the second fitting part (1 b).

4. A push-out device according to one of claims 1 to 3, characterised in that the second scissor lever (10b) can be brought into contact with a control cam (13) arranged on the first fitting (1a) via a contact section (15).

5. A push-out device according to claim 4, characterised in that a deflection of the second scissor lever (10b) can be established by a contact between the contact section (15) and the control cam (13), wherein by a deflection of the second scissor lever (10b) the first scissor lever (10a) can be guided together on the basis of the articulated connection between the respective scissor levers (10a, 10 b).

6. A push-out apparatus as claimed in one of the claims 1 to 5, characterized in that an energy store (14) arranged on the scissor mechanism (10) assists the movement of the scissor mechanism (10) as soon as the folding door (3) is placed in the open position from the closed position.

7. A push-out device according to claim 6, characterised in that the energy store (14) is arranged acting on the fitting between the first and second scissor levers (10a, 10b) and/or between the first and/or second scissor levers (10a, 10b) and the intermediate lever (11).

8. Ejection apparatus according to claim 6 or 7, wherein the energy store (14) is formed by a spring, preferably a compression spring.

9. Ejection apparatus according to one of claims 6 to 8, wherein, by the action of the energy store (14), a contact section (15) of the second scissor lever (10b) can be pressed against the control cam (13), wherein the contact section (15) can be moved along the control cam (13).

10. Push-out device according to one of claims 6 to 9, characterized in that the energy store is supported on an end section (16) of the second scissor lever (10b) and presses a, preferably movable, contact section (15) which is movably supported on the second scissor lever (10b) in the opposite direction to the end section (16).

11. A push-out device according to one of claims 4 to 10, characterised in that the control cam (13) has an opening section (OA) and a clamping Section (SA), wherein the contact section (15), preferably formed by a rolling body rotatably mounted on the second scissor lever (10b), is movable along the opening section (OA) and the clamping Section (SA).

12. A push-out device as claimed in one of the claims 6 to 11, characterized in that the latching device (16) is provided for latching the energy store (14), wherein the energy store (14) can be tensioned by the interaction of the control cam (13) and the contact section (15) and the energy store is latched in the tensioned state by the latching device (16), whereby unloading of the energy store (14) can be prevented.

13. Ejector apparatus according to claim 12, wherein a trigger device (17) is provided, which unlocks the blocking device (16) into the trigger position, so that the energy store (14) can be changed from the loaded state to the unloaded state.

14. A push-out device according to claim 13, wherein the trigger means (17) is movable from a substantially coplanar position of the door leaves (3a, 3b) into the trigger position upon pressing of the trigger means (17).

15. A push-out device as claimed in claim 14, characterised in that the triggering means (17) can be moved into the triggering position when the triggering means (17) is pressed against the furniture body (40).

16. A push-out device as claimed in one of the claims 12 to 15, characterized in that the at least one latching means (16) can be unlatched in the assembled push-out device (1) by applying pressure on the folding door (3), preferably in the region where the door leaves (3a, 3b) are hingedly connected to each other.

17. Furniture (100) comprising

-a furniture body (40),

-at least one folding door (3) having at least two door leaves (3a, 3b) hingedly connected to each other, wherein the folding door (3) can take up at least a closed position in which the at least two door leaves (3a, 3b) are arranged in one common closing plane and an open position in which the at least two door leaves (3a, 3b) are at an angle other than 180 ° to each other, and

-at least one push-out device (1) according to one of claims 1 to 17.

18. Piece of furniture according to claim 17, wherein the at least one push-out device (1) is arranged on a side of one of the two door leaves (3a, 3b) facing the furniture carcass (40).

19. Piece of furniture according to one of claims 17 or 18, wherein the furniture body (40) has a receiving well (33) formed by a cavity for receiving the at least one folding door (3) in the folded pulled-in position.

Technical Field

The invention relates to a push-out device having the features of the preamble of claim 1.

Furthermore, a piece of furniture having the features of the preamble of claim 17 is to be provided.

