EP2467550B1 - Furniture with actuating arm system - Google Patents

Description

The invention relates to a piece of furniture having the features of the preamble of claim 1.

Such furniture is out WO-A-2008/077520 known.

Such furniture with Stellarmanordnungen (high-hinged fittings) have been state of the art for some time. Above all, they serve to facilitate the folding-up movement or the raising movement for a user. To support opening movements of a furniture flap or a furniture part so-called TIP-ON mechanisms have been in use for many years. These can, for example, work according to the ballpoint pen principle, the ejecting part being pressed into the closed position when closing the furniture flap. In this position, the ejector is locked (for example, in a heart curve), after which the spring-loaded ejector is unlocked by overpressing behind the closed position - ie by pressing in the closing direction. As a result, the spring force can exert its effect and move the ejector of the ejection device in the opening direction, whereby the furniture flap or the furniture part fitting thereto is opened.

This principle is very helpful especially for heavy drawers or furniture doors without handles, because even after a relatively short automatic opening stroke, the complete opening can be done manually without additional support mechanisms by the user.

In contrast to extendable drawers or doors, this relatively small opening distance of a few centimeters in a furniture flap is not sufficient to end the opening movement by hand, since such upholstered furniture is often difficult to access and not easily accessible. Therefore, the folding-up movement is supported from a certain opening angle of the main power storage and the lever assembly or it is possible a neutral movement.

With relatively small and lightweight furniture flaps, the locking force of the main energy accumulator can be overcome by the ejector alone. But if large and heavy furniture flaps or a strong main power storage is used, the ejection device - the standard usually with a force of about 10 - 17 Newton on the lower area of the furniture flap acts - not overcome the locking force of acting on the furniture flap main energy storage.

Therefore, it has the object of the invention to provide a comparison with the prior art improved furniture that allows the use of a standard ejection device, the opening of the furniture flap even with large and heavy furniture flaps.

This object is achieved by a discharge support device arranged to a second lever of the lever assembly and movably coupled to the lever assembly for assisting the ejection movement of the ejection device, the discharge support device comprising a housing, at least one opening force-side support force accumulator for assisting the ejection movement of the ejection device and one guided by the support force memory, acting on a third lever of the lever assembly ram, wherein at least in over-forced closed position acting in the opening direction on the furniture flap, preferably measured in the lower furniture flap area spring forces of the ejection force accumulator of the ejection device and the support power accumulator together are greater than acting on the furniture flap , preferably in the lower furniture flap area measured locking force of the main force accumulator acting in the closing direction. In other words, this means that the support energy storage compensates or reduces the locking force of the main energy storage. This then relatively low clamping force can be overcome by the standard ejector, whereby the support energy storage together with the ejector brings sufficient force / torque on the furniture flap to overcome the locking force of the main power storage. The two opening forces together should be at least up to an opening angle of about 10 - 40 °, preferably between 20 and 30 ° higher than the locking force acting in this area.

Since the ejection device is preferably arranged in the lower region of the furniture body and acts there on the lower region of the furniture flap (in order to achieve better leverage), all of the force specifications given here refer to their effect in the lower region of the furniture flap. In particular, the Force information always measured at the lower edge of the front flap. So they say nothing about the pure force of the individual energy storage (main energy storage, ejection energy storage, support power storage), as they are kinematically amplified or changed by levers (can). Accordingly, a preferred embodiment provides that the forces acting on the furniture flap forces are measured in the lower furniture flap area, preferably on the front bottom.

In general, at least one of the force accumulators specified in this document can be embodied as another force-generating or elastic element (hydraulic device, motor, elastic compensation element, spring).

According to a preferred embodiment it can be provided that the spring force of the ejection device acting in the opening direction is in the suppressed closed position between 5 and 20 N, preferably between 10 and 17 N, particularly preferably between 12 and 15 N. For use in folding cabinets / furniture only relatively small ejection devices are useful because others would take up too much space or would protrude too far in the ejected state.

According to the invention, it is provided that the support-force accumulator is arranged in a housing and acts on a lever of the lever arrangement via a plunger guided by the support-force accumulator. This allows the translation to be optimized to a specific lever.

According to the invention, it is further contemplated that the backup power accumulator, the housing and the plunger together form an ejection support device disposed on and coupled to the lever assembly, the ejection support device forming a single easily replaceable assembly. The arrangement of the ejection support device directly on the lever arrangement means in other words that it is "floating" mounted on a second lever of the lever assembly. It thus moves with the lever assembly and can act over a longer opening path than the row ejector against the locking force of the main power storage. This is inventively achieved in that the ejection support device to a second lever the lever arrangement is arranged and acts on a third lever of the lever arrangement.

