Drive device in the form of an ejection device for a furniture fitting

Abstract

The invention relates to a drive device in the form of an ejection device (1) for a furniture fitting for moving a movable furniture part (2) relative to a furniture body (3) from a closed position (4) in the direction of an open position (5), comprising - a housing (6), - an ejection device (7) for transmitting a force from the ejection device (1) to the movable furniture part (2), - a force accumulator device (8) for applying a force to the ejection device (7), - a stop (9) for limiting a movement of the ejection device (7) in the closing direction, and - an adjustment device (10), by means of which a spacing (11) between the ejection device (7) and the adjustment device (10) can be adjusted in the closed position (4), the adjustment device (10) being provided on the housing (6) and the spacing (11) between the ejection device (7) and the adjustment device (10) being adjustable in the closed position (4) via the adjustment device (10) by moving the stop (9) or the housing (6) and the ejection device (7) relative to the adjustment device (10).

Description

[0001] Drive device in the form of an ejection device for a

[0002] Furniture fitting

[0003] The invention relates to a drive device in the form of an ejection device for a furniture fitting for moving a movable furniture part relative to a furniture body from a closed position towards an open position, comprising a housing, an ejection device movable relative to the housing for transmitting force from the ejection device to the movable furniture part in the opening direction, a force storage device for applying force to the ejection device, a stop for limiting movement of the ejection device in the closing direction, wherein the housing preferably includes the stop, and an adjustment device with which a spacing of the ejection device relative to the adjustment device in the closing direction can be adjusted in the closed position, wherein the adjustment device is arranged on the housing.Furthermore, the invention relates to a piece of furniture with such a drive device and to a method for adjusting the depth of such a drive device.

[0004] To ensure an aesthetically pleasing appearance and proper movement of movable furniture components – such as drawers – it is of significant importance that furniture fronts are precisely aligned with each other and with a guide system, a furniture carcass, or the drive mechanism. When adjusting the gap between the movable furniture component and the drive mechanism or the furniture carcass, it is essential that an exact depth adjustment (in the direction of opening and closing of the movable furniture component) – particularly in the range of 0.05 mm to 8 mm – is guaranteed to enable a wide range of applications and a visually appealing appearance.In German patent EP 2 983 554 Bl, an adjustment device in the form of a depth adjustment wheel is provided for adjusting the depth of a drawer front relative to the furniture carcass. This depth adjustment wheel allows the gap between the drawer front and the furniture carcass to be adjusted within a range of 2.5 mm to ensure a uniform appearance of drawer fronts. This depth adjustment wheel is fixed to the housing of the ejector mechanism, and the position of a detent is adjustable. A particular disadvantage of this design is that considerable dexterity is required from the installer to account for the floating bearing of the drawer on the guide system and to achieve precise depth adjustment of the ejector mechanism within the limited adjustment range of 2.5 mm.

[0005] In the WO 2019 / 056035 Al standard, a depth adjustment wheel is deliberately omitted in order to bridge a tolerance range of up to 5 mm kinematically with each closing movement using a coupling device located between a transmission device and a release mechanism. The drive unit therefore readjusts itself with each locking operation via the coupling device, requires a complex locking mechanism, and does not ensure a uniform gap between the drawer front and the furniture carcass. The focus here is on guaranteeing proper function of the drive unit within a limited adjustment range. A disadvantage, similarly, is that adjusting the gap between the drawer and the furniture carcass, or the depth of the ejection device, is complex and dependent on the installer's skill as well as manufacturing tolerances in the guide system.The objective technical object of the present invention is therefore to provide an improved ejection device compared to the prior art, as well as a piece of furniture and a method for depth adjustment, in which the disadvantages of the prior art are at least partially eliminated, and which are characterized in particular by the possibility of a particularly convenient, precise and / or uniform adjustment of a large number of furniture fronts relative to a furniture carcass or carcasses.

[0006] This problem is solved by the features of claim 1.

[0007] According to the invention, the spacing of the ejection device relative to the adjustment device in the closed position is adjustable via the adjustment device by means of a , preferably substantially translational , displacement of the stop or the housing and the ejection device relative to the adjustment device, preferably in an overpressure position downstream of the closed position in the closing direction.

[0008] This makes it possible to precisely pre-adjust the gap between the movable furniture part and the furniture body by means of a distance between the ejection device and the stop, and so that during the installation of the furniture an installer only has to press the movable furniture part against the furniture body in order to conveniently transfer the distance between the ejection device and the stop to the gap between the movable furniture part and the furniture body in a one-handed movement.