Background

Such ejection devices, also called deployment aids, are already known and are shown, for example, in austrian patent applications a 50049/2017, JP 2014029103A, JP 2012001916 a and WO 2017000006 a 1. These ejection devices are required as deployment aids for moving folding doors, which can also be designed as folding sliding doors, from their closed position into the open position. The user of the folding door or folding sliding door does not have to automatically carry out the entire movement of the folding door or folding sliding door from the closed position into the open position. The ejection device is activated and causes the ejection of the folding door or the folding sliding door from the closed position in the direction of the open position, for example by overpressure of the folding door or the folding sliding door in the closed position in the direction of the furniture body located behind it. The push-out device is therefore considered as a deployment aid arranged between the door leaves. Since the ejection device is arranged in an invisible area behind the door leaf and the door leaf has to be moved from the closed position into the open position, only a small space is provided in which the ejection device can be present. Since the door leaves which are movable relative to one another can be moved from a coplanar position (closed position) into a substantially parallel position (open position), in which only little space is still available between the door leaves which are arranged movably relative to one another, it is necessary in the prior art to incorporate recesses into the door leaves in order to be able to accommodate the movable components of the ejection device if the ejection device has to compensate for the movement of the door leaves between the open position and the closed position. The deflection levers that are necessary for the deployment aids to move the door leaves relative to one another make sufficient space between the door leaves in the closed position. However, as soon as the door leaves are moved in the direction of the parallel position or are substantially in the parallel position, the deflection lever must be present in the confined space between the door leaves without collision. In case of a collision, a parallel position is not possible. A compact arrangement of the door leaf guided into the open position is therefore also not ensured, so that the door leaf can be buried in a receiving shaft, for example. The space required for embedding the deflection lever in the door leaf must be produced by machining methods, such as milling or punching, at the location required for this purpose. This involves additional work steps and is reflected in increased labor expenditure and higher production costs. Furthermore, the door leaf weakens at the location of the milled hole in terms of its material thickness, which can lead to damage at this location on the folding door over a longer period of time. Furthermore, the material thickness of the door leaf must be sufficiently high to enable the recess as a whole; thin-walled folding doors are therefore not usable.

Disclosure of Invention

The object of the present invention is to avoid the aforementioned disadvantages and to provide a push-out device which is improved over the prior art.

Furthermore, an improved piece of furniture is specified, compared to the prior art, comprising such a push-out device.

This is achieved in the ejection device according to the invention by the features of the characterizing part of claim 1 and in the improved furniture by the features of claim 17.

If the at least one ejection element is formed by at least one scissor mechanism for moving the second door leaf from the closed position into the open position, wherein the scissor mechanism is supported in a foldable manner between the first and second door leaf, no space, for example a recess or a recess, is required in the door leaf in order to provide the space required for the inwardly pivoted lever or other movable component of the ejection device when moving into the closed position. The scissor mechanisms can compensate for the movement independently and fold together between the door leaves. A pushing-out device is thus provided which, in the parallel position of the door leaves (open position), compactly finds a space between the door leaves which are movable relative to one another. The structure of each lever is independent of the size of the door leaf. For example, thinner material can also be used for the door leaf, since no recess in the door leaf is required.

If the scissor mechanism is formed by at least one first scissor lever and at least one second scissor lever, wherein the first and second scissor levers are connected to each other (preferably in the central region) by a hinged connection, two scissor levers are provided, which can receive the force when opening and closing the folding door. It is furthermore achieved that, for example, a scissor lever can be actuated, which scissor lever can automatically bring about a movement of a second scissor lever. A compact drive system is created in order to be able to assist the opening of the folding door. The resulting forces are also better distributed to the scissor levers, which results in a more stable design of the system.

When the articulated connection is formed by at least one intermediate lever, a virtual pivot point is established on the scissor mechanism. By means of the intermediate lever, a more compact design is achieved than in the case of a simple hinge with better force transmission. Since the rotation point is virtual, it can play when opening and when closing the folding door. It is provided that the intermediate lever is connected to the first scissor lever and/or the second scissor lever in an articulated manner. The force during opening and closing of the door leaf is transmitted via the articulated connection of the intermediate lever to the first and/or second scissor lever. The door leaves are furthermore positioned relative to one another and stably supported.

