Locking device for releasably locking two furniture parts that can move relative to one another

Abstract

The invention relates to a locking device (1) for releasably locking two furniture parts (2) that can move relative to one another against the force of a force accumulator (3), comprising a heart-shaped locking contour (4) with a heart-shaped depression (5) and at least one locking element (6) which is more particularly bolt-shaped, and can move relative to the heart-shaped locking contour (4) and, in a locking position (V), can be arranged in the heart-shaped depression (5) of the heart-shaped locking contour (4), wherein the at least one locking element (6) can be moved, by a motion out of the locking position (V) into a further pushed position (U), out of the heart-shaped depression (5) into a release position (F), wherein the locking device (1) has a push-through depression (7) separate from the heart-shaped depression (5), in which the at least one locking element (6) can be arranged and at least one blocking contour (8) which blocks movement of the at least one locking element (6) out of the push-through depression (7) into the heart-shaped depression (5). (Fig. 1a)

Description

[0001] Locking device for the releasable locking of two furniture parts that are movable relative to each other

[0002] The invention relates to a locking device for releasably locking two furniture parts movable relative to each other against the force of a power storage device, comprising a heart-shaped locking contour with a heart-shaped recess and at least one locking element movable relative to the heart-shaped locking contour, in particular a bolt-shaped one, which can be arranged in a locking position in the heart-shaped recess of the heart-shaped locking contour, wherein the at least one locking element can be moved from the locking position into an overpressure position from the heart-shaped recess into a release position. The invention further relates to an ejection device for a movable furniture part, comprising at least two components movable relative to each other and at least one power storage device which is effective between the at least two components.The invention further relates to an ejection device for a movable furniture part, comprising at least two levers pivotable relative to each other, at least one energy storage device which, in a charged state, exerts a force on the at least two levers in the direction of an open pivot position, and at least one locking device for releasably locking the at least two levers in a closed position against the force of the charged energy storage device. The invention further relates to a piece of furniture with a furniture body and at least one furniture part movable relative to the furniture body.

[0003] Locking devices with heart-shaped locking contours and ejection devices with such locking devices are known from the prior art. However, with such ejection devices, the problem is that the locking device always engages when the ejection device is in a closed position. There are, however, applications where an ejection device is required that does not automatically engage when entering the closed position. For example, the ejection and locking devices from the prior art are not suitable for engaging a locking device that depends on the relative position—for example, of the ejection device—in the closed position, since the locking device engages in every position of the closed position.

[0004] JP2011-162994 describes a door frame with a movable furniture section consisting of two panels and an ejection device. A lever of the ejection device is pressed against a guide rail of the door frame by a compression spring located centrally at a base, thus spreading the movable furniture section from a closed position to an open position. When the movable furniture section is manually closed, the lever engages the guide rail of the door frame again, the movable furniture section moves into the closed position, and the compression spring is thereby compressed. In the closed position, the ejection device is locked by a locking mechanism. The locking mechanism consists of a gripper that generates a lock by engaging a hook.

[0005] A disadvantage of the prior art is that, due to the design of the ejection device, which consists of only one lever (a spring acting around a pivot axis to generate an opening action of the movable furniture component), a separately arranged guide rail is required. Due to its size, this separately arranged guide rail cannot be positioned between the panels of the movable furniture component, thus enabling the ejection device to only facilitate the transition between a closed and an open position. Furthermore, the locking mechanism engages the ejection device at small opening angles of the panels of the movable furniture component, eliminating the need to open the movable furniture component from a folded position using the ejection device.This is due to the design of the locking mechanism and the compression spring positioned centrally at the base. The compression spring transmits force to the lever perpendicular to the base, preventing small opening angles of the panels. In particular, it prevents the ejection mechanism from locking at small angles between the lever and the base, even with the same functionality. Furthermore, the compression spring transmits the force of the ejection mechanism abruptly, resulting in less comfortable use of the furniture and a reduced service life for the components involved in the spreading process.The objective technical object of the present invention is therefore to provide a locking device, an ejection device with a locking device, and a piece of furniture with such an ejection device that are improved compared to the prior art, in which the disadvantages of the prior art are at least partially eliminated, and which are characterized in particular by the fact that a locking mechanism is selectively dependent on how far the locking device closes.

[0006] The problem is solved by the features of claim 1, claim 7, claim 8 and claim 17.

[0007] According to the invention, the locking device has a push-through recess separate from the heart recess, in which the at least one locking element can be arranged, and at least one deflection contour which blocks movement of the at least one locking element from the push-through recess into the heart recess.

[0008] The at least one heart-shaped recess ensures a locked state, whereby the at least one deflection contour guides the at least one locking element into the pressure-through recess when the locking device is over-pressed from the locked state. If the at least one locking element is located in the pressure-through recess, then, when the locking device transitions to a less over-pressed position, the at least one locking element is guided past the heart-shaped recess by the at least one deflection contour and moved into a release position.

[0009] When the locking device is in the release position, continuous pressure on the locking device guides the at least one locking element past the center recess and into the pressure-through recess. After the pressure is released, the device transitions to a new release position. If the pressure on the locking device is released essentially immediately after the at least one locking element has risen above the center recess, the at least one locking element is positioned in the center recess, and the locking state is established.

[0010] This makes it possible for the locking device to be moved from the release position to the locked state and from the locked state to the release position, depending on a pressure application profile, and from the release position back to the release position without subsequent locking.

[0011] The locking device thus enables selective locking, depending on several possible relative positions of the locking element with respect to the heart-shaped locking contour.

[0012] Furthermore, according to the invention, the ejection device has at least one such locking device, wherein the heart-shaped locking contour is arranged on one and the at least one locking element on the other of the at least two components that are movable relative to each other.

