EP2807320B1 - Pull-out device for at least two pull-out furniture parts - Google Patents

Description

The invention relates to a Ausziehsperrvorrichtung for at least two extendable furniture parts, which are retractable from a furniture body from a fully retracted position to a fully extended position in a pull-out direction and counter to the pull-out in the furniture body, comprising for each of the pull-out furniture part on undressing the extendable furniture part in the pull-out and when retracting the pull-out furniture part against the pull-out shifted driver, for each of the pull-out furniture parts a locking unit, which has an adjusted by the movement of the driver when pulling out and retracting one of the extendable furniture parts operating part, cooperating with the operating parts locking rods which are slidably mounted in the direction of their longitudinal axes, wherein a respective, by the movement of the associated driver when pulling out the associated extendable Möbelte ils displaced actuating member shifts at least one of the locking rods in the direction of its longitudinal axis and thereby the locking bars are blocked by a stop against further axial displacement, each of the locking units has a pivotally mounted about a stationary, parallel to the longitudinal axes of the locking rods pivot arm mounted, the from the associated driver when pulling out the associated pull-out furniture part of an initial position, which occupies the tentacle in the fully retracted position of the extendable furniture part, in an end position, which occupies the tentacle in the fully extended position of the extendable furniture part, and this is the operating part adjusted this blocking unit.

By Ausziehsperrvorrichtungen is a simultaneous withdrawal of two or more by the Ausziehsperrvorrichtung coupled extendable furniture parts, such as superimposed drawers prevented. The extendable furniture parts are therefore only alternately extendable. A central locking is often realized on such Ausziehsperrvorrichtungen.

In a conventional embodiment, such Ausziehsperrvorrichtung on locking bars, which have only a limited space for their displacement. For each extendable furniture part an actuating part is provided, which cooperates with at least one of the locking rods. When you take off one of the extendable furniture parts at least one of the locking rods is moved by the corresponding operating part. The space for the displacement of the locking rods is used up and the locking bars are blocked by a stop against further displacement. Another extendable furniture part can not be pulled out at the same time.

Ausziehsperrvorrichtungen with locking rods are known in different embodiments. For example, the DE 29 620 152 U1 . EP 1 336 709 A1 and WO 2008/107499 A1 show an actuation of the locking rods by actuating parts which are pivoted when removing the respective extendable furniture part from the driver about a right angle to the longitudinal axes of the locking rods pivot axis. Apart from the actuating part, which is provided for the displacement of the farthest from the stop located locking bar, the operating parts are each between two of the locking bars and are arranged together with these slidably. Similarly formed Ausziehsperrvorrichtungen, but here the actuating parts are pivotable about axes that are parallel to the longitudinal axes of the locking bars, go out of the DE 34 31 386 C2 . DE 93 11 534 U1 and DE 43 25 920 C2 out.

The GB 2376043 A shows a Ausziehsperrvorrichtung in which the cooperating with the locking rods operating parts are pivotable about lying parallel to the longitudinal axes of the actuating rods pivot axes. The Actuators are provided with radially projecting extensions which form tentacles which are actuated by the attached to the pull-out furniture parts drivers. When you take off one of the extendable furniture parts of the catch arm is pivoted from the driver from an initial position to an end position, wherein a portion of the tentacle retracts into a recess and locked in this, which is provided in a respective housing. The housings store the locking bars displaceable. The rotatable mounting of the operating parts and with them the tentacles by axial projections of the actuating parts, which are received by axial openings in end portions of the locking bars.

From the EP 1 500 763 A2 is a Ausziehsperrvorrichtung out, which is combined with a retractor. Retractors (also known as self-closing or feed mechanisms) serve to automatically pull in an extendable furniture part over a final section of its Einfahrweges and thus ensure the fully retracted state of the pull-out furniture part. At the time of the EP 1 500 763 A2 known device cooperating with the locking rods operating parts are formed by linearly slidably mounted carriage. These slides are each acted upon by a collection spring, which is stretched when moving the carriage from the initial position to the end position of the carriage. On the carriage, a tilting part is mounted pivotably about a parallel to the locking rods lying, with the carriage mitbewegte axis. When you take off one of the extendable furniture parts whose driver engages in the tilting part and takes the tilting part and thus the slide with until the carriage reaches its end position, the tilting tilted, whereby the driver can extend and a locking of the carriage is achieved in the final position , When retracting the extendable furniture part of the oncoming driver pivots back the tilting part, whereby the driver couples to the tilting part and the locking of the carriage is lifted in the end position, so that the carriage is pulled by the intake spring in the direction of its initial position. The movement of the carriage is damped here by a damper, which is formed by a piston-cylinder unit.

Retractors with and without damping devices are known from a variety of other publications. For example, goes from the AT 401334 B a feed mechanism out, in which a displaceable against the force of a spring tilting slide is present. The tilting slide is arranged tiltable about a tilting axis on a slide which can be moved in a straight line in the pull-out direction of the drawer against the force of the spring. At the time of the AT 393948 B Known retraction device is also a tilt slide available, which is displaceable along a guideway against the force of a spring. The guideway has a straight portion and a bent portion, which causes the pivoting of the tilting slide about an imaginary tilting axis in its tilted end position. Another damped retraction device, in which the tilting slide cooperates with a insertion damper, is for example from EP 1 532 892 A1 known. The spring-loaded tilt slide cooperates here with a linear damper in the form of a piston-cylinder unit, which in particular acts pneumatically. Even damped by means of rotary dampers Selbsteinzüge are known.

From the EP 1 384 420 B1 is a retraction device with a kinked, about a stationary horizontal axis rotatably mounted arm before, which is acted upon by a collection spring, which is integrated into a damper forming a piston-cylinder unit. At the back of the extendable furniture part cooperating with the catch arm driver is arranged, which has a slide track. When pulling out the pull-out furniture part of the arm is pivoted starting from an initial position about the horizontal axis in an end position in which the driver decouples from the arm. When pivoting the arm from the initial position to the end position, a dead center of the intake spring is run over.

From the GB 1,117,071 shows a locking device, in which a spring-loaded catch part, which is pivotally mounted about an axis, of a mounted on the extendable furniture part driver between a Initial position and the end position is pivoted. The spring is moved over a dead center.

Other trained in the form of piston-cylinder units damper for damping the retraction of movably mounted furniture parts go for example from the DE 20 2005 020 820 U1 and DE 10 213 726 A1 out. Known are further rotational damper, in which a highly viscous damping medium is arranged in a gap between a fixed damper part and a rotatably mounted damper part. The braking force is caused by this sheared damping medium. Damper of this kind, for example, go from the DE 10 210 917 C1 . US 5,277,282 A . JP 59-222631 A and US 5,143,432 A out.

Furthermore, purely mechanically acting friction damper are known. So go for example from the DE 19 938 626A1 . DE 201 16 197 U1 and JP 01-266331 A Umschlingungsteile out, which surround an internal friction and form with this a friction pairing. Friction dampers have the disadvantage that the braking force exerted by them is basically independent of speed.

From the DE 10 313 659 B3 . DE 10 214 596 A1 . DE 19 717 937 A1 . AT 503 877 B1 and EP 1 260 159 A2 go piston-cylinder units in which a between the two sides of the piston forming air pressure difference acts on an elastically deformable piston part, so that the applied friction force depends on the air pressure difference and thus on the speed of the component to be damped. A vehicle shock absorber, in which a flexibly formed loop part, which bears rubbing against an inner friction part formed by a friction drum, emerges from the DE 601 293 C out. By coupling one end of the belt part with a hydraulically acting damper, the frictional force acting between the belt part and the friction drum can be influenced.