Preferably, it can also be provided for this purpose that the support power storage can be tensioned by the third lever of the lever arrangement when closing and the support power storage thereby also dampens the closing movement of the furniture flap.

In general, it should not be ruled out that the support energy storage acting on a lever of the lever arrangement can be unlocked by overpressing. As a result of the separate design of the ejection device and of the support force accumulator, the two force accumulators acting in the opening direction act at different locations in the furniture or on the actuating arm arrangement.

According to a further preferred embodiment it can be provided that the force acting in the opening direction spring force of the support force accumulator compensates the closing force acting in the closing direction of the main power accumulator in the closed position to a value which is less than the ejection force of the ejection device acting in the opening direction. Thus, the acting in the opening direction, cantilever support power storage is designed such that it provides the ejection device to open the furniture door after unlocking.

Generally Stellarmanordnungen for moving up a furniture flap of a piece of furniture are already known from the prior art, in which a lever assembly for moving the furniture flap, acting in the closing direction to hold the furniture flap main energy storage and a damping device which dampens the closing movement of the furniture flap known. As a result, a smooth and smooth closing of the furniture flap is achieved, especially in the last closing section without noisy slamming. In such damping devices already acting in the opening direction, relatively small spring is arranged, but only serves to extend the plunger after the opening movement of the furniture flap again. The plunger is prevented during the closing movement of the damping medium in general to a fast closing movement. In contrast, no effect of this plunger on a lever or on the furniture flap is achieved during the opening movement. It is merely moved by the auxiliary spring, the plunger in the opening direction, without the To be able to support opening movement of the furniture flap at all or influence. This plunger is thus rather influenced by the force of the damping medium than by the auxiliary spring. This is manifested above all in the fact that, when the furniture flap is opened, the plunger can not at all keep up with the movement of the levers, since an uninfluenced ejection of the plunger by the damping medium is prevented.

In order to provide an improved over the prior art support spring for the opening movement of an actuating arm is provided in a preferred embodiment of the furniture in the Stellarmanordnung that acts on the plunger only spring force of the support power storage for supporting a arranged on the furniture or on the Stellarmanordnung ejection device. Thus, the support spring can act directly on the lever of the lever assembly without any influence of a damping medium and support the opening movement. In particular, it can act on the plunger such that the plunger is always applied to the lever to its maximum open position of the support force memory.

Preferably, it is further provided for this purpose that the plunger, the support force accumulator and a housing together form an ejection support device, which is arranged on a second lever of the lever arrangement and acts on the plunger on a third lever of the lever arrangement. It is preferably provided here that the pure force of the support force accumulator does not overcome the locking force of the main energy accumulator. For this purpose, the arrangement of an additional TIP-ON device / ejection device on the Stellarmanordnung or furniture is necessary. In general, it should not be ruled out that a plurality of support force accumulators are arranged in one and the same area or in different areas of the actuating arm arrangement.

Furthermore, a preferred embodiment of the furniture may comprise a set consisting of a first and a second type of actuator arm assemblies for a flap of a furniture, wherein the first type additionally comprises a damping device which dampens the closing movement of the furniture flap. For a simpler stock keeping and a better and simpler manufacturing process for the two types of Among other things, it is preferable that the second type, instead of the damping device of the first type, has an ejection assisting device including at least one opening-directional plunger assisting force accumulator for assisting an ejection device disposed on the furniture or on one of the actuator arm assemblies includes, wherein the plunger rests against a third lever of the lever assembly or can be applied and acting on the plunger spring force of the support force storage only. It is to be prevented so that a manufacturer produces two product lines, in which most parts are the same and only in place of the damping device at substantially the same place a discharge support device is arranged.

For this purpose, it is preferably provided that the plunger and the support force accumulator are arranged or guided in a housing of the ejection support device. A particular advantage of this embodiment is that both types of Stellarmanordnungen for the most part are identical, wherein in the production only instead of the damping device, the ejection support device must be arranged together with Stützungskraftspeicher on otherwise identical second lever of the lever assembly and at least one ejection device to a Stellarmanordnung itself or should be provided on the furniture. In this regard, it may be preferred that the damping device of the first type and the discharge support device of the second type have substantially the same external dimensions. Thus, all kinematic properties of the remaining lever assembly or Stellarmanordnung be substantially unchanged in both types and both a comfortable closing and opening the furniture flap are guaranteed. Thus, the entire production and storage of the two Stellarmanordnungstypen is much more efficient.

