EP3769645B1 - Device for moving a movable furniture part in an opening direction relative to the furniture body of a piece of furniture - Google Patents

Description

The invention relates to a device for moving a movable furniture part in an opening direction in relation to a furniture body of a piece of furniture and/or a device for moving a movable furniture part relative to a body of a household appliance, a guide system for a piece of furniture or for a household appliance with such a device and a piece of furniture or a household appliance with such a guide system and device.

State of the art

For furniture parts, such as drawers, furniture doors or furniture flaps, which are movably mounted on a furniture body, guide units, hinges and fittings are used to influence the movement of the respective furniture part.

In some embodiments of the respective device, an additional function for influencing the movement of the furniture part is provided. This applies, for example, to systems for providing an opening function for the force-assisted opening movement of the furniture part from a closed position of the furniture part relative to the furniture body. These systems can be designed in such a way that when the furniture part is closed, there is a front gap between a movable furniture part and a furniture body. This makes it possible for a user to trigger a so-called touch latch function of the system, which releases a charged energy store of the furniture, with the furniture part being movable in an opening direction using an ejector of the device.

Patent document DE 10 2017 121596 A1 discloses a known device with touch latch function.

Task and advantages of the invention

The object of the invention is to provide an improved device of the type mentioned in the introduction for moving a movable furniture part in order to facilitate and/or support an opening and/or closing process, and in particular to enable a more flexible use of the device.

The task is solved by the features of independent claim 1.

Advantageous and expedient developments and variants of the invention are specified in the dependent claims.

The invention is based on a device for moving a movable furniture part in an opening direction in relation to a furniture body of a piece of furniture, the movable furniture part being able to be brought into the opening direction and into a closing direction opposite to the opening direction via guide means. The device has an energy accumulator and an ejector, so that with the device mounted on the furniture, the movable furniture part can be brought into an opening position via the ejector during an opening process under the action of the energy accumulator. The ejector moves guided on a base plate of the device, a pawl component with a guide element being present on the ejector, and the guide element moving in a guide path of the base plate. The guideway is designed like a loop, with the pawl component assuming different positions in relation to the rest of the ejector depending on the position of the guide element in the guideway.

The movable furniture part is preferably designed as a drawer, door, flap, or the like. The drawer or flap is movably guided on the furniture body via guide means, for example pull-out rails such as partial or full extensions, and/or hinges and/or flap fittings on the furniture body.

The device is advantageously mounted on a body side wall of the furniture and/or the guide means. It is also conceivable to mount the device on a drawer, in particular on a drawer side wall or on the underside of a drawer. The preferred installation orientation of the device is vertical, based on a main plane spanned by the device, in particular almost or exactly parallel to a body side wall, but horizontal installation, for example on the underside of a drawer base, is also possible.

The ejector of the device cooperates, for example, with a driver of the furniture part and/or with a driver of the guide means of the furniture part and/or the furniture body during an opening process and/or closing process.

If the device is advantageously arranged in a fixed position relative to the furniture body on the guide means of the furniture and/or on the furniture body, the driver is formed on the movable furniture part or, for example, on the movement rail of the pull-out. If the device is arranged on the movable furniture part, the driver is preferably formed on the fixed-position parts of the guide means of the furniture and/or on the furniture body, advantageously fixed in position to the furniture body.

The ejector preferably comprises a pawl component with a guide element. The pawl component is preferably movable with the guide element, in particular pivotally attached to the ejector. The guide element preferably moves in a guided manner, in particular guided in a guide track of the base plate.

A guideway preferably comprises several guide surfaces. In a preferred variant there are 3 guide surfaces which are at an angle to one another. The arrangement of these three guide surfaces is preferably chosen so that they have a U-shaped cross section; in particular, the guide surfaces are each arranged at angles of approximately 90°. In a further possible embodiment, exactly two guide surfaces are present at an angle to one another.

The guide element preferably moves along the guide surfaces, in particular it slides along at least one of the existing guide surfaces. One of the guide surfaces preferably lies in the plane of the base plate, in which the base plate mainly extends. The guide surface in question is preferably formed by an area of the top of the base plate, while there are no guide tracks on the back of the base plate. The back is regularly in flat contact with a counter section of the furniture.

Preferably, two further guide surfaces protrude at an angle from the guide surface, which is formed in the plane of the base plate. These two guide surfaces form the border of the guide track, in particular the guide contour for the guide element on the pawl component.

In order to ensure the function of the device, the guide element must preferably be dimensioned such that it can be moved within the border and on the guide surface in the plane of the base plate. The guide element rests either on one guide surface, on two of the guide surfaces, or it rests on all three guide surfaces.

The border is preferably formed from protruding guide surfaces to the level of the top side of the base plate, shown raised from the level of the base plate, and connected in one piece or materially to the base plate.

In a preferred embodiment, the base plate is made of a plastic, preferably using an injection molding process. It is also possible to manufacture the base plate from another material, for example metal, rubber or a composite material.

Preferably, the guideway comprises different track sections. For example, the guideway includes the track sections of the ejection track, tension track and reversal track.

Preferably, a track section is connected at one point to an adjacent track section or a track section merges into an adjacent track section. Two railway sections are connected to each other at more than one point, in particular at exactly two points. The third track section is preferably connected with one of its ends to the other two track sections at one of these two points. In this preferred embodiment, the other end is not connected to any other track section.

