EP4217562B1 - Pull-out locking device for drawers - Google Patents

Description

The invention relates to a pull-out locking device for drawers comprising at least two pull-out guides, each of which has a body rail that can be attached to a common furniture body and a pull-out rail that can be attached to a respective one of the drawers and can be pulled out in a pull-out direction over a pull-out distance from a closed position to a pull-out position, a locking unit assigned to each of the pull-out guides, each of which has a base body attached to the body rail and a locking part that is movably mounted on the base body and which can be adjusted by an actuating part that is moved along with the pull-out rail at least over part of the pull-out distance when the associated pull-out rail is pulled out from the closed position, a rope-like element, at least one end of which is held so that it can be moved to a limited extent, the displaceability of one end or both ends together forming a deflection reserve of the rope-like element, which in a basic state of the pull-out locking device, in which all pull-out rails are in the closed position, has an initial value and wherein the rope-like element can be deflected by the locking part when a respective one of the locking parts is adjusted from the passive position, thereby reducing the deflection reserve in the region of the locking part.

Pull-out locking devices are used to ensure that only one of the drawers in a stacked arrangement can be Drawers can be pulled out while the other drawers are locked against being pulled out. In addition or instead, pull-out locking devices are used to ensure that the drawers can be locked against being pulled out of the furniture body when they are all closed.

A conventional pull-out locking device is, for example, based on the EP 1 500 763 A2 The pull-out guides arranged one above the other, by means of which the drawers can be pulled out of the furniture body, are each assigned a locking unit. This has a base body attached to the respective body rail, of which a locking part is slidably mounted. The locking parts interact with push rods of a push rod assembly. When one of the pull-out rails of the pull-out guides is pulled out, the locking part is moved from a passive position to an actuated position, in which the push rod interacting with this locking part is raised together with any push rods above it. This blocks the lifting of push rods below. Since the top push rod now rests against a stop, it is also no longer possible to lift push rods above it. The push rods therefore prevent a pull-out rail of another pull-out guide from being pulled out. In order to lock all drawers in the closed state, the top push rod can be blocked against lifting by a locking unit. This known pull-out locking device is combined with a self-retracting device for the pull-out rail. For this purpose, the locking part is designed as a slide, which is acted upon by a retracting spring. A tilting part is arranged on this slide, which is connected to a Pull-out rail works together with a driver arranged on the pull-out rail. In the passive position of the locking part, the driver is coupled to the tilting part. In the actuated position of the locking part, the tilting part is tilted and the driver can decouple from the tilting part, whereby retraction of the locking part is blocked by a contact surface of the tilting part resting on a retaining surface of the base body. When the drawer is pushed in, the driver couples to the tilting part and releases the connection with the retaining surface of the base body, whereupon the locking part and thus also the driver are retracted into the passive position by the retraction spring. This also retracts the drawer. A disadvantage here is that the user has to wait until the pull-out rail is fully retracted before he can pull out another of the pull-out rails. Since the self-retraction of the pull-out rail is usually dampened by a damper, this takes a relatively long time. Self-retractors in combination with pull-out locking devices have therefore not been adopted in practice.

Furthermore, pull-out locking devices of the type mentioned at the beginning are known, in which locking parts do not interact with push rods but with a rope-like element. This can be a steel cable or a textile band, for example. When a locking part is adjusted from the passive position to the actuating position, the rope-like element is deflected by the locking part in the area of the locking part. A first end of the rope-like element is immovably connected to the furniture body. The second end is held so that it can be moved to a limited extent against the force of a (weak) tension spring. After deflection by a locking part in the actuating position, this second end rests against a stop, so that the pulling out another pull-out rail is blocked. In order to lock all drawers when pushed in, the movement of the second end of the rope-like element can be blocked by means of a locking unit.

Furthermore, pull-out locking devices are known in which the locking parts interact with rotating thrust elements, for example from the WO 2011/146952 A1 A series of such sliding elements are arranged next to one another in a vertical guide rail. By rotating one of the sliding elements by adjusting the locking part from the passive to the actuated position, the sliding parts arranged above this sliding part are pushed upwards. A free space arranged above the top sliding part is thus used up, so that no further sliding parts can be rotated and the other drawers are thus locked against being pulled out.

