EP2400872B1 - Drawer guide for a furniture drawer component - Google Patents

Description

The present invention relates to a pullout guide for a furniture extracting part according to the preamble of claim 1.

Pull-out guides are known per se. From the EP 1755 423 B1 It is also known that the spring arrangement consists of two mutually parallel coil springs, which changes the spring characteristic with respect to a spring arrangement with only one spring.

From the EP 1 470 769 A1 Furthermore, a generic pullout guide is known. The same applies to the DE 203 11 795 U1 ,

Based on the generic pullout guide, it is the object of the invention to provide an improved pullout guide, which has the advantage of improved over the prior art operation optimized operating characteristics.

The invention solves this problem by the subject matter of claim 1 and the subject of claim 15.

The invention thus achieves in a simple manner a uniform during opening and especially when closing the drawer force-displacement curve, resulting in a more uniform, more pleasant handling and a optimized operation results. This result is achieved by a parallel connection of different springs, preferably a tension spring and a spiral spring, which springs preferably have opposite spring characteristics when the effective horizontal force is considered.

Preferably, the first spring is a force acting on pulling the furniture drawer part as a tension or compression spring coil spring, as it is preferably also used in the prior art for the realization of (self-) feeders, since it is compact to accommodate and good in itself is suitable to effect or at least assist the insertion of the drawer.

Preferably, the second spring is designed as a force acting on pulling the furniture drawer part as a tension or compression spring bending spring. A spiral spring is ideal for supplementing or changing the force-displacement characteristic of the first spring advantageous. It is also inexpensive to produce and can be integrated in the easiest way into the collection device, without their basic structure would have to be changed significantly.

Preferably, the spiral spring consists of a spring steel wire, which preferably has a rectangular or round cross-section.

According to a preferred variant, the first spring is designed such that the pull-in force of the first spring decreases over its effective Einzugsweg with the drawing of the drawer. In addition, it is expedient if the pull-in force of the second spring increases over a part of the pull-in path with the retraction of the drawer or if the pull-in force of the second spring is initially negative about its effective feed path (ie the force of the tension spring something - not too much reduced ) and then increases with the insertion of the drawer. The pull-in force of the second spring corresponds to its horizontal force component. Furthermore, in particular in the preferred definition At two points, individual regions of the second spring may advantageously be equipped with different spring characteristics in the sense of a scroll spring. Thus, by targeted modification of these individual spring characteristics a desired force-displacement characteristic of the second spring can be achieved. In particular, should be located in the determination at two points due to the sliding movement of the pin on the carriage resulting migratory "bending wave" before the pin. It would also be conceivable, however, that the pull-in force of the second spring is initially negative via its effective Einzugsweg and then increases with the retraction of the drawer when the "bending shaft" is initially behind and later before the journal of the carriage.

It is also possible to make the second spring two-armed, symmetrically mounted on the housing, to counteract any tilting of the carriage.

According to an advantageous variant of the invention, the design of the springs is such that the resulting pull-in force from the parallel circuit in the feed direction over the entire feed path remains constant (or alternatively at any rate almost constant), which leads to a particularly advantageous movement behavior.

• die Auslegung ist derart, dass die Kraft der Biegefeder auf den Schlitten eine horizontale und eine vertikale Komponente aufweist,
• die Auslegung ist derart, dass die vertikale Kraftkomponente über den Einzugsweg abnimmt.
• die Auslegung ist derart, dass die horizontale Kraftkomponente in Einzugsrichtung über den Einzugsweg zunimmt.
• die Auslegung ist derart, dass die Biegefeder zu Beginn des Einzugswegs nur eine vertikale Kraft auf den Schlitten ausübt
• die Auslegung ist derart, dass die Biegefeder zum Ende des Einzugswegs nur eine horizontale Kraft auf den Schlitten ausübt.

For an advantageous movement behavior further contribute the following preferred features individually or in combination:

• the design is such that the force of the spiral spring on the carriages has a horizontal and a vertical component,
• the design is such that the vertical force component decreases over the feed path.
• the design is such that the horizontal force component in the feed direction increases over the feed path.
• the design is such that the spiral spring exerts only a vertical force on the carriage at the beginning of the pull-in path
• the design is such that the spiral spring exerts only a horizontal force on the carriage at the end of the pull-in path.

Further features of the invention are the subject of the dependent claims.