When the first scissor lever is mounted on the first fitting so as to be movable along the guide on the first end and the second end of the first lever is connected to the second fitting in an articulated manner, the first scissor lever can be moved along the guide when opening and closing the folding door, which is reflected in a compact design. The scissor mechanism requires a part of the degrees of freedom given by the guide means in order to be able to fold when moving between the open and closed positions.

When the second scissor lever can be brought into contact with a control cam provided on the first fitting via the contact section, the contact section can be moved along the control cam once the scissor mechanism is in the corresponding position. The second scissor lever can be deflected by contact between the contact section and the control cam, wherein the first scissor lever can be guided together by the deflection of the second scissor lever on the basis of the articulated connection between the scissor levers. The control cam thus not only moves the scissor mechanism, but also provides the degree of freedom required by the scissor mechanism for folding and unfolding. By means of the control cam, it is possible to position the door leaves in a desired position relative to one another. The control cam thus defines the stroke of the scissor mechanism and also the stroke of the door leaves to each other.

It has proven advantageous here if an energy store arranged on the scissor mechanism assists the movement of the scissor mechanism as soon as the folding door is moved from the closed position into the open position. The force for moving the door leaf out of the closed position no longer has to be applied by the user. Although the user introduces a movement, in such a way that he for example taps the door or squeezes it to a certain position; however, the opening of the door leaf is then still automated to some extent.

In this case, it can be provided that the folding door is moved completely from the closed position into the open position, or else only up to a certain region, and finally is completely opened by the user. It is thus possible, for example, to move the folding door by means of the ejection device only over half the distance between the closed position and the open position, while the remaining distance into the open position is carried out manually by the user. The energy store can be loaded by manual actuation, so that it can be unloaded, for example, during a renewed opening process.

The direct introduction of force in the scissor mechanism takes place when the energy store is arranged acting on the fitting between the first and second scissor levers and/or between the first and/or second scissor lever and the intermediate lever. Furthermore, the energy store is mounted compactly, which is reflected in the space-saving design of the ejection device. The introduction of force is furthermore effected directly and indirectly via further levers or other objects. Avoiding other components that may be worn or damaged, for example. It can be provided that the energy store is formed by a spring, preferably a compression spring.

When, by the action of the energy store, the contact section of the second scissor lever can be pressed against the control cam, wherein the contact section can be displaced along the control cam, the second scissor lever is moved toward the control cam as a result of the force introduction of the energy store. By this movement and the contact with the first scissor lever, the forced scissor mechanism converts this force introduction of the energy store to the control cam and to the first scissor lever into a movement. Conversely, the energy store is charged in a certain operating position of the ejection device by the scissor mechanism moving towards the control cam. The unloading and loading of the energy store is thus effected by the contact of the control cam and the contact section on the second scissor lever.

When the energy store is mounted on an end section of the second scissor lever and presses a (preferably movable) contact section mounted movably on the second scissor lever in the opposite direction to the end section, the second scissor lever is variable in terms of its length, which results in a direct conversion of the movement of the scissor mechanism and an unloading and loading of the energy store when the length of the second scissor lever is changed. If the length of the second scissor lever and/or the length of the energy store resting on the second scissor lever changes on account of the unloading of the energy store, the scissor mechanism is put into operation and an auxiliary movement of the door leaf out of the closed position is generated.

If the control cam has an opening section and a clamping section, wherein the contact section (which can preferably be formed by a rolling body rotatably mounted by the second scissor lever) is moved along the opening section and the clamping section, a pushing-out movement of the scissor mechanism is set up by the contact section moving along the opening section of the control cam, wherein the folding door is opened. If the folding door continues to be moved, for example manually by the user, the control cam moves into the clamping section and charges the energy store via the contact section for a further opening process.

