Ejection device for ejecting a furniture part that is movable relative to a furniture body

Abstract

Ejection device (1) for ejecting a furniture part (3), preferably in the form of a flap (4), door (5) or drawer (6), movable relative to a furniture body (2), from a closed position towards an open position, comprising a base body (7) and at least one ejector (8), which is movably mounted relative to the base body (7) at least between a first and a second position, wherein at least one energy storage device (9) is provided with which the at least one ejector (8) is driven to move from the first to the second position, wherein the at least one ejector (8) has at least one contact point (31) via which the at least one ejector (8) can be brought into contact with the furniture part (3) or a support device (32) associated therewith during ejection, wherein at least one magnet (33) is arranged at the at least one contact point (31), characterized in thatthat the at least one magnet (33) is connected to at least one pole plate (34), wherein the at least one magnet (33) and / or the at least one pole plate (34) has at least one raised outer contour (35).

Description

[0001] The invention relates to an ejection device for ejecting a furniture part movable relative to a furniture body, preferably in the form of a flap, door or drawer, from a closed position towards an open position, comprising a base body and at least one ejector which is movably mounted relative to the base body at least between a first and a second position, wherein at least one energy storage device is provided with which the at least one ejector can be driven to move from the first to the second position, wherein the at least one ejector has at least one contact point via which the at least one ejector can be brought into contact with the furniture part or a support device associated therewith during ejection, wherein at least one magnet is arranged at the at least one contact point.The invention further relates to a furniture fitting for the movable mounting of a furniture part relative to a furniture body or to a piece of furniture with a furniture body and at least one furniture part mounted movable relative to it.

[0002] Ejection devices according to the preamble of claim 1 are already known in the art. They have disadvantages: The at least one magnet is relatively expensive compared to the other components of the ejection device, especially if the at least one magnet is to provide a sufficiently high magnetic force to securely hold an ejected object in a desired position. Furthermore, the at least one magnet must be securely attached to the at least one contact point of the ejection device so that it does not detach from the ejection device during operation. This involves considerable manufacturing effort.

[0003] The object of the present invention is to provide an improved ejection device compared to the prior art, in which the disadvantages are at least partially eliminated, and which is characterized in particular by reduced processing effort and cost-effective manufacturing. Furthermore, an improved furniture fitting for the movable mounting of a furniture component relative to a furniture carcass, or an improved piece of furniture comprising a furniture carcass and at least one furniture component movable relative to it, is to be provided.

[0004] This problem is solved by the features of claims 1 and 17.

[0005] The ejection device is therefore provided that the at least one magnet is connected to at least one pole plate, wherein the at least one magnet and / or the at least one pole plate has at least one raised outer contour.

[0006] A pole plate is a component made of a material with high permeability, e.g., iron. Its purpose is to allow the magnetic field lines of a permanent magnet to emerge and distribute themselves in a defined shape.

[0007] This allows for the creation of a more concentrated magnetic field, enabling a smaller magnet design compared to one without a pole plate, without negatively impacting the holding force exerted by the magnet. Overall, this results in a more cost-effective solution.

[0008] The measure of providing at least one magnet and / or at least one pole plate with at least one raised outer contour results in two advantageous technical effects: Firstly, the at least one raised outer contour provides a locking contour, which can be used to hold the at least one magnet more securely at the at least one contact point of the ejection device. Secondly, the at least one raised outer contour can create a defined gap to an adjacent structure of the ejection device, which can be filled with adhesive, resulting in a high and predetermined holding force.

[0009] According to a preferred embodiment, it is provided that the at least one magnet and the at least one pole plate are arranged at least partially in a receptacle in the ejector.

[0010] In this context, it has proven advantageous that the at least one raised outer contour is designed to distance the at least one magnet and / or the at least one pole plate from an inner surface of the receptacle, wherein at least one, preferably substantially annular or substantially hollow cylindrical, gap is formed between a lateral surface of the at least one magnet and / or the at least one pole plate and the inner surface of the receptacle, preferably wherein at least one adhesive is arranged at least partially in the at least one gap, which connects the at least one magnet and / or the at least one pole plate to the inner surface of the receptacle.

[0011] Preferred embodiments, alternatively or additionally to the embodiments described above, are characterized by the fact that - which protrudes from at least one lateral surface of the at least one magnet and / or the at least one pole plate, preferably substantially transverse to a longitudinal direction of the ejection device, and / or - which has at least one raised outer contour that is formed in a bead-like and / or ring-shaped manner, at least in sections.

[0012] Alternatively or additionally, it can be advantageously provided that the at least one magnet and the at least one pole plate form a common, preferably substantially cylindrical, lateral surface.

[0013] To further enhance the effect of the at least one pole plate, at least one additional pole plate can be provided, which is connected to the at least one magnet, preferably wherein the at least one magnet is arranged sandwich-like between the at least two pole plates.

[0014] A particularly advantageous embodiment results from the fact that the at least one magnet and the at least one pole plate have surfaces facing each other, between which a gap is formed at least in some areas.

[0015] In this context, it has proven advantageous that at least one spacer is arranged on at least one of the mutually facing surfaces to form the at least one gap, and / or that at least one adhesive is arranged in the gap, at least partially, which connects the at least one magnet and the at least one pole plate.

[0016] Such a sandwich magnet with a defined adhesive gap has the advantage that it can be designed as a pre-assembled module, which simplifies and / or speeds up the production of the ejection device.

[0017] Preferred embodiments, alternatively or additionally to the embodiments described above, result from the fact that at least one soft tissue component is arranged at the at least one contact point, preferably wherein the at least one soft tissue component consists of at least one material with a first modulus of elasticity, and wherein the at least one contact point, the at least one stop and / or the at least one counter-stop consists of at least one material with a second modulus of elasticity, wherein the first modulus of elasticity is smaller than the second modulus of elasticity, and / or the at least one soft tissue component on the one hand and the at least one contact point, the at least one stop or the at least one counter-stop on the other hand are designed as a 2K injection molded part.

[0018] In this context, it has proven advantageous that the at least one soft tissue component is essentially ring-shaped, preferably wherein the at least one contact point has a corresponding receptacle in which the at least one soft tissue component is arranged or can be arranged, and / or the at least one soft tissue component surrounds the at least one magnet in an essentially ring-shaped manner, and / or the at least one soft tissue component, viewed in a longitudinal direction of the ejection device, projects beyond an end face of the at least one magnet.