In the preferred embodiment, the following sequence occurs during an opening process of the movable furniture part, the device being fixed in position on a side wall of the furniture body. If a force-assisted opening of the drawer is initiated by activating the touch latch function, the sequence of the guide element on the latch component is as follows: By pushing in the drawer front, the ejector is moved slightly in the closing direction and a force storage unit is unlocked, thereby moving the ejector with it the pawl component is moved in the opening direction by the energy stored in the energy storage. When the touch latch function is triggered, the guide element is on the reversing path. Once the energy storage is triggered, the guide element switches to the ejection path. Due to the guide contour, the pawl component is swung out and interacts with the driver. At the end of the ejection path, the pawl component pivots away from the driver so that it is free and the drawer can be opened further, in particular completely, without interaction with the device by kinetic energy or by a user. If the drawer is closed again by a user, this initially occurs without interaction with the device, only after a The driver interacts with the ejector at a certain distance, corresponding to the closing distance traveled by the furniture part compared to the fully opened position. During this process, the pawl component is pivoted away and the guide element is located on the tensioning track section. While the drawer is now closed by a user, the energy storage device is tensioned. At the end of the tensioning process, the guide element changes back to the reversal path in which it is located until the drawer is opened again. The device works independently of a possible arrangement for completely retracting the drawer or an automatic retraction system for the drawer.

If the device is used correctly and there is no malfunction, an opening process and a subsequent closing process of the furniture part, in conjunction with the device, can be repeated as often as desired.

The preferred process described above when opening and closing a movable furniture part simultaneously defines the intended direction in which the guide element moves in the guide track.

Preferably, during the opening process: reversing track and ejection track, during a closing process: tensioning track and reversing track, so that the following results for opening and closing: reversing track, ejection track, tensioning track and back to the reversing track.

The position of the pawl component on the ejector changes relative to the ejector in a preferred embodiment, depending on different positions that the ejector assumes relative to the base plate during an opening and / or closing process of the movable furniture part.

Preferably, the guide element of the pawl component runs on the ejection path during an opening movement of the furniture part, in particular the drawer, so is the pawl component in particular completely swung out and protrudes beyond the outer edge of the base plate so that it works together with the driver.

Preferably, most of the pawl component on the tensioning track is pivoted in and therefore almost does not protrude beyond the outer edge of the base plate. The movement of the pawl component and the ejector preferably takes place in one plane of movement. This plane of movement is preferably parallel to the plane of the base plate.

The essence of the invention can now be seen in the fact that in the guide track in which the guide element moves, there is a locking element which holds the guide element in the intended direction of movement in the guide track, the locking element and preferably the guide element being designed to be deflectable/ and the locking element can only be overcome by the guide element in the intended direction of movement, wherein in an opposite direction of movement the guide element cannot overcome the locking element but is blocked by the locking element. Preferably, the different path sections of the guideway should only be traversed by the guide element in one intended direction or in a single direction. During an opening process, the guide element moves, among other things, in the ejection path. During a subsequent closing process, the guide element changes to the tensioning track. The preferred, intended direction of movement of the guide element results from an opening process and a subsequent closing process of the movable furniture part, in particular a drawer. During the movement of the furniture part, the latch component is motion-coupled to the furniture part for certain periods of time.

This preferred spatial sequence in which the different path sections are traversed by the guide element is at the same time also a temporal sequence, caused by the opening and closing processes of the movable furniture part.

The locking element is preferably located at a transition between the two track sections, the ejection track and the tension track. The locking element prevents an undesirable change in the direction of rotation of the guide element from the ejection track track section to the tension track track section.

Preferably, part of the locking element or the entire locking element is part of the guideway. The locking element can, for example, cover part of the guideway or replace it.

Preferably, a further part of the blocking element or the entire blocking element comprises a section of the border of a guide track, in particular a section of a guide contour.

One possible design is a locking element which can be elastically deformed. The blocking element can be made entirely or partially, for example from a rubber material, a metal, or a plastic or from a combination of these materials or a composite material.

This is preferred so that the locking element remains permanently functional and can always spring back from a deflected position, which the locking element assumes at the moment the guide element passes over it, into its starting position in which it is not deflected. This preferably happens automatically due to the locking element's own elasticity. In the starting position, the guide element can only overcome it in the intended direction. When overcoming the locking element is preferably deflected against a spring effect.

The locking element includes, for example, a resilient tab, so that a force is necessary that the guide element must apply in order to overcome the locking element or to push the locking element away, transversely, in particular perpendicularly, to the plane of the base plate or to the plane of movement.

Preferably, the locking element and/or the guide element is mounted so that it can be deflected, so that the guide element can move over the locking element. In one variant, the locking element is mounted in a deflectable manner, in a further embodiment, only the guide element is mounted in a deflectable manner, or in a third embodiment, both the locking element and the guide element are mounted in a deflectable manner and thus both can be moved, in particular at the same time.

In a preferred embodiment, the locking element comprises a resilient section and a rigid section. It is also possible for the locking element itself to be designed to be resilient, preferably as a type of spring tab.

According to the invention it is provided that there are recesses around the locking element. The recesses enable the locking element to move relative to the remaining part of the base plate. According to the invention, these recesses are arranged in a slot-like manner around the locking element. There is preferably exactly one recess which surrounds a blocking element, for example a rectangular one, on three of four sides.

In one embodiment, adjacent recesses are separated from one another by material webs. These material webs preferably consist of the material of the base plate and, like the locking element, are connected in one piece to the base plate.

In a preferred variant, the recesses are made in an injection molding process during the manufacturing process of the base plate. It is also possible to subsequently produce the recesses, for example by removing material from the base plate.

The recesses are preferably dimensioned so that they do not impair the movements, in particular of the guide element.

In a further variant, the locking element is made of a different material than the base plate. Preferably, the locking element is connected in one piece to the base plate, or is made from the same material, or is attached to the base plate, and is made, for example, of metal, composite material, plastic, rubber. The connection is preferably positive.

It is further preferred that the blocking element comprises a ramp-like section, in particular, for example, a ramp element.

In a preferred embodiment of the locking element, it comprises a three-dimensional ramp, in particular with a resilient tab, at one end of which the ramp sits. For example, the resilient tab returns the locking element to the starting position; in this position, the locking element locks or blocks the undesirable change between the ejection track and clamping track sections.