In this case, it has proven advantageous to provide a locking device for locking the energy store, wherein the energy store can be tensioned by the interaction of the control cam and the contact section and the energy store is locked in the tensioned state by the locking device, whereby unloading of the energy store can be prevented. The unloading and loading of the energy store can thus take place in the relationship of the relative positions between the contact section and the control cam. In the loaded state, the energy store can be locked, which prevents an automatic unloading of the energy store. The energy storage can be triggered and unloaded if desired by the user. Inadvertent unloading of the energy store is precluded.

If a triggering device is provided, which, in the triggered position, unlocks the locking device, so that the energy store can be changed from the loaded state to the unloaded state, the folding door is forced to open by means of the triggering device. The triggering device may be, for example, a connecting element which connects the ejection device at least temporarily to the piece of furniture or to another component of the furniture carcass, for example, if the user presses against a folding door. However, the triggering device can also be a push button or the like, which can be actuated directly by the user. It is therefore possible to mount the triggering device concealed on the piece of furniture. However, the triggering device can also be arranged on the piece of furniture.

When the triggering device can be moved from the substantially coplanar position of the door leaf into the triggering position upon pressing the triggering device, the triggering device can then be arranged in a concealed position on the furniture. By pressing against the door leaf and over-pressing its coplanar position, the triggering means are activated and the folding door is forced to open. This is achieved in that the trigger device can be moved into the trigger position when the trigger device is pressed against the furniture body.

Furthermore, a concealed position of the triggering device is achieved in that the at least one locking device can be unlocked in the assembled ejection device by applying pressure to the folding door (preferably in the region in which the door leaves are hingedly connected to one another).

Advantageously, an item of furniture is shown, comprising a furniture body, at least one folding door with door leaves connected to one another at least in a double-hinged manner, and at least one ejection device, wherein the folding door or the folding sliding door can assume at least one closed position, in which the at least two door leaves are arranged in a common closed plane, and at least one open position, in which the at least two door leaves are at an angle of not 180 ° to one another.

Advantageously, the at least one ejection device is arranged on a side of one of the two door leaves facing the furniture carcass. A hidden construction of the ejection device is thus achieved. The ejection device is arranged so as to be invisible from the outside of the piece of furniture.

It has also proven to be advantageous if the furniture carcass has a receiving opening formed by a cavity for receiving the at least one folding door in the folded retracted position. The folding door placed in the open position can thus be buried laterally on the furniture body and does not project into the space. This results in a space-saving piece of furniture, the folding door of which is always folded away and out of the way.

Drawings

Further details and advantages of the invention are explained in more detail below with reference to the exemplary embodiments shown in the figures by way of a description of the figures. In which is shown:

figure 1a shows a piece of furniture comprising a stowage well and a folding door;

fig. 1b shows the push-out device on a folding door;

fig. 2 shows an exploded view of the ejector device;

figures 3a, 3b show the closed position of the folding door;

4-7 show different views and positions of the ejector device when the at least one energy store is unloaded and moved in the direction of the open position;

8-11 show different views and positions of the ejection device when the at least one energy store is loaded and moved in the direction of the open position; and

fig. 12 to 15 show different views and positions of the ejection device when it is retracted in the direction of the closed position.

Detailed Description

Fig. 1a shows a piece of furniture 100, comprising a receiving opening 33 which is arranged laterally on the piece of furniture 100 and in which the folding door 3 can be inserted in the folded-in state of the door leaves 3a, 3 b. Fig. 1a shows the closed position of the folding door 3. The folding door 3 can also be designed as a folding sliding door, as shown in fig. 1 a. For this purpose, the folding door rests on the upper and/or lower edge of the folding door 3 by means of longitudinal guides, which are not visible in fig. 1 a. In addition to the push-out device 1 on the door gap between the door leaves 3a, 3b, a hinge 50 is also provided on the gap in order to enable a deflection of the door leaves 3a, 3b between the open position and the closed position. The receiving well 33 is formed by the home body 40 or is provided on the home body 40. The non-visible part of the furniture carcass 40 extends parallel to the ejection device 1, so that contact with the ejection device 1 can be established if required. This component of the furniture body 40 can be, for example, a rack bottom, a cover plate or another component of the furniture body 40.