[0019] Preferred embodiments, alternatively or additionally to the embodiments described above, result in the provision of at least one locking device with which the at least one ejector can be locked in the first position, wherein the locking of the at least one ejector can be released by a release movement of the at least one ejector from the first position to a release position.

[0020] In this context, it has proven advantageous to provide at least one anti-lever device which is designed to re-lock the at least one ejector if the at least one ejector does not move from the release position to the second position within a predefined time period, particularly preferably wherein the at least one anti-lever device comprises at least one locking element and at least one time delay device by which the at least one locking element can be moved with a time delay within the predefined time period into a catch position in which the at least one ejector can be re-locked, and / or the at least one ejector is movable in a first direction relative to the base body when moving from the first to the second position, and wherein the at least one ejector moves into a second position during the release movement.is movable in the opposite direction to the first direction.

[0021] Preferred embodiments, alternatively or additionally to the embodiments described above, result in the at least one ejector and / or the base body having a substantially cylindrical outer contour, and / or wherein the at least one ejector and the base body are slidably mounted against each other, and / or wherein the ejection device has only mechanical components.

[0022] Further preferred embodiments, alternatively or additionally to the embodiments described above, result from the fact that the at least one ejector is arranged in the first position to a predominant extent recessed in the base body and in the second position is extended to a predominant extent from the base body, preferably wherein at least one depth adjustment device is provided with which the length of the part of the at least one ejector recessed in the base body in the first position can be adjusted, particularly preferably in an adjustment range of up to 5 mm.

[0023] Protection is also sought for a furniture fitting for the movable storage of a furniture part relative to a furniture body or a piece of furniture with a furniture body and at least one furniture part movable relative to it, wherein the furniture fitting or the furniture comprises at least one ejection device according to the invention, preferably wherein the at least one ejection device in the case of the furniture is inserted or arranged in a bore in or on a wall of the furniture.

[0024] Further details and advantages of the invention are explained in more detail below with reference to the figures and the drawings. These show: Fig. 1 An embodiment of a piece of furniture with a furniture body, furniture parts movable on it by means of furniture fittings and ejection devices in a perspective view, Fig. 2, Fig. 3 an embodiment of a furniture fitting in the form of a pull-out guide with an ejection device in a closed position ( Fig. 2) and in an open position ( Fig. 3), each in a perspective view, Fig. 4 An embodiment of an ejection device in a perspective view, Fig. 5 An embodiment of an ejector of an ejection device in a perspective view, Fig. 6 Another embodiment of an ejector of an ejection device in a partial exploded view, Fig. 7, Fig. 8 Another embodiment of an ejector of an ejection device in a side view without a cover ( Fig. 7) and in a section view along the section plane 92 ( Fig. 8) with two enlarged sections, Fig. 9 An embodiment of a basic body of an ejection device in a perspective view with an enlarged section, Fig. 10, Fig. 11 Another embodiment of an ejector of an ejection device in a perspective view ( Fig. 10) and in a partial exploded view ( Fig. 11), each with an enlarged section, Fig. 12-14 another embodiment of an ejector of an ejection device in a partial exploded view ( Fig. 12), wherein the Fig. 13 and Fig. 14 an embodiment of a sandwich magnet of the ejector in a composite arrangement ( Fig. 13) and in an exploded view ( Fig. 14) show, Fig. 15-17 another embodiment of a sandwich magnet of an ejector in a composite arrangement ( Fig. 15), an exploded view ( Fig. 16) and in a side view ( Fig. 17) Fig. 18 Another embodiment of an ejection device in a cross-sectional view, Fig. 19 components of the in the Fig. 18 ejection device shown in an exploded view, Fig. 20, Fig. 21 further components of the in the Fig. 18 ejection device shown in an exploded view from two different viewing directions, Fig. 22-27 an excerpt from the Fig. 18 ejection devices shown in different positions, each in a cross-sectional view, Fig. 28-30 An embodiment of a fail-safe device of an ejection device in different positions and from three different viewing directions, Fig. 31-37 Figures illustrating the operation of an ejection device in a failure state, Fig. 38-40 another embodiment of an ejection device, wherein Fig. 38 a partial exploded view, Fig. 39 a first group of components of the ejection device and Fig. 40 shows an exploded view of the first group, Fig. 41-43 a second group of components of the in the Fig. Ejection device shown in 38-40 Fig. 41 an exploded view, Fig. 42 a compound position from the side and Fig. 43 shows the composite position in a cross-sectional view, Fig. 44, Fig. 45 the ones in the Fig. Ejection device shown in 38-40, wherein the ejector is in a first position ( Fig. 44) and in a second position ( Fig. 45) is arranged, each in a cross-sectional view and with enlarged sections, Fig. 46-57 an excerpt from the Fig. 38-40 ejection device shown in different positions, each in a partially broken side view, and Fig. 58-69 a section of a further embodiment of an ejection device in different positions, each in a partially broken side view.

[0025] The Fig. Figure 1 shows an embodiment of a piece of furniture 45 with a furniture body 2, furniture parts 3 which are movably mounted on it by means of furniture fittings 44 and ejection devices 1.

[0026] The furniture parts 3 can be designed, for example, as a flap 4, a door 5 or a drawer 6.

[0027] The furniture fittings 44 are intended for the movable mounting of one or more furniture parts 3 relative to the furniture carcass 2. The furniture fittings 44 can be, for example, drawer slides 73, flap fittings 74, or hinges 75.

[0028] One or more ejection devices 1 are provided, with which the furniture part(s) 3 can be ejected from a closed position towards an open position. The ejection device(s) 1 can, for example, be inserted or arranged in a bore in or on a wall 46, 47 of the furniture 45.

[0029] The ejection devices 1 can also be used in other technical fields, e.g. in the automotive sector for opening fuel tank caps or the like.

[0030] The Fig. 2, Fig. Figure 3 shows an embodiment of a furniture fitting 44 in the form of a pull-out guide 73 with an ejection device 1 in a closed position ( Fig. 2) and in an open position ( Fig. 3).

[0031] The extension guide 73 comprises a cabinet rail 78 to be connected to a furniture carcass 2, a drawer rail 76 to be connected to a furniture part 3, e.g. in the form of a drawer 6, and possibly a middle rail 77 arranged in between.