A preferred embodiment of the ramp-like section on the locking element provides for an increase in height in relation to the surface of the base plate. This increase in height can go from the level of the base plate to the height of a border of a track, in particular a guide track, in particular the guide track of the guide element on the pawl component. Other variants also provide heights between these two values.

The locking element is preferably arranged and designed so that the ramp-like area is opposite a connection of the locking element to the base plate. As a result, the ramp-like area can cover the greatest possible distance and thus a suspension of the locking element is realized. The guide element is preferably designed as a protruding section of the pawl component, relative to a flat side of the pawl component on which the guide element is present, in particular it is a guide pin which, for example, comprises a cylindrical outer jacket and an axially flat end face.

In a further embodiment, a resiliently mounted guide pin is also conceivable, which is moved as a guide element on the pawl component in the guide track and is resiliently attached to the pawl component.

The device according to the invention with a locking element enables the device to be installed in different orientations. This can be vertical, i.e. parallel to the body side wall or a drawer side wall, or horizontal, i.e. parallel to a drawer bottom.

The invention also relates to a piece of furniture with a device for moving a movable furniture part, which is designed as described in the previous paragraphs.

The movable furniture part can in particular be a drawer, which is moved by guide rails and a device to support the opening and/or closing movement.

The device according to the invention is preferably attached to a body side wall. It is also possible to attach two devices to one, in particular to the same, body side wall. If two devices are present on the same body side wall, these two devices can be connected to one another by a synchronization element, in particular a synchronization rod. In a further embodiment, it is also possible to attach only one device to one body side wall.

The synchronization element serves to prevent malfunctions during operation of the touch latch function of the device be prevented. This makes it possible for two coupled devices to be triggered simultaneously.

Character description

Further features and advantages of the invention are explained in more detail using exemplary embodiments shown schematically in the figures.

• Figur 1 ein Möbel perspektivisch von schräg oben mit einer Schublade im vollständig geöffneten Zustand an einem Möbelkorpus,
• Figur 2 eine Vorrichtung ohne ein Abdeckbauteil in Explosionsdarstellung,
• Figur 3 bis 8 die Vorrichtung gemäß Figur 2 im zusammengesetzten Zustand in einer Aufsicht einer ersten Hauptseite in unterschiedlichen Betriebszuständen,
• Figur 9 die Vorrichtung gemäß Figur 5 mit dem Abdeckbauteil perspektivisch schräg von unten mit Blick auf eine zweite Hauptseite der Vorrichtung,
• Figur 10 ein erfindungsgemäßes Möbel mit einer erfindungsgemäßen Vorrichtung an einer Korpusseitenwand des Möbels in perspektivischer Ansicht von schräg oben in vollständig geöffnetem Zustand,
• Figur 11 eine Grundplatte der erfindungsgemäßen Vorrichtung gemäß Figur 10,
• Figur 12 einen vergrößert dargestellten Ausschnitt der Grundplatte mit einer Führungsbahn und einem Sperrelement, bezeichnet mit "A" in Figur 11,
• Figur 13 einen vergrößert dargestellten Ausschnitt der Grundplatte, in Figur 11 bezeichnet mit "B".

In detail shows:

• Figure 1 a piece of furniture in perspective from diagonally above with a drawer in the fully open state on a furniture body,
• Figure 2 a device without a cover component in an exploded view,
• Figures 3 to 8 the device according to Figure 2 in the assembled state in a top view of a first main page in different operating states,
• Figure 9 the device according to Figure 5 with the cover component in perspective obliquely from below with a view of a second main side of the device,
• Figure 10 a piece of furniture according to the invention with a device according to the invention on a body side wall of the furniture in a perspective view obliquely from above in a fully opened state,
• Figure 11 a base plate of the device according to the invention Figure 10 ,
• Figure 12 an enlarged section of the base plate with a guide track and a locking element, labeled "A" in Figure 11 ,
• Figure 13 an enlarged section of the base plate, in Figure 11 designated "B".

The Figures 1 to 9 show the starting point of the invention and serve to explain the functional principle of the device on which the invention is based.

The Figures 10 to 13 show the device according to the invention in the vertical installed state on a side wall of a piece of furniture according to the invention, a base plate of the device and two detailed views of the base plate.

A piece of furniture 50 with a box-shaped furniture body 51 and a drawer 53 which is movably guided via guide means 52 is in Figure 1 shown. The drawer 53 comprises a drawer bottom 54, a drawer front 55, side walls 56 and a drawer rear wall 57. To guide the drawer 53, two guide means 52 with the same effect are present between each side wall 56 of the drawer 53 and an associated body side wall 59. A device 58 according to the invention (shown in dashed lines) for moving or ejecting the furniture part designed as a drawer 53 in the opening direction M1 is arranged on an underside of the drawer bottom 54.

Figure 2 shows the exploded view of the device 58, which is designed as an ejector unit 1 for the drawer 53.

The ejector unit 1 is used to force-assisted ejection of the drawer 53 over a first section of the opening movement of the drawer 53 from a closed position relative to the furniture body 51 in the opening direction M1 of the drawer 53.

The drawer 53 is mounted on the furniture body 51 so that it can move in the direction M1 and M2 via the guide means 52, for example two similar partial or full extensions.

The ejector unit 1 can alternatively be arranged on the furniture body 51 or on the guide means 52 of the furniture 50.

The ejector unit 1 includes, among other things, a base plate 2, an energy storage device 3, a coupling device 4, an ejector 5, a trigger 6 and a locking element 7.

A housing of the ejector unit 1 includes the base plate 2 and a cover component 9, which consists of Figure 9 is visible. The ejector unit 1 can be arranged via the housing or via the cover component 9 and/or the base plate 2 on the underside of the drawer bottom 54 and/or on the guide means 52.