Figur 1

eine Seitenansicht einer Auszugsführung mit einer Einzugsvorrichtung im geschlossenen Zustand eines Schubkastens;

Figur 2

eine perspektivische Ansicht der Anordnung aus Fig. 1 von vorne im geschlossenen Zustand des Schubkastens;

Figur 3

eine perspektivische Ansicht der Anordnung aus Fig. 1 von hinten Auszugsführung im geschlossenen Zustand des Schubkastens;

Figur 4-6

verschiedene Ansichten einer einzeln dargestellten zweiten Einzugsvorrichtung für eine Auszugsführung nach Art der Fig. 1;

Figur 7-9

verschiedene Ansichten einer dritten Einzugsvorrichtung für eine Auszugsführung nach Art der Fig. 1;

Figur 10-12

zu Fig. 4 bis 6 analoge Ansichten der Einzugsvorrichtung der Auszugsführung aus Fig. 1;

Figur 13

eine Seitenansicht der Einzugsvorrichtung der Auszugsführung aus Fig. 1 bis 3 in einer Stellung, die einem leicht geöffneten Schubkasten entspricht;

Figur 14, 15

verschiedene perspektivische Ansichten der Anordnung aus Fig. 13;

Fig. 16

einen Möbelkorpus mit der Auszugsführung aus Fig. 1;

Fig.17

eine Einzeldarstellung einer vierten Einzugsvorrichtung mit einem teilausgeblendeten Gehäuse; Auszugsführung im geschlossenen Zustand des Schubkastens;

Fig. 18-20

verschiedene Einzeldarstellungen der Einzugsvorrichtung der Auszugsführung aus Fig. 17;

Fig. 21-23

verschiedene Einzeldarstellungen der Einzugsvorrichtung der Auszugsführung aus Fig. 17; Auszugsführung im leicht geöffneten Zustand des Schubkastens;

Fig. 24

eine Einzeldarstellung einer fünften Einzugsvorrichtung mit einem teilausgeblendeten Gehäuse; Auszugsführung im geschlossenen Zustand des Schubkastens;

Fig. 25-27

verschiedene Einzeldarstellungen der Einzugsvorrichtung der Auszugsführung aus Fig. 24;

Fig. 28-30

verschiedene Einzeldarstellungen der Einzugsvorrichtung der Auszugsführung aus Fig. 24; Auszugsführung im leicht geöffneten Zustand des Schubkastens;

Fig. 31

eine Einzeldarstellung einer sechsten Einzugsvorrichtung mit einem teilausgeblendeten Gehäuse; Auszugsführung im geschlossenen Zustand des Schubkastens;

Fig. 32-35

verschiedene Einzeldarstellungen der Einzugsvorrichtung der Auszugsführung aus Fig. 31;

Fig. 36-38

verschiedene Einzeldarstellungen der Einzugsvorrichtung der Auszugsführung aus Fig. 31; Auszugsführung im leicht geöffneten Zustand des Schubkastens;

Fig. 39a-c

zwei schematische Darstellungen einer Einzugsvorrichtung und ein die Wirkungsweise der Einzugsvorrichtung darstellendes Diagramm.

Preferred embodiments of the invention are illustrated in the accompanying drawings and will be described in more detail below. Show it:

FIG. 1

a side view of a pullout guide with a retraction device in the closed state of a drawer;

FIG. 2

a perspective view of the arrangement Fig. 1 from the front in the closed state of the drawer;

FIG. 3

a perspective view of the arrangement Fig. 1 from the rear Pull-out guide in the closed state of the drawer;

Figure 4-6

various views of a single illustrated second retraction device for a pullout guide on the type of Fig. 1 ;

Figure 7-9

various views of a third collection device for a drawer guide on the type of Fig. 1 ;

Figure 10-12

to 4 to 6 analogous views of the collection device of the pullout guide Fig. 1 ;

FIG. 13

a side view of the collection device of the pullout guide Fig. 1 to 3 in a position corresponding to a slightly open drawer;

FIG. 14, 15

various perspective views of the arrangement Fig. 13 ;

Fig. 16

a furniture body with the pullout guide Fig. 1 ;

Figure 17

a single representation of a fourth collection device with a partially hidden housing; Pullout guide in the closed state of the drawer;

Fig. 18-20

various individual representations of the collection device of the pullout guide Fig. 17 ;

Fig. 21-23

various individual representations of the collection device of the pullout guide Fig. 17 ; Pullout guide in the slightly opened state of the drawer;

Fig. 24

a single representation of a fifth collection device with a partially hidden housing; Pullout guide in the closed state of the drawer;

Fig. 25-27

various individual representations of the collection device of the pullout guide Fig. 24 ;

Fig. 28-30

various individual representations of the collection device of the pullout guide Fig. 24 ; Pullout guide in the slightly opened state of the drawer;

Fig. 31

a single representation of a sixth collection device with a partially hidden housing; Pullout guide in the closed state of the drawer;

Fig. 32-35

various individual representations of the collection device of the pullout guide Fig. 31 ;

Fig. 36-38

various individual representations of the collection device of the pullout guide Fig. 31 ; Pullout guide in the slightly opened state of the drawer;

Fig. 39a-c

two schematic representations of a collection device and a diagram of the operation of the collection device diagram.