[0013] This makes it possible that when pressure is applied to the ejection device, at least one locking element can come to rest in the heart-shaped locking contour and the ejection device can be moved into a secure closed position.

[0014] Furthermore, according to the invention, the at least one locking device is designed such that the at least two levers are freely movable relative to each other in a pushed-through position in which the levers enclose an angle that is smaller than the angle of the levers in the closed position.

[0015] Because the at least two levers are freely movable relative to each other in the depress position, it is made possible for the at least one locking element of the locking device to be guided past the heart-shaped locking contour via the at least one deflection contour, thus ensuring the transition of the ejection device into the open pivot position.

[0016] Regardless of whether the ejection device is previously in the closed position or in an open pivot position, when pressure is applied beyond the closed position, the transition of the ejection device to a push-through position is ensured, and when the pressure is cessated, it is ensured to return to the open pivot position.

[0017] The force of at least one energy storage device is effective both in the closed position for effective locking and in the push-through position to support the movement into the open pivot position.

[0018] Furthermore, according to the invention, the furniture has at least one such ejection device.

[0019] This enables the at least one ejection device to assist in transferring the at least two plates of the movable furniture part from the coplanar position to an open position and the at least two plates from the parallel position to a spread position.

[0020] In the parallel position, the at least one ejection device is in the forced-through position, with the locking devices arranged thereon in the over-compression position. This allows the force of the energy storage devices to act during movement from the parallel position and enables the at least two plates to unfold.

[0021] In the coplanar position, the at least one ejection device is in the closed position, with the locking devices attached to it in the locked position. This inhibits the force of the energy storage devices, and the at least two plates remain stationary in the coplanar position. When the at least one ejection device transitions into the forced-open position, the locking device is in the over-forced position, whereby the force of the energy storage devices acts and allows the at least two plates to open.

[0022] This ensures that both the movable furniture part can be opened from a coplanar position and spread open from a parallel position by means of at least one ejection device.

[0023] Advantageous embodiments of the invention are defined in the dependent claims.

[0024] According to an advantageous embodiment of the invention, it is provided that the at least one deflection contour has at least one deflection slope with which the at least one locking element can be forced from an arrangement in the push-through recess in the direction of the release position.

[0025] The deflection slope enables the at least one locking element to be guided past the heart-shaped locking element after the at least one locking element is arranged in the push-through recess, and the locking device does not move into the locking position - but into the release position.

[0026] In one embodiment of the invention, the locking device has at least one bypass channel through which the at least one locking element can be moved past the Flerz recess into the push-through recess.

[0027] The at least one bypass channel particularly facilitates the transition of the at least one locking element from the release position past the heart-shaped locking contour and the at least one deflection contour into the pressure-through recess.

[0028] Advantageously, the locking device has at least one entry opening for the at least one locking element, and the heart-shaped locking contour and the at least one deflection contour are arranged between the at least one entry opening and the push-through recess.

[0029] Through at least one entry opening, at least one locking element can move from the release position into the heart-shaped locking contour and / or the pressure-through recess.

[0030] Because the at least one deflecting contour and the heart-shaped locking contour are arranged between the push-through recess and the at least one entry opening, depending on the degree of compression, the release position can either be set to the locking position followed by a new release position, or to a new release position without any intermediate locking. In both variants, the at least one locking element enters the push-through recess before release.

[0031] It has proven advantageous that at least the heart-shaped locking contour, the push-through recess and at least one deflection contour are arranged on a common base.

[0032] This reduces maintenance effort and extends the service life, as there are fewer separate components of the locking device.

[0033] It has proven advantageous that the at least one locking element is arranged on a pivotable wing, preferably one of at least two pivotable wings relative to each other.

[0034] This allows at least one locking element to enter the at least one entry opening of the locking device when the pivotable fin moves relative to a second component or fin.

[0035] An advantageous variant consists in that the at least one locking device is designed according to one of claims 1 to 5, wherein the heart-shaped locking contour is arranged on one and the at least one locking element on the other of the at least two levers that can be pivoted relative to each other.

[0036] This results in a particularly favorable movement pattern of the at least one locking element between the at least one entry opening and the push-through recess.

[0037] It is particularly preferred that one of the at least two levers has fastening means for attaching the ejection device to the movable furniture part, and / or one of the at least two levers has a free end on which at least one rotatably mounted rolling element for supporting the lever against a stop surface, and / or one of the at least two levers has a free end on which at least one spacer is arranged, preferably wherein the at least one spacer can be arranged in different positions relative to the free end.

[0038] The fastening devices ensure that the ejection device can be securely fixed to the movable part of the furniture after installation.

[0039] The rolling elements arranged at the free end reduce friction during contact between the ejector and the stop surface, thereby increasing the service life of both the ejector and the stop surface. The stop surface can be arranged on a separate component of a piece of furniture or be an integral part of the furniture. Preferably, the stop surface is formed by the furniture body during the transition between the coplanar position and the open position, and by one of at least two plates during the transition between the parallel position and the spread position.

[0040] The at least one spacer positioned at the free end allows for adjustments to the furniture's design by modifying the distance between the ejection mechanism and the stop surface. Depending on the spacer's setting, the locking mechanism of the ejection device will engage into the over-pressure position sooner or later when pressure is applied by the user. Furthermore, the spacer allows for fine-tuning to ensure the locking position is maintained at a predetermined angle between the at least two levers.

[0041] It has proven advantageous that the ejection device has a first part of a locking device which can be brought into operative contact with a second part of the locking device which can be arranged on a piece of furniture, preferably wherein one of the two parts of the locking device has a permanent magnet and the other of the two parts is at least partially metallic, and / or the first part of the locking device is arranged on an outside of the ejection device.