A pull-out locking device of the type mentioned is from the US 4,732,434 A out. Drivers arranged on the drawers act together via tentacles with operating parts. The operating parts are pivoted when pulling the drawers each about vertical axes and cooperate with locking rods. In the extended state of a drawer, a spring arranged above the uppermost locking bar is tensioned.

A similar Ausziehsperrvorrichtung goes out of the GB 2 302 90 ö A The here somewhat differently shaped actuating parts in turn interact with locking rods and are actuated by pivotable about vertical axes tentacles.

From the DE 296 22 864 U1 goes out a Unterflurausziehführung, which is designed as a full-extract. For this purpose, a hollow profile section, the cross section of which coincides with the cross section of the running rail, is pivotably articulated on the inner end of the carousel. At this hollow profile section, a control member, in particular in the form of a control roller 32 is arranged, which cooperates with a curved end portion of a guide rail. By a resilient bias of the pivotable hollow profile section and a self-closing can be formed.

The object of the invention is to provide an improved pull-out locking device of the type mentioned with integrated retraction device. According to the invention, this is achieved by a pull-out locking device having the features of claim 1.

In the pull-out locking device of the invention, each of the locking units on a about a stationary, parallel to the longitudinal axes of the locking rods pivot axis pivotally mounted tentacle on which the draw-in spring this blocking unit is acted upon. The tentacle is pivoted from its associated driver (that is, the one that interacts with this tentacle arm) when pulling out the associated pull-out furniture part (which is the one with which this driver moves when pulling out and retracting) from an initial position to an end position, if associated extendable furniture part is moved from its fully retracted position to its fully extended position or the driver is moved by a corresponding way.

If the driver has pulled the tentacle from its initial to its end position when pulling out the pull-out furniture part, the driver disconnects from the tentacle during further extension of the pull-out furniture part.

When pivoting the respective tentacle arm from its initial position to the end position of the tentacle moves the operating part directly or indirectly via at least one transmission member. Preferably, the actuating part is a separate from the tentacle, with this directly or via the at least one transmission member coupled component. A one-piece training with the tentacle is conceivable and possible.

The invention enables a compact and stable design. In this case, a suitable for heavy duty training is also possible. For heavy-duty pull-out furniture parts are provided, of which one, several or all are loaded with more than 150kg.

In particular, the locking rods between the actuating members extending locking rods and a locking bar extending between the operating part of the locking unit, which is associated with one of the peripheral telescopic furniture parts, and the stop, wherein all the locking rods are displaced together with the intermediate operating parts.

A catch spring acting upon a respective catch arm is stretched more in the end position of the catching arm than in the initial position of the catching arm. Preferably, during the pivoting of the tentacle arm from its initial position to its end position, a dead center of the withdrawal spring is overcome. The tentacle is thus held by the feeder spring in its end position after the co-operating with the tentacle driver has disconnected when pulling out the pull-out furniture part of the tentacle.

Advantageously, a respective tentacle of a stationary (= rigidly connected to the furniture body or connectable) bearing unit of the respective locking unit is rotatably mounted, which also slidably supports at least one of the locking bars. Conveniently, a respective bearing unit for this purpose has a bearing unit in the direction of the longitudinal axes of the locking rods, ie in the direction of the pivot axis of the tentacle, completely penetrating cavity. Each cavity receives a portion of at least one of the locking bars. In this way, a particularly compact training is possible. Conveniently, the tentacle is rotatably mounted on at least one surface of the storage unit surrounding the cavity.

In an advantageous embodiment of the invention, the Ausziehsperrvorrichtung comprises a damping device for damping the insertion of a respective extendable furniture part, wherein the pivoting of the tentacle is attenuated from the end position to the initial position by this damping device. In a particularly preferred embodiment, this damping device comprises at least one rotary damper or is formed by such, wherein the rotary damper has at least one part driven by the tentacle during pivoting of the tentacle from its end position in the initial position, which is used to exert a braking force during the pivoting of Fangarms is rotated from its end position in its initial position relative to a detained part about the stationary pivot axis of the tentacle. It can thereby be an advantageous, very compact training Einziehsperrvorrichtung be achieved with an integrated damped self-closing, with a suitable training for high loads is made possible.

The furniture in which the Ausziehsperrvorrichtung is used, in addition to the pull-out furniture parts for which the Ausziehsperrvorrichtung is used, have one or more other extendable furniture parts that are not coupled to the Ausziehsperrvorrichtung, so are independently extendable, whether already other pull-out furniture part of the furniture is pulled out.

• Fig. 1 eine Schrägsicht einer erfindungsgemäßen Ausziehsperrvorrichtung im an einem Möbel montierten Zustand, alle ausziehbaren Möbelteile eingefahren;
• Fig. 2 eine Schrägsicht entsprechend Fig. 1, aber eines der ausziehbaren Möbelteile ausgezogen;
• Fig. 3 eine Seitenansicht auf einen Teil der Vorrichtung im Zustand von Fig. 1;
• Fig. 4 eine Seitenansicht entsprechend Fig. 3, aber im Zustand von Fig. 2;
• Fig. 5 eine Schrägsicht der beiden obersten Sperreinheiten mit den mit ihnen zusammenwirkenden Mitnehmern sowie Sperrstangen, im Zustand von Fig. 1;
• Fig. 6 eine Schrägsicht entsprechend Fig. 5, aber im Zustand von Fig. 2;
• Fig. 7 und 8 Darstellungen entsprechend Fig. 5 und Fig. 6, aber in Seitenansicht, mit zusätzlicher schematischer Andeutung des Anschlags für die Sperrstangen;
• Fig. 9 eine Schrägsicht einer der Ausziehsperreinheiten mit den mit ihr zusammenwirkenden Sperrstangen im an einer Montageschiene montierten Zustand, aus einer gegenüber den Fig. 5 und 6 unterschiedlichen Blickrichtung;
• Fig. 10 eine Explosionsdarstellung der Teile von Fig. 9;
• Fig. 10a eine Schrägsicht des mit der Dämpferhülse in Eingriff stehenden Umschlingungsteils aus einer gegenüber Fig. 10 unterschiedlichen Blickrichtung;
• Fig. 11 eine Seitenansicht der Teile von Fig. 9;
• Fig. 12 eine Darstellung entsprechend Fig. 11, aber im Längsmittelschnitt der Sperreinheit;
• Fig. 13 einen Querschnitt entlang der Linie AA von Fig. 11 bzw. 12;
• Fig. 14 und 15 Querschnitte der Sperreinheit entsprechend Fig. 13, aber in unterschiedlichen Schwenkstellungen des Fangarms;
• Fig. 16 einen Querschnitt entlang der Linie BB von Fig. 11 bzw. 12;
• Fig. 17 eine im Längsmittelschnitt aufgeschnittene Schrägsicht der Sperreinheit mit den mit ihr zusammenwirkenden Sperrstangen, in der Anfangsstellung des Fangarms;
• Fig. 18 eine Darstellung entsprechend Fig. 17, wobei aber im Gegensatz zu Fig. 17 eines der darunterliegenden ausziehbaren Möbelteile ausgezogen ist;
• Fig. 19 eine Darstellung entsprechend Fig. 17, aber in der Endstellung des Fangarms;
• Fig. 20 eine Darstellung zur Erläuterung der Einfahrbewegung der Vorsprünge des Fangarms in die Kulissenbahnen des Mitnehmers;
• Fig. 21 und 22 schematische Darstellungen einer alternativen Ausführungsvariante für die Betätigung der Sperrstangen;
• Fig. 23 und 24 Darstellungen entsprechend Fig. 21 und 22 aber ohne die Betätigungshülse.

