EP3132715B1 - Device for moving a movable furniture part in an opening direction with respect to a 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 a piece of furniture with such a device.

State of the art

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

In some embodiments, the respective device provides an additional function for influencing the furniture part movement. This applies, for example, to systems with an opening function for the furniture part via an energy accumulator that is discharged when it is opened. A generic device is, for example, from WO 2014/165873 A1 famous.

Object and advantages of the invention

The invention is based on the object of a device provide the type mentioned at the outset, which has an improved charging function.

This object is solved by the features of claim 1.

Advantageous and expedient embodiments 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, wherein the movable furniture part can be brought into the opening direction and in a closing direction opposite to the opening direction via guide means. The device has an energy accumulator, so that with the device mounted on the piece of furniture, the movable furniture part can be brought into an open position during an opening process under the action of the energy accumulator via an ejector.

The movable furniture part is preferably designed as a drawer or flap and the drawer or flap on the furniture body is movably guided on the furniture body via guide means, e.g. pull-out rails or hinges.

The device is advantageously arranged on the movable furniture part, in particular on the underside of a drawer bottom. However, the device can also be embodied on guide means of the movable furniture part, in particular in a fixed position relative to the furniture body and/or on the furniture body.

The ejector of the device advantageously interacts with a driver of the piece of furniture and/or the guide means of the piece of furniture and/or the body of the piece of furniture during an opening or closing process.

If the device is arranged on the movable furniture part, the driver is advantageously formed on the guide means of the furniture and/or on the furniture body, advantageously in a fixed position to the furniture body. If the device is arranged on the guide means of the movable furniture part and/or on the furniture body in a fixed position relative to the furniture body, the driver is preferably formed on the movable furniture part.

The essential aspect of the invention can now be seen in the fact that a coupling device is provided which is effective between the ejector and the energy store during a loading process of the energy storage device, the ejector being designed in such a way that it is in the area of the end of its path during the opening process of the movable furniture part is coupled to the coupling device, and that for a subsequent closing process of the movable furniture part and an associated loading process of the energy storage device, the coupling between the ejector and energy storage device via the coupling device is effective without play.

As a result, a noise that is annoying to the user, for example a clicking sound, is completely avoided or greatly reduced when the driver hits the ejector.

In a preferred variant of the invention, the coupling device is not in an operative connection with the ejector during an opening movement of the movable furniture part, in particular during the discharge process of the energy store.

Advantageously, the coupling device, e.g. a coupling element of the coupling device, is movably arranged on the housing of the device, for example on a base plate of the housing and/or a cover component of the housing. In particular, a coupling element of the coupling device is pivotably and/or rotatably arranged on the housing of the device.

The cover member may be intended to cover the base of the housing of the device over a substantial area, ie more than 50% of the area of the base of the housing.

For example, a coupling element is designed as a lever, in particular as a rigid lever.

The coupling device can be made of metal, for example steel and/or sheet metal, plastic, wood or a combination of the materials.

According to the invention, a movable control element is provided on the energy store or on the coupling device or on the ejector in such a way that the ejector can be brought into operative connection with the coupling device for a loading process of the energy store when the movable furniture part assumes a predetermined position in relation to the ejector.

For example, the ejector can be brought into an operative connection with the coupling device when the movable furniture part leaves the ejector during the opening process.

The movable control member can be designed as a pawl element with a hook portion.

The movable control element is advantageously arranged on the ejector in such a way that it interacts with a driver, e.g. of the movable furniture part or the guide means of the furniture part and/or the furniture body, in such a way that when the movable furniture part moves in the opening direction, the ejector is moved into an end position .

For example, the movable control element is designed on the ejector in such a way that the movable control element can only be coupled to the driver of the movable furniture part and/or the guide means of the furniture part and/or the furniture body in an opening movement of the movable furniture part.

During a movement of the movable furniture part, in particular an opening movement, a coupling member of the coupling device is coupled to the ejector instead, advantageously at the end of a discharging process of the force accumulator, for example after the end of the discharging process. The coupling can take place in such a way that the movable control element of the ejector is pivoted in the direction of the coupling element into play-free contact with the coupling element during the opening movement of the movable furniture part.

It also proves advantageous that the ejector assumes a play-free coupling with the coupling device when the ejector returns from its end position to a waiting position, in particular during the opening process of the movable furniture part. Advantageously, the waiting position forms a starting position of the movement of the ejector during the closing process of the movable furniture part for loading the energy store via the coupling device.