[0032] The ejection device 1 can be integrated into the extension guide 73. For example, the ejection device 1 can be arranged on the drawer rail 76 and supported on the cabinet rail 78, e.g., on a support device 32, which can be designed as a bent web. A reverse arrangement is equally possible.

[0033] The Fig. Figure 4 shows an embodiment of an ejection device 1 for ejecting a furniture part 3, movable relative to a furniture body 2, from a closed position towards an open position, comprising a base body 7 and at least one ejector 8, which is movably mounted relative to the base body 7 at least between a first and a second position, wherein at least one energy storage device 9 is provided, with which the at least one ejector 8 is driven to move from the first to the second position. Such an energy storage device 9 is, for example, in the Fig. 19 and Fig. 39 shown.

[0034] The at least one ejector 8 can be moved relative to the base body 7 in a first direction during a movement from the first to the second position and in a second direction opposite to the first direction during a triggering movement. The first and second directions are preferably arranged substantially parallel to a longitudinal direction 53 of the ejection device 1.

[0035] The at least one ejector 8 and / or the base body 7 can have a substantially cylindrical outer contour 40, 41. However, other outer contours 40, 41 can also be provided, such as a base body 7 with a substantially cuboid outer contour (see also Fig. 1, the uppermost ejection device 1).

[0036] The at least one ejector 8 and the base body 7 can be slidably mounted next to each other.

[0037] An interior space of the base body 7 can be closed off to the outside by means of a lid 26.

[0038] The Fig. Figure 5 shows an embodiment of an ejector 8 of an ejection device 1. The embodiment shown in this figure, as well as the embodiments shown in the other figures, can be combined in any way with all other embodiments.

[0039] The ejector 8 has at least one contact point 31, via which the at least one ejector 8 can be brought into contact with the furniture part 3 or a support device 32 associated with it during ejection. Furthermore, the ejector 8 has at least one stop 36, which in the second position can be brought into contact with at least one counter-stop 37 arranged on the base body 7.

[0040] It has proven advantageous that at least one soft tissue component 38, 39 is arranged at the at least one contact point 31, the at least one stop 36 and / or the at least one counter-stop 37.

[0041] The term "soft tissue component" is to be interpreted broadly in this context. A soft tissue component can also be understood as a compliant area, such as one formed by a flexible rib with an adjacent recess to accommodate the rib's partial deformation under force. The soft tissue component does not necessarily have to be made of a different material than the surrounding area. It can also be the same material, with the flexibility of the soft tissue component being achieved by adding at least one filler, e.g., glass fiber, and / or by a specific shape, e.g., a taper.

[0042] A significant advantage of using at least one soft tissue component 38, 39 is that the noise generated by the operation of the ejection device 1 can be significantly reduced. Ideally, a first soft tissue component 38 is used at the contact point 31 to reduce noise due to contact between the ejector 8 and a part to be ejected, and a soft tissue component 39 is used between the at least one stop 36 and the counter-stop 37 to reduce noise due to contact between the ejector 8 and the base body 7.

[0043] It is irrelevant whether the soft tissue component 39 is arranged at the stop 36 and / or at the counter-stop 37.

[0044] Preferably, the at least one soft tissue component 38, 39 consists of at least one material with a first modulus of elasticity, wherein the at least one contact point 31, the at least one stop 36 and / or the at least one counter-stop 37 consists of at least one material with a second modulus of elasticity, wherein the first modulus of elasticity is smaller than the second modulus of elasticity.

[0045] It has proven to be particularly advantageous that the at least one soft tissue component 38, 39 on the one hand and the at least one contact point 31, the at least one stop 36 or the at least one counter-stop 37 on the other hand are designed as a 2K injection molded part.

[0046] Alternatively, at least one of the provided soft tissue components 38, 39 can also be attached and connected to the ejector 8 or base body 7 by means of a form-fit, friction-fit and / or material-fit connection.

[0047] Furthermore, it can be provided that the at least one soft tissue component 38, 39 is essentially ring-shaped, preferably wherein the at least one contact point 31, the at least one stop 36, or the at least one counter-stop 37 has a corresponding receptacle 48, 49 in which the at least one soft tissue component 38, 39 is arranged or can be arranged. Such embodiments of an ejector 8 of an ejection device 1 are described in the Fig. 6, Fig. 7 and Fig. 8 shown.

[0048] If the ejection device 1 is used to eject a furniture part 3, it is advantageous to arrange at least one magnet 33 at the at least one contact point 31. If, for example, a ferromagnetic counterholder is simultaneously arranged on the furniture part 3, the ejection device 1 can hold the furniture part in the closed position in a defined position, which is characterized, for example, by a predetermined distance to an end face of a furniture carcass 2.

[0049] In a preferred configuration, the at least one magnet 33 is connected to at least one pole plate 34, wherein the at least one magnet 33 and / or the at least one pole plate 34 has at least one raised outer contour 41, particularly preferably wherein the at least one magnet 33 and the at least one pole plate 34 have mutually facing surfaces 50, 51, between which at least partially a gap 52 is formed (see also the [reference] in the Fig. Examples shown on pages 12 ff.).

[0050] In combination with the use of at least one soft tissue component 38, 39, it is advantageous for the at least one soft tissue component 38, 39 to project beyond an end face 54 of the at least one magnet 33 when viewed in a longitudinal direction 53 of the ejection device 1. In this way, direct contact between the at least one magnet 33 and a counter-holder and the associated contact noise can be avoided (see in particular the enlarged section of the contact point 31 of the Fig. 8).

[0051] If the at least one soft tissue component 38, 39 is ring-shaped, it is advantageous for the at least one soft tissue component 38, 39 to surround the at least one magnet 33 in a substantially ring-shaped manner.

[0052] The Fig. Figure 9 shows an embodiment of a base body 7 of an ejection device 1. This base body 7 can, for example, be equipped with the components shown in the Fig. 5, Fig. 6, Fig. 10 or Fig. The 11 illustrated embodiments of an ejector 8 can be combined.

[0053] It can be provided that the at least one ejector 8 is arranged in the first position to a predominant extent recessed in the base body 7 and in the second position to a predominant extent extended from the base body 7, preferably wherein at least one depth adjustment device 42 is provided with which the length 43 of the portion of the at least one ejector 8 recessed in the base body 7 in the first position can be adjusted, particularly preferably within an adjustment range of up to 5 mm. A possible embodiment of such a depth adjustment device 42 is shown in the Fig. 19 shown. It can also be used, for example, in the one in the Fig. The embodiment of an ejection device 1 shown in Figures 38 ff. is used. The length 43 of the part of the at least one ejector 8 recessed in the base body 7 in the first position is shown by way of example in the Fig. 45 is marked.