Fig. 1 bis 5

in Schnittdarstellung den Öffnungsbewegungsablauf der Stellarmanordnung Typ 2 im Möbel,

Fig. 6

eine Ansicht der geöffneten Stellarmanordnung,

Fig. 7 bis 11

die Kraftauswirkungen der einzelnen Federn (Kraftspeicher) gemessen an der Möbelklappe,

Fig. 12 und 13

die Schließbewegung des Stellarmanordnungstyps 1

Fig. 14 und 15

die Öffnungsbewegung des Stellarmanordnungstyps 2 und

Fig. 16 und 17

einen alternativen Hebelanordnungsaufbau.

Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show:

Fig. 1 to 5

in sectional view the opening movement sequence of Stellarmanordnung type 2 in furniture,

Fig. 6

a view of the open Stellarmanordnung,

Fig. 7 to 11

the force effects of the individual springs (energy storage) measured on the furniture flap,

FIGS. 12 and 13

the closing movement of Stellarmanordnungstyps 1

FIGS. 14 and 15

the opening movement of Stellarmanordnungstyps 2 and

FIGS. 16 and 17

an alternative lever assembly construction.

Fig. 1 shows a piece of furniture 4 with a closed furniture flap 3 and a furniture body 14, wherein on a side wall of the furniture body 14 via a mounting or guide plate 26, the Stellarmanordnung type 2 is attached. This Stellarmanordnung type 2 has a connected via numerous joints with the mounting plate 26 lever assembly 5. This lever assembly 5 consists essentially of eight mechanically or kinematically connected together levers 9, 10, 17, 18, 19, 20, 21 and 22. By the lever assembly 5 is from the main power storage 7 (spring assembly), which on the one hand with the mounting plate 26 -. and thus is fixedly connected to the furniture body 14 - and on the other hand with a first lever or a hinge 33 of the lever assembly 5 is connected, clamping force over the entire lever assembly 5 and the related associated with this flap fitting 27 on the furniture flap 3. In this Fig. 1 the furniture flap 3 is shown in the closed position SS, ie the opening angle α ₀ is 0 °. In the case of the previous closing, not shown here, the ejection device 6, which is arranged in or on the furniture body 14, is brought into the closed position SS by the furniture flap 3. This can work, for example, as in the ballpoint pen principle. In this Fig. 1 schematically shows that the ejector 6a of the ejection device 6, not shown here, is guided over a heart cam 16 in the heart cam 15, wherein in this closed position SS, the heart cam 16 holds in the locked position in the heart cam 15. Furthermore, the ejection support device 8, which is arranged on a second lever 9 of the lever arrangement 5, is shown.

In Fig. 2 is now shown how the furniture flap 3 is brought by pressing a user with a finger in the closing direction SR in the overpressed closed position ÜS. In this case, the furniture flap 3 enters an opening angle α _-1 , which corresponds approximately to an opening angle of -0.5 °. As a result, the furniture flap 3 acts on the ejector 6a on the heart cam 16 which thereby passes from the locked position in the heart cam 15, whereby the spring-loaded ejector 6a of the Ejector 6 is released or no longer held and its unfolding in the opening direction OR on the furniture flap 3 force A unfold or can trigger.

This will be in Fig. 3 clearly, in which it can be seen that the ejector 6a brings the furniture flap 3 in the open position OS1. In this open position OS1, the opening angle α _{1 of} the furniture flap 3 is 7 ° (with other flap sizes, this angle may differ significantly). In the illustration according to Fig. 3 It can also be seen how the movement-coupled to the second lever 9 ejection support device 8 acts on its acted upon by the support force accumulator 12 plunger 24 on the third lever 10 and thus supports the opening movement of the ejector 6. The two forces acting on the furniture flap 3 forces A and U of the ejection device 6 and the support force memory 8 are greater than the clamping force Z of the main force memory. 7