Holding sections, guide contours, stop elements and/or receiving sections for connecting the individual components of the ejector unit 1 are formed on the base plate 2. The base plate is essentially designed as a rectangular, elongated or strip-shaped component with a comparatively low height h of, for example, approximately 5 to 15 millimeters. The base plate 2 also has a width b of approximately 4 to 10 centimeters and a length g. The guide contours, in particular the borders of the guide track, can have heights h' with all values up to height h.

According to the exemplary embodiment shown, the energy storage 3 comprises two similar spiral springs 10, 11 arranged in parallel, which form a spring package. At a first end 12 of the energy accumulator 3, the spiral springs 10, 11 are arranged on an adjustable fixed bearing 13. The fixed bearing 13 comprises a movable bearing part 14, on which the spiral springs 10, 11 are detachably but firmly held, and an adjusting part 15 with an operating section 16, via which a user can adjust a position of the end 12 of the energy storage device 3 from the outside in a variable, fixed position. In this way, a force effect of the energy storage device 3 on the drawer 53 can advantageously be preset during the opening process of the drawer 53.

At a second end 17 of the energy accumulator 3, the associated ends of the spiral springs 10, 11 are attached to a carriage-like movement element 18. The carriage-like movement element 18 is guided linearly in a direction of movement P1 and an opposite direction of movement P2 via an associated guide contour 19 on the base plate 2.

The movement directions P1 and P2 of the movement element 18 (see. Figures 2 , 3 ) run parallel to the opening direction M1 of the drawer 53 and an opposite closing direction M2. The opening direction M1 corresponds to the direction P2 of the movement element 18 and the closing direction M2 corresponds to the movement direction P1 of the movement element 18.

If the ejector unit 1 is arranged in a fixed position on the furniture body 51 and/or on a stationary part of the guide means 52, the opening direction of the drawer 53 corresponds to the direction P2 on the device and the closing direction of the drawer 53 corresponds to the direction P1 on the device.

Furthermore, the assembly state of the ejector unit 1 on the drawer bottom 54 is assumed.

The Figures 3 , 7 , 8th show the ejector unit 1 in a clamping state of the energy accumulator 3, in which the spiral springs 10, 11 are elongated or tensioned, here the movement element 18 is offset in the direction P1 compared to a position retracted in the direction P2 on the base plate 2 and in a Clamping position held.

The Figures 5 , 6 show the ejector unit 1 in a discharged basic state of the energy accumulator 3, in which the spiral springs 10, 11 are still biased to tension, but with a smaller amount, and have a length L1. When the energy accumulator 3 is in the tensioned state, the spiral springs 10, 11 have a length L2 which is greater than L1.

A holding member 32 with a stop element 26 is present on the movement element 18. The stop element 26 is in contact with an ejector 5 during a power-assisted opening process.

Via the coupling device 4, the energy storage 3 or the movement element 18 is preferably in operative connection with the ejector 5 only during the closing process of the drawer 53. The ejector 5 is in particular only movable linearly or parallel to the direction of movement of the movement element 18 in the directions P1 and P2 - can be moved back and forth. For this purpose, a linear guide 20 is formed on the base plate 2, which has guide sections such. B. is coordinated on one side of the ejector 5.

An opening process of the drawer 53 caused by the ejector unit 1 takes place exclusively via a direct operative connection of the energy accumulator 3 to the ejector 5 via the movement element 18 moving in the direction P2. For this purpose, a stop element 26 is formed on the movement element 18, which is advantageously designed to be elastic and thus prevents or at least dampens a noise that is disturbing to a user when the movement element 18 hits the ejector 5 during the opening process of the drawer 53 ( Figure 3 , 4 , 5 ).

A front gap adjustment arrangement 8, which is formed on the ejector 5, comprises a housing 45 and an adjusting screw 22 with a contact section 21. The adjusting screw 22 has an external thread which cooperates with an internal thread on the housing 45 ( Figure 2 ). By manually turning an operating section 46 of the adjusting screw 22 by a user, a position of the contact section 21 of the adjusting screw 22 can be adjusted in the direction P1 or P2, depending on the direction of rotation. The adjusting screw 22 is particularly self-locking formed relative to the housing 45. By specifying the position of the adjusting screw 22, a dimension of a front gap between the drawer front 55 of the drawer 53 closed on the furniture body 51 and the end faces of the furniture body 51 can be specified.

The contact section 21 of the adjusting screw 22 rests against a driver 23 in the tensioned or loaded state of the energy accumulator 3, which forms a stop for the contact section 21 in corresponding operating states. The one in the Figures 3 to 8 Driver 23, which is only indicated by dashed lines, can be present, for example, on a fixed rail of the guide means 52 or attached to the furniture body 51 if the ejector unit 1 is arranged on the drawer 53.

If, on the other hand, the ejector unit 1 is arranged on the furniture body 51 or on a fixed position part of the guide means 52 of the furniture 50, the driver 23 can be present on the drawer 53 and thus movable to the furniture body 51.

Starting from the basic position of the ejector unit 1 according to Figure 3 a lock on the ejector unit 1 is released, which Figure 4 shows and is explained in more detail below, the tensioned or charged energy storage device 3 pulls the movement element 18 in the direction P2, which presses or pushes the ejector 5 in the direction P2 relative to the base plate 2 via the stop element 26.

As soon as the ejector 5 moves on the base plate 2 in the direction P2, a pawl component 24 of the ejector unit 1, which is pivotably mounted on the ejector 5, is pivoted out of a position that is completely recessed towards an outer edge of the base plate 2 Figure 4 brought into a swing-out position with a nose partially projecting over the outer edge of the base plate 2 ( Figure 5 ), which is realized via a loop-shaped closed guide track 25 in the base plate 2 and a guide pin 24a engaging therein on the pawl component 24.