[0042] The two-part clamping device allows for adjustments to the dimensions of the furniture and / or the structural conditions before assembly.

[0043] The locking device supports the at least one energy storage device in such a way that, in the locking position, the at least one locking element is pressed into the heart-shaped recess of the heart-shaped locking contour in order to prevent unwanted release of the lock in the coplanar position.

[0044] Furthermore, it is preferably provided that at least one spreading element is arranged between the at least two levers and at least one further energy storage device is provided, wherein the at least two levers can be subjected to force via the at least one spreading element by the at least one further energy storage device.

[0045] This results in the advantageous effect that the force applied to the at least two levers via the at least one spreading element is mediated by at least one additional energy storage device. Furthermore, this offers greater ease of use for the ejection device and / or the furniture, as less force is required from the user and even more massive and / or larger movable furniture parts can be opened or spread open with less effort using the ejection device.

[0046] Furthermore, the force of the at least one ejection device is distributed smoothly during the movement of the movable furniture part, as the at least one additional energy storage device acts via the at least one spreading element. This protects the furniture components and ensures user-friendly operation of the ejection device and the furniture itself.

[0047] It is particularly advantageous that at least one additional energy storage device is arranged essentially parallel to one of the at least two levers.

[0048] This makes it possible that in the closed position of the ejection device essentially no force acts on the at least one spreading element, since in the locked state essentially a dead center position is established between the at least one further energy storage device with respect to one of the at least two levers.

[0049] Furthermore, a particularly favorable power transmission from the at least one additional power storage device to the at least two levers takes place, resulting in both a smooth and harmonious opening and spreading process as well as a charging process of the at least one additional power storage device.

[0050] It has proven advantageous that the at least one energy storage device and / or the at least one further energy storage device is designed in the form of at least one spring.

[0051] Since springs are inexpensive to produce and purchase, this allows for a cost-effective ejection device. According to an advantageous embodiment of the invention, the at least one further energy storage device is arranged between a stationary energy storage device holder and a power storage device holder movable relative to it, and / or the at least one further energy storage device is arranged on at least one crossbar connected to the at least one spreading element, preferably wherein the at least one crossbar comprises at least one roller element for movement along one of the at least two levers.

[0052] The stationary power storage bracket enables force transmission via one of at least two levers to the movable furniture component and subsequently to the furniture itself. The movable power storage bracket enables force transmission via at least one spreading element to at least two levers.

[0053] By arranging the movable power storage bracket on the at least one crossbar, a more flexible installation method for the at least one further power storage unit is enabled, and due to an extension of the at least one crossbar, several further power storage units can also be accommodated.

[0054] By moving at least one crossbar during the spreading or loading of the ejection device, roller elements prove to be particularly advantageous, since the friction to one of the at least two levers is reduced and guidance is provided at a distance of a radius of the roller elements to one of the at least two levers.

[0055] According to an advantageous embodiment of the invention, it is provided that the at least one spreading element is pivotally connected to the at least one crossbar and / or one of the at least two levers.

[0056] This makes it possible to transmit the movement of the at least one crossbar, initiated by the at least one further energy storage device, to the at least two levers via a rotational movement of the at least one spreading element. An advantageous embodiment is that the at least one energy storage device and / or the at least one further energy storage device can be charged by a movement of at least one of the at least two levers.

[0057] This makes it possible for the energy stored in the energy storage devices during the movement of at least one of the at least two levers to subsequently be available for the movement of the movable furniture part and to assist the user in moving the movable furniture part.

[0058] It is particularly preferred that the at least one movable furniture part has at least two plates articulated together, which are movable between a coplanar position in which the at least two plates are arranged substantially in the same plane, and a parallel position in which the at least two plates are arranged substantially parallel to each other, that at least one ejection device according to one of claims 7 or 8 to 16 is formed and is arranged on one of the at least two plates, and that at least two levers are arranged in the locked closing position when the at least two plates are in the coplanar position, and in the unlocked push-through position when the at least two plates are in the parallel position.

[0059] The ejection device, which is in the locked closed position and in the coplanar position of at least two plates, prevents unintended opening of the movable furniture part.

[0060] The ejection device, in the unlocked push-through position with the at least two plates in parallel, enables automatic spreading of the movable furniture part, unless this spreading is prevented by a lateral receiving shaft or a provided carriage (optional).

[0061] According to a preferred embodiment of the invention, at least one receiving shaft, preferably arranged laterally to the side of the furniture body, is provided for receiving the at least one movable furniture part arranged in the parallel position of the at least two panels.

[0062] By recessing the movable furniture component into a lateral recess, the furniture body remains freely accessible. Furthermore, the absence of a movable component positioned in front of the furniture in a parallel position results in an aesthetically pleasing piece of furniture.

[0063] It has proven advantageous that the at least one ejection device can be moved from the locked closed position to the open pivot position by applying pressure to the at least two plates, preferably being able to carry out the application of pressure in an area in which the at least two plates are pivotally connected to each other.

[0064] This allows the operator of the furniture to easily release the at least one ejection device that is in the closed position. The at least one locking element is thereby moved from the heart-shaped curve into the overpressure recess, and the locking device can then move into the release position.

[0065] It has proven advantageous to provide at least one carriage, preferably movable along at least one horizontally arranged rail, which can be coupled to one of the at least two plates, preferably by means of at least one hinge, wherein it is preferably provided that the at least one carriage together with the movable furniture part can be lowered into the at least one receiving shaft, and / or that the carriage, when moving along the at least one rail, is supported on a guide via at least one guide roller, and / or that movement of the at least one spreading element can be locked by means of the at least one carriage.