[0009] Furthermore, the assembly and depth adjustment of the drive unit or a variety of movable furniture components can be carried out particularly quickly and easily. For example, a predefined standard dimension for the gap between the movable furniture component and the furniture carcass is determined by the drive unit itself and is automatically generated when the movable furniture component or the ejection mechanism is first moved into a fully compressed position behind the closed position. This initial compression movement can occur during the initialization of the drive unit after the movable furniture component has been attached to the furniture carcass, with the ease of adjustment being increased by the automation of the adjustment process.

[0010] In general, the overpressure setting can be located in relation to the movable furniture part, preferably in relation to the ejection device – particularly preferably in relation to the housing. For example, the ejection device can be guided in a guide track into an overpressure recess or channel.

[0011] Preferably, the ejection device is freely movable relative to the housing between a closed position and an open position and / or an overpressure position, preferably during adjustment via the adjustment device, and is guided by a guide track. It is preferably provided that the guide track (in conjunction with the housing) has a detent position for the closed position (for the drive device or the movable furniture part). In other words, it is preferably provided that, during adjustment via the adjustment device, there is no fixing of the ejection device relative to the housing other than a contact between the ejection device and the stop or the housing to limit relative movement.

[0012] Furthermore, this depth adjustment of the stop or housing relative to the adjustment device, for the precise and simple transfer to the spacing of the ejection device relative to the adjustment device – preferably fixed to a guide – only needs to be performed once and can be canceled and repeated if necessary (as a reset option). In principle, however, only a single depth adjustment is required, which does not necessitate any design modifications beyond the adjustment device itself – for example, as an add-on for retrofitting.

[0013] Furthermore, a variety of drive devices can be equipped with the same spacing between the stop and the ejection mechanism, which are implemented in an identical or uniform manner in the gap between the movable furniture part and the furniture carcass. Thus, an installer does not need to monitor the relative position of numerous furniture fronts; flexible adjustment of the gap is possible, and if necessary, an additional adjustment device (possibly for fine-tuning the movable furniture part relative to the furniture carcass) can be provided to accommodate, for example, special dimensions or any unforeseen play in the guide system. However, it is generally not necessary to adjust each existing drive device to the desired requirements, motion technologies, or surrounding movable furniture parts by turning a depth adjustment wheel.This also prevents incorrect settings during assembly by means of a preset adjustment on the drive device.

[0014] The adjustment device is particularly preferably located at least partially behind the housing of the ejection device in the closing direction.

[0015] Preferably, the adjustment device sets a gap of approximately 2.5 mm between the movable furniture part and the furniture body in the closed position. An additional advantage is the low cost of this concept for automatic self-depth adjustment of the drive mechanism for the movable furniture part, as no modification to the kinematics of the drive mechanism itself is required and it can be retrofitted to existing drive mechanisms as an add-on. Furthermore, the positioning of the adjustment device and its housing can be flexibly adjusted. The adjustment device can also compensate for tolerances / play and is applicable and adjustable to a wide range of gaps between the movable furniture part and the furniture body. A high degree of precision on the part of the installer is not required when adjusting the drive mechanism.

[0016] Since the position of the housing or the stop can be moved, a wide range of possible design configurations for the adjustment device are possible, without requiring complex or numerous components. For example, the adjustment device can operate via a wheel or a change in the position of an element with increasing volume in various versions. In general, the spacing can be locked, released, and adjusted over a wide range in small, discrete, or continuous increments—all while simultaneously performing a one-time automatic adjustment of the depth of the movable furniture part connected to the drive unit.

[0017] In general, it is irrelevant at which point the distance between the ejection device and the adjustment device is defined or fixed, provided that the degree of distance between the ejection device and the adjustment device (or the guide device or the furniture body) in the closed position, or as a result between the movable furniture part and the furniture body in the closed position, is changeable. For example, the distance in the closing direction can be assumed to be between an outer edge of the ejection device facing the movable furniture part and an outer edge of the adjustment device facing the movable furniture part. Generally, the positioning of the housing is shifted on the guide device or relative to the furniture body; it is also conceivable to simply move / shift the stop of the housing for the purpose of adjustment.

[0018] A depth adjustment wheel is generally not strictly necessary. The further the ejection mechanism is adjusted towards the stop, the further the furniture front of the movable part is offset towards the open position when closed. The dimension can be preset to any desired value.

[0019] Particularly preferably, the ejection device is a mechanically tensioned ejection device, partially between the closed position or the overpressure position and the open position, via at least one spring, away from drive means permanently attached to the movable part of the furniture, whereby in general an alternative or additional force storage device may also be provided.