Further advantages and details of the invention are explained below with reference to the accompanying drawings. In this show:

• Fig. 1 an oblique view of a Ausziehsperrvorrichtung invention in mounted on a furniture state, all retractable furniture parts retracted;
• Fig. 2 an oblique view accordingly Fig. 1 but one of the pull-out furniture parts undressed;
• Fig. 3 a side view of a part of the device in the state of Fig. 1 ;
• Fig. 4 a side view accordingly Fig. 3 but in the state of Fig. 2 ;
• Fig. 5 an oblique view of the two upper locking units with the cooperating with them drivers and locking rods, in the state of Fig. 1 ;
• Fig. 6 an oblique view accordingly Fig. 5 but in the state of Fig. 2 ;
• FIGS. 7 and 8 Representations accordingly Fig. 5 and Fig. 6 but in side view, with additional schematic indication of the stopper for the locking rods;
• Fig. 9 an oblique view of the Ausziehsperreinheiten with the cooperating locking rods in the mounted on a mounting rail state, from one against the FIGS. 5 and 6 different view;
• Fig. 10 an exploded view of the parts of Fig. 9 ;
• Fig. 10a an oblique view of the engaging with the damper sleeve Umschlingungsteils from one opposite Fig. 10 different view;
• Fig. 11 a side view of the parts of Fig. 9 ;
• Fig. 12 a representation accordingly Fig. 11 but in the longitudinal middle section of the barrier unit;
• Fig. 13 a cross section along the line AA of Fig. 11 or 12;
• FIGS. 14 and 15 Cross sections of the barrier unit accordingly Fig. 13 but in different pivoting positions of the tentacle;
• Fig. 16 a cross section along the line BB of Fig. 11 or 12;
• Fig. 17 an obliquely cut in the longitudinal center section oblique view of the locking unit with the cooperating with them locking rods, in the initial position of the tentacle;
• Fig. 18 a representation accordingly Fig. 17 , but in contrast to Fig. 17 one of the underlying extendable furniture parts is pulled out;
• Fig. 19 a representation accordingly Fig. 17 but in the end position of the tentacle;
• Fig. 20 a representation for explaining the retraction movement of the projections of the tentacle in the slide tracks of the driver;
• FIGS. 21 and 22 schematic representations of an alternative embodiment for the operation of the locking bars;
• FIGS. 23 and 24 Representations accordingly FIGS. 21 and 22 but without the actuating sleeve.

An embodiment of a device according to the invention is in the Fig. 1 to 20 shown. The device is used here to form a Ausziehsperrvorrichtung trained in the form of drawers extendable furniture parts 1. A device according to the invention can also be designed as Ausziehsperrvorrichtung for other types of extendable furniture parts, eg for tall cabinet extensions.

The extendable furniture parts 1 can not shown in the figures extend guides in a pull-44 from the (in the Fig. 1 and 2 indicated by dashed lines) furniture body 30 are pulled out and retracted counter to the withdrawal direction 44 in the furniture body 30. At the back (based on the pull-out 44) of a respective extendable furniture part 1, a driver 2 is attached to this, which thus moves with the extension and retraction of the extendable furniture part 1 with this.

The apparatus comprises for each of the extendable furniture parts 1 a respective blocking unit 60, i. it is for each of the (included in the pull-out device) furniture parts own (= separate) lock unit 60 available. In the exemplary embodiment, the locking units 60 are attached to a mounted on the furniture body 30 mounting rail 29. A direct attachment of the respective locking unit 60 on the furniture body 30 would be conceivable and possible.

Each of the barrier units 60 has a catching arm 5 mounted pivotably about a stationary (= fixed with respect to the furniture body 30) pivot axis 6. A respective tentacle 5 cooperates with the associated driver 2, in the illustrated embodiment by the cam 2 formed on cam tracks 3 and arranged on the tentacle, formed by rollers projections 4. The driver 2 is in this case U-shaped and has on opposite, on both sides of a Connecting leg 2c projecting side cheeks 2a, 2b, the opposing slide tracks 3, which cooperate with the two projections 4. Also, a single co-operating with a projection 4 of the driver 2 slide track 3 could be provided. The at least one projection could also be formed by a pin. A reverse training is possible in which at least one slide track 3 on the catch arm 5 and at least one projection 4 on the driver 2 is provided.

In the fully retracted state of each of the pull-out furniture parts 1 takes the respectively associated tentacle 5 its initial position. When you take off one of the extendable furniture parts 1 of the associated tentacle 5 is pivoted in the direction of rotation 26a about the pivot axis 6 until it reaches its end position. In this position of the tentacle 5, the driver 2 decoupled from the tentacle 5. The pull-out furniture part 1 can be further extended in the sequence until it reaches its fully extended position. When inserting the extendable furniture part 1 in the direction opposite to the withdrawal direction 44 of the driver 2 runs to the located in its end position tentacle 5 at. It then follows a mutual coupling, these two parts and a turning back of the Fangarms 5 in the opposite direction of rotation 26b about the pivot axis 6 until the tentacle 5 again assumes the initial position and the extendable furniture part 1 assumes its fully retracted position.

Also trained in other form driving compounds, for example, a substantially V-shaped recess, in which a projection enters to adjust the catch arm 5 from the driver 2 between the initial position and the end position and back, are possible. Different types of possible driving connections are known, for example, from conventional pull-out furniture parts with Einziehmechaniken ago.

In the coupled state of the tentacle 5 with the driver 2 there is a positive connection between these two parts relative to the withdrawal direction 44 and the opposite insertion direction.

The Fig. 1 shows the state in which all extendable furniture parts 1 occupy their fully retracted position. The Fig. 2 shows the state in which one of the extendable furniture parts 1 is at least so far extended that the driver has decoupled 2 from the tentacle 5 and the tentacle 5 is in its final position. The tentacles 5 are in this case coupled such that a pivoting of the other, located in their initial positions tentacles 5 is blocked around the pivot axis 6 in the direction of their end positions. The other extendable furniture parts 1 are thus blocked in their fully retracted positions. One of the other extendable furniture parts 1 can only be pulled out after the solid furniture part 1 has been retracted again. This coupling of the tentacles 5, by which only one of the extendable furniture parts 1 can be pulled out at the same time (ie the extendable furniture parts 1 are alternately extendable) will be explained in more detail below.

In the Ausziehsperrvorrichtung invention are retracting devices for the telescoping device coupled together by the extendable furniture parts 1 integrated. By means of these pull-in devices, a respective one of the pull-out furniture parts 1 is automatically pulled in during retraction via a last section of its insertion path.

For this purpose, on the one hand on the catch arm 5 and on the other hand engages a non-rotatably and non-rotatably relative to the furniture body 30 arranged part, in the embodiment of the housing part 28, a pull-in spring 27. The housing part 28 is rotatably connected to the mounting rail 29, which in turn is rigidly mounted on the furniture body 30. However, a direct mounting of the housing part 28 on the furniture body 30 is possible.