For example, in the reverse movement of the ejector relative to the remaining device from the end position to the waiting position of the ejector, the ejector couples without play to the coupling device via the movable control element, for example to a coupling element of the coupling device.

Moreover, it is advantageous that the ejector is under prestress in the waiting position.

The ejector is advantageously pressure-loaded in the waiting position.

If necessary, the coupling device is in the waiting position under a prestress, in particular a coupling element is under a pressure-loaded prestress.

For example, the ejector is coupled to the coupling device in such a way that a compressive force is transmitted from the ejector to the coupling device.

It is also advantageous that the device comprises an elastic member, the elastic member urging the ejector into its waiting position. In particular, the elastic member urges the ejector from its end position to its waiting position.

Advantageously, the ejector undergoes a reversal of movement at its end position by a force of the elastic member.

The elastic element can act on the ejector in such a way that the ejector can be brought into a waiting position by the elastic element from the end position of the ejector in and/or during a movement of the movable furniture part in the opening direction, for example during the opening process.

The elastic member can be designed as a spring element, e.g. a spiral spring, a leaf spring, a torsion spring, an elastic rubber element or an elastic plastic element. It is also conceivable that the elastic organ is composed of a combination of the elements mentioned.

The elastic member advantageously has a damping and/or resilient effect.

Advantageously, the elastic member presses on the ejector in the waiting position, in particular the elastic member is under pretension when the ejector is in the waiting position.

In addition, it is favorable if the movable control element is arranged on the ejector in such a way that, during the opening process of the movable furniture part, it moves away from a driver of the movable furniture part and/or the guide means of the Furniture part and / or the furniture body separates so that it is no longer in contact with this, for example when the elastic member has reached a maximum force load, for example a spring tension, especially when the ejector has reached its end position. As a result, a coupling of the ejector with the driver of the movable furniture part and/or the guide means of the furniture part and/or the furniture body is released.

Advantageously, the elastic member is arranged on the housing of the device, for example the base plate of the housing and/or a covering component of the housing, in particular a side wall of the housing.

The elastic member can also be formed on the ejector.

Due to the opening movement of the movable furniture part, the elastic member can be loaded onto the elastic member, e.g. by a compressive force of the ejector, advantageously via a movement of the ejector in the direction of the end position.

It is also conceivable for the elastic member to be separate from the device and the ejector. For example, the device with the ejector can be arranged on the movable furniture part and the elastic member on the furniture body or the guide means of the furniture part.

The elastic member preferably has a comparatively very low spring force. Advantageously, the elastic element absorbs a comparatively low kinetic energy of the ejector and/or the movable furniture part and/or the driver of the guide means of the furniture part or the furniture body.

As a result, an opening and/or closing movement of the movable furniture part can be made pleasant for a user. Advantageously, the movement of the movable furniture part takes place without an abrupt change in speed, in particular the opening movement of the movable furniture part is not noticeably changed by an effect of the elastic member for a user.

It is also conceivable that the elastic organ is formed on the force accumulator.

Preferably, the elastic member, which is formed on the force accumulator, acts on the ejector via the coupling device, which is in play-free operative connection with the ejector.

The elastic member can act between the housing of the device and the ejector of the device and/or between the ejector and the coupling device and/or between the coupling device and the energy accumulator.

In an advantageous embodiment of the invention, the movable control element is pivotable, in particular rotatable, on the ejector of the device.

It is also advantageous that when a maximum force loading of the elastic element is reached, the movable control element pivots, advantageously rotates, away from the driver of the movable furniture part and/or the guide means of the furniture part and/or the furniture body. In particular, at the end position of the ejector, the elastic member is loaded with a maximum force.

For example, a coupling of the ejector to the driver of the movable furniture part and/or the guide means of the furniture part and/or the furniture body is released at the latest when the end position of the ejector and/or the maximum force loading of the elastic element is reached.

In an advantageous embodiment of the invention, the pivoting and / or rotary movement of the movable control member is designed such that the coupling of the ejector with the driver of the movable furniture part and / or Guide means of the furniture part and / or the furniture body is released.

It is also advantageous that the movable control member is pivotably guided in such a way that the ejector of the device can be brought into play-free operative contact with the coupling device when the movable furniture part moves in the opening direction.

For example, the pivoting and/or rotary movement of the movable control element acts in such a way that the ejector and/or the movable control element of the ejector can be brought into contact with the coupling device by the pivoting and/or rotary movement in such a way that movement is transmitted during the closing process of the movable furniture part from the ejector via the coupling device to the force accumulator is possible without play.