Self-closing devices (also called self-closing mechanisms or closing mechanisms) for drawer slides, which automatically close the drawer over a final section of the insertion path when it is pushed in and thus ensure that the drawer is fully retracted, are widespread and known in various designs. For example, AT 401 334 B a self-retracting device in which a tilting slide is provided that can be moved against the force of a retracting spring. The tilting slide comprises a slide that is mounted parallel to the extension direction and can be moved against the force of the retracting spring, and a tilting part that can be tilted about a tilting axis, which serves to couple to and decouple from a driver. In the AT 393 948 B known self-retracting device is a tilting slide which is designed in one piece and can be moved along a guide track against the force of the retraction spring. The guide track has a straight section and a curved section, which causes the tilt slide to pivot around an imaginary tilt axis, so that when the drawer is pulled out and the tilt slide reaches a waiting position, the driver decouples from the tilt slide. Nowadays, self-retracting devices are usually equipped with insertion dampers to dampen the retraction movement of the pull-out furniture part. Such a dampened self-retracting device, in which the tilt slide works together with an insertion damper, is known, for example, from the EP 2 129 260 A1 known.

Furthermore, the US2011/176755 A locking device for pull-out guides of drawers is known, which is connected by a cable to other locking devices in such a way that pulling out a drawer by the cable results in locking devices of the other drawers being placed in a locked state.

The object of the invention is to provide a pull-out locking device of the type mentioned at the beginning, which enables a high level of operating comfort for the user. According to the invention, this is achieved by a pull-out locking device with the features of claim 1.

In the pull-out locking device according to the invention, if starting from the basic state of the pull-out locking device in which all pull-out rails are in the closed position, one of the pull-out rails is moved via a When the pull-out rail is pulled out over a first actuating distance following the closed position, the locking part assigned to this pull-out rail is adjusted from a passive position into a first actuating position by the actuating part which moves along with the pull-out rail, the deflection reserve being reduced by a first partial amount. When this pull-out rail is pulled out further over an intermediate distance following the first actuating distance which is at least three times, preferably at least ten times, longer than the first actuating distance, the locking part assigned to this pull-out rail remains at least substantially in the first actuating position. The fact that the locking part remains at least substantially in the first actuating position means that the deflection reserve changes by less than 10% of the first partial amount. When the pull-out rail is pulled out further over a second actuating distance following the intermediate distance, the locking part assigned to this pull-out rail is adjusted by the actuating part into a second actuating position, the deflection reserve being reduced by a second partial amount. In the state of the pull-out locking device in which one of the pull-out rails is pulled out over the first actuating section, the intermediate section and the second actuating section and another of the pull-out rails is pulled out over the first actuating section (and optionally the intermediate section) and the remaining pull-out rails are in the closed position, the deflection reserve is at least substantially used up.

Since the deflection reserve is at least essentially used up, further extension of this additional extension rail is blocked after the intermediate section (at least after a additional remaining distance explained below). The extension of the remaining extension rails is also blocked (at least after a remaining distance, which is explained in more detail below).

The design according to the invention makes it possible that, starting from the state in which a first of the pull-out rails is in the open position and the other pull-out rails are in the closed position, when the first pull-out rail is pushed in, a second pull-out rail can be pulled out as soon as the first pull-out rail has passed the second actuating section in the direction of the intermediate section. The second pull-out rail can be pulled out to the open position while the first pull-out rail is still in the intermediate section or in the area of the first actuating section.

This means, for example, that if a user pushes one of the drawers in so forcefully that it opens again slightly (up to the area of the first actuation distance or the intermediate distance), the pulling out of another drawer is not blocked. This is an advantage, for example, in toolbox drawers where it is important to be able to quickly open and remove tools from different drawers.