To connect the pull-in spring 27 with the housing part 28, for example, latching arms 43 may be arranged on the housing part 28, between which the inner (= closer to the pivot axis 6) end of the pull-in spring 27 can be engaged. If the pull-in spring 27 can be connected at different distances from the pivot axis 6 with the housing part 28, for example by a plurality of latching arms 43 are provided, the strength of the pull-in force can be changed by different biases of the pull-in spring 27. Also connection possibilities at different locations of the tentacle 5 may be provided or a continuous change of the distance from the pivot axis 6, e.g. by an eccentric element, can be provided.

When pivoting the tentacle 5 in the direction of rotation 26a starting from its in Fig. 15 illustrated initial position in the direction of its end position, the pull-in spring 27 is first stretched, see. FIGS. 15 and 14 , Shortly before reaching the end position, a dead center is crossed (this is the in Fig. 14 shown position), as a result, the pull-in spring 27 until reaching the in Fig. 13 again slightly relaxed (by preferably less than one fifth of the previous compression stroke).

When inserting the pull-out furniture part of the driver 2 to the Catch arm 5 starts, so the driver 2 pivots the tentacle 5 in the direction of rotation 26b over the dead center of the spring 27. In the position of the tentacle 5, in which the dead center of the spring 27 is present, the at least one projection 4 is already so far in the at least one slide track 3 run that at a further, caused by the recoil spring 27 pivoting of the tentacle 5 about the pivot axis 6 of the tentacle 5 relative to the withdrawal direction 44 is positively connected to the driver 2 and the extendable furniture part 1 from the tentacle 5 by the force the pull-in spring 27 is retracted until the in Fig. 15 illustrated initial position of the tentacle 5 is reached.

Upon pivoting of the catching arm 5 in the direction of rotation 26a, further pivoting of the catching arm 5 in this direction 26a upon reaching the end position is blocked by a stop formed between the catching arm 5 and a body-fixed part, for example the mounting rail 29. In the reverse pivoting of the tentacle, another corresponding stop between the tentacle 5 and a body-fixed part, such as the mounting rail 29 may be present, which blocks in the initial position of the tentacle further pivoting in this direction of rotation 26b. On the other hand, the further pivoting of the tentacle 5 could also be limited by the limitation of the further displacement of the extendable furniture part 1 upon reaching its fully retracted position.

The rotation of the tentacle 5 about the pivot axis 6 of the end position in its initial position, ie in the direction of rotation 26 b, is damped by a damping device described below, which is also integrated in the Ausziehsperrvorrichtung in the embodiment, as is preferred. When starting the displaced in the pull-out direction 44 opposite extendable furniture part to the located in its end position fishing arm 5 is thus exerted on the extendable furniture part 1, a braking force. After pivoting the tentacle 5 over the dead center of Pull-in spring 27, the retraction of the pull-out furniture part 1 takes place against the force exerted by the damping device braking force.

The Ausziehsperrvorrichtung further comprises locking rods 48, 49 which are actuated by operating parts 47 of the locking units 60.

The locking bars 48 each extend between the adjacent pull-out furniture parts 1 associated locking units 60. Between one of the end-side extendable furniture parts 1, in the illustrated embodiment, the top pull-out furniture part 1, associated locking unit 60 and a stop 59 which is arranged stationary to the furniture body 30, For example, is arranged on the mounting rail 29, an additional locking bar 49 extends. The locking bar 49 extends from the locking unit 60 in a direction away from the other locking units 60 direction.

Trained in another form or cooperating with the tentacles 5 operating parts 47 are conceivable and possible. An example of such another possible training will be given below on the basis of Fig. 21 to 24 explained in more detail.

In the fully retracted position of all extendable furniture parts 1 is a distance a between the stop 59 facing the end of the locking rod 49 and the stopper 59 before.

The longitudinal axes of all locking rods 48, 49 are parallel to each other and on a common line on which the pivot axes are 6, i. the longitudinal axes of the locking rods 48, 49 and the pivot axes 6 coincide.

Apart from the actuating part 47, which is provided for displacing the farthest from the stop 59 located locking bar 48, the actuating members 47 are each between two of the locking bars (one between the locking bars 48, 49, the other between two locking bars 48) and slidably disposed together with these locking rods 48, 49. The pull-out of one of the pull-out furniture parts 1 from the tentacle 5, which is pivoted when pulling out this extendable furniture part 1, adjusted operating member 47 shifts all seen from him closer to the stop 59 lying locking rods 48, 49 together with the intermediate operating parts 47 together.

In the embodiment, a respective actuating member 47 is formed in the form of a cam and rotatably connected to the tentacle 5 of the respective locking unit 60. The actuating member 47 can in this case be moved relative to the tentacle 5 in the direction of the pivot axis 6 by a limited distance, while still remaining in rotationally fixed connection with the tentacle 5. For example, for this purpose, the tentacle 5 as shown in the direction of the pivot axis 6 extending claws 52 which engage in recesses 53 of the actuating member 47. At the lower ends of rod members 48a, the locking rods 48 each have a cam follower member 50 rotatably held (e.g., by being supported on the mounting rail 29). At the upper ends of the rod parts 48a, the locking rods 48 each have a rotatably held cam follower part 51 (in the exemplary embodiment, this has radially projecting, extending in the axial direction webs, which engage in extending in the axial direction depressions on the inner brake member 10). Disposed on the end of the rod part 49a of the locking rod 49 facing the blocking unit 60 is a cam follower part 50 which is held in a rotationally fixed manner (for example by being supported on the mounting rail 29).

If one of the pull-out furniture parts 1 pulled out, so is the pivoting of the tentacle 5 of the associated locking unit 60 of the initial position in its end position, the actuating member 47 of this locking unit 60 is moved from a first to a second position, whereby the cooperating with this operating part 47 locking bar 48th 49, which extends from this actuating part 47 in the direction of the stop 59, is displaced by the actuating part 47. Is it the one cooperating with the locking bar 49 Operating member 47, so only the locking bar 49 is moved in the direction of the stop 59 until the existing game is at least substantially used up (the distance a, see FIG. Fig. 7 , has decreased to less than one fifth of the initial value). Was another pulled out of the pull-out furniture parts 1, 60 are all of the actuating member 47 of the associated locking unit 60 all located between the actuating member 47 and the stop 59 locking rods 48, 49 and the intermediate between the locking rods 48, 49 operating parts 47 are displaced in the direction of the stop. In Fig. 8 the displacement distance s (which is at least four fifths of the initial value of the distance a) is indicated at three points.

After removing one of the extendable furniture parts 1 thus a further displacement of the locking rods 48, 49 and the operating parts 47 lying between them is no longer possible. The tentacles 5 of the other extendable furniture parts 1 are thus blocked in their initial positions, so that a displacement of the associated driver 2 is blocked in the withdrawal direction 44.

When retracting the extended pull-out furniture part 1 of the associated tentacle 5 is moved from its final position to its initial position and this adjusts the operating member 47 of this locking unit 60 from the second position back to the first position, whereupon the distance a between the locking rod 49 and the stop 59th is restored.