[0066] The movement of at least two panels is guided by at least one carriage, thus ensuring stable movement of the movable furniture component along the furniture body. This also prevents either panel from shearing off.

[0067] The at least one guide roller facilitates the movement of the at least one carriage along the at least one rail, as the friction between the at least one carriage and the at least one rail is reduced.

[0068] According to an advantageous embodiment of the invention, at least one ejection device is provided for ejecting the at least two plates from the at least one receiving shaft.

[0069] The at least one ejection device makes it easier for the user of the furniture to transport the movable furniture part from a recessed position in the receiving shaft, wherein outside the at least one receiving shaft the at least one ejection device causes the at least two plates to spread open.

[0070] Further details and advantages of the present invention are explained in more detail below with reference to the description of the figures and the exemplary embodiments illustrated in the drawings. These show:

[0071] Fig. 1a-1b shows an ejection device according to a first preferred one.

[0072] Exemplary embodiment in an open state in a perspective view and a side view,

[0073] Figs. 2a-2b show the ejection device according to the one shown in Fig. 1a

[0074] Exemplary embodiment in an unlocked state with a recess shown in the illustration for revealing a

[0075] Locking device according to a preferred embodiment in a perspective view and a side view,

[0076] Fig. 3a-3h the locking device according to a first preferred

[0077] Exemplary embodiment in various chronologically represented positions from a release position to a locking position and from the locking position via an overpressure position to a release position in views from the side of the ejection device according to the exemplary embodiment shown in Fig. 2a,

[0078] Fig. 4 shows a piece of furniture according to a preferred embodiment with a lateral receiving chute, an ejection device according to the embodiment shown in Fig. 1a and two plates in a coplanar position in a top view with two detailed views of a limiting element in the coplanar position and an overpressed position.

[0079] Figs. 5a-5b show the ejection device according to the one shown in Fig. 1a

[0080] Exemplary embodiment with contact to a furniture body in two different positions of a spacer,

[0081] Figs. 6a-6b show the furniture according to the embodiment shown in Fig. 4 with the two panels in a parallel position in a laterally arranged receiving shaft,

[0082] Fig. 7 shows an exploded view of the ejection device in its

[0083] Individual components according to the embodiment shown in Fig. 1a in a perspective view,

[0084] Figs. 8a-8d show an ejection device according to a second preferred

[0085] Exemplary embodiment between a movable furniture part and the furniture body of a piece of furniture with a locking device according to a second preferred embodiment, in different positions between the coplanar position and an open position of the movable furniture part and a lateral receiving shaft in a top view,

[0086] Figs. 9a-9c show the ejection device according to the one shown in Fig. 8a

[0087] Exemplary embodiment between two plates of the movable furniture part of the furniture according to the exemplary embodiment shown in Fig. 8a in different positions between the parallel position and a spread position of the movable furniture part in a view from above,

[0088] Figs. 10a-10b show the ejection device according to the one shown in Fig. 8a

[0089] Exemplary embodiment in an enlarged side view in a depressed position and an open pivot position, Figs. 11a-11b the ejection device according to the one shown in Fig. 8a

[0090] An embodiment in an enlarged perspective view, Figs. 12a-12c, shows a piece of furniture according to a further preferred embodiment with a lateral receiving chute, an ejection device according to the embodiment shown in Fig. 8a and various positions of the movable furniture part, guided by a carriage, in a perspective view.

[0091] Fig. 13 shows an exploded view of the ejection device according to the embodiment shown in Fig. 8a, broken down into its individual components.

[0092] Figs. 14a-14b show the ejection device according to the one shown in Fig. 8a

[0093] Exemplary embodiment in a closed position with a representation of the component contours and a detailed view of a locking mechanism according to a further preferred embodiment in the locked state and the release position,

[0094] Fig. 15 shows a moment curve of an ejection device according to a further preferred embodiment with two energy storage devices and two further energy storage devices.

[0095] Fig. 1a shows an ejection device 20 for a movable furniture part 2 (not shown for clarity), comprising two components 21 movable relative to each other and two energy storage devices 3 in the form of a spring 35 (torsion spring). The two energy storage devices 3 act between the two components 21, the two components 21 being designed as two levers 22.

[0096] The ejection device 20 has a locking device 1, wherein a heart-shaped locking contour 4 is arranged on one and a locking element 6 on the other of the two components 21 that can be moved relative to each other.

[0097] Fig. 1b shows the ejection device 20 with two levers 22 pivotable relative to each other and two energy storage devices 3, which exert a force on the two levers 22 in a charged state in the direction of an open pivot position G, and a locking device 1 for releasably locking the two levers 22 in a closed position S against the force of the charged energy storage devices 3. The locking device 1 is designed such that the two levers 22 are freely movable relative to each other in an unlocked position D, in which the levers 22 enclose an angle 23 that is smaller than the angle 23 of the levers 22 in the closed position S.

[0098] Fig. 2a and Fig. 2b differ from Fig. 1a and Fig. 1b respectively in that the two levers 22 are pivoted from the open pivot position G towards the closed position S and in the illustration have a recess in the two levers 22 to make the locking device 1 present in the release position F visible.

[0099] Fig. 3a shows the locking device 1 for releasable locking of two furniture parts 2 that are movable relative to each other against the force of a power storage device 3 (not visible in the detail section) in an enlarged view.

[0100] The locking device 1 comprises the heart-shaped locking contour 4 with a heart recess 5 and the locking element 6 which is movable relative to the heart-shaped locking contour 4.