In an advantageous embodiment of the device, a guide link is formed on the housing of the device, in particular on the base plate of the housing and/or on the ejector.

The movable control element and/or the ejector can be guided by the guide link in such a way that the ejector can be brought into play-free contact with a coupling element of the coupling device.

Advantageously, the movable control member and/or the ejector are guided by means of the guide link in such a way that the coupling of the ejector to the driver is released after the ejector has reached its end position in the opening process of the movable furniture part.

In a further variant, during a movement of the movable furniture part in the closing direction after completion of the loading process of the energy accumulator of the device, a particularly play-free coupling of the ejector to a coupling element of the coupling device is released.

Advantageously, the movable control element is designed in such a way that after the energy storage device has been loaded, the movable control element is moved and/or pivoted and/or rotated so that the coupling of the ejector to the coupling element of the coupling device is released.

In addition, it is favorable if the guide link of the housing and/or the ejector is designed in such a way that, after the force accumulator has been loaded, the movable control element is guided in such a way that the coupling of the ejector to the coupling element of the coupling device is released.

It is also advantageous that a first end of a coupling member of the coupling device is movably guided on a guide link.

It is also conceivable that the guide link is designed in such a way that the coupling element is guided with its first end on the guide link parallel to a closing and/or opening direction of the movable furniture part.

Advantageously, a coupling element of the coupling device can be coupled to the ejector with a first end.

It is also preferred that the coupling device is connected to the force accumulator in a non-detachable and play-free manner.

Description of the embodiment

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

Figur 1

ein erfindungsgemäßes Möbel perspektivisch von schräg oben mit einer Schublade im vollständig geöffneten Zustand an einem Möbelkorpus,

Figur 2

eine erfindungsgemäße 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.

In detail shows:

figure 1

a piece of furniture according to the invention in perspective from diagonally above with a drawer in the fully open state on a piece of furniture,

figure 2

a device according to the invention without a cover component in an exploded view,

Figure 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 perspectively obliquely from below with a view of a second main side of the device.

A piece of furniture 50 according to the invention with a box-shaped furniture body 51 and a drawer 53 that is movably guided via guide means 52 is 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, there are two guide means 52 that act in the same way, each 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 phantom) for moving or ejecting the furniture part designed as a drawer 53 in the opening direction M1 is arranged on the 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 for power-assisted ejection of the drawer 53 over a first section of the opening movement of the drawer 53 from a closed one Position relative to the furniture body 51 in the opening direction M1 of the drawer 53.

The drawer 53 is slidably mounted on the furniture body 51 in the direction M1 and M2 via the guide means 52, for example two identical 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 piece of furniture 50 .

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

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

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 2 is designed essentially as a rectangular, elongated or strip-shaped component with a comparatively small height h of approximately 5 to 15 millimeters, for example. Furthermore, the base plate 2 has a width b of approximately 4 to 10 centimeters and a length g.

According to the exemplary embodiment shown, the force accumulator 3 comprises two parallel spiral springs 10, 11 of the same type, which form a spring assembly. The coil springs 10, 11 are arranged on an adjustable fixed bearing 13 at a first end 12 of the force accumulator 3. The fixed bearing 13 comprises a movable bearing part 14, on which the spiral springs 10, 11 are detachably but firmly accommodated, and an adjusting part 15 with an operating section 16, via which a user can adjust the position of the end 12 of the energy accumulator 3 from the outside in a variable position-fixed manner.

In this way, a force effect of the energy store 3 on the drawer 53 when the drawer 53 is opened can advantageously be preset.

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

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

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 P1 and the closing direction of the drawer 53 to the direction P2.

Furthermore, an assembled 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 tensioned state of the energy accumulator 3, in which the spiral springs 10, 11 are stretched or tensioned; in this case, the movement element 18 is offset in the direction P1 compared to a position on the base plate 2 that is retracted in the direction P2 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 continue to be tensioned, but to a lesser extent, and have a length L1.

In the clamped state of the force accumulator 3, the spiral springs 10, 11 have a length L2 which is greater than L1.

A holding element 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 accumulator 3 or the movement element 18 is operatively connected to the ejector 5, preferably only when the drawer 53 is closing - and moveable. For this purpose, a linear guide 20 is formed on the base plate 2, which z. B. on one side of the ejector 5 is matched.