In Fig. 4 3, the discharge support device 8 (consisting essentially of the support-energy accumulator 12, the housing 25 and the plunger 24) is shown as the furniture flap 3 of FIG Fig. 3 shown open position OS1 in the in Fig. 4 shown open position OS2 by overcoming the already open between the open position OS1 and the open position OS2 lower clamping force Z of the main energy storage brings. The opening angle α ₂ is 30 ° in the open position OS2 (this angle depends on the size of the flap and can thus also assume substantially higher or lower values). As a result of the discharge of the main force accumulator 7 and due to the lever effects of the individual levers of the lever arrangement 5, only a very small clamping force Z acts on the furniture flap 3 (see FIG Fig. 7 ). By appropriate balance and consideration of the flap weight and the main spring adjustment the furniture flap 3 can be kept neutral from this position in any position. From this open position OS2, the entire force acting in the opening direction OR of the ejection support device 8 was also given to the third lever 10 of the lever assembly 5 and thus to the furniture flap 3 on.

The adjustment of the spring force of the main energy accumulator 7 can be adjusted via the Federverstellmechanismus 23. By an adjustable shifting (see Fig. 4 and 5 ) of the retaining element 29 along the adjusting screw 28, the spring force Z of the main power accumulator 7 to the respective conditions (weight of the furniture flap 3, kinematic translation of the lever assembly 5, etc.) can be adjusted.

Fig. 5 shows the furniture flap 3 of the furniture 4 in the maximum open position OS3, wherein the opening angle α _{3 is} 100 °. Schematically, the ejector 6a acting on the ejector 11 of the ejector 6 is shown. Furthermore, the three hinge points 30, 31 and 32 are marked, via which the lever assembly 5 is limited rotatably mounted on the mounting plate 26.

In Fig. 6 is a view of the furniture 4 with a Stellarmanordnung 2 and 1 shown in the open position OS3. This illustration thus shows both the Stellarmanordnungstyp 1 and the Stellarmanordnungstyp 2. It is clear that the outer dimensions of the mounted on the lever assembly 5 ejection support device 8 and damping device 13 are substantially identical. In order to generally convert a Type 1 actuator arm assembly to Type 2, only replacement of the damping device 13 and exhaust support device 8 is necessary. In the lower region of the furniture body 14, one or more ejection devices 6 may be provided. Preferably, either a central ejection device 6 is arranged approximately in the middle, lower region of the furniture carcass or two ejection devices 6, in each case on the lateral, lower region of the furniture carcass 14. In Fig. 6 the furniture flap 3 is not shown, whereby the view of the connectable with the furniture flap 3 flap fitting 27 is released.

In the Fig. 7 to 11 diagrams of the measured at the furniture flap bottom 3a force curves with respect to the forces of the main force accumulator 7, support force memory 12 and the ejector 6 are shown. The vertical coordinates divide therein the force acting on the front lower surface 3a in Newton, positive Newtonian data showing the force Z acting in the closing direction SR and negative Newton values the force A and U acting in the opening direction OR. The horizontal axis shows the opening angle α in angular degrees starting from the vertical position of the closed furniture flap 3. By the in Fig. 7 shown Zuhaltekraftkurve Z is the locking force of the main energy accumulator 7 alone shown. It can be seen that from an opening angle α of about 40 °, the locking force is quite neutral. As a result, the furniture flap 3 can be kept balanced in this opening angle range. By the arrow Z _α , the concrete locking force of the main energy accumulator 7 is shown at an opening angle α ₁ with about 9 Newton. This should also be on Fig. 10 be referenced, on the one hand shows the kinematic achievable actual clamping force Z _IST and on the other hand, the theoretical target clamping force Z _SOLL represents. The difference between these two values is partly due to the inertia, the friction, the leverage, etc. justified.

In Fig. 11 is in the same way as in Fig. 10 the force U _IS and U _SOLL the backup power _storage 8 is shown. This force U has only negative Newton values, since it acts in the opening direction OR. The actual opening force U _IST counteracts the locking force Z when arranged on the lever arrangement 5. This is special Fig. 8 in which it is shown that the force U _{α of} the assisting force accumulator 8 compensates or reduces the holding force Z of the main force accumulator 7 shown in dashed lines. Thus, the curve in Fig. 8 the measured at the bottom of the furniture flap 3 force ZU if only the support force memory 8 and the main power storage 7 in the Stellarmanordnung 2 are present. That is according to this Fig. 8 the force U of the support force accumulator 8 is not enough to open the furniture flap 3.