[0020] As stated at the outset, protection is also sought for a piece of furniture comprising a furniture carcass, at least one furniture part movable relative to the furniture carcass, preferably a drawer, and at least one drive device according to one of the preceding claims for applying force to the at least one movable furniture part from a closed or over-pressure position to an open position. The furniture fitting is particularly preferably in the form of a guide device comprising a carcass rail and a drawer rail movable relative to it, although the furniture is generally not limited to a drawer slide guide. The drive device makes it possible to automatically adjust the depth of several movable furniture parts—such as drawers—relative to each other by means of a sliding movement.

[0021] As stated at the outset, protection is also sought for a method for adjusting the depth of such a drive device, preferably of a movable furniture part interacting with the drive device relative to a guide device of a furniture body, characterized by the following method steps:

[0022] - the ejection device is moved or shifted, preferably by the movable furniture part or from the closed position, into an overpressure position, so that the ejection device comes into contact with the stop of the housing, preferably the movable furniture part comes into contact with the furniture body, and

[0023] - The distance between the ejection device and the adjustment device in the closed position is automatically adjusted by the adjustment device via a relative movement between the housing or the stop and the adjustment device.

[0024] The two process steps can temporarily overlap, with the adjustment of the depth of the drive device or the movable furniture part preferably taking place between the contacting of the stop and the contacting of the furniture body.

[0025] The present invention is not limited to a number of component parts. The features of the device are applicable to the features of the method and vice versa. Advantageous embodiments of the invention are defined in the dependent claims.

[0026] According to an advantageous embodiment of the invention, it is provided that the spacing of the ejection device relative to the adjustment device is adjustable by means of the ejection device, in the case of an ejection device that is motion-coupled with the stop or in the case of an ejection device that is in contact with the stop.

[0027] The ejection device can thus act as a transmission means for the displacement of the stop or the housing relative to the adjustment device in order to ensure proper positioning of the ejection device - via a closing movement through the movable furniture part.

[0028] Advantageously, it is provided that the spacing of the ejection device relative to the adjustment device is automatically adjustable when the ejection device moves in the closing direction, preferably when it is forced out of the closed position in the closing direction.

[0029] This ensures that, during the installation of the movable furniture part, the installer only needs to maneuver the movable furniture part into the stop position in the overpressure position of the drive device in order to automatically generate a uniform gap between the movable furniture part and the furniture body once via the drive device.

[0030] It has proven advantageous that the distance between the ejection device and the adjustment device can be set to a predefined value, preferably being that the predefined value depends on a preset distance between the ejection device and the stop in the closed position.

[0031] For example, the desired spacing can be stored in the adjustment device. Preferably, the distance between the ejection device and the stop, which is desired or required for the ejection mechanism, is transferred via the adjustment device in such a way that this preset value is conveyed as the gap between the movable furniture part and the furniture body by the adjustment device – for example, when pressing the movable furniture part against the furniture body.

[0032] Overpressure setting.

[0033] If, for example, the ejection device is mounted on the guide device and the movable furniture part is connected to the ejection device, a gap of (for example) 5 mm may exist between the movable furniture part and the furniture body in the closed position, whereby the desired distance between the movable furniture part and the furniture body in the closed position may be 2.5 mm and may correspond to a predefined distance between the ejection device and the stop. If the movable furniture part is moved into the overpressure position and pressed against the furniture body, the stop (if applicable, with the ejection device in contact) or the housing shifts by 2.5 mm in the direction of the separate adjustment device (preferably located behind the housing in the closing direction and / or fixed in place), whereby a gap of the desired (for example) 2.5 mm then exists between the movable furniture part and the furniture body in the closed position.

[0034] According to an advantageous embodiment of the present

[0035] The invention provides that the spacing of the ejection device relative to the adjustment device is adjustable by up to 8 mm, preferably in the range between 1.5 mm and 3.5 mm and / or with an accuracy between 0.05 mm and 0.15 mm.

[0036] Accuracy can be achieved, for example, by an additional locking device (in addition to the locking mechanism of the ejection device) acting as a backstop with discrete detent positions. Continuous adjustability is also conceivable – for example, by sliding along an inclined plane.

[0037] According to an embodiment of the invention, it has proven advantageous that the drive device comprises an adjustment device separate from the adjustment device for adjusting a distance of the ejection device from the stop, wherein the adjustment device is arranged on the housing, preferably the stop, and / or the ejection device.