An opening process of the drawer 53 brought about by the ejector unit 1 takes place exclusively via a direct operative connection of the energy accumulator 3 via the movement element 18 moving in direction P2 to the ejector 5 . 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 bothersome to the 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. By manually rotating 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 direction P1 or P2 depending on the direction of rotation. The adjusting screw 22 is in particular designed to be self-locking relative to the housing 45 . through the Position specification of the adjusting screw 22 is a measure of a front gap between the drawer front 55 of the drawer 53 closed on the furniture body 51 and end faces of the furniture body 51 can be specified.

The contact section 21 of the adjusting screw 22 is in the clamped or loaded state of the force accumulator 3 on a driver 23, which forms a stop for the contact section 21 in corresponding operating states. The in the Figures 3 to 8 Drivers 23, indicated only by dashed lines, can be present, for example, on a fixed rail of the guide means 52 or can be 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 part of the guide means 52 of the furniture 50 that is fixed in position, then the driver 23 can be present on the drawer 53 and can therefore be movable relative to the furniture body 51 .

Is based on the basic position of the ejector 1 according to figure 3 a lock on the ejector unit 1 lifted what figure 4 shows and is explained in more detail below, the tensioned or charged force accumulator 3 pulls the movement element 18 in direction P2, which presses or pushes the ejector 5 in direction P2 relative to the base plate 2 via the stop element 26.

As soon as the ejector 5 on the base plate 2 moves in direction P2, a latch component 24 pivotably mounted on the ejector 5 of the ejector unit 1 is moved from a pivoted-in position completely countersunk in relation to an outer edge of the base plate 2 figure 4 brought into a swing-out position with a lug 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, which is covered by other components, in particular by the ejector 5, is shown in FIGS 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 unloading state, with the energy accumulator 3 not being able to move the ejector 5 any further in the direction of 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 manual further movement of the drawer 53 in the opening direction M1 by a user. This is possible because the pawl component 24 pivoted out above the ejector 5 abuts the driver 23, whereby the ejector 5 reaches its end position, which is displaced as far as possible in the direction P2 on the base plate 2, in the further course of the drawer movement. When the end position on the ejector 5 is reached, the pawl component 24 is pivoted in again completely, which is predetermined by the interaction of the guide track 25 with the guide pin 24a on the pawl component 24 engaging therein.

If the drawer 53 is moved further in the opening direction M1 after the energy store 3 has been unloaded, the ejector unit 1 separates from the driver 24 and the contact between the driver 23 and the contact section 21 of the adjusting screw 22 is eliminated ( 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 direction P1. Compared to the spiral springs 10, 11 of the force accumulator 3, the spring elements 33 have a comparatively small force. With the movement of the ejector 5 in direction P1 by the force of the spring elements 33, an abutment portion 29 of the pawl component 24 in a waiting position of the ejector 5 is in direct, play-free brought into contact with a bearing pin 31 of a clamping lever 30 of the coupling device 4 ( figure 6 ). Bearing pin 31 is arranged at a first end of clamping lever 30 and can move freely along a linear guideway 27, for example, and/or a linear guide 63 formed on ejector 5, in particular during an opening process of drawer 53, until the pawl component 24 holds the bearing journal 31 and/or the tensioning lever 30 in direct, play-free contact with the ejector 5.

The waiting position of the ejector 5, which figure 6 shown is also a starting position of the ejector 5 for a loading process of the energy store 3 via the coupling device 4.

In addition to the clamping lever 30, the coupling device 4 comprises a guide lever 34 and a connecting element 35. The clamping lever 30 is articulated at a second end via a bearing pin 36 on the guide lever 34. The connecting element 35 is also articulated at a second end via a bearing pin 37 spaced apart from the bearing pin 36 on the guide lever 34 and at its first end via a further bearing pin 38 on the movement element 18 . At a first end, the guide lever 34 can be moved, in particular pivoted, on the base plate 2 via a bearing pin 39 . The bearing journal 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 force accumulator 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 is in contact with the wall section 47 after the energy accumulator 3 has been discharged, a tensile force in direction P2 is transmitted from the moving element 18 via the connecting element 35 to the guide lever 34 due to the remaining pretension of the spiral springs 10, 11. Due to the rigid design of the coupling device 4 and the impact of the stop element 42 on the wall section 47, the movement element 18 is prevented from moving further in 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, with the result that impact noise is reduced or prevented.