In the drawings, the reference numeral 1 a total of a drawer guide for a furniture drawer part, in particular for a (not shown here) drawer of a furniture body 2 - see Fig. 16 - designated.

The pullout guide 1 is used for vertical support and to guide the Möbelauszugsteiles. It has a carcass angle 3, a guide rail 10, optionally an optional middle rail and a running rail 4 for placing the furniture extracting part on, which is held here with a fishing hook 5 on the running rail 4.

With the pullout guide 1, the furniture pullout part, for example, in the form of a drawer in a conventional manner over a predetermined path in the pull-out direction X extendable horizontally.

Thus, the furniture drawer part is pulled when inserted into its maximum retraction position, the pullout guide 1 is provided with a between two relatively movable parts of the pullout guide acting retraction device 6, which has a spring assembly 7 with two springs 8, 9 (see also Fig. 17 ).

The collection device 6 has a base here a housing 11 - on, with which they after Fig. 1 to 3 in a preferred - but not mandatory - execution on the guide rail 10 of the carcass angle 3 is fixed.

In or on the housing 11, a carriage 12 is movably guided here with a running rail 4 towards open receptacle 13.

The carriage 12 engages - here with a lateral pin 14 - in a guide - here a guide slot 15 - a, which is a parallel to the pull-out X extending linear section 15a and to the front of the piece of furniture or in the withdrawal direction of the linear section 15a subsequent curve section 15b has ( Fig. 1 and 4 ).

In the receptacle 13 of the carriage engages a driver 16 of the running rail 4 (see Fig. 2 and 3 ).

The spring arrangement acts between the base 11 of the collection device 6 and the slide 12th

The first spring 8 of the spring arrangement is designed here as a helical spring, the longitudinal axis after Fig. 17 aligned parallel to the withdrawal direction X.

The front in the pull-out direction X end of this coil spring 8 is fixed to the carriage 12 and the other end to the base eleventh

• Beim Ausziehen des Möbelauszugsteils wird die Laufschiene 4 in Ausziehrichtung X bewegt, wobei der Mitnehmer 16 den Schlitten 12 mitnimmt und die Feder spannt. Beim weiteren Ausziehen bewegt sich der Schlitten 12 in den Kurvenabschnitt 15b, der derart - hier quer - zur Ausziehrichtung ausgerichtet ist, dass der Schlitten 12 beim weiteren Ausziehen in den Kurvenabschnitt 15 b einschwenkt, in dem er rastend verbleibt.

In this way, a collection device 6 is realized whose function is as follows:

• When pulling out the furniture extracting part, the running rail 4 is moved in the withdrawal direction X, wherein the driver 16 takes the carriage 12 and biases the spring. Upon further extension of the carriage 12 moves in the curved portion 15b, which is aligned - here transversely - to the withdrawal direction that the carriage 12 pivots on further extension in the curved portion 15 b, in which it remains latching.

In this state, the spring 8 in the tensioned state; The furniture pull-out part can be pulled out further.

When inserting the furniture extracting part, the collection device 6 initially does not work. As soon as the driver 16 engages the running rail 4 but again in the receptacle 13 and moves the carriage 12 back from the curved portion 15b in the linear portion 15a, the first spring 8 supports the retraction of the Möbelauszugsteils in its closed position.

It is possible to couple the carriage to a fluid damper 17 to dampen this retraction movement (not shown in detail here).

According to the invention, it is now provided to supplement the spring arrangement 7 by at least one second spring 9, which acts between the base 11 and the carriage 12.

In a particularly preferred embodiment, a parallel connection of the at least two springs 8, 9 is realized.

In this case, two springs 8, 9 are used, which have different spring characteristics.

Preferably, one of the two springs 8 - as described above - designed as a helical spring. Due to the force-displacement characteristics of the coil spring - which acts as a tension spring (see Fig. 39 ), the pull-in force at the beginning of the Einziehvorganges a maximum and then decreases. This has the consequence that the pull-in force at the beginning of the feeder is relatively high and relatively weak towards the end of the feeder.

This effect is counteracted by the second spring 9.