[0054] For example, from the overall view of the Fig. 9, Fig. 10 and Fig. As can be seen from Figure 11, at least one locking device 55 can be arranged on the at least one stop 36 and the at least one counter-stop 37, which secures the at least one ejector 8 at least in the second position against rotation relative to the base body 7, preferably wherein the at least one locking device 55 has at least one projection 56 in the longitudinal direction 53 of the ejector device 1 and at least one receptacle 57 for the at least one projection 56.

[0055] In this context, it has proven advantageous that at least one soft tissue component 38, 39 is arranged on at least one stop 36 and / or on at least one counter-stop 37, wherein the at least one locking device 55 is at least partially formed in the at least one soft tissue component 38, 39 (cf. Fig. 5, Fig. 6), or wherein the at least one soft tissue component 38, 39 has a clearance 58 for the at least one locking device 55 (cf. Fig. 10, Fig. 11).

[0056] The latter case is advantageous insofar as it provides the user with better adjustment feedback for a depth adjustment device 42.

[0057] The Fig. Figures 12-14 and 15-17 show further embodiments of an ejector 8 of an ejection device 1 for ejecting a furniture part 3 movable relative to a furniture body 2, preferably in the form of a flap 4, door 5 or drawer 6, from a closed position towards an open position, comprising a base body 7 and at least one ejector 8, which is mounted to be movable relative to the base body 7 at least between a first and a second position, wherein at least one energy storage device 9 is provided, with which the at least one ejector 8 can be driven to move from the first to the second position, wherein the at least one ejector 8 has at least one contact point 31, via which the at least one ejector 8 can be brought into contact with the furniture part 3 or a support device 32 associated therewith during ejection, wherein at least one magnet 33 is arranged at the at least one contact point 31.The at least one magnet 33 is connected to at least one pole plate 34, wherein the at least one magnet 33 and / or the at least one pole plate 34 has at least one raised outer contour 35.

[0058] A pole plate is a component made of a material with high permeability, for example iron. Its purpose is to allow the magnetic field lines of a permanent magnet to emerge and distribute in a defined shape.

[0059] Concentrated magnetic fields can be generated using such a pole plate. At the same time, it is a significantly more cost-effective solution compared to a magnet without a pole plate that provides a similarly strong magnetic field.

[0060] In the two in the Fig. In the embodiments shown in Figures 12-14 and 15-17, at least one further pole plate 34 is provided which is connected to the at least one magnet 33, wherein the at least one magnet 33 is arranged sandwich-like between the at least two pole plates 34.

[0061] The exemplary embodiments differ, firstly, in that in the one described in the Fig. In the embodiment shown in 12-14, both the magnet 33 and the pole plates 34 have a raised outer contour 35, whereas in the embodiment shown in the Fig. In the embodiment shown in Figures 15-17, only the pole plates 34 have a raised outer contour 35.

[0062] On the other hand, the exemplary embodiments differ in that, in the one described in the Fig. In the embodiment shown in Figures 15-17, the at least one magnet 33 and the at least one pole plate 34 have mutually facing surfaces 50, 51, between which a gap 53 is formed at least partially. For this purpose, at least one spacer 64, 65 is arranged on at least one of the mutually facing surfaces 50, 51 to form the at least one gap 53. The at least one spacer 64, 65 can, for example, be point-shaped or rib-shaped. It is advantageous that at least one adhesive is arranged in the gap 53, at least partially, which connects the at least one magnet 33 and the at least one pole plate 34.

[0063] The one in the Fig. The sandwich magnet shown in Figures 12-14, with a continuous outer contour 35 which forms a locking contour, has the advantage that it can be held very stably in a receptacle 59 in the ejector 8, if the at least one magnet 33 and the at least one pole plate 34 are arranged at least partially in a receptacle 59 in the ejector 8.

[0064] The one in the Fig. The sandwich magnet shown in Figures 15-17 with a defined adhesive gap has the advantage that it can be designed as a pre-assembled unit, which simplifies the manufacturing process of the ejection device 1.

[0065] In both embodiments, the at least one raised outer contour 35 is designed to space the at least one magnet 33 and / or the at least one pole plate 34 apart from an inner surface 60 of the receptacle 59, wherein at least one, preferably substantially annular or substantially hollow cylindrical, gap 63 is formed between a lateral surface 61, 62 of the at least one magnet 33 and / or the at least one pole plate 34 and the inner surface 60 of the receptacle 59 (see also Fig. 8), preferably wherein at least one adhesive is arranged in at least one gap 63, at least in some areas, which connects the at least one magnet 33 and / or the at least one pole plate 34 to the inner surface 60 of the receptacle 59.

[0066] Preferably, the at least one raised outer contour 35 stands out from at least one lateral surface 61, 62 of the at least one magnet 33 and / or the at least one pole plate 34, preferably substantially transverse to a longitudinal direction 53 of the ejection device 1.

[0067] Alternatively or additionally, it may be provided that at least one raised outer contour 35 is formed at least partially in a bead-like and / or ring-shaped manner.

[0068] In the case of the in the Fig. In the embodiment shown in Figures 12-14, the at least one magnet 33 and the at least one pole plate 34 form a common, preferably substantially cylindrical, outer surface 61, 62.

[0069] The Fig. Figures 18-27 show a further embodiment of an ejection device 1 for ejecting a furniture part 3, preferably in the form of a flap 4, door 5 or drawer 6, which is movable relative to a furniture body 2, from a closed position towards an open position, comprising a base body 7 and at least one ejector 8, which is movably mounted relative to the base body 7 at least between a first and a second position, wherein at least one energy storage device 9 is provided, with which the at least one ejector 8 can be driven to move from the first to the second position, and wherein at least one locking device 10 is provided, with which the at least one ejector 8 can be locked in the first position, wherein a locking of the at least one ejector 8 can be released by a release movement of the at least one ejector 8 from the first position to a release position.The ejection device 1 comprises at least one anti-slip device 11, which is designed to re-lock the at least one ejector 8 if the at least one ejector 8 does not move from the release position to the second position within a predefined time period (see in particular the . Fig. 22 and Fig. 23). The predefined time interval can be, for example, between 0.5 s and 3.0 s, preferably between 0.8 s and 2.0 s.