[0038] For example, the adjustment device can be designed in the form of a depth adjustment wheel known from the prior art. Preferably, the adjustment device is arranged on the ejection device or the stop and displaces the ejection device relative to the stop or the housing. This allows for special dimensions in furniture or fine adjustments, whereby the fine adjustment is independent of the automatic adjustment via the adjustment device, but can interact indirectly when the adjustment device is activated by actuation via the stop in such a way that the fine adjustment is still present after actuation of the adjustment device and / or can be changed subsequently.

[0039] One advantageous option is that the

[0040] The adjusting device is spatially separated from the adjusting mechanism and / or includes a worm gear, an adjusting wheel, a threaded pin or an eccentric.

[0041] This allows the installer to adjust the spacing particularly precisely by turning – for example, without tools or using a screwdriver.

[0042] Preferably, the drive device includes a locking device with which a movement of the ejection device in the opening direction can be inhibited, wherein the locking device can be unlocked by overpressure movement in the closing direction.

[0043] With a touch-latch function featuring an overpressure area behind the closed position, no handle is required to move the movable furniture part into the open position, and in combination with a damping device, a particularly harmonious movement can be ensured.

[0044] It is particularly preferred that the adjusting device includes a further locking device, preferably a detent device or a backstop, with which a distance of the ejection device relative to the adjusting device in the closed position can be secured by the displacement of the stop or the housing relative to the adjusting device.

[0045] The additional locking device prevents the need to readjust the spacing or the spacing from changing undesirably, for example, due to vibrations. Furthermore, a reset function (e.g., manually operated) can be implemented via the additional locking device. In one embodiment of the invention, the adjustment device has a separate housing, which can be attached to the housing as an add-on or arranged on a support together with the housing.

[0046] Separate housings make it particularly easy to retrofit existing drive devices, for example by connecting a return spring from the additional housing to the housing as a connecting link.

[0047] According to a preferred embodiment of the invention, the adjusting device comprises a resetting device with which a spacing of the ejection device relative to the adjusting device determined by the adjusting device can be removed by releasing the further locking device, wherein it is preferably provided that the resetting device comprises a leaf spring or a lever or a slide or a latch or a wheel.

[0048] The reset device makes it possible to cancel and redefine a spacing already set via the adjustment device - for example, to adjust a changed distance between the ejection device and the stop or a different gap between the movable furniture part and the furniture body.

[0049] It has proven advantageous that the adjusting device includes a return spring operatively connected to both the adjusting device and the housing, which allows the distance between the ejection device and the adjusting device to be increased. This eliminates the distance separating the ejection device from the adjusting device in the closed position, allowing the desired distance to be subsequently set by readjustment. The return spring is designed to be sufficiently wide to also accommodate other energy storage devices (e.g., fluid energy storage devices).

[0050] Furthermore, it is preferably provided that the spacing is adjustable by means of a translation device, an adjusting wheel, an inclined plane or a worm gear.

[0051] The translation device allows for particularly favorable influence on the end position of the ejection device. Alternatively or additionally, the translation device can be used to translate small displacements of the stop in the adjustment device in a specific ratio, for example, to achieve smaller adjustment intervals.

[0052] In a preferred embodiment of the invention, it is provided that the adjustment of the distance between the ejection device and the adjustment device is made to a value predefined by the ejection device or only once.

[0053] The predefined value, which is set once until the spacing is reset, can be set by contact between the movable furniture part and the furniture body and / or be determined by the distance between the stop and the ejection device in the closed position.

[0054] According to an advantageous embodiment of the invention, a reset device is actuated, whereby a return spring eliminates a defined distance between the ejection device and the adjustment device.

[0055] It is particularly preferred that the adjustment of the spacing of the ejection device relative to the adjustment device is carried out once for a large number of movements of the ejection device into the closed position.

[0056] The generated spacing can be mechanically stored in the adjustment device, for example, by means of an additional locking device. If a discrete adjustment interval is provided via the adjustment device, changes in the spacing during operation can be prevented.

[0057] It is preferably provided that in an upstream or downstream process step, preferably in the closed position, a distance between the ejection device and the stop is adjusted by means of an adjusting device.

[0058] 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 shown in the drawings. These show:

[0059] Fig. 1 shows a piece of furniture according to a preferred embodiment with at least one drive device according to a preferred embodiment in a perspective view.