This spring 9 is designed and installed so that it has a different spring characteristic than the first spring 8 in the installed state in the horizontal direction (-X) when pulling in. As a result, a virtually uniform pull-in or pull-out force is achieved.

This can be realized in a simple manner by using a bending spring 9 as the second spring 9, which is fixed at least partially to the base (11) and at least partially coupled to the carriage (12) ( Fig.1 . 4 . 7 . 18 . 24 . 31 ).

After the in Fig. 1 illustrated embodiment, the bending spring 9 based on the horizontal force-path-course - which is important in the present case - increasing with the retraction path force-displacement curve.

This results in a preferred embodiment, a constant or even with the collection path slightly increasing force-displacement curve (see again Fig. 39a, b, c ).

The curved bending spring 9 is preferably arranged so that it from a maximum curvature position, in their free, facing away from the base, angled end aligned Fig. 1 even across the horizontal, in a less angularly oriented to the horizontal position or even pivoted horizontal position. It is also conceivable that the free end of the spiral spring 9 rests against a limiter 19 in order to minimize the space height.

Preferably, the arrangement is such that acts on the free end of the spiral spring 9, a pin 18 on the carriage 12, wherein the arrangement is such that the pin 18, the bending spring 9 in the "parking position" in which the pin 14 of the carriage in the curved Section 15b remains holding the free end of the spiral spring 9 in the horizontal position ( Fig. 13 . 14 . 15 ).

When reinserting the furniture drawer then acts after pivoting the carriage 12 from its parked position in the curve portion 15b first substantially the first spring 8, to which the spiral spring 9 is connected in parallel, so that the spring force of the second spring 9 to the spring force 8 of the first spring added ( Fig. 39 ).

After the arrangement of Fig. 1 or 7 the bending spring 9 exerts a horizontal and a vertical force component on the pin 18 on the carriage 12. The high vertical component at the beginning of the pull-in movement is increasingly being transformed into a horizontal component, so that the pull-in force of the bending spring 9 in the horizontal direction increases with the pull-in path.

Thus, the force-displacement curve is improved in a simple manner compared to the prior art.

To Fig.1 the bending spring 9 is formed from a flat strip, in particular from a sheet metal strip of spring steel. But it is also conceivable to form them from a wire, such as a round wire made of a spring steel ( Fig. 4-9 ). Other cross-sectional geometries (square, oval, etc.) are also conceivable.

It is also possible to bend the bending spring 9 into a basic contour, which deviates from the shape of a simple arc. So the bending spring 9 is after 4 to 6 bent into an S-shape.

This way, it can even be used to initially reduce the force of the first spring as it moves in.

The FIGS. 1 to 3 show a pullout guide with a feeder with a spiral spring 9 with a rectangular cross-section, with the spiral spring 9 and the coil spring 8 (acting here as a tension spring) are both in the nearly relaxed state.

The FIGS. 4 to 6 In contrast, show a collection device with an S-shaped bending spring 9 with a round cross-section in to Fig. 1 to 3 analog almost relaxed position.

The FIGS. 7 to 9 show a collection device with a simply bent bending spring 9 with a round cross-section in to Fig. 1 to 3 analog almost relaxed position.

The FIGS. 10 to 12 show the collection device of Fig. 1 with closed drawer and the rectangular spiral spring 9 and the coil spring 8 in the almost relaxed state, whereas the FIGS. 13 to 15 For this purpose, the tensioned state of the spiral spring 9 and the tension spring 8 play, the drawer is open.

As in the FIGS. 17 to 23 shown, the bending spring 9 can be fixed according to a further alternative embodiment with its two ends spaced on the base 11 so that it has a bending region between its ends (since it is longer than the distance of the fixing areas on the base 11) on the pin 18 acts. Individual areas of the spiral spring 9 can be equipped in the sense of a scroll spring by special manufacturing processes with different spring characteristics. In order to achieve the effect desired here, the resulting due to the sliding movement of the pin 18 migratory bending wave 20 - as the figures show - in front of the pin 18. Thus, by the targeted conditioning of the second spring 9, the total retraction force of the spring assembly 8, 9 with Increasing collection path increases and a nearly constant force-displacement characteristic can be achieved.

As in the FIGS. 24 to 30 is shown, the bending spring 9 can be set according to a further alternative embodiment with one end to the base 11 and the other end abut a limiter 19, so that the space height is kept low.

The FIGS. 31 to 38 show a collection device in which the second spring 9 is deformed over the pin 18, which is formed in this embodiment as an extension of the carriage 12. As in the embodiment before, one end of the second spring 9 is fixed to the base 11 and the other end abuts on the limiter 19. The second spring 9, the limiter 19 and the pin 18 formed on the slide 12 are integrated in the base 11, so that a compact design is created.