Fig. 1b shows the push-out device 1 from fig. 1a in more detail. The triggering device 17, which is movably arranged on the ejection device 1, comes into contact with a component of the furniture carcass 40 when required. For simplicity, the furniture body 40 is not shown in fig. 1 b. The triggering device 17 is designed as a contact part which, when the door leaves 3a, 3b are pressed against one another, comes into contact with the furniture carcass 40 from the coplanar position shown in fig. 1b to a component of the furniture carcass 40 and then triggers. The push-out device is thus activated and the movement of the door leaves 3a, 3b relative to each other starts. The ejection device 1 has a first fitting part 1a and a second fitting part 1 b. The scissor mechanism 10 connects the first and second fittings 1a, 1 b. Upon activation by the activation device 17, the scissor mechanism 10 is set in motion by the at least one energy store 14, which causes the door leaves 3a, 3b to open.

Fig. 2 shows an exploded view of the ejection device 1, which comprises a first fitting part 1a and a second fitting part 1 b. A plurality of individual components are located on the first fitting part 1 a. The first fitting has a base element 52, which is connected to the first door leaf 3a by a fastening section. The base element can be connected to the first door leaf 3a, for example, by means of screws or similar fastening means. This is not shown in fig. 2 for simplicity.

At least one guide 12 is located on the base element 52 for receiving a guide element 12b on the first scissor lever 10a, which is arranged at the first end E1 of the first scissor lever 10 a. The second end E2 of the first scissor lever 10a is connected to the second fitting 1 b. The guide element 12b is rotatably connected to the first scissor lever by means of a pin 12a and is longitudinally displaceable along the guide 12 on the base element 52.

The first scissor lever 10a is connected to the second scissor lever 10b via at least one intermediate lever 11. The second scissor lever has a contact section 15 which can be brought into contact with a control cam 13 on the base element 52. The contact portion 15 (embodied as a rolling body) is therefore supported at least temporarily on the control cam 13. At the opposite end of the second scissor lever 10b is a bearing 53a, which is mounted on at least one energy store 14 on the second scissor lever 10b by means of a screw 53 b. The energy store 14 acts on the slide 55 via the displacement device 54. The slide 55 additionally serves to receive the contact section 15. If the contact section 15 is moved by the control cam 13, said movement is transmitted to the energy store 14 by means of the slide 55 and vice versa. A locking device 16 is provided for locking the slider 55. The locking device is mounted on the second scissor lever 10b by means of a bolt 53b in a rotationally movable manner. The blocking device 16 is triggered or released by a trigger device 17, which is likewise mounted movably on the second scissor lever 10 b. A corresponding recess 55b on the locking device 16 is placed in connection here by means of the projection 55 a.

The pressure-sensitive protection 60, which is in operative connection with the control device 61, prevents premature triggering of the ejection device 1. A renewed pushing out of the folding doors 3 can occur if, for example, the opening process from the closed position into the open position is interrupted by the user and the folding doors 3 are pressed back into the coplanar position. This is prevented by the pressure protection 60 and the control device 61. The pressure protection device is connected to the slide 55 and releases the slide only when a defined opening of the door should occur.

Fig. 3a shows the closed position of the folding door 3, in which the door leaves 3a, 3b are in a coplanar position with each other. The energy store 14 behind the locking device 16 is tensioned. The triggering device 17 is spaced apart relative to the furniture body 40. The locking device 16 is therefore also in the locked state. The energy storage 14 cannot be unloaded. The contact section 15 of the second scissor lever 10b is therefore also at the beginning of the control cam 13. The position of the contact section 15 relative to the control cam 13 is maintained at the beginning of the opening section OA on the basis of the latched energy store 14. The opening section OA extends over at least half the stroke of the control cam 13 and passes into the clamping section SA.

Fig. 3b shows a bottom view of the trigger device 17, which is in engagement with the corresponding pull-in 55a by means of the projection 55 b. The pull-in portion 55a is located on the locking device 16. The blocking device 16 holds the energy store 14 in the tensioned position.