Due to its design, the guide lever 34 can transmit a force with a translation from the clamping lever 30 to the connecting element 35 when the energy store 3 is being clamped.

The transmission ratio is formed on the one hand by the ratio of the distance between the bearing pins 39 and 36 and 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 power store 4.

Due to their arrangement on the ejector unit 1, the elements of the coupling device 4 can move as follows:
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 , due to its mounting in the guide track 27 .

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

The bearing pin 36 and thus the second end of the tensioning lever 30 can only move 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 .

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

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

The beginning and the end of the loading process of the force accumulator 3 and 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 during the closing or on a section of the closing movement of the drawer 53 figure 6 .

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

By coupling the ejector 5 via the coupling device 4 to the energy store 3, the movement element 18 of the energy store 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 clamping process of the energy store 3, the ejector 5 is in a loading end position, this is in figure 7 shown. In the clamped state of the energy store 3, 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, wherein an unloading movement of the coupling device 4 is blocked by the locking member 7.

The tensioning of the energy accumulator 3 is fully completed before, for example, an automatic retraction mechanism for force-assisted retraction of the drawer 53 into the fully closed closed position on the furniture body 51 becomes effective. The automatic feed 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 tensioning of the energy accumulator 3, the further closing movement of the drawer 53 causes the ejector 5 to move in the direction P1 relative to the base plate 2 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 takes place through the interaction of the guide track 25 with the guide pin 24a on the pawl component 24, the pawl component 24 being pivoted away from the bearing pin 31 by the guidance of the guide pin 24a in the guide track 25 ( figure 8 ). In this state, the ejector 5 is decoupled from the coupling device 4 and can be moved 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 according to FIG figure 3 pending.

In the basic position of the ejector unit 1 according to figure 3 it is possible for a user to pull the drawer 53 manually in the opening direction M1 without an ejection function or without previously canceling the locking state. Here, the energy store 3 of the ejector unit 1 remains unactuated or loaded.

In order to eject the drawer 53 with the ejector unit 1 from the fully pushed in or closed position on the furniture carcass 51, a user must exert pressure on the drawer from the outside in the direction M2. For this purpose, the ejector unit 1 has a so-called touch-latch functionality on, which knows a locked state that can be unlocked by the closed on the furniture body 51 pushed-in drawer 53 is moved in the closing direction M2. This closing movement or the inward pressing of the drawer 53 in direction M2 takes place until a stop position is reached corresponding to a front gap which, when the drawer 53 is closed, is created in particular by a distance between an inside of the drawer front 55 and a front end face or the side walls 56 of the furniture carcass 51 is specified. The front gap is usually a few millimeters, for example about 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 M2 of a few millimeters or at most by the amount of the front gap is sufficient to reliably specify the unlocking and thus the power-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 is present 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 pushes it accordingly in the direction P1. The trigger 6 is present on the base plate 2 so that it can be displaced linearly to a limited extent in the direction P1 and P2, usually by a few millimeters or less than the size of the front gap.

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

With the rotary movement of the flap 43, the blockage of the guide lever 34 is released. The locking element 41 , which is pretensioned by a torsion spring 60 , preferably pivots out on the lever attachment 40 .

The locking element 41 projecting on the lever attachment 40 moves with the pivoting operation of the guide lever 34 below the flap 43 past the latter and continues the rotational movement of the flap 43 about the pivot axis D initiated by the trigger 6 without interruption. As a result, a rotation angle of the flap 43 from the locking position is advantageously increased. The ejector unit 1 is securely unlocked by the movement of the lever attachment 40 under the flap 43 and continued by the pivoting locking element 41 . A comparatively very small linear triggering movement of the trigger 6 in the direction P1 is advantageously required for this. The cap 43 is then pushed back into its locked position by the leaf spring 49 .

When the energy accumulator 3 is tensioned, the locking element 41, which is pivoted out on the lever attachment 40, again comes into contact with a front edge of the flap 43. The locking element 41 yields back against the spring force of the torsion spring 60, so that it comes so far against an edge of the lever attachment 40 is lowered so that the guide lever 34 with the lever attachment 40 can pivot past the flap 43 .

The locking element 41 is pivoted out again behind the flap 43 by the spring force of the torsion spring 60 . After the tensioning process, the guide lever 34 is pressed with the protruding locking element 41 against the flap 43 held in a locking manner by the leaf spring 49, as a result of which the energy store 3 is in the locked state.