The operating parts 47, which is assigned to the remote from the stop 59 end of the farthest from the stop 59 located locking bar 48 is also slidably disposed in the illustrated embodiment in the direction of the longitudinal axes of the locking rods 48, 49 so that this locking unit 60 is the same as the other is. The displaceability of this operating part 47 in the direction of the longitudinal axes of the locking rods 48, 49 can also be omitted.

In the illustrated embodiment, the extendable furniture parts 1 are arranged one above the other and when you take off one of the extendable furniture parts 1, the locking bar 48, 49 belonging to the extendable to this furniture part 1 Operating member 47 extends upward, and all optionally overlying locking rods 48, 49 and intermediate actuation parts 47 moved upward. To assist in the retraction of the parts when retracting the pull-out furniture part 1, a spring could be provided between the stop 59 and the locking bar 49. A displacement of the locking rods 48, 49 and intermediate operating parts 47 down is conceivable and possible, the stop 59 is disposed below the lowest extendable furniture part 1 associated locking unit 60 and the locking bar 49 extends between this locking unit 60 and the stopper 59. Furthermore, the extendable furniture parts 1 could also be arranged side by side, with the longitudinal axes of the locking rods 48, 49 and the pivot axes 6 would extend horizontally. In principle conceivable and possible are inclined relative to the horizontal arrangements of the locking rods 48, 49 and the pivot axes. 6

Depending on the dimensions of the extendable furniture parts 1 in the direction of the longitudinal axes of the locking rods 48, 49, locking rods 48, 49 of different lengths can be used (the lengths of the individual locking rods 48 may also differ from each other, as shown in the figures).

In the FIGS. 17 and 18 the positions of a locking unit 60 are compared when the corresponding pull-out furniture part 1 is retracted, wherein in Fig. 17 also the pull-out furniture parts are retracted, the locking units are assigned, which are further removed from the stop 59, while in Fig. 18 one of these pull-out furniture parts is pulled out. In Fig. 19 the state is shown in the extended position of the associated pull-out furniture part 1.

If desired, a central locking can be realized (not shown in the figures). For this purpose, in the fully retracted position of all extendable furniture parts, a latch member can be retracted into the intermediate space between the locking rod 49 and the stop 59, which is a Displacement of the locking rods 48, 49 and the intermediate operating parts 47 in the direction of the stop 59 blocked.

The tentacle 5 is pivotally supported by a stationary bearing unit about the axis of rotation 6, wherein the tentacle 5 is held immovably in the direction of the pivot axis 6 of the tentacle 5. The stationary bearing unit is formed in the embodiment of the housing part 28 and an inner brake member 10, on which the housing part 28 is placed. The stationary bearing unit is rotatably connected in the embodiment with the mounting rail 29, which in turn is attached to the furniture body 30. The attachment to the mounting rail 29 is preferably carried out by latching projections of the housing part 28 and the inner brake member 10, which engage in recesses in the mounting rail 29. An elimination of the mounting rail 29 and an attachment directly to the furniture body 30 is conceivable and possible.

The stationary bearing units support the locking bars in their axial directions. For this they have a completely penetrating, in the direction of the pivot axis 6 extending cavity 46. Of these cavities portions of the locking rods 48 are added. It also guides for the axial displacements of the locking rods 48 are formed.

For pivotable mounting of the catching arm 5, this is rotatably mounted in the embodiment on the cavity 46 surrounding surfaces of the stationary bearing unit.

The cam follower part 50 has an axial extension 50a with latching tongues 50b. The cam follower 51 has an axial extension 51a with latching tongues 51b. The cam follower part 51 can be inserted into the cavity 46 with the extension 51a, and the cam follower part 50 can be inserted with the extension 50a through a central opening of the actuation part 47 into a central opening of the cam follower part 51. By the locking tongues 50b, 51b, the parts for Assembling easier to hold together before assembly of the device, which remain after installation, the required range of motion.

In the exemplary embodiment shown, the damping device comprises a first, mechanically acting brake device with two parts rotated relative to one another about the pivot axis 6 (= first rotational damper) and a second braking device coupled thereto, the braking force of which is rotated in a gap between two parts rotated relative to each other about the pivot axis 6 arranged viscous damping medium is caused (= second rotary damper). Due to the coupling of the brake devices, a mutual contact pressure of friction surfaces of the first brake device takes place as a function of the braking force exerted by the second brake device. It is achieved by an overall speed-dependent damping effect, wherein the braking force of the damping device increases with increasing speed.

The tentacle 5 is connected to a preformed, but flexible by its elasticity Umschlingungsteil 31, so that the Umschlingungsteil 31 is also rotated about the pivot axis 6 upon rotation of the tentacle 5 about the pivot axis 6 in the direction of rotation 26b. The wrap member 31 is formed in the embodiment of a band and extends around a majority of the circumference of the inner brake member 10 around this. The inner (= the axis 6 facing) surface of the Umschlingungsteils 31 forms a driven friction surface 14, which cooperates to generate a braking force with the outer (= 6 away from the axis) surface of the inner brake member 10 which forms a fixed friction surface 15 (im Embodiment, this is the lower portion of the wall 40). The driven friction surface 14 and the retained friction surface 15 form the friction pairing of the first, mechanically acting brake device, which comprises the loop part 31 and the inner brake part 10.

The connection of the catching arm 5 with the looping part 31 via an overload spring 32, which is formed integrally with the wrap member 31 in the embodiment shown and of a spring elasticity having a bow or loop-shaped portion of both the wrap member 31 and the overload spring 32nd forming band is formed. In other embodiments, an overload spring may be formed in other ways or omitted.

The transition between the wrap-around part 31 and the overload spring 32 can be regarded as the front connection point 33 of the wrap-around part 31, at which the movement of the pull-out furniture part 1 to be damped is introduced into the wrap-around part 31.

At a rear connection point 34, the wrap-around part 31 is connected to the damper sleeve 18. Here, in the illustrated embodiment, an axial projection 35 of the wrap member 31 is inserted into a recess 36 of the damper sleeve 18, see. Fig. 10a , Other training of driving connection are possible.

Between the front connection point 33 and the rear connection point 34, the wrap-around part 31 extends over more than 90 °, preferably over more than 180 °, more preferably over more than 250 ° with respect to the pivot axis 6 about the inner brake part 10 (in the direction of rotation 26a ). In the embodiment shown, this extension is less than 360 °. An extension of more than 360 ° is possible, i. the wrap-around part then has more than one complete turn, wherein it runs helically around the inner brake part 10.

The rear connection point 34 of the wrap-around part 31 is connected to the catching arm 5 via an open-holding spring 25. This hold-open spring 25 is formed in this embodiment in one piece with the wrap-around part 31 and is formed by a bow-shaped or loop-shaped section of the band, which also includes the wrap-around part 31 and optionally the Overload spring 32 is formed. The hold-open spring 25 could also be formed by a separate part or omitted.