It should be noted that each of the two parallel-connected springs 8, 9 in turn can each consist of a series connection of two or more springs.

It is also conceivable to switch more than two springs parallel to each other.

It is also conceivable to summarize the functions of the pins 14 and 18 in only one pin (not shown here). The concept of the pin is also not too narrow. It comprises each element acting on the spring 9 by the carriage. It is also conceivable to let the pin 18 protrude from both sides of the base 11 and set a second spring 9 on both sides of the base 11, to counteract any tilting of the carriage.

Alternatively to the selected representation arrangements are conceivable in which the carriage is coupled to the carcass rail and the base with the guide rail (not shown here) or a center rail. There are also arrangements of the base directly on the body or on the movable furniture part conceivable.

It is also conceivable, instead of the tension spring 8 as a first spring to use a compression spring and / or instead of a coil spring another suitable spring (also not shown here). <B> reference numerals </ b> pull-out guide 1 furniture body 2 face angle 3 runner 4 hook 5 retraction device 6 spring assembly 7 First spring 8th Second spring, spiral spring 9 guide rail 10 casing 11 carriage 12 admission 13 spigot 14 guide slot 15 linear section 15a curve section 15b takeaway 16 fluid damper 17 spigot 18 limiter 19 flexural wave 20 pull-out X

Claims (16)

1. A pullout guide for a furniture pullout part, in particular for a drawer of a piece of furniture in the form of a cabinet, comprising a pullout guide for supporting and guiding the furniture pullout part, by means of which the furniture pullout part can be pulled out over a predefined pullout distance, wherein the pullout guide having a retraction device (6) having a spring configuration (7) for retracting the furniture pullout part at least over a part of the pullout distance, wherein the spring configuration has at least two springs, which are connected in parallel to one another, having spring characteristic curves, characterized in that the two springs, which are connected parallel to one another, have different spring characteristic curves with different force-distance characteristics acting in the pullout direction.
2. The pullout guide according to Claim 1, characterized in that the first spring (8) is a coiled spring (8) which acts as a tension or compression spring during retraction of the furniture pullout part.
3. The pullout guide according to Claim 1 or 2, characterized in that the second spring (8) is a torsion spring (9) which acts as a tension or compression spring during retraction of the furniture pullout part.
4. The pullout guide according to one of the preceding claims, characterized in that the two springs (8, 9) connected in parallel have different horizontal force-distance characteristics.
5. The pullout guide according to one of the preceding claims, characterized in that the torsion spring (9) is formed from a spring steel wire.
6. The pullout guide according to one of the preceding claims, characterized in that the spring steel wire has a rectangular or round cross-section.
7. The pullout guide according to one of the preceding claims, characterized in that the spring steel wire is bent into a single-curved shape.
8. The pullout guide according to one of the preceding claims, characterized in that the spring steel wire is bent into an S-shape.
9. The pullout guide according to one of the preceding claims, characterized in that the retraction device (6) has a base (11) and a slide (12), and both springs (8, 9) are at least partially fixed on the base (11) and at least partially coupled to the slide (12).
10. The pullout guide according to one of the preceding claims, characterized in that the retraction force of the first spring (8) decreases over its active retraction distance with the retraction of the drawer.
11. The pullout guide according to one of the preceding claims, characterized in that the retraction force of the second spring (9) increases with the retraction of the drawer over a part of the retraction distance.
12. The pullout guide according to one of the preceding claims, characterized in that the retraction force of the second spring (9) is initially negative over its active retraction distance and then increases with the retraction of the drawer.
13. The pullout guide according to one of the preceding claims, characterized in that a pin (18) of a slide (12) of the retraction device acts on the torsion spring, preferably such that the torsion spring (9) is pressed down by the pin (18) in the maximum pullout position of the slide.
14. The pullout guide according to Claim 13, characterized in that the spring (9) is fixed using its two ends spaced apart on the base (11), so that it has a bending area between its ends, on which the pin (18) acts.
15. A retraction device (6) for a pullout guide (1) for a furniture pullout part, having a spring configuration (7) for retracting the furniture pullout part over at least a part of the pullout distance, wherein the spring configuration (7) has at least two springs (8, 9), which are connected in parallel to one another, having spring characteristic curves, characterized in that the springs have different spring characteristic curves, wherein different force-distance characteristics acting in the pullout direction are provided.
16. The retraction device according to Claim 15, characterized in that the resulting retraction force from the parallel circuit of the springs remains constant or nearly constant in the retraction direction over the entire retraction distance.

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