[0060] Figs. 2a-3b show a drive device according to a preferred embodiment with an adjusting device comprising a worm gear in a perspective view connected to a guide device, as well as in different top views. Figs. 3c, 3d show a drive device according to a further preferred embodiment with a

[0061] Translation service,

[0062] Figs. 4a-4c show a drive device according to a further preferred embodiment with an adjusting wheel in top views.

[0063] Figs. 5a-5n show varying constructive embodiments of preferred examples of

[0064] Adjustment devices for according to the invention

[0065] Drive devices in detailed views,

[0066] Fig. 6a the drive device according to the

[0067] From the exemplary illustration according to Fig. 4a in sectional view,

[0068] Figs. 6b-6f show different design configurations of adjustment devices for fine adjustment of the spacing in addition to adjustment by an adjustment device according to the invention.

[0069] Figs. 7a-7h show detailed sections of the drive device according to the embodiment shown in Fig. 4a in different positions to visualize the setting and resetting process by the setting device.

[0070] Fig. 1 shows a piece of furniture with a cabinet 3, a movable furniture part 2 in the form of a drawer relative to the cabinet 3, and a drive device. Above the drawer shown, another drawer is provided, which can be driven by the visible drive device – although it is hidden for illustrative purposes. The number of drive devices per movable furniture part 2 is generally arbitrary. Only one drive device per movable furniture part 2 may be provided, or two drive devices – connected, for example, via a synchronizing device – may be provided on both side walls of the cabinet 3. The drive device is designed to push the movable furniture part 2 from a closed or over-pressure position to an open position.

[0071] Fig. 2a shows the drive device in the form of the ejection device 1 for the furniture fitting in the form of a guide device 33 connected to the guide device 33 for moving the movable furniture part 2 relative to the furniture body 3, comprising a housing 6 which is connected to an adjustment device 10 and the guide device 33.

[0072] Fig. 2b shows the drive device coupled to the guide device 33 from above, showing that the ejection device 1 comprises an ejection mechanism 7 movable relative to the housing 6 for transmitting force from the ejection mechanism 1 to the movable furniture part 2 in the opening direction and a stop 9 for limiting movement of the ejection mechanism 7 in the closing direction. The housing 6 includes the stop 9, although this is not strictly necessary.

[0073] With the adjusting device 10, a spacing 11 (see, for example, Fig. 7a) of the ejection device 7 relative to the adjusting device 10 in the closing direction can be adjusted in the closed position 4, wherein the adjusting device 10 is arranged on the housing 6 - generally indirectly or directly.

[0074] Fig. 2c shows the ejection device 1 separated from the guide device 33, wherein the spacing 11 of the ejection device 7 relative to the adjustment device 10 in the closed position 4 is adjustable via the adjustment device 10 by a substantially translational displacement of the stop 9 and the housing 6 relative to the adjustment device 10 in an overpressure position 12 downstream of the closed position 4 in the closing direction. The closed position 4 can be defined by a closed position of the movable furniture part 2 in which a gap to the furniture body 3 exists and the ejection device 1 is locked or can be unlocked by overpressure movement.

[0075] Fig. 3a shows a preferred embodiment of the adjusting device 10, wherein the spacing 11 of the ejection device 7 relative to the adjusting device 10 is adjustable by means of the ejection device 7, with the ejection device 7 being motion-coupled to the stop 9 and after contacting the stop 9 by the ejection device 7.

[0076] The distance 11 of the ejection device 7 relative to the adjustment device 10 is adjustable to a predefined value, wherein the predefined value depends on a preset distance 13 between the ejection device 7 and the stop 9 in the closed position 4 or is given by the distance between the ejection device 7 and the adjustment device 10 in the overpressure position 12 minus the distance 13 in closed position 4 .

[0077] Fig. 3b shows, in an enlarged detail view, that the adjusting device 10 comprises a plurality of return springs 29 operatively connected to the adjusting device 10 and the housing 6, with which the distance 11 of the ejection device 7 relative to the adjusting device 10 can be increased (when a locking mechanism of the adjusting device 10 is released). In general, one return spring 29 is sufficient for the function of returning the housing 6 or the stop 9 relative to the adjusting device 10. The distance 11 is adjusted by means of a worm gear 32.

[0078] Figures 3c and 3d show an ejection device 1 with an adjusting device 10, in which the spacing 11 is adjustable by means of a transmission device 34 via the adjusting device 10. A first screw 32 is rotated by the transmission device 34 through a relative displacement of the ejection device 7 and the housing 6 relative to each other. This first screw 32 rotates a second screw 32, which in turn presses a transmission element (for example, in the form of a rod) against the stop 9, so that the stop 9 is moved relative to the ejection device 7. According to this embodiment, a toothed connection engages in a circular segment-shaped element for transmitting the motion between the ejection device 7 and the stop 6.