The overload spring 32 is substantially harder, preferably more than 10 times harder than the hold-open spring 25th

The damper sleeve 18 has in this embodiment, a wall 37 which engages in a slot between an inner and an outer wall 39, 40 of the inner brake member 10. Furthermore, the damper sleeve 18 has a wall 38 which engages over an upper portion of the outer wall 40 of the inner brake member 10. The inner and outer surfaces of the wall 37 of the damper sleeve 18 and the inner surface of the wall 38 of the damper sleeve 18 form driven damper surfaces 21. The outer surface of the wall 39 of the inner brake member 10, the inner surface of the wall 40 of the inner brake member 10 and the upper portion of the outer surface the wall 40 of the inner brake member 10 form retained damper surfaces (the lower portion of the wall 40 forms the retained friction surface 15). Between the driven damper surfaces 21 and the retained damper surfaces 22 is in each case an annular gap, in which a viscous damping medium 23 is arranged. Sealing rings 41, 42 define the gap between the outer surface of the wall 39 and the inner surface of the wall 37 at the upper end and the gap between the upper portion of the outer surface of the wall 40 and the inner surface of the wall 38 at its lower end, so that a sealed space is trained. As a damping medium, therefore, a flowable oil can be used. The use of a non-flowable fat is also possible.

The second brake device thus comprises the damper sleeve 18, the inner brake member 10 and the damping medium 23.

By the rotation of the catching arm 5 about the pivot axis 6, the looping part 31 is rotated about the pivot axis 6, whereby by the connection of the wrapper 31 with the damper sleeve 18, these around the Swivel axis 6 is rotated. Depending on the speed of rotation of the damper sleeve 18 about the pivot axis 6, the second braking device exerts a more or less large braking force, whereby between the front joint 33 and the rear joint 34 of the wrap 31 acts a more or less large tensile force. Depending on the size of this tensile force is a more or less strong contact pressure of the driven friction surface 14 to the fixed friction surface 15th

In the resting state of the device, the wrap-around part 31 advantageously at least in sections at a distance from the fixed friction surface 15. Preferably, the wrapping part 31 has at least substantially the entire course of its friction surface 14 due to its preforming in the resting state, i. at least over 90% of its extent in the circumferential direction, a distance from the friction surface 15 of the inner brake member 10.

By the hold-open spring 25, which acts on the rear connection point 34 of the wrap 31 relative to the front joint 33 of the wrap 31 and the catch arm 5 in the direction of rotation 26 b, the friction surface 14 of the wrap 31 is then up to a limit of the speed of the pull-out furniture part 1 or a limit of the rotational speed of the tentacle 5 from the friction surface 15 of the inner brake member 10 spaced (at least largely) and the first brake device is substantially ineffective (ie, their braking effect is anyway smaller than the braking effect of the second brake device). Only when exceeding this limit, the first braking device is effective.

At a high speed, with the extendable furniture part 1 impinges on the tentacle 5, it would come without the overload spring 32 to a suddenly occurring high braking force of the device, which undesirable high loads and an undesirably strong braking of the pull-out furniture part 1 would be the result. By the overload spring 32, the top of the Braking force cushioned by the tentacle arm 5 can rotate relative to the loop member 31 under deformation of the overload spring 32.

Since the speed of retraction against the braking force exerted by the braking device, possibly after damping the first faster speed of the pull-out furniture part 1 when starting against the tentacle, is relatively low from the intake spring 27 is essentially overcome only the relatively low braking force of the second brake device , The force of the pull-in spring 27 can thus be designed relatively low, which facilitates the extraction of the pull-out furniture part 1.

When turning back the catching arm 5 in the direction of rotation 26a, the damper sleeve 18 is rotated by the catching arm 5 via the hold-open spring 25, so that the force to be overcome in this case is to be exerted. This force is comparatively low, since the first brake device is not effective in this direction of rotation. If the application of such a force is not desired, however, a freewheel, which is closed in the direction of rotation 26b, may be provided between a part connected to the loop part 31, optionally via the hold-open spring 25 and / or the overload spring 32, and the catch arm 5 opens in the opposite direction of rotation 26a. Such freewheel are known, also in connection with dampers.

In a modified embodiment in relation to the illustrated embodiment, the catching arm 5 could also be mounted pivotably on the damper sleeve 18, namely about a pivot axis 6 parallel to the axis of rotation. The connection of the wrap-around part 31 or the overload spring 32 connected to the wrap-around part 31 could then take place on the catching arm 5 radially outside this axis of rotation. By a return spring of the tentacle 5 could be acted upon in an initial position with respect to its axis of rotation relative to the damper sleeve 18. When damping the movement of the pull-out furniture part 1, when the tentacle 5 is pivoted more or less against the force of the spring acting on it about the axis of rotation, since the rotation of the axis of rotation around the Swivel axis 6 is braked by the braking force of the second brake device, the wrap member 31 is tightened more or less and pressed against the retained friction surface 15. The pull-in spring 27 would in turn be arranged between the catching arm 5 and a body-fixed part, for example the housing part 28. The actuating member 47 would then be coupled in another way with the tentacle 5, for example via the damper sleeve 18, which, when rotated, the actuating member 47 adjusted directly or via at least one transmission member.

The wrap-around part 31 can also be formed by a wire, in particular a spring wire, or a cord instead of a band. The angle of wrap of the wire or cord is favorably between 90 ° and 530 °, preferably between 180 ° and 500 °, wherein a wrap angle between 250 ° and 330 ° is particularly preferred.

The friction pairing or at least one of the friction pairings of the first brake device expediently has a sliding friction coefficient of at least 0.2, preferably at least 0.3.

The viscosity of the viscous damping medium of the second braking device is advantageously more than 20,000 Pa s, preferably more than 50,000 Pa s, with values in the range of 100,000 to 1,000,000 Pa s are particularly preferred.

The gap width of the gap or at least one of the gaps, preferably all gaps, in which or in which the damping medium is arranged, is advantageously in the range of 0.1 mm to 0.5 mm, i. the damping medium has such a layer thickness.

The shrinkage of one of the projections 4 of the Einziehhebels 5 in the associated slide track 3 of the driver 2 when closing the pull-out furniture part 1 is in Fig. 20 shown. The curved slide track 3 (the course of both cam tracks 3 is identical) has a beginning portion 3a, at the beginning the projection 4 from outside the slide track 3 enters the slide track 3. Via the initial section 3a, the slide track 3 guides the projection 4 in a direction 57 which encloses an angle α of less than 30 ° with the pull-out direction 44. In this case, the angle α increases continuously from the beginning of the starting section 3a, at which this angle α is preferably less than 20 °, particularly preferably less than 15 °, to the end of the starting section 3a. The end of the initial section 3 a and the beginning of a continuation section 3 b of the slide track 3 are thus where this angle α reaches the value of 30 °. By way of the continuation section 3b, this angle α continues to increase until, in any case, it is more than 45 °, in the embodiment shown between 80 ° and 90 °. In Fig. 20 the Wankel α is plotted for a position of the projection 4 within the continuation section 3b, in which the angle α is slightly more than 45 °.

In the illustrated embodiment, the angle α, once it has reached its maximum value, to the end of the continuation section 3b constant. Also, a curved configuration of the link 3 to the remote from the initial section 3a end of the continuation section 3b is possible in other embodiments.

The projection 4 is guided by the slide track 3 thus at least over a subsequent to the beginning of the initial portion 3a portion of the starting portion of the slide track 3 at an angle of less than 20 °, preferably less than 15 ° to the pull-44. At least over part of the continuation section 3b, the projection 4 is preferably guided by the slide track 3 in a direction which forms an angle of more than 70 °, preferably more than 80 °, with the pull-out direction 44.