To show the pawl component 24, its outline is hidden by other components, in particular by the ejector 5 Figures 3 to 8 indicated by dashed lines.

In the in Figure 5 In the basic state shown, the energy accumulator 3 is in an end position of the discharge state, whereby the energy accumulator 3 cannot move the ejector 5 any further in the direction P2.

The ejector 5 is then moved in the direction P2 relative to the base plate 2 due to the kinetic energy of the drawer 53, which is caused by the previous ejection movement, and/or by a user manually moving the drawer 53 further in the opening direction M1. This is possible because the pawl component 24, which is pivoted out on the ejector 5, abuts on the driver 23, so that in the further course of the drawer movement the ejector 5 reaches its end position, which is shifted to the maximum extent in the direction P2 on the base plate 2. The pawl component 24 is completely swiveled in again when the end position on the ejector 5 is reached, which is determined by the interaction of the guide track 25 with the guide pin 24a engaging therein on the pawl component 24.

If the drawer 53 is moved further in the opening direction M1 after an unloading process of the energy accumulator 3, the ejector unit 1 separates from the driver 23 and the contact between the driver 23 and the contact section 21 of the adjusting screw 22 is canceled ( Figure 6 ).

From the end position described above, which the ejector only assumes for a short time, the ejector 5 is pushed by spring elements 33 on the base plate 2, for example by a few millimeters in the direction P1. The spring elements 33 have a comparatively low force compared to the spiral springs 10, 11 of the energy accumulator 3. With the movement of the ejector 5 In the direction P1, due to the force of the spring elements 33, a contact section 29 of the pawl component 24 is brought into direct, play-free contact with a bearing pin 31 of a clamping lever 30 of the coupling device 4 in a waiting position of the ejector 5 ( Figure 6 ). The bearing pin 31 is arranged at a first end of the clamping lever 30 and can move freely along, for example, a linear guide track 27 and / or a linear guide 63, which is formed on the ejector 5, in particular within an opening process of the drawer 53, until the pawl component 24 holds the bearing pin 31 and/or the clamping lever 30 in direct, play-free contact with the ejector 5.

The waiting position of the ejector 5, which is in Figure 6 is shown, is also at the same time a starting position of the ejector 5 for a tensioning process of the energy accumulator 3 via the coupling device 4.

By arranging the bearing pin 31 at the first end of the clamping lever 30 at a point S2 instead of at a point S1, the starting position of the clamping movement of the ejector can be changed. If the bearing pin 31 is arranged at the point S2, the starting position of the ejector is offset in the direction P1 compared to an arrangement at the point S1. It would also be conceivable to change the length of the clamping lever 30, for example to shorten it. It would also be conceivable to change the mounting of the pawl component 24 on the ejector 5, for example in the direction P2 on the ejector 5, and thus to change the position of the play-free contact in the clamping process between the ejector 5 and the clamping lever 30 relative to the ejector 5.

In addition to the tensioning lever 30, the coupling device 4 includes a guide lever 34 and a connecting element 35. The tensioning lever 30 is articulated at a second end via a bearing pin 36 on the guide lever 34. The connecting element 35 is also on the guide lever 34 and at a second end via a bearing pin 37 spaced apart from the bearing pin 36 articulated at its first end via a further bearing pin 38 on the movement element 18. The guide lever 34 is movable at a first end via a bearing pin 39, in particular pivotably arranged on the base plate 2. The bearing pin 39 is preferably accommodated both on the base plate 2 and on the cover component 9.

A longitudinal axis A1 of the clamping lever 30, which runs through the bearing pins 31, 36 of the clamping lever 30, has an angle α to a first longitudinal axis A2 of the guide lever 34, which runs through the bearing pins 36, 39.

A longitudinal axis A3 of the connecting element 35, which runs through the bearing pins 37, 38 of the connecting element 35, has an angle β to a second longitudinal axis A4 of the guide lever 34, which runs through the bearing pins 37, 39.

The guide lever 34 of the coupling device 4 comprises a lever attachment 40 at a second end. A locking element 41 and a stop element 42 are formed on the lever attachment 40.

The end position of the discharge state of the energy storage 3 ( Figure 5 ) is specified by a stop of the stop element 42 of the guide lever 34 on a wall section 47 on a web-like wall 48 of the base plate 2. The wall section 47 is formed, for example, from an annular section of a damping element. If the stop element 42 of the guide lever 34 rests against the wall section 47 after an unloading process of the energy accumulator 3, a tensile force in the direction P2 is transmitted from the movement element 18 via the connecting element 35 to the guide lever 34 due to a remaining pretension of the spiral springs 10, 11. Due to the rigid design of the coupling device 4 or the abutment of the stop element 42 on the wall section 47, the movement element 18 is prevented from further movement in the direction P2, with the energy accumulator 3 being held with the movement element 18 without play in the end position of the unloading state.

In particular, the stop element 42 and/or the wall section 47 can be designed to be elastic or dampening, which reduces or prevents stop noises.

Due to its design, the guide lever 34 can transmit a force with a translation from the tensioning lever 30 to the connecting element 35 when tensioning the energy accumulator 3.

The transmission ratio is formed on the one hand by the ratio of the distance between the bearing pins 39 and 36 to the distance between the bearing pins 39 and 37 on the guide lever 34, and on the other hand by the combined circular and linear movement of the clamping lever 30 and / or the connecting element 35 to one another during the loading process of the Energy storage 3.

The elements of the coupling device 4 can move as follows due to their arrangement on the ejector unit 1:
Due to its storage in the guide track 27, the bearing pin 31 and thus the first end of the clamping lever 30 can only move parallel to a direction of movement of the ejector 5, in particular parallel to a direction of movement of the movable furniture part 53.

The bearing pin 38 and thus the first end of the
Due to its mounting on the carriage-like movement element 18 and therefore advantageously in the guide contour 19, the connecting element 35 can move exclusively parallel to a direction of movement of the movement element 18 or the ejector 5, in particular parallel to the direction of movement of the movable furniture part 53.