[0101] The locking element 6 can be arranged on one of the two levers 22 via a guide, wherein the locking element 6 is, for example, movable in the direction of a longitudinal extension of the lever. The locking element 6 can also be pivotally mounted, as shown in Fig. 2a, in order to follow the contours of the locking device 1.

[0102] The locking device 1 is in the release position F, since the locking element 6 is not located in the heart-shaped recess 5 and is also not located beyond it (in this view, looking upwards), for example, in a bypass channel 10 or a push-through recess 7. In this position, the locking element 6 enters an entry opening 11 of the locking device 1. The heart-shaped locking contour 4 and a deflection contour 8 are located between the entry opening 11 and the push-through recess 7.

[0103] The locking element 6 is arranged on one of two levers 22 that are pivotable relative to each other. The heart-shaped locking contour 4 is arranged on one and the locking element 6 on the other of the two levers 22 that are pivotable relative to each other.

[0104] Fig. 3b shows the locking device 1 still in the release position F, with the two levers 22 pivoted further relative to each other in relation to Fig. 3a.

[0105] Fig. 3c shows the locking device 1 in an overpressure position U, with the two levers 22 arranged in a push-through position D. The locking element 6 is arranged above the heart-shaped recess 5, since, according to the invention, the end of the locking element 6 that has entered the entry opening 11 of the locking device 1 is considered.

[0106] Fig. 3d shows the locking device 1 in a locking position V, in which the locking element 6 is arranged in the heart-shaped recess 5 of the heart-shaped locking contour 4.

[0107] Fig. 3e shows the locking device 1 in the overpressure position U, with the locking element 6 arranged in the bypass channel 8. The levers 22 are in the push-through position D.

[0108] Fig. 3f shows the locking device 1 in the overpressure position U, with the locking element 6 arranged in the push-through recess 7. In this position, the levers 22 are fully pivoted relative to each other and are essentially in a parallel position.

[0109] Fig. 3g shows the locking device 1 on the way between the overpressure position U and the release position F, wherein the locking element 6 from the push-through recess 7 meets a deflecting slope 9 of the deflecting contour 8 and the locking element 6 is pushed to the left of the bypass channel 10 in this view.

[0110] After passing the deflecting slope 9, the locking element 6 can exit past the heart-shaped locking contour 4 and through the entry opening 11. This can generally be generated automatically after the deflecting contour 8 has ceased contact or by a preload (in this view in a left direction) of the locking element 6.

[0111] Fig. 3h shows the locking device 1 in the position in which it has again entered the release position F. The described cycle can then be repeated. The locking element 6 can also be pressed directly into the push-through recess 7 without stopping in the recess 5, in order to enter the release position F again without setting the locking state V.

[0112] The locking element 6 is arranged in a locking position V in the recess 5 of the heart-shaped locking contour 4 and the locking element 6 can be moved from the locking position V into an overpressure position U from the recess 5 into a release position F.

[0113] The locking device 1 has a push-through recess 7, separate from the push-through recess 5, in which the locking element 6 is movable in the overpressure position U. The locking device 1 has a deflection contour 8, which blocks movement of the locking element 6 from the push-through recess 7 into the push-through recess 5.

[0114] The deflection contour 8 has the deflection slope 9, with which the locking element 6 is forced from an arrangement in the push-through recess 7 in the direction of the release position F.

[0115] The locking element 6 is moved past the recess 5 into the push-through recess 7 via the bypass channel 10. Fig. 4 shows a piece of furniture 40 with a furniture body 41 and a [missing element] relative to the furniture body.

[0116] 41 movable furniture part 2, wherein the furniture 40 has an ejection device 20.

[0117] The movable furniture part 2 has two hinged plates 42 which can be moved between a coplanar position K, in which the at least two plates

[0118] 42 are arranged in the same plane, and are movable in a parallel position P (when the two plates 42 are arranged in a receiving shaft 43), in which the at least two plates 42 are arranged parallel to each other.

[0119] The ejection device 20 is arranged on one of the two plates 42. The two levers 22 are arranged in the locked closed position S, since the two plates 42 are in the coplanar position K.

[0120] The ejection device 20 can be moved from the locked closed position S to the open pivot position G by applying pressure to the two plates 42, whereby the pressure can be applied in an area where the two plates 42 are pivotally connected to each other. After the pressure has ceased, the two plates 42 move into the open position.

[0121] A first detailed view shows a hinge 46 in an enlarged view, with the two plates 42 arranged in the coplanar position K. A limiting element 50 is arranged centrally on a hinge axis, which, in a mounted state, projects towards the furniture body 41. The limiting element 50 restricts any buckling movement of the two plates 42, when they are in the coplanar position K relative to each other, in the direction of a depth of the furniture body 41.

[0122] In the coplanar position K of the two plates 42, the limiting element 50 is slightly spaced, for example by about 3 mm, from the furniture body 50. The limiting element 50 prevents excessive pressure on the two plates 42 and provides a defined release path for the ejection device 20.

[0123] A second detail view shows the hinge 46 in an enlarged view, with the two plates 42 in an over-pressed position from a coplanar position K towards the furniture body 41.

[0124] If the two plates 42 are now pressed inwards from the coplanar position K towards each other in the area of ​​the axis connecting the two plates 42 towards the depth of the furniture body 41, the limiting element 50 abuts the furniture body 50 and thus prevents a further buckling movement of the two plates 42 towards the depth of the furniture body 41.

[0125] In this way, a variably adjustable, defined trigger path for the ejection device 20 with a touch-latch function can also be provided, wherein the two plates 42 can be ejected by the ejection device 20 from the coplanar position K over a partial distance in the direction of the parallel position P.

[0126] Fig. 5a shows the ejection device 20, wherein one of the two flanges 22 has fastening means 24 for attaching the ejection device 20 to the movable furniture part 2.