In Fig. 20 are three positions of the projection 4 when entering the slide track 3 shown by dashed lines. The first position shows just the first start of the projection 4 to the side wall 45 of the slide track 3, through which the Einziehhebel 5 is pivoted over the dead center (this side wall 45 is then in the continuation section 3b, relative to the pull-out direction 44 opposite insertion direction of the furniture part 1 rear side wall of the slide track 3). The angle α is less than 20 °, preferably less than 10 °. In the second position, the projection 4 is already in the continuation section 3b, in which case the angle α is just greater than 45 °. In the third position shown, the projection 4 is located in the continuation section 3b at the point that it occupies in the fully inserted state of the extendable furniture part, wherein the angle α is here in the embodiment between 80 ° and 90 °. The side wall 45 extends in each case in the direction in which the projection 4 is guided by the slide track 3, so that the angle which the side wall 45 includes in each case with the pull-out 44, the angle α between the direction of the guidance of the projection 4 and the pull-out direction 44 corresponds.

As a result of the described curved course of the at least one slide track 3, the force required to actuate the catching arm 5 can be influenced during the insertion of the extendable furniture part 1. In particular, results from the course of the inlet section 3a a kind of translation. The force acting on the pull-out furniture part 1 damping force is characterized, when the pull-out furniture part 1 starts at a certain speed to the tentacle 5, at the beginning of startup, when the projection 4 is in the region of the inlet section 3a of the slide track 3, reduced. Furthermore, the dead center of the pull-in spring 27 (if there is one) can thereby be overcome by a smaller force to be applied by the pull-out furniture part 1.

Out Fig. 20 goes on a self-healing section 3c of the slide track 3 forth. By this, the respective projection 4 can enter the continuation section 3b when the driver 2 should start when inserting the pull-out furniture part to the in its basic position located Einziehhebel 5. The self-healing section extends at least substantially (ie, there is a deviation of less than 15 °) parallel to the withdrawal direction 44. The self-healing sections 3c are widened towards their open ends by inlet bevels. With it Retraction of the projections 4 is made possible by the self-healing sections 3c, but the protrusions 4 can not leak from the continuation sections 3b by the self-healing sections 3c, the elasticities of the components can be exploited (so that the projection 4 as in Fig. 20 in the retracted state of the pull-out furniture part 1 offset from the self-healing section 3c is). For example, it would also be possible to drive over the steps when retracting the projections 4 through the self-healing sections 3c, wherein the side cheeks 2a, 2b having the slide tracks 3 are pushed apart from one another. Additionally or instead could be provided on the driver 2 arranged, additional resilient locking elements.

The operation of the locking rods 48, 49 could also be done in other ways. Such another possible training is in the Fig. 21 to 24 shown. Here, the actuating part 47 is formed in the form of a cam part which is pivotable about a pivot axis 54 lying at right angles to the pivot axis 6. The actuating member 47 acts in this case with the end of the at least one adjacent locking bar 48, 49 or connected to this locking bar part together to move the locking bar 48, 49 in its pivoting about the pivot axis 54 in the respective direction parallel to the pivot axis 6.

The actuating part 47 has an actuating arm 47a, which projects radially from the pivot axis 54 and is in communication with a sleeve 55 rotatable about the pivot axis 6. Upon rotation of the sleeve 55 about the pivot axis 6, the actuating member 47 is pivoted about the pivot axis 45. Between the sleeve 55 and the actuating arm 47a, a limited displacement in the direction of the pivot axis 6 is possible, for example, by a fork-shaped configuration of the end of the actuating arm 47a, in which a pin 55 mounted on the pin 56 engages.

The sleeve 55 may be connected to the tentacle 5 or another part which rotates about the pivot axis 6, when the tentacle 5 is rotated about the pivot axis 6, for example, with the damper sleeve 18. Also a one-piece design with the tentacle 5 or rotated about the pivot axis 6 part, for example, the damper sleeve 18 is possible.

In principle conceivable and possible are also relative to the horizontal inclined arrangements of the locking rods 48, 49 and the pivot axis. 6

In the figures described above, a bent leaf spring is provided as a pull-in spring. Traction springs designed in another way may also be provided. For example, torsion springs (with a desired number of turns between the two end legs) or coil springs could be used. Also, a curved leaf spring could be provided which has a greater width in a central region than in the end-side attachment regions. The bend could in this case run in a different direction than shown (for example, upwards or downwards).

The damping device could also be designed in a different way than described. Thus, instead of the described belt part, a type of belt unit could also be provided, which is formed by two or more articulated, rigid shoe parts which surround the inner brake part at least over a large part of its circumference. At one with respect to the direction of rotation about the pivot axis 6 end side jaw member (which is based on the direction of rotation 26b front) of the tentacle 5 could be attached, whereby the tentacle 5 could be pivotally mounted about the pivot axis 6. With a relative to the direction of rotation 26b back jaw member, the damper sleeve 18 may be rotatably connected. By the force exerted by the viscous damping medium on the damper sleeve braking action, the jaw member are more or less compressed and pressed against the inner brake member 10.

Also damping devices with only a single braking device, for example with a viscous damping medium in a gap between a driven and a detained part may be provided if the braking force achieved thereby is sufficient.

Although an attachment of the driver 2 at the back of the pull-out furniture part 1 will be advantageous in many applications, other, for example, lateral attachments on the pull-out furniture part 1 are possible.

The driver could also be fixed to a attached to the extendable furniture part 1 carcass-resistant mounting rail a pull-out for the pull-out furniture part.

The locking rods 48 and / or 49 could consist of several separate rod parts, which can be connected to each other or only adjacent to each other in the direction of the longitudinal axis of the locking rod are guided displaceably. The rod parts can be formed in this case in particular the same length. At different distances between the extendable furniture parts 1 then different numbers of such rod parts could then be used.

In the illustrated embodiment, all extendable furniture parts of the furniture are integrated into the pull-out device. But there are also training possible in which the furniture additionally has at least one extendable furniture part, which is independent of whether one of the other extendable furniture parts of the furniture is already pulled out, pulled out. Such a furniture part which can be pulled out independently of the other pull-out furniture parts is often the uppermost of several drawers, which can have a low storage volume and thus a low possible loading weight, e.g. a drawer for writing utensils.

In a non-extendable by the pull-out device furniture part instead of a locking unit 60, a unit can be used which has no operating part 47, but otherwise in the same or at least analogous manner as the locking unit 60 may be formed. Such a unit therefore has one stationary bearing unit having a completely penetrating cavity corresponding to the cavity 46. Through this cavity, one of the locking rods 48 or 49 may extend. Thus, it is possible to realize the function of Selbsteinzuges and damping with the same parts, but to exclude one or more extendable furniture parts of the furniture of the lock function of the pull-out device. Legend to the reference numbers: 1 extendable furniture part 36 deepening 2 takeaway 37 wall 2a side cheek 38 wall 2 B side cheek 39 wall 2c connecting leg 40 wall 3 link path 41 sealing ring 3a initial section 42 sealing ring 3b continued section 43 detent arm 3c Self-healing section 44 pull-out 4 head Start 45 Side wall 5 tentacle 46 hollow space 6 swivel axis 47 actuating member 10 inner brake part 47a actuating arm 14 driven friction surface 48 locking bar 15 held friction surface 48a rod part 18 damper sleeve 49 locking bar 21 driven damper surface 49a rod part 22 retained damper surface 50 Cam follower part 23 damping medium 50a extension 25 Open retaining spring 50b catch tongue 26a direction of rotation 51 Cam follower part 26b direction of rotation 51a extension 27 Pick spring 51b catch tongue 28 housing part 52 claw 29 mounting rail 53 recess 30 furniture body 54 swivel axis 31 belt part 55 shell 32 Overload spring 56 spigot 33 front connection point 57 direction 34 rear connection point 59 attack 35 head Start 60 blocking unit