[0079] In general, a leaf spring can be arranged in the area of ​​the translation device 34 as a return spring 29 for a reset function.

[0080] According to this embodiment, the two worms 32 are coupled via a body with two tapered ends.

[0081] The adjusting device 10 has a further housing 21 separate from the housing 6, which can be attached to the housing 6 as an add-on or is arranged on a carrier 22 together with the housing 6.

[0082] According to this embodiment, the housing 6 can remain stationary relative to the further housing 21, although in general a displacement of the housing 6 relative to the further housing 21 is preferred. Figs. 4a to 4c show an embodiment of an adjustment device with an adjusting wheel 30.

[0083] The drive device comprises an adjusting device 14, separate from the adjusting device 10, for adjusting a distance 13 of the ejection device 7 relative to the stop 9, wherein the adjusting device 14 is arranged on the ejection device 7. Generally, the adjusting device 14 can also be arranged on the stop 9 or the housing 6.

[0084] In Fig. 4b it can be seen that the adjusting device 10 is coupled to the housing 6 via a rack and pinion, wherein the spacing 11 of the ejection device 7 relative to the adjusting device 10 is automatically adjustable when the ejection device 7 moves in the closing direction during an overpressure movement from the closed position 4 in the closing direction.

[0085] The spacing 11 of the ejection device 7 relative to the adjustment device 10 can be changed up to 8 mm and with an accuracy between 0.05 mm and 0.15 mm.

[0086] Figures 5a to 5n show different preferred embodiments of the adjusting device 10. The individual component parts can be provided alternatively or in combination, and not all component parts are necessarily required. In Figure 5a, the adjusting device 10 comprises a worm gear 32 and a reset device 23 in the form of a lever 25. The adjusting device 10 also includes a further locking device 20 in the form of a toothed section as a backstop or detent device, in addition to a locking device 19 for the ejection device 7. The adjusting device 10 comprises a transmission device 34 and a return spring 29. For example, the transmission device 34 and the reset device 23 can be omitted.

[0087] Fig. 5b differs from Fig. 5a in that the reset device 23 is in the form of a latch 27. In Fig. 5c, the adjusting device 10 comprises an inclined plane 31, with the reset device 23 being in the form of a latch 27. In Fig. 5d, the adjusting device comprises a worm gear 32, with the spacer 11 being able to be released by a reset device 23 in the form of a lever 25 in conjunction with the return spring 29. In Fig. 5e, the reset device 23 comprises a wheel 28, with a leaf spring being provided on the transmission device 34 for the reset function of the spacer 11, either alternatively or additionally.

[0088] Fig. 5f shows the combination of an inclined plane 31 and a reset device 23 in the form of a slide 26. Fig. 5g shows the embodiment according to Fig. 5e with the second worm 32 exposed, where Fig. 5h shows a transmission means between the two worms 32 displaced compared to Fig. 5e, Fig. 5i shows both worms 32 exposed, and Fig. 5j shows the first worm 32 exposed below the wheel 28 in a changed position of the adjusting device 10 compared to Fig. 5e. Fig. 5k and Fig. 51 show an adjusting device 10 with two worms 32 with a reset device 23 in the form of a lever 25 in different positions. Fig. 5m and Fig. 5bFigure 5n shows an adjusting device 10 with an inclined plane 31 (with toothing as a further locking device 20) and a resetting device 23 in the form of a bolt in different positions - due, for example, to the return spring 29 or a displacement of the stop 9 relative to the.

[0089] Adjustment device 10. In Fig. 6a, a housing side wall of the housing 6 is hidden, showing that the ejection device 1 comprises a force storage device 8 for applying force to the ejection device 7 and a locking device 19, with which a movement of the ejection device 7 in the opening direction can be inhibited, wherein the locking device 19 can be unlocked by overpressure movement in the closing direction.

[0090] The adjusting device 10 comprises a further locking device 20 in the form of a detent device as a backstop according to this embodiment, with which a distance 11 of the ejection device 7 relative to the adjusting device 10, determined by the displacement of the stop 9 or the housing 6 relative to the adjusting device 10, can be secured in the closed position 4.

[0091] The adjusting device 10 has a reset device 23, with which a distance 11 of the ejection device 7 relative to the adjusting device 10, defined by the adjusting device 10, can be released by releasing the further locking device 20. In this embodiment, the reset device 23 is in the form of a lever 25.