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

Advantageously, the synchronizing rod 61 connects the locking member 7 to a second locking member present on the second device 62 . The two locking members are thus directly and/or synchronously movement-coupled. This represents a contrary synchronization principle to a connection between triggering elements of two ejector devices on a piece of furniture. <u>List of reference characters:</u> 1 ejector unit 33 spring element 2 base plate 34 guide lever 3 energy accumulator 35 fastener 4 coupling device 36 bearing journal 5 ejector 37 bearing journal 6 trigger 38 bearing journal 7 locking device 39 bearing journal 8th Front slit adjustment arrangement 40 lever attachment 41 locking element 9 cover component 42 stop element 10 spiral spring 43 flap 11 spiral spring 44 contact section 12 End 45 Housing 13 fixed bearing 46 operating section 14 bearing part 47 wall section 15 actuator 48 Wall 16 operating section 49 leaf spring 17 End 50 furniture 18 movement element 51 furniture body 19 guide contour 52 means of guidance 20 linear guide 53 Drawer 21 contact section 54 drawer bottom 22 adjusting screw 55 drawer front 23 driver 56 Side wall 24 latch assembly 57 drawer back panel 24a pilot 58 contraption 25 guideway 59 body side panel 26 stop element 60 Leg spring 27 guideway 61 synchronizer rod 28 - 62 contraption 29 investment section 63 linear guide 30 cocking lever 31 bearing journal 32 retaining organ

Claims (10)

1. Device (1, 58, 62) for moving a movable furniture part (53) in an opening direction in relation to a furniture body (51) of a piece of furniture (50), wherein the movable furniture part (53) can be moved in the opening direction and in a closing direction, which runs counter to the opening direction, via guide means (52), wherein the device (1, 58, 62) has an energy store (3) and an ejector (5), such that, by means of the device (1, 58, 62), which is mounted on the piece of furniture (50), it is possible to bring the movable furniture part (53) into an opening position via the ejector (5) under the action of the energy store (3) during an opening operation, wherein a coupling unit (4) is provided, which acts between the ejector (5) and the energy store (3) when the energy store (3) is undergoing a loading operation, wherein the ejector (5) is configured in such a way that the ejector, in the region of the end of its travel, couples to the coupling unit (4) in the course of the opening operation of the movable furniture part (53), and that, for a subsequent closing operation of the movable furniture part (53) and an associated loading operation of the energy store (3), the coupling between the ejector (5) and the energy store (3) via the coupling unit (4) acts without play, characterized in that a movable control member (24) is provided on the energy store or on the coupling device or on the ejector (5) in such a way that the ejector (5) can be brought into operative connection, without play, with the coupling unit (4) for a loading operation of the energy store (3) when the movable furniture part (53) takes up a predefined position in relation to the ejector (5).
2. Device (1, 58, 62) according to one of the preceding claims, characterized in that the ejector (5) couples to the coupling unit (4) without play when the ejector (5) returns to a waiting position in the closing direction from its end position during the opening operation.
3. Device (1, 58, 62) according to either of the preceding claims, characterized in that the ejector (5) is under a prestress in the waiting position.
4. Device (1, 58, 62) according to one of the preceding claims, characterized in that the device (1, 58, 62) comprises an elastic member (33), wherein the elastic member (33) forces the ejector (5) into its waiting position.
5. Device (1, 58, 62) according to the preceding Claim 1, characterized in that the movable control member (24) is arranged so as to be able to rotate on the ejector (5) of the device (1, 58, 62).
6. Device (1, 58, 62) according to the preceding Claim 1, characterized in that the movable control member (24) is guided in such a way that the ejector (5) of the device (1, 58, 62) can be brought into operative contact, without play, with the coupling unit (4) by moving the movable furniture part (53) in the opening direction.
7. Device (1, 58, 62) according to one of the preceding claims, characterized in that, during a movement of the movable furniture part (53) in the closing direction after ending the loading operation of the energy store (3) of the device (1, 58, 62), a coupling of the ejector (5) to a coupling member (30, 34, 31) of the coupling unit (4) is released.
8. Device (1, 58, 62) according to one of the preceding claims, characterized in that a coupling member (30, 34, 35) of the coupling unit (4) is guided movably on a slotted guide (19, 27, 63) by way of a first end (31, 38) .
9. Device (1, 58, 62) according to one of the preceding claims, characterized in that the movable control member (24) is in the form of a pawl element with a hook portion.
10. Piece of furniture (50) having a device (1, 58, 62) according to one of the preceding claims.

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