[0070] In the illustrated embodiment, the at least one leaning protection device 11 has at least one locking element 12 and at least one time delay device 14, by means of which the at least one locking element 12 can be moved into a catch position within the predefined time period, in which the at least one ejector 8 can be locked again.

[0071] It is advantageous for the at least one time-delay device 14 to comprise at least one damper and at least one spring 16. The term "spring" is to be interpreted broadly. It need not necessarily be a tension, compression, or torsion spring. For example, an arrangement of two suction cups with a bore can also be considered a spring. In the present case, the spring is designed as a torsion spring.

[0072] At least one time-setting device can be provided with which the predefined time interval can be set. This at least one time-setting device can be implemented, for example, by changing the spring preload of the spring. In the case of spring 16, this can be achieved, for example, by making at least one of the spring ends adjustable. For instance, it can be provided that different detent positions are provided on the base body 7, in which at least one spring end can be locked.

[0073] Various devices can also be used as dampers, such as at least one rotary damper, at least one shear cell 18, at least one friction element, at least one eyepiece thread 19, and / or at least one balance spring oscillation system. In the present case, a shear cell 18 is used. This advantageously comprises a gap, e.g., annular, and a time delay medium arranged at least partially therein.

[0074] Such time-delay media can be of different forms, e.g., in the form of at least one oil, at least one eyepiece grease 21, air and / or at least one, preferably swollen, silicone 22. In the present case, silicone or swollen silicone, e.g., a swollen silicone seal or a swollen silicone ring, is preferably used.

[0075] The at least one locking element 12 can be rotatably mounted, wherein in the present case the at least one locking element 12 is designed as a rotary latch 23. The locking element 12 is rotatably mounted about a pivot axis 87, wherein the pivot axis 87 can be oriented transversely to a longitudinal axis 53 of the ejection device, as in the illustrated case. The pivot axis 87 can have a projection 97, e.g., cylindrical or hollow cylindrical, which is mounted in a bearing 98 with a corresponding mating form, wherein a gap is formed between the projection 97 and the bearing 98 in which the time delay medium 20 is arranged.

[0076] The at least one locking element 12 has at least one locking contour 25, preferably with a detent recess. Alternatively or additionally, other detent and / or locking elements may also be provided.

[0077] The at least one locking element 12 is connected to the base body 7, preferably to a cover 26 of the base body 7.

[0078] The at least one locking device 10 comprises at least one control element 27, wherein the at least one control element 27 is pivotably and / or rotatably arranged on the at least one ejector 8 or an intermediate element 29 coupled thereto, and together with the at least one ejector 8 is movable between the first and second positions relative to the base body 7. Of course, the reverse arrangement is equally possible, in which the at least one control element 27 is connected to the base body 7 and the at least one locking element 12 is arranged on the at least one ejector 8 or an intermediate element 29 coupled thereto.

[0079] As can be seen in particular from the Fig. As can be seen from Figure 19, the ejection device 1 in this embodiment has no electrical or electromechanical components, or conversely, only mechanical components. However, embodiments are also conceivable in which the at least one leaning protection device 11 includes electrical or electromechanical components.

[0080] The one in Fig. The assembly shown in 19 comprises a connection between a magnet 33, which, as in the Fig. 12-17 can be designed, and a spacer 79 arranged with an intermediate part 29, which can be designed as a threaded rod 81.

[0081] To implement a depth adjustment device 42, threaded sleeves 80 cooperating with the threaded rod 81 can be provided.

[0082] The intermediate part 29 can be mounted on a slide 83 so that its movement is limited by a pin 84, as shown in the illustration. A spring 82 can be provided on the slide 83 on one side and on the pin 84 on the other, whereby the arrangement of spring 82, slide 83 and pin 84 can provide a locking function for the secure locking of a control element 86 arranged on the control part 27 to the locking element 12.

[0083] The control part 27 can be mounted on the ejector 8, intermediate part 29 or slide 83 by means of a pin 85.

[0084] To lock the ejector 8, the control element 86 is arranged in the locking contour 25 of the locking element 12.

[0085] As can be seen in particular from the sequence of Fig. As can be seen from paragraphs 22-27, a method for moving at least one movable furniture part 3 relative to a furniture body 2 by means of the at least one ejection device 1 can be implemented in such a way that the at least one movable furniture part 3 is ejected from a closed position in the direction of an open position when force is exerted on the at least one ejector 8 within a predefined time period, and wherein the at least one movable furniture part 3 remains in the closed position if force is exerted on the at least one ejector 8 for a period of time exceeding the predefined time period.

[0086] The Fig. Figure 27 shows the ejection device 1 in an open position, in which the ejector 8 is extended. The energy storage device 9 is relaxed or weakly charged. The locking element 12 is in a first rotational position.

[0087] The Fig. Figure 24 shows the ejection device 1 in a closed position, in which the ejector 8 is retracted into the base body 7. The energy storage device 9 is charged. The ejector 8 is locked by means of the control unit 27 and the locking element 12. The locking element 12 is in a second rotational position.

[0088] The Fig. 26 and Fig. Figures 25 show intermediate positions of the ejector 1 during the closing process. The control element 86 of the control part 27 slides along the ejector 8 on the locking element 12 towards an overpressure channel 88, which is located on the base body 7, when pressure is applied in the direction of the closing position. As soon as the pressure is reduced or switched off, the control element 86 slides into the locking contour 25 and moves the locking element 12 into the second rotational position.

[0089] The Fig. Figure 23 shows a triggering process of the ejector device 1 by renewed application of pressure force towards the closed position on the ejector 8, which moves the control element 86 out of the locking contour 25 towards the overpressure channel 88. If the pressure force is now reduced or switched off within a predefined time period, the ejector 8 moves freely towards the open position.

[0090] However, if this is not the case, i.e., if the at least one ejector 8 does not move from the release position to the second position within a predefined time period, e.g., if a user leans against the ejector 8, the at least one lean-back protection device 11 ensures that the at least one ejector 8 is re-locked. In the illustrated embodiment, this can be achieved by the locking element 12 moving into the first rotational position under the action of the spring 16 and with a time delay via the damper in the form of the shear cell 18, thereby allowing the at least one ejector to be re-engaged when the pressure force decreases. Thus, at least one locking device 10, at least one locking element 12, and at least one time-delay device 14 are provided, by which the at least one locking element 12 can be moved with a time delay.