Fig. 4 shows the triggering of the triggering device 17. The force FB exerted by the user acts on the door leaves 3a, 3b, which are not shown in fig. 4. By overextension from the coplanar position, the triggering device 17 is pressed against the component of the furniture body 40. A reaction force FG is generated on the trigger device 17 by the force of the user FB. The projection 55b of the trigger device is therefore pulled out of the pull-in 55a of the locking device 16. The locking device 16 is now in the unlocked state. This can be done as shown in fig. 4 by means of a component of the furniture body 40.

But also by a direct or indirect connection, for example between the triggering device 17 and, for example, the second door leaf 3b or the second fitting 1 b. This connection can be, for example, a tensioned bowden cable or the like, which, when the door leaf is pressed out of the coplanar position, triggers the triggering device 17. It is therefore not always necessary to establish direct contact with the furniture carcass 40 in order to ensure triggering of the ejection device 1. The connection of the triggering device 17 to the region of the ejection device 1 that is movable relative thereto also provides the possibility of triggering.

Fig. 5 shows the unlocked locking device 16. The energy store 14 now acts on the contact section 15, which moves along the opening section OA of the control cam 13 and the scissor mechanism 10 is also set in motion by the connection to the intermediate lever 11. The second scissor lever 10b moves the first scissor lever 10a via an intermediate lever 11, which rests against the second scissor lever 10b at a hinge point G1. The first scissor lever 10a is connected to a guide 12 on the first fitting 1a via a guide element 12 b. The ejection device 1 is thus moved from the coplanar position in the direction of the open position by means of the energy store 14, the hinge point G1, the intermediate lever 11 and the first scissor lever 10 a. The movement takes place around a rotational axis 51.

Fig. 6 shows another position between the closed position and the open position of the push-out device 1. The energy store 14 continues to be unloaded, and the second scissor lever 10b moves the first scissor lever 10a along the guide 12 via the first articulation point G1 and the second articulation point G2 and the intermediate lever 11 arranged therebetween. The contact section 15 moves along the control cam 13. The scissor mechanism 10 is thus supported by the base body 6.

Fig. 7 shows an opening angle of approximately 90 ° of the ejection device 1. For the sake of simplicity, the first and second door leaves 3a, 3b are not plotted, but are now likewise at an angle to one another equal to approximately 90 °. The energy store 14 continues to be unloaded until the contact section 15 reaches the end of the opening section OA of the control cam 13. If the contact section 15 is at the end of the opening section OA and therefore at the transition of the clamping section SA, the energy store 14 is completely unloaded.

The scissor mechanism 10 then no longer automatically influences the further movement on the basis of the force of the energy store 14. The further movement from this position into the fully open position of the ejection device 1 can be effected, for example, by a furniture drive or now also manually by the user.

Fig. 8 shows how the scissor mechanism 10 responds when the second fitting 1b is further deflected to load the energy store 14. The energy store 14 is loaded via the contact section 15, which is now located in the clamping section SA. The angle between the first fitting part 1a and the second fitting part 1b is further reduced by the furniture drive or by manual actuation by the user. Positively guided, the contact section 15 moves along the clamping section SA on the control cam 13, which results in a tensioning of the energy store 14. Parallel to this, the scissor mechanism 10 can be moved further in order to place the door leaves 3a, 3b, which are not shown in fig. 8 for the sake of simplicity, in their open position (parallel position). The tensioning of the energy store 14 takes place here by means of a slide 55 which is in connection with the contact section 15. The slide is now moved against the adjusting force of the energy store 14 due to the contact of the contact section with the control cam 13. Furthermore, it can be seen how the latching device 16 approaches the corresponding latching section 16b with the latching section 16 a. In this case, the latching section 16a and the corresponding latching section 16b are formed by a form-locking connection, for example by a recess comprising a bolt.