The bearing pin 36, thus the second end of the clamping lever 30, can move exclusively in a circular path around a center of rotation of the bearing pin 39 of the guide lever 34 due to its mounting on the second end of the guide lever 34.

Due to its storage in a central region of the guide lever 34, the bearing pin 37 of the connecting element 35 and thus the second end of the connecting element 35 can move exclusively in a circular path around a center of rotation of the bearing pin 39 of the guide lever 34.

Due to the above-mentioned configuration, the coupling device 4 can transmit a force for tensioning the energy accumulator 3 from the ejector 5 via the tensioning lever 30 and the guide lever 34 to the connecting element 35 and thus the energy accumulator 3, in particular the coupling device 4 reduces the force exerted by the ejector 5 on the energy accumulator 3. This means that when loading the energy accumulator 3, a user has to apply a lower force to the ejector 5 than he would have to apply if he wanted to load the energy accumulator 3 without a reduction or directly the end 17 of the energy accumulator 3 in would pull towards P1.

The beginning and end of the charging process of the energy accumulator 3 or the spiral springs 10 and 11 are in the Figures 6 and 7 illustrated.

The tensioning of the energy accumulator 3 takes place with a movement of the drawer 53 when closing or on a part of the closing movement of the drawer 53. The starting position of the ejector unit 1, in which it is prepared for tensioning the energy accumulator 3 and waits for the drawer to close, shows Figure 6 .

If the drawer 53 is closed from the outside, for example by a user, the ejector unit 1 moves in the direction M2 towards the driver 23. When the contact section 21 of the adjusting screw 22 of the ejector 5 hits the driver 23, the charging process of the energy storage device 3 begins. For example, due to the inertia of the drawer 53 Relative to the base plate 2, the ejector 5 is moved in the direction P1 by striking the driver 23.

By coupling the ejector 5 via the coupling device 4 with the energy accumulator 3, the movement element 18 of the energy accumulator 3 is also displaced in the direction P1 relative to the base plate 2 and the second end 17 of the spiral springs 10, 11 is displaced in the direction P1 and thus the spiral springs 10 , 11 elongated.

At the end of the tensioning process of the energy accumulator 3, the ejector 5 is in a loading end position, this is in Figure 7 shown. When the energy accumulator 3 is clamped, the ejector unit 1 is in a locked state.

In the locked state, the locking element 41 of the coupling device 4 and the locking member 7, which is designed as a flap, determine a locking state, with an unloading movement of the coupling device 4 being blocked by the locking member 7.

The tensioning of the energy accumulator 3 is completely completed before, for example, an automatic retraction system for power-assisted retraction of the drawer 53 into the completely closed position on the furniture body 51 becomes effective. The automatic retraction system is not part of the ejector unit 1 and is integrated, for example, in the guide means 52 or the partial or full extensions.

After the energy accumulator 3 has been tensioned, the ejector 5 is moved in the direction P1 relative to the base plate 2 due to the further closing movement of the drawer 53 due to the contact with the driver 23. Here, the operative connection between the pawl component 24 of the ejector 5 and the bearing pin 31 of the clamping lever 30 is canceled. This is done by interaction of the guide track 25 with the guide pin 24a on the pawl component 24, the pawl component 24 being guided by the Guide pin 24a in the guide track 25 is pivoted away from the bearing pin 31 ( Figure 8 ). In this state, the ejector 5 is decoupled from the coupling device 4 and can be moved by the driver 23 in the direction P1, in particular by an automatic retraction mechanism, until the drawer 53 is completely closed on the furniture body 51 and the ejector 5 on the trigger 6 is in the basic position Figure 3 pending.

In the basic position of the ejector unit 1 according to Figure 3 It is possible for a user to manually pull the drawer 53 in the opening direction M1 without an ejector function or without first removing the locking state. The energy accumulator 3 of the ejector unit 1 remains unactuated or charged.

In order to eject the drawer 53 with the ejector unit 1 from the fully inserted or closed position on the furniture body 51, a user must press the drawer from the outside in the direction M2. For this purpose, the ejector unit 1 has a so-called touch latch functionality, which has a locked state that can be unlocked by moving the inserted drawer 53 closed on the furniture body 51 in the closing direction M2. This closing movement or the inward pushing of the drawer 53 in the direction of M2 takes place until it reaches a stop position corresponding to a front gap, which in the closed state of the drawer 53 is in particular caused by a distance between an inside of the drawer front 55 and a front end face or the side walls 56 of the furniture body 51 is specified. The front gap is usually a few millimeters, for example approx. 1 to 10 millimeters.

Accordingly, the unlocking of the ejector unit 1 is coordinated in such a way that a closing movement of the drawer 53 in the direction of M2 of a few millimeters or a maximum of the amount of the front gap is sufficient to reliably predetermine the unlocking and thus the force-assisted ejection of the drawer 53. Starting from the basic position according to Figure 3 the ejector unit 1 with the drawer 53 is moved in the direction M2. Since the adjusting screw 22 rests on the driver 23, the ejector 5 is moved relative to the base plate 2 in the direction P1, whereby a contact section 44 on the ejector 5 presses against the trigger 6 and accordingly pushes it in the direction P1. The trigger 6 has a limited linear displacement in the direction P1 and P2 on the base plate 2, usually by a few millimeters or less than the dimension of the front gap.

The trigger 6 is preferably directly coupled to the locking element 7, which is designed as a flap 43, such that the linear triggering movement of the trigger 6 in the direction P1 sets the flap 43 in a rotational movement about a pivot axis D. The rotary movement causes the flap 43 to be released from a locking position, into which the flap 43 is urged by a spring element designed as a leaf spring 49. When the ejector unit 1 is locked, the flap 43, which is in the locking position, blocks the guide lever 34 or the lever attachment 40 in such a way that the energy accumulator 3 remains in its loaded state.