[0092] The adjusting device 14 is spatially spaced away from the adjusting device 10.

[0093] Fig. 6b to Fig. 6d show an adjusting device 14 which includes an eccentric 18 for changing a distance 13.

[0094] In Fig. 6e, the adjusting device 14 comprises a worm gear 15 which can be actuated with a screwdriver. Fig. 6f shows an adjusting device 14 that can be actuated without tools and which comprises an adjusting wheel 16.

[0095] In general, an adjusting device 14 can be mounted on the housing 6, wherein the spacing 13 can be changed, for example, via a threaded pin.

[0096] Figures 7a to 7h illustrate the adjustment and reset process of the adjustment device 10 based on the design of the adjustment device 10 according to Figure 6a, whereby an exemplary method for adjusting the depth of the drive device or of a movable furniture part 2 interacting with the drive device relative to a guide device 33 of a furniture body 3 can be explained as follows: Starting from the closed position 4 according to Figure 7a, the ejection device 7 is moved by the movable furniture part 2 into an overpressure position 12 according to Figure 7b, so that the ejection device 7 comes into contact with the stop 9 of the housing 6 and the movable furniture part 2 comes into contact with the furniture body 3.Through a relative movement between the housing 6 or the stop 9 and the adjusting device 10, the distance 11 of the ejection device 7 relative to the adjusting device 10 in the closed position 4 is automatically adjusted by the adjusting device 10, whereby in the course of adjusting the distance 11, in the illustrated embodiment, the locking mechanism according to Fig. 7c is temporarily released and the adjustment of the distance 11 of the ejection device 7 relative to the adjusting device 10 is automatically made to a value predefined by the ejection device 1, which is also determined by the contact of the furniture body 3 by the movable furniture part 2.

[0097] In Fig. 7d the further locking device 20 is activated, wherein in Fig. 7e the kinematics in connection with a heart curve contour in conjunction with the ejection device 7 ensures the return of the ejection device 7 to the stop 9 and the spacing 11 in closed position 4 is secured by the further locking device 20.

[0098] In Fig. 7f, the reset device 23 is actuated, whereby a return spring 29 removes the fixed distance 11 of the ejection device 7 relative to the adjustment device 10 and resets it to the initial position according to Fig. 7g. After the actuation of the reset device 23 is complete, the initial position of the ejection device 1 according to Fig. 7a is restored in Fig. 7h. The reset device 23 can be spring-loaded.

[0099] The adjustment of the spacing 11 of the ejection device 7 relative to the adjustment device 10 can thus be carried out once for a large number of movements of the ejection device 7 into the closed position 4 - until, if necessary, the reset device 23 is actuated.

[0100] In a preceding or subsequent process step of adjusting the distance 11, the adjusting device 14 can, for example in the closed position 4, adjust a distance 13 of the ejection device 7 from the stop 9.

Claims

Patent claims 1. Drive device in the form of an ejection device (1) for a furniture fitting for moving a movable furniture part (2) relative to a furniture body (3) from a closed position (4) towards an open position (5) , comprising - a housing (6) , - a movable ejection device (7) relative to the housing (6) for transmitting force from the ejection device (1) to the movable furniture part (2) in the opening direction, - a power storage device (8) for Force application to the ejection device (7) , - a stop (9) to limit movement of the ejection device (7) in the closing direction, wherein the housing (6) preferably includes the stop (9), and - an adjusting device (10) with which a spacing (11) of the ejection device (7) relative to the adjusting device (10) in the closing direction can be adjusted in the closed position (4), wherein the adjusting device (10) is arranged on the housing (6), characterized in that the spacing (11) of the ejection device (7) relative to the adjusting device (10) in the closed position (4) can be adjusted via the adjusting device (10) by a, preferably substantially translational, displacement of the stop (9) or of the housing (6) and of the ejection device (7) relative to the adjusting device (10), preferably in an overpressure position (12) downstream of the closed position (4) starting from the closed position (4).

2. Drive device according to claim 1, wherein the spacing (11) the ejection device (7) opposite the adjustment device (10) - by means of the ejection device (7) or - in the case of a motion-coupled ejection device (7) with the stop (9) or - is adjustable when the ejection device (7) is in contact with the stop (9).

3. Drive device according to claim 1 or 2, wherein the spacing (11) of the ejection device (7) relative to the adjustment device (10) is automatically adjustable upon movement of the ejection device (7) in the closing direction, preferably upon overpressure movement from the closed position (4) in the closing direction and / or substantially to 2.5 mm.