[0127] The second flange 22 has a free end 25, on which two rotatably mounted rolling elements 26 are arranged to support the flange 22 against a stop surface 27 (the second rolling element 26 is hidden by the first rolling element 26 in the side view). A spacer 28 is arranged on this flange 22, and one of the spacers 28 can be positioned in different ways relative to the free end 25.

[0128] Fig. 5b shows the ejection device 20, wherein the ejection device 20 has a first part 29a of a holding device 30, which is operatively connected to a second part 29b of the holding device 30 arranged on the furniture body 41. The part 29a of the holding device 30 has a permanent magnet 31 and the other part 29b is partially metallic. The first part 29a of the holding device 30 is arranged on an outer surface 32 of the ejection device 20.

[0129] Fig. 6a shows the furniture 40, with the ejection device 20 in the unlocked push-through position D, since the two plates 42 are in the parallel position P.

[0130] The receiving shaft 43, arranged laterally on the side of the furniture body 41, is intended to receive the furniture part 2 which can be moved in the parallel position P.

[0131] When the two plates 42 are pulled out of the receiving shaft 43, the ejection device 20 with the locking device 1 in overpressure position U ends the parallel position P and the two plates 43 move into the spread position.

[0132] An ejection device 49 is provided for ejecting the two plates 42 from the receiving shaft 43.

[0133] Fig. 6b shows an enlarged section of Fig. 6a, with the ejection device 20 in the push-through position D and the locking device 1 arranged on the ejection device 20 in the overpressure position U.

[0134] Fig. 7 shows the ejection device 20 in its individual components. The locking element 6 is in the form of a bent pin; however, a bolt-shaped locking element 6 is also possible.

[0135] The energy storage devices 3 in the form of springs 35 are arranged on axes, with the axis of symmetry of one of the two axes defining the axis of rotation of the wing 22 of the ejection device 20.

[0136] The heart-shaped locking contour 4, the push-through recess 7, and the deflection contour 8 are arranged on a common base 12. Fig. 8a shows an ejection device 20 according to a further embodiment, wherein the ejection device 20 is arranged between the furniture body 41 and the movable furniture part 2 – consisting of two plates 42. A detail view of the ejection device 20 with internal contours is shown on the right.

[0137] The ejection device 20 is in the closed position S, with the locking device 1 arranged on the ejection device 20 being in the locked position V. The two plates 42 are therefore in the coplanar position K.

[0138] Fig. 8b shows the ejection device 20 in the push-through position D, with the locking device 1 in the overpressure position U.

[0139] Fig. 8c shows a position of the two plates 42 between the coplanar position K and the open position, wherein the rolling elements 26 are supported on the furniture body and one of the two lobes 22 is connected to the movable furniture part 2 via fastening means 24.

[0140] Fig. 8d shows the open position of the movable furniture part 2, with the ejection device 20 arranged on the movable furniture part 2 in the open pivot position G.

[0141] Fig. 9a shows the movable furniture part 2 in the lateral receiving shaft 43, with the two plates in the parallel position P, the ejection device 20 in the push-through position D and the locking device 1 in the overpressure position U.

[0142] Fig. 9b shows the position of the movable furniture part 2 in which the two panels 42 have been pulled out of the receiving shaft 43 and the ejection device 20 spreads the two panels 42 in the direction of the spread-open position, since the locking device 1 in the receiving shaft 43 is not in the locked position V. Fig. 9c shows the position of the movable furniture part 2 in which the ejection device 20 is in the open pivot position G and is just in contact with both panels 42.

[0143] Fig. 10a shows the ejection device 20 in an enlarged view, with the locking device 1 and the internal components visible in the illustration.

[0144] Fig. 10b shows the ejection device 20, wherein a spreading element 33 is arranged between the two wings 22 and a further energy storage device 34 is provided. The two wings 22 are subjected to force by the further energy storage device 34 via the spreading element 33.

[0145] The energy storage device 3 and the further energy storage device 34 are designed in the form of springs 35, wherein the energy storage device 3 is a torsion spring and the further energy storage device 34 is a spiral spring.

[0146] The additional energy storage device 34 is arranged between a stationary energy storage support 36 and a movable energy storage support 37 relative to it. The additional energy storage device 34 is arranged on a cross member 38 connected to the spreader element 33, the cross member 38 simultaneously serving as the movable energy storage support 37. The cross member 38 includes two roller elements 39 for movement along a flange 22. The spreader element 33 is pivotally connected to the cross member 38 and one of the flanges 22.

[0147] The power storage unit 3 and the additional power storage unit 34 can be recharged by moving one of the two Flebel 22.

[0148] Fig. 11a shows the ejection device 20 in the open pivot position G and Fig. 11b shows the ejection device 20 in the forced position D. Fig. 12a shows a piece of furniture with the movable furniture 2 in the coplanar position K.

[0149] Fig. 12b shows the furniture with a trolley 45, the trolley 45 being movable along a horizontally arranged rail 44. The trolley 45 is coupled to one of the two plates 42. A hinge 46 is provided to pivotally connect the two plates 42 to each other.

[0150] The carriage 45, together with the movable furniture part 2, can be lowered into the receiving shaft 43. During movement along the rail 44, the carriage 45 is supported by a guide roller 47 against a guide 48. The movement of the spreading element 33 can be locked by means of the carriage 45.

[0151] Fig. 12c differs from Fig. 12b in that one side wall of the receiving shaft 43 and one of the two plates 42 have been removed for clarity in order to reveal the ejection device 20 and the structural design.