Fig. 9 shows how the folding door 3, which is not visible in fig. 9, is further positioned in the direction of the open position. The contact section 15 is located immediately before the region of the control cam 13 which is most strongly influenced in the clamping section. The energy store 14 is therefore about to reach its most strongly tensioned position. The latching device 16 is about to reach the latching point. The scissor mechanism 10 is further folded and occupies the space between the door leaves 3a, 3b, which is not visible in the figure. The small spring 59 in the deflection region of the locking device 16 initially pushes it into the locking position, in order to ensure a secure locking as soon as the locking sections 16a, 16b lie one on top of the other in a positive-locking manner or enter one another.

Fig. 10 shows the push-out device 1 about to the open position, which corresponds essentially to the parallel position of the folding doors 3, which is not visible in fig. 10. The contact section 15 is about to reach the end of the clamping section SA of the control cam 13. The energy storage 14 is almost fully tensioned. The locking device 16 is moved away from the triggering device 17 along the longitudinal axis of the energy store 14, so that triggering in the parallel position of the door leaves 3a, 3b can also not take place. In the parallel position of the door leaves 3a, 3b, there is therefore no contact of the triggering device 17 with the blocking device 16, since unlocking of the energy store 14 in the open position is not desirable.

Fig. 11 shows the parallel position of the folding door 3. The parallel position corresponds to an open position of the folding door 3 in which the first door leaf 3a is in a substantially parallel position with respect to the second door leaf 3 b. The push-out device 1 is now in the folded-in state between the door leaves 3a, 3 b. The spring store 14 is fully tensioned. The locking device 16 is closed on the basis of the respective locking section 16a, 16 b.

Depending on the distance of the triggering device 17 from the blocking device 16, triggering in the open position of the folding door 3 is not possible. The contact section 15 is in the end position of the control cam 13. In this open position, the folding door can be pushed into the push-in well 33 shown in fig. 1. This insertion into the insertion well 33 can be performed by a drive or by the force of a user. The removal from the drive shaft 33 can also be effected by means of a drive. The folding door 3 placed in the open position is thus pushed out of the push-in shaft 33 and can then be placed again in the closed position either by an additional drive or manually by the user.

The ejection device 1 is idle-like in its movement from the open position into the closed position and moves in the tensioned state from the open position into the closed position, so that renewed triggering can be ensured. In the fully folded state of the ejection device 1, the guide element 12b is at the end of the guide 12.

Fig. 12 shows the push-out device 1 in the case of a return deflection from the open position into the closed position. The guide element 12b of the first scissor lever 10a moves along the guide 12. The scissors 10 are held in the folded state, since they are locked by the locking device 16. The latching device 16 is held closed by latching sections 16a, 16 b. The energy storage 14 remains loaded. The contact section 15 moves away from the control cam 13. There is no contact between the contact section 15 and the control cam 13.

Fig. 13 shows the push-out device 1 about to reach the coplanar position (closed position) of the door leaves 3a, 3 b. The scissor mechanism 10 is always held in the folded state. It can be seen that the triggering device 17 is moved further toward the blocking device 16, so that renewed triggering can be ensured in the coplanar position. The contact portion 15 is moved away from and out of engagement with the control cam 13 at a distance.

Fig. 14 shows the push-out device 1 in a coplanar position of the folding door 3. It is emphasized that the triggering device 17 is not yet in engagement with the blocking device 16. Renewed triggering is therefore not yet possible. This is based on the pressing-over protection which should prevent the door from opening again immediately by the closing movement and beyond the coplanar position. A delay in the time of engagement of the triggering device 17 into the blocking device 16 should therefore be made. This takes place via a control device 61 which causes a time-delayed readjustment of the triggering device 17. The control device 61 can be formed, for example, in the form of a damper, a rotary damper or the like. This takes longer for the readjustment triggering device 17 than for the closing process of the door leaf 3.

Fig. 15 shows how the over-pressure protection is cancelled by the control device 61. The triggering device 17 is accordingly brought into engagement with the blocking device 16, so that renewed triggering of the ejection device can be ensured. As soon as the coplanar position of the door leaves 3a, 3b is pressed, as shown in fig. 4, a renewed triggering is initiated.