4. Drive device according to one of the preceding claims, wherein the spacing (11) of the ejection device (7) relative to the adjustment device (10) is adjustable to a predefined value, preferably being that the predefined value depends on a preset distance (13) between the Ejection device (7) and the stop (9) in the Closed position (4) is present.

5. Drive device according to one of the preceding claims, wherein the spacing (11) of the ejection device (7) relative to the adjustment device (10) is changeable by up to 8 mm, preferably in the range between 1.5 mm and 3.5 mm and / or with an accuracy between 0.05 mm and 0.15 mm.

6. Drive device according to one of the preceding claims, wherein the drive device is separated from the adjusting device. (10) separate adjusting device (14) for adjusting a The distance (13) of the ejection device (7) from the stop (9) comprises the adjusting device (14) being arranged on the housing (6), preferably the stop (9), and / or the ejection device (7).

7. Drive device according to claim 6, wherein the adjusting device (14) is spatially spaced apart from the adjusting device (10) and / or comprises a worm gear (15), an adjusting wheel (16), a threaded pin or an eccentric (18).

8. Drive device according to one of the preceding claims, wherein the drive device comprises a locking device (19) with which a movement of the ejection device (7) in the opening direction can be inhibited, wherein the The locking device (19) can be unlocked by overpressure movement in the closing direction.

9. Drive device according to one of the preceding claims, wherein the adjusting device (10) comprises a further locking device (20), preferably a detent device or backstop, with which a distance (11) of the ejection device (7) relative to the adjusting device (10) can be secured in the closed position (4) by the displacement of the stop (9) or the housing (6) relative to the adjusting device (10).

10. Drive device according to one of the preceding claims, wherein the adjusting device (10) has a further housing (21) separate from the housing (6), which can be attached to the housing (6) as an add-on or is arranged on a carrier (22) together with the housing (6).

11. Drive device according to claim 9 or 10, wherein the adjusting device (10) comprises a resetting device (23) with which a spacing (11) of the ejection device (7) relative to the adjusting device (10) determined by the adjusting device (10) can be removed by releasing the further locking device (20), wherein it is preferably provided that the resetting device (23) comprises a leaf spring or a lever (25) or a slide (26) or a latch (27) or a wheel (28).

12. Drive device according to one of the preceding claims, wherein the adjusting device (10) comprises a return spring (29) operatively connected to the adjusting device (10) and the housing (6), with which the distance (11) of the ejection device (7) relative to the adjusting device (10) can be increased.

13. Drive device according to one of the preceding claims, wherein the spacing (11) is adjustable by means of the adjusting device (10) by means of a transmission device (34), an adjusting wheel (30), an inclined plane (31) or a worm gear (32).

14. Furniture comprising a furniture body (3), at least one furniture part (2) movable relative to the furniture body (3), preferably a drawer, and at least one drive device according to one of the preceding claims for applying force to the least one movable furniture part (2) from a closed position (4) or overpressure position (12) of the at least one movable furniture part (2) into an open position (5) of the at least one movable furniture part (2).

15. Method for adjusting the depth of a drive device according to one of claims 1 to 13, preferably one that interacts with the drive device movable furniture part (2) opposite a guide device (33) of a furniture carcass (3) , characterized by the following process steps: - the ejection device (7) is moved or shifted, preferably by the movable furniture part (2) or from the closed position (4), into an overpressure position (12), so that the ejection device (7) comes into contact with the stop (9) of the housing (6), preferably the movable furniture part (2) comes into contact with the furniture body (3), and - via a relative movement between the housing (6) or the stop (9) and the adjusting device (10) the distance (11) of the ejection device (7) relative to the adjusting device (10) in the closed position (4) is automatically adjusted by the adjusting device (10).

16. Method according to claim 15, wherein the adjustment of the spacing (11) of the ejection device (7) relative to the adjustment device (10) is made to a value predefined by the ejection device (1).

17. Method according to claim 15 or 16, wherein a The reset device (23) is actuated, whereby a return spring (29) cancels a defined distance (11) between the ejection device (7) and the adjustment device (10).

18. Method according to one of claims 15 to 17, wherein the adjustment of the spacing (11) of the ejection device (7) relative to the adjustment device (10) is carried out once for a plurality of movements of the ejection device (7) into the closed position (4).

19. Method according to one of claims 15 to 18, wherein in a preceding or subsequent method step, preferably in the closed position (4) , a distance (13) of the ejection device (7) relative to the stop (9) is adjusted by an adjusting device (14 .

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