[0152] Fig. 13 shows the ejection device 20 according to the embodiment shown in Fig. 8a disassembled into its individual components. In this embodiment, the locking element 6 is bolt-shaped.

[0153] The locking device 1 according to this embodiment is designed in a mirror-symmetrical manner, comprising two heart-shaped locking contours 4, two deflection contours 8, two entry openings 11, two push-through recesses 7 and two bypass channels 10.

[0154] Fig. 14a shows the ejection device 20 in closed position S with internal component contours and an enlarged detail section of the locking device 1. The locking device 1 is in the locking position V.

[0155] Fig. 14b shows the ejection device 20 with the locking device 1 in release position F. Fig. 15 shows a moment diagram of an ejection device 20 with two further energy storage devices 34 in the form of two springs 35 (coil springs), which are coupled to the two spreading elements 33 (see, for example, Fig. 11a), and two energy storage devices 3 in the form of two springs 35 (torsion springs), which are arranged on a joint axis.

[0156] Since the ejection device 20 has a symmetrical design, the forces acting on a spreading element 33, caused by a coil spring and a torsion spring, are shown in diagram form in the moment diagram. The analysis is not limited to a further force storage device 34 in the form of a coil spring and force storage device 3 in the form of a torsion spring.

[0157] The abscissa indicates an angle β in degrees between the two lobes 22, which is caused by a movement of the spreading element 33. The ordinate indicates an acting moment in Nm, which acts on the lobe 22 via the spreading element 7.

[0158] A characteristic curve with rectangular data points describes the moment produced by the coil spring, and a characteristic curve with light, circular data points describes the moment produced by the torsion spring. A characteristic curve with dark, circular data points describes the sum of the two underlying characteristic curves and indicates the moment on the lever 22 as it varies with angle β.

[0159] In the coplanar position K and essentially in the parallel position P, no moment caused by the coil spring acts on the Flebel 22. Between the coplanar position K and the open position, as well as between the parallel position P and the spread position, a decreasing acting moment of the torsion spring partially compensates for an increasing acting moment of the coil spring, thereby generating a harmonious moment distribution on the Flebel 22.

[0160] Furthermore, in the closed position S of the ejection device 20, due to the small angle β between the spiral spring and the lever 22, essentially no moment of the spring 35 acts on the spreading element 33 and the lever 22. This ensures a gentle opening of the movable furniture part 2 by the ejection device 20 from the coplanar position K and a gentle spreading from the parallel position P, since the lever 22 is not subjected to a sudden force by the spring 35.

[0161] Reference symbol list:

[0162] Locking device (1) Furniture part (2)

[0163] Energy storage device (3) Locking contour (4)

[0164] Heart hollow (5)

[0165] Locking element (6) Push-through recess (7)

[0166] Deflection contour (8)

[0167] Deflection slope (9)

[0168] Bypass channel (10)

[0169] Entrance opening (11) Base (12)

[0170] Ejection device (20)

[0171] Component (21)

[0172] Lever (22)

[0173] Angle (23) Fasteners (24)

[0174] End (25)

[0175] rolling elements (26)

[0176] Stop surface (27)

[0177] Spacer (28) first part (29a) second part (29b)

[0178] Holding device (30) Permanent magnets (31) Outer surface (32) Spreading element (33) Additional energy storage device (34)

[0179] Spring (35) stationary power storage bracket (36) movable power storage bracket (37) crossbar (38)

[0180] Rolling element (39)

[0181] Furniture (40) Furniture carcass (41)

[0182] Plates (42)

[0183] Access shaft (43)

[0184] Rail (44)

[0185] Carriage (45) Hinge (46)

[0186] Leadership role (47)

[0187] Leadership (48)

[0188] Ejection device (49) Limiting element (50) Locking position (V) Overpressure position (U)

[0189] Release position (F) Open pivot position (G) Closed position (S) Push-through position (D) Coplanar position (K) Parallel position (P)

Claims

Patent claims 1. Locking device (1) for releasably locking two furniture parts (2) movable relative to each other against the force of a power storage device (3), comprising a heart-shaped locking contour (4) with a heart-shaped recess (5) and at least one locking element (6) movable relative to the heart-shaped locking contour (4), in particular a bolt-shaped one, which can be arranged in a locking position (V) in the heart-shaped recess (5) of the heart-shaped locking contour (4), wherein the at least one locking element (6) can be moved from the locking position (V) into an overpressure position (U) from the heart-shaped recess (5) into a release position (F), characterized in that the locking device (1) has a push-through recess (7) separate from the heart-shaped recess (5), in which the at least one locking element (6) can be arranged, and at least one has a deflection contour (8),which blocks movement of at least one locking element (6) from the push-through recess (7) into the heart recess (5).

2. Locking device (1) according to claim 1, wherein the at least one deflection contour (8) has at least one deflection slope (9) with which the at least one locking element (6) can be forced from an arrangement in the push-through recess (7) in the direction of the release position (F).

3. Locking device (1) according to claim 1 or 2, wherein the locking device (1) has at least one bypass channel (10) through which the at least one locking element (6) can be moved past the heart recess (5) into the push-through recess (7).

4. Locking device (1) according to one of claims 1 to 3, wherein the Locking device (1) has at least one entry opening (11) for the at least one locking element (6) and the heart-shaped locking contour (4) and the at least one deflecting contour (8) are arranged between the at least one entry opening (11) and the push-through recess (7).

5. Locking device (1) according to one of claims 1 to 4, wherein at least the heart-shaped locking contour (4), the push-through recess (7) and the at least one deflection contour (8) are arranged on a common base (12).

6. Locking device (1 ) according to one of claims 1 to 5, wherein the at least one locking element (6) is arranged on a lever (22), preferably pivotable relative to each other.