[0091] The Fig. Figures 28-30 show an embodiment of a failure protection device 30 of an ejection device 1, wherein the Fig. Figures 31-37 illustrate the operation of the ejection device 1 in a failure state.

[0092] In the Fig. Pages 28-30 show a front view, a back view and a perspective view.

[0093] A failure of the lean-to protection can occur because the damper is ineffective, which can happen, for example, in a damper with a time delay medium, if the time delay medium leaks out of the damper and there is therefore no longer any time delay medium in the damper and the damper can no longer provide any damping performance against the spring 16.

[0094] The Fig. Figures 28-30 show what happens in such a failure scenario: As soon as the ejection device 1 is in the closed position (see Figure 28-30), the ejection device 1 is in the closed position (see Figure 28-30). Fig. 28) is unlocked, the locking element 12, due to the failure of the damper, strikes a stop on the base body 7 essentially unbraked under the action of the spring 16. The resulting shock load causes one end 68 of the spring 16 to press against a stop 67, which is thereby bent (cf. Fig. 29). The spring end 68 subsequently passes over the stop 67 and, as in the specific case shown, can come to rest on a platform 91 located behind it. The platform 91 can offer slight resistance to the spring end 68, thereby allowing the locking element 12 to move in a controlled manner. However, it is not absolutely necessary for the spring end 68 to come to rest on the platform 91. Overall, the spring 16 is disengaged.

[0095] The ejection device 1 therefore has a failure protection device 30 with which the at least one leaning protection device 11 or the at least one time delay device 14 can be at least partially deactivated and / or bypassed in a failure state.

[0096] The at least one failure protection device 30 comprises at least one disengagement mechanism 66, with which the at least one spring 16 can be transferred from a coupled state, in which the at least one time delay device 14 is effective, to a disengaged state, in which the at least one time delay device 14 is at least partially ineffective, preferably wherein the at least one disengagement mechanism 66 has at least one stop 67, on which an end 68 of the at least one spring 16 can be supported, and which can be traversed under impact for the end 68 of the at least one spring 16.

[0097] The Fig. Figures 31-37 show how the ejection device 1 can be operated in a failure state: The Fig. 31 and Fig. Figure 32 shows the closed and released positions. These do not differ from those in the Fig. 24 and Fig. 23 positions shown.

[0098] However, the subsequent procedure differs from that described in the Fig. 22-27 normal state shown. Due to the fact that the spring 16 as shown by the Fig. As described in 28-30, if the fault condition is disengaged, the locking element 12 remains unchanged in the closed position, as shown in the diagram. Fig. Figure 33 shows an open position of the ejection device 1.

[0099] During the closing process, which takes place in the Fig. As shown in Figures 34-37, the control element 27 encounters the locking element 12, specifically a switching contour 69, which is preferably arranged substantially opposite the locking contour 25. The switching contour 69 is inclined relative to the longitudinal direction 53 of the ejector 1, causing the control element 27 to slide in a preferred direction and encounter another switching contour 70 arranged on the base body 7. By applying a further force to the ejector 8, the control element 27, or the control element 86 arranged thereon, forcibly displaces the locking element 12 from its closed position, thereby opening a passage between the switching contour 70 and another switching contour 71 arranged on the locking element 12. The control element 86 slides through this channel until it reaches a position beyond the locking element 12 (see Figure 34-37). Fig. 36). As soon as no force or only a reduced force is exerted on the ejector 8, the ejector device 1 is returned to the closed position by the control part 27.

[0100] In the failure state, the locking element 12 is positively guided by the control unit 27. In this way, the ejection device 1 retains its usual tip-on ejection function despite the failure state and can remain operational without necessarily requiring replacement. The lean-to protection device 10 has been deactivated by the failure protection device 30, which comprises, on the one hand, at least one disengagement mechanism 66 and, on the other hand, switching contours 69, 70, and 71 arranged on the locking element 12 and the base body 7.

[0101] In general terms, the at least one fail-safe device 30 can comprise at least one switching contour 69, 70, 71, which is arranged on at least one locking element 12, 13, on at least one ejector 8 and / or on the base body 7, wherein the at least one switching contour is designed to move the at least one locking element 12 alternatively or additionally to the at least one time delay device 14 or to bypass the at least one locking element 12.

[0102] Another failure state can arise if the at least one time delay device 14 comprises at least one time delay medium 20, which in a delivery state has first predetermined properties and in a failure state exhibits second predetermined properties that differ from these, preferably wherein the at least one time delay medium 20 is at least partially resinified in the failure state. In comparison to the previously discussed failure state, the at least one time delay medium 20 is therefore still in the ejection device 1, but is at least partially resinified, which makes the locking element 12 stiff.

[0103] However, the ejection device 1 can also be used in this failure state as in the Fig. 31-37 are shown to be operated, wherein the control part 27 moves the locking element 12 in a positively guided manner and the ejection device 1 has the mere tip-on ejection function without a lean-to protection function.

[0104] It should be noted that alternatively or additionally, other failure states may also occur. For example, the locking element 12, 13 may become stiff, which can have various causes, such as deformation of the shear cell, or swelling and / or shrinkage of components of the ejection device 1 due to environmental influences such as moisture or heat. This means that leakage and hardening of the time delay medium 20 cannot be the only causes for a failure state.

[0105] The Fig. Figures 38-57 show a further embodiment of an ejection device 1 for ejecting a furniture part 3, preferably in the form of a flap 4, door 5 or drawer 6, which is movable relative to a furniture body 2, from a closed position towards an open position, comprising a base body 7 and at least one ejector 8, which is movably mounted relative to the base body 7 at least between a first and a second position, wherein at least one energy storage device 9 is provided, with which the at least one ejector 8 can be driven to move from the first to the second position, and wherein at least one locking device 10 is provided, with which the at least one ejector 8 can be locked in the first position, wherein a locking of the at least one ejector 8 can be released by a release movement of the at least one ejector 8 from the first position to a release position.At least one leaning protection device 11 is provided, which is designed to re-lock the at least one ejector 8 if the at least one ejector 8 does not move from the release position to the second position within a predefined time period, preferably wherein the predefined time period is between 0.5 s and 3.0 s, preferably between 0.8 s and 2.0 s.

[0106] Components of the ejection device 1, which are also used in an identical or similar manner in the one described in the Fig. The embodiment of an ejection device 1 shown in Figures 18 ff. will not be discussed again.