In particular, the invention enables an advantageous combination of a pull-out locking device with a self-retracting device. For this purpose, it is advantageously provided that the actuating parts of the base bodies of the locking units are each movable between a basic position and a Waiting position are movably mounted and interact with a driver device of the respective associated pull-out rail. In the closed position of the associated pull-out rail, each of the actuating parts assumes the basic position in which the associated driver device is coupled to the actuating part. When the associated pull-out rail is pulled out over the first actuating section, the intermediate section and the second actuating section, a respective actuating part is adjusted against the force of a retraction spring into the waiting position. In the waiting position, the driver device decouples from the actuating part, whereby the actuating part is held in the driver device against the force of the retraction spring when the pull-out rail is pulled out further. The holding of the actuating part in the waiting position against retraction into the basic position by the retraction spring can preferably be carried out by placing a contact surface of the actuating part or a part connected to it (which is immovable relative to the actuating part with respect to the pull-out direction) on a retaining surface of the base body, as is known per se in self-retracting devices.

When the driver device couples to the actuating part when the drawer is pushed in, the contact surface is released from the retaining surface of the base body (in particular by tilting the actuating part or a tilting part connected to it), whereupon the retraction spring retracts the actuating part to the basic position. It is preferred that the adjustment of the actuating part from the waiting position to the basic position is dampened by a retraction damper.

While one of the pull-out rails is still in the intermediate section or first actuation section during retraction by the retraction spring, another of the pull-out rails can already be fully extended. The user does not have to wait for one of the pull-out rails to be fully retracted before he can extend another of the pull-out rails.

The driver device is formed in particular by a section of the pull-out rail arranged in the region of the rear end of the pull-out rail.

In one possible embodiment of the invention, a respective actuating part can be formed by a slide that can be moved in a straight line and parallel to the pull-out direction, on which a tilting part is pivotably mounted about an axis that is perpendicular to the pull-out direction, as is known per se in self-retracting devices. The actuating part and tilting part then together form a type of two-part tilting slide. In another possible embodiment, the actuating part could be mounted on the base body along curved guide tracks, so that it carries out a combined displacement and tilting when adjusted from the basic position to the waiting position. Such one-piece tilting slides are also known per se in self-retracting devices.

In order to enable a relatively thin and thus easily bendable design of the rope-like element, whereby the force required to deflect the rope-like element can be kept relatively low, it is provided in a preferred embodiment of the invention that when the deflection reserve is used up, the force required to lock the The force required for (further) pulling out a respective pull-out rail is not provided directly by the rope-like element but by the application of a locking section, which is arranged on the locking part or is actuated by the locking part, to a locking surface that moves with the pull-out rail (at least over part of the pulling distance). The locking surface is advantageously arranged on the actuating part. An arrangement on the pull-out rail is also conceivable and possible.

In particular, it is provided that in a state of the pull-out locking device in which the deflection reserve is at least substantially used up, a respective one of the pull-out rails in the closed position can be pulled out over a remaining distance which is at least the first actuation distance and less than three times the first actuation distance, wherein when pulling out over the first actuation distance, a retaining spring arranged in a force transmission path between the latch part and the base body on which the latch part is mounted is deformed due to the blocking of the adjustment of the associated locking part from the passive position to the first actuation position caused by the rope-like element. After this pull-out rail has been pulled out over the first actuation distance, a locking section arranged on the associated locking part or actuated by the locking part is in a locking position in which it blocks further pulling out of this pull-out rail by resting on a locking surface that moves with this pull-out rail at the end of the remaining distance. When one of the pull-out rails is pulled out from the basic state of the pull-out locking device, the locking section is in a release position at least at the end of the remaining distance, in which the locking section and the Locking surfaces move past each other as the pull-out rail continues to be extended.

The remaining distance can correspond to the first actuation distance.

Advantageously, it is further provided that in a state of the pull-out locking device in which the deflection reserve is at least substantially used up, wherein a first of the pull-out rails is in the open position and a second of the pull-out rails is pulled out over the first actuation distance and the intermediate distance, this second pull-out rail can still be pulled out further over an additional remaining distance which is at least the second actuation distance and less than three times the second actuation distance, wherein when the second pull-out rail is pulled out over the additional remaining distance, the retaining spring is deformed due to the blocking of the adjustment of the associated locking part from the first actuation position to the second actuation position caused by the rope-like element. after the second pull-out rail has been pulled out over the second actuation distance, an additional locking section arranged on the associated locking part or actuated by the locking part is in a locking position in which, after the second pull-out rail has been pulled out over the additional remaining distance, it blocks further pulling out of this pull-out rail by resting on the locking surface or on an additional locking surface moving with the second pull-out rail. In a state of the pull-out locking device in which, after one of the pull-out rails has been pulled out over the first actuation distance and the intermediate distance, the deflection reserve is at least the second partial amount, the additional locking section is at least at the end of the additional remaining distance. in a release position in which the additional locking section and the additional locking surface move past each other when this pull-out rail is pulled out further.