Claims (14)

1. Pull-out blocking device for at least two pull-out furniture parts (1) which can be pulled out from a furniture body (30) in a pull-out direction (44) from a completely retracted position into a completely pulled-out position and can be retracted into the furniture body (30) in an opposite direction to the pull-out direction (44), comprising,
   for each of the pull-out furniture parts (1), a driver (2) which is displaced in the pull-out direction (44) when the pull-out furniture part (1) is pulled out and in the opposite direction (44) to the pull-out direction when the pull-out furniture part (1) is retracted,
   for each of the pull-out furniture parts (1), a blocking unit (60) which has an actuating part (47), which is adjusted as a result of the movement of the driver (2) when one of the pull-out furniture parts (1) is pulled out and retracted,
   blocking rods (48, 49) which interact with the actuating parts (47) and are mounted so as to be displaceable in a direction of longitudinal axes thereof, wherein a respective one of the actuating parts (47), which is adjusted as a result of the movement of the driver (2) associated therewith when the associated pull-out furniture part is pulled out, displaces at least one of the blocking rods (48, 49) in the direction of the longitudinal axis thereof and, as a result, the blocking rods (48, 49) are blocked against further axial displacement by a stop (59),
   wherein each of the blocking units (60) has a catch arm (5) mounted so as to be pivotable about a stationary pivot axis (6) that lies parallel to the longitudinal axes of the blocking rods (48, 49), which when the associated pull-out furniture part (1) is pulled out, is pivoted by the driver (2) associated therewith from an initial position, which the catch arm (5) assumes in the completely retracted position of the pull-out furniture part (1), into an end position, which the catch arm (5) assumes in the completely pulled-out position of the pull-out furniture part (1), and in doing so adjusts the actuating part (47) of said blocking unit (60),
   characterised in that each of the blocking units (60) has a retraction spring (27) by which the respectively associated pull-out furniture part (1) is retractable over a last portion of its path covered during retraction into the furniture body (30), wherein the catch arm (5) of each of the blocking units (60) is acted upon by the retraction spring (27) of said blocking unit (60).
2. Pull-out blocking device according to claim 1,
   characterised in that a respective one of the catch arms (5) is rotatably mounted by a stationary support unit (10, 28), wherein the blocking rods (48, 49) are displaceably mounted by the stationary support units (10, 28).
3. Pull-out blocking device according to claim 2,
   characterised in that a respective one of the stationary support units (10, 28) has a hollow space (46), which completely runs therethrough parallel to the longitudinal axes of the blocking rods (48, 49) and receives a portion of at least one of the blocking rods (48, 49).
4. Pull-out blocking device according to claim 3,
   characterised in that the catch arm (5) is rotatably mounted on at least one surface of the stationary support unit that surrounds the hollow space (46).
5. Pall-out blocking device according to one of claims 1 to 4, characterised in that a respective one of the catch arms (5) is held so as to be non-displaceable with reference to a direction parallel to the pivot axis (6) of the catch arm (5).
6. Pull-out blocking device according to one of claims 1 to 5, characterised in that when a respective one of the catch arms (5) is pivoted from the initial position thereof into the end position thereof, a dead point of the retraction spring (27) which acts upon the catch arm (5) is overcome, said retraction spring is more strongly tensioned in the end position of the catch arm (5) than in the initial position of the catch arm (5).
7. Pull-out blocking device according to one of claims 1 to 6, characterised in that the actuating part (47) of a respective one of the blocking units (60) is rotated about the pivot axis (6) of the catch arm (5) for displacing the at least one blocking rod (48, 49) when the catch arm (5) of said blocking unit (60) is pivoted between the initial position and the end position of the catch arm (5).
8. Pull-out blocking device according to one of claims 1 to 6, characterised in that the actuating part (47) of a respective one of the blocking units is rotated about a pivot axis (54) which lies at right angles to the pivot axis (6) of the catch arm (5) for displacing the at least one blocking rod (48, 49) when the catch arm (5) of said blocking unit (60) is pivoted between the initial position and the end position of the catch arm.
9. Pull-out blocking device according to claim 5 and according to one of claims 7 or 8, characterised in that the actuating part (47) of a respective one of the blocking units (60) which is coupled with the catch arm (5) is displaceable in relation to the catch arm (5) in the direction of the pivot axis (6) of the catch arm (5).
10. Pull-out blocking device according to one of claims 1 to 9, characterised in that a respective one of the blocking units (60) has a damping device for damping the retracting of the associated pull-out furniture part (1), by which the pivoting of the catch arm (5) from the end position thereof into the initial position thereof is damped.
11. Pull-out blocking device according to claim 10, characterised in that the damping device comprises at least one rotary damper or is formed by a rotary damper which has at least one part (31, 18) which is driven by the catch arm (5) when the catch arm (5) is pivoted from the end position thereof into the initial position thereof and in doing so is rotated about the stationary pivot axis (6) of the catch arm (5) in relation to a fixed part (10) for exerting a braking force.
12. Pull-out blocking device according to claim 11, characterised in that the damping device comprises a first mechanically acting braking apparatus, which has at least one friction pairing in which, for generating a braking force, a friction face (14) which is driven by the rotation of the catch arm (5) about the pivot axis (6) of the catch arm (5) is rotatable about the pivot axis (6) in relation to a friction face (15) which is fixed abutting thereagainst, and comprises a second braking apparatus which is coupled with the first braking apparatus, wherein the reciprocal pressing of the friction faces (14, 15) of the friction pairing or of at least one of the friction pairings of the first braking apparatus is effected in dependence on a braking force which is exerted by the second braking apparatus, wherein the second braking apparatus has at least one driven damper face (21) which is rotatable about the pivot axis (6), and which is driven by the rotation of the catch arm (5) about the pivot axis (6), and with at least one fixed damper face (22) encloses at least one gap in which is situated a viscous damping medium (23) which, when the at least one driven damper face (21) is rotated in relation to the at least one fixed damper face (22), produces a braking force of the second braking apparatus.
13. Pull-out blocking device according to one of claims 1 to 12, characterised in that the driver (2) or the catch arm (5) has at least one sliding path (3) and the other of said two parts (2, 5) has at least one projection (4) which moves into the at least one sliding path (3) when the pull-out furniture part (1) is pushed in, wherein the sliding path (3) has an initial portion (3a), by which the projection (4) is guided in a direction (57) which encloses an angle (α) of less than 45° with the pull-out direction (44) of the pull-out furniture part (1), and a continuing portion (3b) which follows the initial portion (3a) and by which the projection (4) is guided in a direction (57) which encloses an angle of more than 45° with the pull-out direction (44) of the pull-out furniture part (1).
14. Pull-out blocking device according to claim 13,
    characterised in that the projection (4) is guided at least by part of the initial portion (3a), which follows the start of the initial portion (3a) remote from the continuing portion (3b), in a direction (57) which encloses an angle of less than 30°, preferably of less than 20°, with the pull-out direction (44) of the pull-out furniture part (1).

Images