[0107] The at least one leaning protection device 11 comprises at least one locking element 13 and at least one time delay device 15, by means of which the at least one locking element 13 can be moved into a catch position within the predefined time period after a time delay, in which the at least one ejector 8 can be locked again.

[0108] The at least one time delay device 15 comprises at least one damper and at least one spring 17. In the present case, the spring 17 is designed as a tension spring, although other designs are also conceivable.

[0109] The at least one time delay device 15 comprises, in the present case, at least one eyepiece thread 19 and at least one time delay medium 20, preferably in the form of at least one eyepiece grease 21. However, other embodiments of the time delay device 15 are also conceivable.

[0110] The at least one locking element 13 is rotatably mounted, wherein the at least one locking element 13 is designed as a rotating element 24. Specifically, the rotating element 24 can be designed as a rotating sleeve, as in the illustrated case, in the center of which at least one spring 17 is arranged at least partially and / or is formed integrally with a part of the eyepiece thread 19, e.g., an external thread.

[0111] The at least one locking element 13 has at least one locking contour 25, preferably with a detent recess.

[0112] The at least one locking element 13 is also part of the at least one locking device 10, i.e., the at least one locking element 13 of the at least one leaning protection device 11 and the at least one locking element 13 of the at least one locking device 10 are the same component.

[0113] The at least one locking element 13 is connected to the base body 7, preferably, as in the specific case shown, to a cover 26 of the base body 7. The spring 17 can also be attached to the cover 26. In this case, the spring 17 is clamped between the cover 26 and the rotary element 24 and, when tensioned, exerts a force on the rotary element 26 in the direction of the cover 26. Optionally, as in the case shown, a travel limiter 89 can also be provided, which forms an end stop for the rotary element 24 in the extension direction.

[0114] At least one time-setting device can be provided with which the predefined time interval can be set. This at least one time-setting device can be implemented, for example, by changing the spring preload of the spring. In the case of spring 17, this can be achieved, for example, by making at least one of the spring ends adjustable. For instance, it can be provided that the cover 26 is mounted on the base body 7 via a thread, and that the spring preload can be changed by rotating the cover 26, to which the spring 17 is attached.

[0115] The at least one locking device 10 comprises at least one control element 28, which is rotatably arranged on the at least one ejector 8 or an intermediate element 29 coupled thereto, and is movable together with the at least one ejector 8 between the first and second positions relative to the base body 7. One or preferably more than one control element 90 can be arranged on the control element 28, which can interact with the at least one locking element 13. The control element 90 can, for example, have a substantially elongated shape with rounded end sections.

[0116] The at least one locking element 13 and the at least one control part 28 can of course also be arranged in a reverse arrangement, i.e., that the at least one locking element 13 is arranged on the at least one ejector 8 or an intermediate part 29 coupled thereto, and the at least one control part 28 is connected to the base body 7.

[0117] The locking element 13 and / or the control part 28 can be designed to be rotationally symmetrical, as in the case shown.

[0118] In its operation, the ejection device 1 is similar in function to the operating principle of a ballpoint pen in the present embodiment, whereas in the embodiment of the Fig. The ejection device 1 shown in Figure 18 ff. employs an essentially linear locking principle.

[0119] The detailed operating principle of ejection device 1 is described in the Fig. 46-57 highlight: Fig. Figure 46 shows a closed position of the ejection device. The control element 28, and thus the ejector 8, is locked to the locking element 13 via the control elements 90. The control elements 90 are each secured in a locking contour 25 against the charged energy storage device 90. In principle, only one control element 90 can be provided.

[0120] By applying pressure to the ejector 8, the control elements 90 can be moved out of the locking contours 25 and at least partially into overpressure channels 88, which can be formed in or on the cover 26 of the base body 7 (see figure). Fig. 47).

[0121] If the pressure force applied to the ejector 8 is reduced or switched off, it can subsequently move unhindered towards an open position, with two intermediate positions in the Fig. 48 and Fig. 49 are shown. The control elements 90 slide down an inclined contour 93 and enter an outlet or inlet channel 94.

[0122] The Fig. Figures 50-55 show a closing process in which a pressure force is again exerted on the ejector 8 and thus on the control part 28 and the control elements 90.

[0123] The control elements 90 initially encounter a sliding contour 95 (see below). Fig. 50), then enter an exit or entry channel 94 (see Fig. 51), meet a deflection contour 96 (cf. Fig. 52), which positions them above the locking contours 25. If the pressure force is now reduced or switched off, the control elements 90 return to their original closed position (see Figure 52). Fig. 54 and Fig. 55).

[0124] Now the ejection device 1 could be triggered again, which would move the control elements 90 out of the locking contours 25 again (cf. Fig. 56). However, if a pressure force is exerted on the ejector 8 for a period of time, e.g. by unintentional leaning, whereby the period of time exceeds a predefined period, the locking element 13 is rotated with a time delay by the time delay device 15 into a position in which the locking contours 25 are again arranged below the control elements 90, whereby these can be re-engaged (cf. Fig. 57) and the ejection device 1 does not eject, but remains locked. This means that the ejection device 1 includes a leaning protection device 11.

[0125] The Fig. Figures 58-69 each show a section of a further embodiment of an ejection device 1, which, apart from the illustrated assembly, can be identical to the embodiment described above.

[0126] In addition, at least one failure protection device 30 is provided, with which the at least one leaning protection device 11 or the at least one time delay device 15 can be at least partially deactivated and / or bypassed in a failure state.

[0127] The at least one fail-safe device 30 comprises at least one switching contour 72, which is arranged on at least one locking element 13, on at least one ejector 8 and / or (as in the specific case shown) on the base body 7, wherein the at least one switching contour 72 is designed to bypass the at least one locking element 13.

[0128] In the exemplary failure state, the at least one time delay device 15 comprises at least one time delay medium 20, which in a delivery state has first predetermined properties and in a failure state exhibits second predetermined properties that differ from these, wherein the at least one time delay medium 20 is at least partially resinified in the failure state, which prevents the locking element 13 from being rotated relative to the base body 7 and renders the leaning protection device 11 ineffective, which in the Fig. 63 is symbolized by a cross. The at least one switching contour 72 nevertheless ensures that the tip-on ejection function of the ejection device 1 is retained, as shown in the Fig. 58 (locked), Fig. 59 (Trigger), Fig. 60-62 (Open) and Fig. 64-69 (Closing) is shown in detail.