With the rotation of the flap 43, the blockage of the guide lever 34 is removed. The locking element 41, which is preloaded with a leg spring 60, preferably swings out on the lever attachment 40.

The locking element 41 protruding from the lever attachment 40 moves past the flap 43 under the pivoting process of the guide lever 34 and continues the rotational movement of the flap 43 about the pivot axis D initiated by the trigger 6 without interruption. This advantageously increases the angle of rotation of the flap 43 from the locking position. By moving the lever attachment 40 past the flap 43 and continuing through the swinging out locking element 41, the ejector unit is 1 safely unlocked. For this purpose, a comparatively very small linear triggering movement of the trigger 6 in the direction of P1 is advantageously necessary. The cap 43 is then pushed back into its locking position by the leaf spring 49.

When the energy accumulator 3 is tensioned, the locking element 41, which is swung out on the lever attachment 40, again comes into contact with a front edge of the flap 43. The locking element 41 then retreats against the spring force of the leg spring 60, so that it rests so far on an edge of the lever attachment 40 is sunk so that the guide lever 34 with the lever attachment 40 can swing past the flap 43.

Behind the flap 43, the locking element 41 is pivoted out again by the spring force of the leg spring 60. After the tensioning process, the guide lever 34 with the protruding locking element 41 is pressed against the flap 43 held in a locking manner by the leaf spring 49, so that the energy accumulator 3 is in the locked state.

The rotational movement of the flap 43 of the ejector unit 1 or the device 58 is transmitted via a synchronizing rod 61, which is arranged in a rotationally fixed manner on the flap 43, to a second advantageously equivalent device 62, which is arranged on the drawer 53.

The synchronizing rod 61 advantageously connects the locking element 7 with a second locking element present on the second device 62. The two locking elements are therefore directly and/or synchronously coupled in terms of movement. This represents a synchronization principle that is contrary to a connection between trigger elements of two ejector devices on a piece of furniture.

In the Figures 10 to 13 a piece of furniture 50a according to the invention or a device 58a according to the invention is shown.

The device 58a according to the invention differs from the device 58 from the Figures 1 to 9 at least through a modified guide track 100, which includes, among other things, a locking element 101.

The reference numbers for corresponding components of the device 58a are partly used corresponding to the device 58. Components that differ from the corresponding components according to Figures 1 to 9 differ, are named with their own reference numbers.

In Figure 10 The furniture 50a according to the invention is shown, it comprises two body side walls 59 and 59a, a body rear wall 59b and a body lid, not shown. The furniture 50a further comprises a movable furniture part designed as a drawer 53, which can be moved relative to the remaining furniture via guide means 52 in the opening direction M1 and in the closing direction M2.

In the case of the furniture 50a, the device 58a according to the invention is mounted on the body side wall 59a. There is no device according to the invention on the body side wall 59.

The drawer 53 includes a drawer base 54, a drawer front 55, two side walls 56, each with a rail 56a and a drawer rear wall 57. The drawer front 55 and the drawer rear wall 57 are connected by the two drawer side walls 56. A railing 56a runs parallel to the upper end of the drawer side walls 56 and is connected in a stabilizing manner approximately halfway along the length of the drawer 53 by a web 56b.

To guide the drawer 53, two guide means 52 with the same effect, for example full extensions, are present between each side wall 56 of the drawer 53 and the associated body side wall 59 or 59a. The means of leadership 52 on the body side wall 59 are covered by this body side wall 59 and are therefore not included Figure 10 to see. The device 58a according to the invention is intended to move or support ejection of the drawer 53 in the opening direction M1.

In the in Figure 10 In the exemplary embodiment of the furniture 50a according to the invention shown, there are two devices 58a according to the invention which have the same effect and act simultaneously. These two devices 58a are mounted on the body side wall 59a and connected to one another via a synchronizing rod 61. Due to the perspective view with the side wall 59, only the upper device 58a and part of the synchronizing rod 61 are shown.

A driver 109 is attached to one side of the drawer 53, coordinated with the upper of the two devices 58a. Here, for example, this is attached to the drawer rear wall 57 with a flange 110. The flange 110 is arranged vertically above the drawer side wall 56 between the railing 56a and the drawer side 56 facing the body side wall 59a. The driver 109 projects from the flange 110 at an angle outwards in the direction of the body side wall 59a. The driver has the same function as the one in which Figures 1 to 9 driver 23 described. The driver 109 differs from the driver 23 only in the way it is attached. According to the Figures 1 to 9 the driver 23 is attached to the body 51 or to a body rail of the guide means 52, whereas the driver 109 is in Figure 10 is attached to the drawer 53. The device 58a is in Figure 10 attached to the body side wall 59a in a fixed position.

In Figure 11 Only a base plate 2a of the device 58a according to the invention is shown.

One in Figure 11 The visible guideway 100 includes a locking element 101, a reversal path 102, an ejection path 103 and a tensioning path 104, shown in Figure 12 . This guide surface is surrounded by the further guide surfaces 107, which have a guide surface section 107a in the area of the locking element 101.

Figure 12 shows a section Figure 11 , marked with A. In the detailed view according to Figure 12 the locking element 101 is designed with a ramp-like section 105. The ramp-like section 105 can only be overcome in one direction by a guide pin 24a. The direction in which the guide pin 24a runs in the guide track 100 is indicated by arrows in Figure 12 indicated. When the drawer is opened in the direction M1, the guide pin 24a first moves on the reversing path 102. The energy of the charged and released energy storage 3 causes the ejector 5 to move with the guide pin 24a (all not in Figure 12 shown) brought to the ejection path 103. As the drawer 53 continues to open, the guide pin 24a reaches the end of the ejection track 103 and then switches to the clamping track 104. The guide pin 24a remains there until the drawer 53 is closed again by a user and the driver 109 onto the ejector 5 meets. Here, energy is supplied by the user and the energy storage 3 (not in Figure 12 shown) tensioned again when the ejector 5 moves in the direction P1.