7. Ejection device (20) for a movable furniture part (2), comprising at least two components (21) movable relative to each other and at least one energy storage device (3) which is effective between the at least two components (21), characterized in that the ejection device (20) has at least one locking device (1) according to one of claims 1 to 5, wherein the heart-shaped locking contour (4) is arranged on one and the at least one locking element (6) on the other of the at least two components (21) movable relative to each other.

8. Ejection device (20) for a movable furniture part (2), comprising at least two levers (22) pivotable relative to each other, at least one energy storage device (3) which, in a charged state, exerts a force on the at least two levers (22) in the direction of an open pivot position (G), and at least one locking device (1) for releasably locking the at least two levers (22) in a closed position (S) against the force of the charged energy storage device (3), characterized in that the at least one locking device (1) is designed such that the at least two levers (22) are in a Press-through position (D), in which the levers (22) form an angle (23) enclose, which is smaller than the angle (23) of the levers (22) in the closed position (S), are freely movable relative to each other when unlocked.

9. Ejection device (20) according to claim 8, wherein the at least one locking device (1) is designed according to one of claims 1 to 5, wherein the heart-shaped locking contour (4) is arranged on one and the at least one locking element (6) on the other of the at least two levers (22) that can be pivoted relative to each other.

10. Ejection device (20) according to claim 8 or 9, wherein - one of the at least two levers (22) has fastening means (24) for attaching the ejection device (20) to the movable furniture part (2), and / or - one of the at least two levers (22) has a free end (25) on which at least one rotatably mounted rolling element (26) has been mounted for supporting the lever (22) against a stop surface (27), and / or - one of the at least two levers (22) has a free end (25) on which at least one spacer (28) is arranged, preferably wherein the at least one spacer (28) can be arranged in different positions relative to the free end (25).

11. Ejection device (20) according to one of claims 8 to 10, wherein the ejection device (20) has a first part (29a) of a holding device (30) which can be brought into operative contact with a second part (29b) of the holding device (30) which can be arranged on a piece of furniture (40), preferably - wherein one of the two parts (29a, 29b) of the holding device (30) has a permanent magnet (31) and the other of the two parts (29a, 29b) is at least partially metallic, and / or - the first part (29a) of the locking device (30) is arranged on an outside (32) of the ejection device (20).

12. Ejection device (20) according to one of claims 8 to 11, wherein at least one spreading element (33) is arranged between the at least two levers (22) and at least one further energy storage device (34) is provided, wherein the at least two levers (22) can be acted upon by the at least one further energy storage device (34) via the at least one spreading element (33).

13. Ejection device (20) according to claim 12, wherein the at least one energy storage device (3) and / or the at least one further energy storage device (34) is designed in the form of at least one spring (35).

14. Ejection device (20) according to claim 12 or 13, wherein the at least one further energy storage device (34) is arranged between a stationary energy storage device holder (36) and a power storage device holder (37) movable relative thereto, and / or the at least one further energy storage device (34) is arranged on at least one cross member (38) connected to the at least one spreading element (33), preferably wherein the at least one cross member (38) comprises at least one rolling element (39) for movement along one of the at least two levers (22).

15. Ejection device (20) according to one of claims 12 to 14, wherein the at least one spreading element (33) is pivotally connected to the at least one crossbar (38) and / or one of the at least two levers (22).

16. Ejection device (20) according to one of claims 12 to 15, wherein the at least one energy storage device (3) and / or the at least one further energy storage device (34) can be charged by a movement of at least one of the at least two levers (22).

17. Furniture (40) comprising a furniture body (41) and at least one furniture part (2) movable relative to the furniture body (41), characterized in that the furniture (40) has at least one ejection device (20) according to claims 7 to 16.

18. Furniture (40) according to claim 17, wherein - that at least one movable furniture part (2) has at least two plates (42) connected to each other by hinges, which are movable between a coplanar position (K) in which the at least two plates (42) are arranged substantially in the same plane and a parallel position (P) in which the at least two plates (42) are arranged substantially parallel to each other, - the at least one ejection device (20) is designed according to one of claims 8 to 16 and is arranged on one of the at least two plates (42), and - the at least two levers (22) are arranged in the locked closed position (S) when the at least two plates (42) are in the coplanar position (K), and are arranged in the unlocked push-through position (D) when the at least two plates (42) are in the parallel position (P).

19. Furniture (40) according to claim 17 or 18, wherein at least one receiving shaft (43), preferably arranged laterally to the side of the furniture body (41), is provided for receiving the at least one movable furniture part (2) arranged in the parallel position (P) of the at least two plates (42).

20. Furniture (40) according to one of claims 17 to 19, wherein the at least one ejection device (20) can be moved from the locked closed position (S) to the open pivot position (G) by applying pressure to the at least two plates (42), wherein it is preferably provided that the application of pressure can be carried out in an area in which the at least two plates (42) are pivotally connected to each other.

21. Furniture (40) according to one of claims 17 to 20, wherein at least one rail (44) is arranged, preferably along at least one horizontally arranged rail, A movable carriage (45) is provided which can be coupled to one of the at least two plates (42), preferably by means of at least one hinge (46), wherein it is preferably provided that the at least one carriage (45) together with the movable furniture part (2) can be lowered into the at least one receiving shaft (43), and / or the The carriage (45) is supported on a guide (48) via at least one guide roller (47) during movement along the at least one rail (44) and / or the movement of the at least one spreading element (33) can be locked by means of the at least one carriage (45).

22. Furniture (40) according to one of claims 17 to 21, wherein at least one ejection device (49) is provided for ejecting the at least two plates (42) from the at least one receiving shaft (43).