Claims

[1] Ejection device (1) for ejecting a furniture part (3), preferably in the form of a flap (4), door (5) or drawer (6), which is movable relative to a furniture body (2), from a closed position towards an open position, comprising a base body (7) and at least one ejector (8), which is movably mounted relative to the base body (7) at least between a first and a second position, wherein at least one energy storage device (9) is provided with which the at least one ejector (8) is driven to move from the first to the second position, wherein the at least one ejector (8) has at least one contact point (31) via which the at least one ejector (8) can be brought into contact with the furniture part (3) or a support device (32) associated therewith during ejection, wherein at least one magnet (33) is arranged at the at least one contact point (31), characterized by, that the at least one magnet (33) is connected to at least one pole plate (34), wherein the at least one magnet (33) and / or the at least one pole plate (34) has at least one raised outer contour (35). [2] Ejection device (1) according to claim 1, wherein the at least one magnet (33) and the at least one pole plate (34) are arranged at least sectionally in a receptacle (59) in the ejector (8). [3] Ejection device (1) according to claim 2, wherein the at least one raised outer contour (35) is designed to space the at least one magnet (33) and / or the at least one pole plate (34) apart from an inner surface (60) of the receptacle (59), wherein at least one, preferably substantially annular or substantially hollow cylindrical, gap (63) is formed between a lateral surface (61, 62) of the at least one magnet (33) and / or the at least one pole plate (34) and the inner surface (60) of the receptacle (59), preferably wherein at least one adhesive is arranged at least partially in the at least one gap (63), which connects the at least one magnet (33) and / or the at least one pole plate (34) to the inner surface (60) of the receptacle (59). [4] Ejection device (1) according to one of claims 1 to 3, wherein the at least one raised outer contour (35) of at least one lateral surface (61, 62) of the at least one magnet (33) and / or the at least one pole plate (34) protrudes, preferably substantially transversely to a longitudinal direction (53) of the ejection device (1). [5] Ejection device (1) according to one of claims 1 to 4, wherein the at least one raised outer contour (35) is formed at least partially in a bead-shaped and / or ring-shaped manner. [6] Ejection device (1) according to any one of claims 1 to 5, wherein the at least one magnet (33) and the at least one pole plate (34) form a common, preferably substantially cylindrical, outer surface (61, 62). [7] Ejection device (1) according to one of claims 1 to 6, wherein at least one further pole plate (34) is provided which is connected to the at least one magnet (33), preferably wherein the at least one magnet (33) is arranged sandwich-like between the at least two pole plates (34). [8] Ejection device (1) according to one of claims 1 to 7, wherein the at least one magnet (33) and the at least one pole plate (34) have mutually facing surfaces (50, 51) between which at least partially a gap (53) is formed. [9] Ejection device (1) according to claim 8, wherein at least one spacer (64, 65) is arranged on at least one of the mutually facing surfaces (50, 51) to form the at least one gap (53). [10] Ejection device (1) according to claim 8 or 9, wherein at least one adhesive is arranged in the gap (53) at least partially, which connects the at least one magnet (33) and the at least one pole plate (34). [11] Ejection device (1) according to one of claims 1 to 10, wherein at least one soft tissue component (38, 39) is arranged at the at least one contact point (31), preferably wherein - the at least one soft tissue component (38, 39) consists of at least one material with a first modulus of elasticity, and wherein the at least one contact point (31) consists of at least one material with a second modulus of elasticity, wherein the first modulus of elasticity is smaller than the second modulus of elasticity, and / or - which at least one soft tissue component (38, 39) on the one hand and at least one contact point (31) on the other hand are designed as a 2K injection molded part. [12] Ejection device (1) according to claim 11, wherein the at least one soft tissue component (38, 39) is substantially ring-shaped, preferably wherein - which has at least one contact point (31) a corresponding receptacle (48, 49) in which at least one soft tissue component (38, 39) is arranged or can be arranged, and / or - the at least one soft tissue component (38, 39) substantially surrounds the at least one magnet (33) in a ring-like manner, and / or - which, viewed in a longitudinal direction (53) of the ejection device (1), extends over an end face (54) of the at least one magnet (33). [13] Ejection device (1) according to one of claims 1 to 12, wherein at least one locking device (10) is provided with which the at least one ejector (8) can be locked in the first position, wherein a locking of the at least one ejector (8) can be released by a release movement of the at least one ejector (8) from the first position into a release position. [14] Ejection device (1) according to claim 13, wherein - at least one anti-lever device (11) is provided, which is designed to re-lock the at least one ejector (8) if the at least one ejector (8) does not move from the release position to the second position within a predefined time period, particularly preferably wherein the at least one anti-lever device (11) has at least one locking element (12, 13) and at least one time delay device (14, 15) by which the at least one locking element (12, 13) can be moved with a time delay within the predefined time period into a catch position in which the at least one ejector (8) can be re-locked, and / or - the at least one ejector (8) is movable in a first direction relative to the base body (7) during a movement from the first to the second position, and wherein the at least one ejector (8) is movable in a second direction opposite to the first direction during the triggering movement. [15] Ejection device (1) according to any one of claims 1 to 14, wherein the at least one ejector (8) and / or the base body (7) has a substantially cylindrical outer contour (40, 41), and / or wherein the at least one ejector (8) and the base body (7) are slidably mounted to one another, and / or wherein the ejection device (1) has only mechanical components. [16] Ejection device (1) according to any one of claims 1 to 15, wherein the at least one ejector (8) is arranged in the first position to a predominant extent recessed in the base body (7) and in the second position is extended to a predominant extent from the base body (7), preferably wherein at least one depth adjustment device (42) is provided with which the length (43) of the part of the at least one ejector (8) recessed in the base body (7) in the first position can be adjusted, particularly preferably in an adjustment range of up to 5 mm. [17] Furniture fitting (44) for the movable mounting of a furniture part (3) relative to a furniture carcass (2) or furniture (45) with a furniture carcass (2) and at least one furniture part (3) mounted so as to be movable relative to it, characterized bythat the furniture fitting (44) or the furniture (45) comprises at least one ejection device (1) according to one of the preceding claims, preferably wherein the at least one ejection device (1) in the case of the furniture (45) is inserted or arranged in a bore in or on a wall (46, 47) of the furniture (45).

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