According to Fig. 9 But this force U is sufficient to overcome the locking force Z together with the ejector force A. In other words, in other words, given an opening angle of α ₀ (or in the case of an overpressed position ÜS and opening angle α _-1 ), the concrete measured force values U _α + A _{α are} greater than the clamping force Z _α . Preferably, the added force A and U should be at least up to an angle α of about 10 ° greater than Z. By adjusting the individual spring forces a smooth opening of the furniture flap 3 can be guaranteed. This is evident, in particular, from the force curve ZUA arranged in the small negative Newton range. This allows a soft opening of the furniture flap and abrupt movements are prevented.

Fig. 12 shows a furniture 4 with a Stellarmanordnungstyp 1, wherein the damping device 13 in the closing direction SR moving furniture flap 3 attenuates. About the lever 19 and 10 while the plunger of the damping device 13th applied, whereby the closing movement is delayed. In Fig. 13 the Stellarmanordnungstyp 1 is shown in the closed position.

In Fig. 14 By contrast, the Stellarmanordnungstyp is shown in the closed position, the tensioned Stützungskraftspeicher 12 of the ejection support device 8 alone is not enough to allow the main power storage 7, not shown here and thus a movement in the opening direction OR of the furniture flap 3. This is how in Fig. 15 illustrated, the ejector 6 on the furniture body (could also be arranged on a lever or on the mounting plate 26) is provided which ejects the furniture flap 3 in the opening direction OR. This is achieved by assisting the unlocking relaxing support-force accumulator 12 of the ejection-assisting device 8.

Fig. 16 and 17 show the separately executed in the other figures lever 21 and 22 in one piece, being arranged on this one-piece lever of the Federverstellmechanismus 23 for the main power storage 7.

By the present invention thus a furniture with Stellarmanordnung, a Stellarmanordnung for opening heavy furniture flaps and a Stellarmanordnungsset is shown, especially the opening of heavy furniture flaps for users of furniture with highly movable furniture flaps is facilitated and made comfortable.

Claims (3)

1. Piece of furniture (4) with:

   - a furniture body (14),

   - a furniture flap (3),

   - an adjusting arm arrangement (2) for the furniture flap (3) of the piece of furniture (4), wherein the adjusting arm arrangement (2) comprises a lever arrangement (5) for moving the furniture flap (3), a fixing plate (26), by which the adjusting arm arrangement (2) is fixed to the furniture body (14), a flap bracket (27) which is in connection with the lever arrangement (5) and which is connected to the furniture flap (3), and a main spring (7) acting in closing direction (SR), for locking the furniture flap (3), wherein the main spring (7) is connected on the one hand with the fixing plate (26) and on the other hand with a first lever (21, 22) of the lever arrangement (5), wherein locking force can be exerted via the whole lever arrangement (5) and the flap bracket (27) onto the furniture flap (3), and

   - an ejection device (6), attached to the piece of furniture (4) or to the adjusting arm arrangement (2), with a pusher (6a) actuated by an ejection force storage means (11) for effecting an ejecting movement of the furniture flap (3) in opening direction (OR), wherein the pusher (6a) is lockable in a closing position (SS) of the furniture flap (3), whereupon the pusher (6a) is unlockable by overpressing the furniture flap (3) in closing direction (SR) behind the closing position (SS),

   characterized by

   - an ejection-support device (8) for supporting the ejecting movement of the ejecting device (6), wherein the ejection-support device (8) is arranged on a second lever (9) of the lever arrangement (5) and is motionally coupled with the lever arrangement (5), wherein the ejection-support device (8) comprises a housing (25), at least one support force storage means (12), acting in opening direction (OR), being separate from the ejection device (6) and being arranged in the housing (25), for supporting the ejection movement of the ejection device (6), and a pusher (24) guided by the support force storage means (12) and acting on a third lever (10) of the lever arrangement (5),

   wherein at least in overpressed closed position (ÜS) the spring forces (A, U), acting in opening direction (OR) on the furniture flap (3) of the ejection device (6) and of the support force storage means (12) are together greater than the locking force (Z) acting on the furniture flap (3) of the main spring (7) acting in closing direction (SR).
2. Piece of furniture according to claim 1, characterized in that the spring force (A), acting in opening direction (OR), of the ejection device (6) in overpressed closed position (ÜS) is between 5 and 20 N, preferably between 12 and 15 N.
3. Piece of furniture according to claim 1 or 2, characterized in that the support force storage means (12) can be tensioned by the third lever (10) of the lever arrangement (5) during closing and the support force storage means (12) also damps the closing movement of the furniture flap (3).

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