In order to avoid an unwanted or functionally incorrect change of the guide pin 24a from the reversing track 102 to the tensioning track 104 in the process described above when opening the drawer 53, the locking element 101 is provided according to the invention. The locking element 101 includes a connection 106 to the base plate 2a, the ramp-like section or ramp 105, and the guide surface section 107a. The ramp 105 includes an incline 105a and a blocking side 105b.

By designing the ramp 105 with the slope 105a and the locking side 105b, the locking element blocks the change of the guide pin 24a at this point. This is one Error-free function of the device is guaranteed, because the guide pin 24a cannot slip into the tensioning track 104 at the end of the reversing track 102, but is directed onto the ejection track 103 through the locking side 105b.

The slope 105a of the ramp 105 rises to a maximum height, which corresponds to the height of the base plate 2a, based on the base area of the base plate 2a. An increase to approximately half the height of the base plate 2a at the highest point of the ramp 105 is preferred. The highest point of the ramp 105a is also the height of the locking side 105b perpendicular to the base plate 2a.

The locking element 101 is spaced from the remaining base plate 2a, at least over the substantial length of the outer edge of the locking element 101, by a narrow slot-shaped recess 108, which, for example, has a width of approximately one millimeter or a fraction of a millimeter. The recess 108 surrounds the locking element 101 on three of four narrow outer sides of the locking element 101, such as in Figure 13 shown. On the fourth side, which is opposite the side of the locking element with the components 105a, 105b and 107, the locking element 101 is connected to the base plate 2a via the connection 106.

Reference symbol list

1

Ejector unit

2

base plate

2a

base plate

3

Energy storage

4

Coupling device

5

Ejector

6

trigger

7

Locking device

8th

Front gap adjustment arrangement

9

Cover component

10

coil spring

11

coil spring

12

End

13

fixed camp

14

Bearing part

15

Control part

16

Operating section

17

End

18

Movement element

19

Guide contour

20

Linear guide

21

Contact section

22

adjusting screw

23

taker

24

Pawl component

24a

Guide pin

25

guideway

26

stop element

27

guideway

28

-

29

Investment section

30

Clamping lever

31

bearing journal

32

holding organ

33

Spring element

34

Guide lever

35

connecting element

36

bearing journal

37

bearing journal

38

bearing journal

39

bearing journal

40

Lever attachment

41

Locking element

42

stop element

43

flap

44

Contact section

45

Housing

46

Operating section

47

Wall section

48

Wall

49

leaf spring

50

Furniture

50a

Furniture

51

Furniture body

52

Leadership tools

53

Drawer

54

Drawer bottom

55

Drawer front

56

Side wall

56a

Railing

56b

web

57

Drawer back panel

58

contraption

58a

contraption

59

Body side wall

59a

Body side wall

59b

Body rear wall

60

Leg spring

61

Synchronous rod

62

contraption

63

Linear guide

64 to 99

Not shown

100

guideway

101

Locking element

102

Reversal trajectory

103

ejection path

104

Tension track

105

Ramp / ramp-like section

105a

Oblique

105b

Lock page

106

Connection

107

Guide surface

107a

Guide surface section

108

recess

109

taker

110

flange

Claims (9)

1. Device (58a) for moving a movable furniture part (53) in an opening direction in relation to a furniture carcass of an item of furniture (50a), wherein the movable furniture part (53) by way of guide means (52) is able to be moved in the opening direction and in a closing direction opposing the opening direction, wherein the device has a force accumulator (3) and an ejector (5) so that the movable furniture part (53) in an opening procedure, by way of the device (58a) assembled on the item of furniture (50a), under the effect of the force accumulator (3) is able to be moved to an opening position by way of the ejector (5), and the ejector (5) moves so as to be guided on a base plate (2a) of the device (58a); wherein present on the ejector (5) is a latch component (24) having a guide element which moves in a guide track (100) of the base plate (2a), wherein this guide track (100) is designed in the manner of a loop; wherein the latch component (24) as a function of the position of the guide element in the guide track (100) assumes different positions in relation to the remaining ejector (5); wherein present in the guide track (100) in which the guide element moves is a blocking element (101) which keeps the guide element in a designated direction of movement in the guide track (100); wherein the blocking element (101), and preferably the guide element, is/are designed to be movable and the blocking element (101) can be overcome by the guide element only in the designated direction of movement; wherein the guide element cannot overcome the blocking element (101) in the opposing direction of movement but is blocked by the blocking element (101), characterized in that there are clearances about the blocking element (101); wherein a mobility of the blocking element (101) relative to the remaining part of the base plate (2a) is enabled by the clearances; wherein the clearances (108) are disposed in the manner of slots about the blocking element (101).
2. Device according to Claim 1, characterized in that the guide track (100) in which the guide element moves is composed of a plurality of track portions.
3. Device according to one of the preceding claims, characterized in that the blocking element (101) is disposed in a region of the guide track (100) in which two track portions of the guide track meet so as to form a closed loop.
4. Device according to one of the preceding claims, characterized in that the changeover between the different track portions of the guide track is only possible in a specific spatial sequence.
5. Device according to one of the preceding claims, characterized in that the guide element comprises a projecting portion, in particular a guide pin.
6. Device according to one of the preceding claims, characterized in that the blocking element comprises a resilient portion.
7. Device according to one of the preceding claims, characterized in that the blocking element comprises a ramp-type portion (105).
8. Device according to one of the preceding claims, characterized in that the blocking element is elastically deformable.
9. Item of furniture having a device according to one of the preceding claims.

Images