The additional remaining distance can correspond to the second actuation distance.

In an advantageous embodiment of the invention, the pull-out locking device also has a lock unit, from which the deflection reserve can be at least substantially used up, starting from the basic state of the pull-out locking device, by deflecting the rope-like element or by blocking the displaceability of at least one movably mounted end of the rope-like element. Pulling out the pull-out rails is thus blocked at least at the end of the remaining distance.

In an advantageous embodiment of the invention, the contact surface of a respective locking part, which cooperates with the rope-like element, moves in a direction which is at least substantially perpendicular (i.e. in a range of 90° +/-15°) to the pull-out direction during adjustment from the passive position to the first and second actuating position.

When this document refers to a rope-like element, this refers to any elongated, flexible element that can absorb a tensile force but not a compressive force in the longitudinal direction of the element. It can be, for example, a rope, e.g. steel rope or plastic rope, a thread, a band, e.g. textile band or plastic band, or a chain.

The locking section and/or additional locking section can be a section of the one-piece locking part. However, it is also conceivable and possible for the locking section and/or additional locking section to be designed as a separate part that is coupled to the locking part and is adjusted by the locking part when the locking part is adjusted.

In one possible embodiment of the invention, the locking part is mounted on the base body so that it can pivot about a pivot axis that is preferably parallel to the pull-out direction, and the adjustment between the passive position, the first and second actuating position takes place by pivoting about the pivot axis. In such an embodiment, it can advantageously be provided that the pivot axis can be displaced relative to the base body against the force of the retaining spring in a direction perpendicular to the pivot axis. If, in a state of the pull-out locking device in which the deflection reserve is at least essentially used up, one of the drawers is pulled out over the remaining distance or additional remaining distance, the locking part can pivot about an axis that is formed by the contact point of the locking part on the rope-like element, the pivot axis of the locking part being pivoted about this axis against the force of the retaining spring.

The blocking surface which interacts with the blocking section in the blocking position of the blocking section can advantageously be arranged on the respective associated actuating part or on a tilting part mounted thereon so as to be pivotable about a tilting axis. An arrangement on the respective associated pull-out rail or a part connected to it in a way that is immovable with respect to the pull-out direction is also possible.

One possible embodiment provides that the additional blocking surface is identical to the blocking surface and the additional blocking section is spaced apart from the blocking section in relation to the pull-out direction. In another possible embodiment, the additional blocking section could be identical to the blocking section and the additional blocking surface could be spaced apart from the blocking surface in relation to the pull-out direction.

Advantageously, the second partial amount is the same as the first partial amount. Since when one of the pull-out rails is pulled out over the intermediate distance, the associated locking part remains at least substantially in the first actuating position, the initial value of the deflection reserve is thus at least three times the first partial amount and less than three and a half times the first partial amount.

The remaining distance is preferably 2mm to 20mmm. The additional remaining distance is preferably 2mm to 20mmm.

The first actuation distance is advantageously less than a tenth of the total extension distance. The length of the first actuation distance is preferably in the range from 1 mm to 10 mm.

The second actuation distance is advantageously less than a tenth of the total extension distance. The length of the second actuation distance is preferably in the range of 1 mm to 10 mm.

In a practical embodiment of the invention, the first and second actuating distances are of equal size.

The length of the intermediate section is preferably in the range of 10 mm to 100 mm, particularly preferably in the range of 20 mm to 60 mm.

When this document refers to a deflection of the rope-like element by one of the locking parts, this means that the rope-like element is displaced in the area of the respective locking part relative to a zero position which it assumes in the basic state of the pull-out locking device. Cable guide sections are advantageously located above and below the respective locking part, so that the course of the rope-like element above the upper cable guide section and below the lower cable guide section is not changed. In the deflected state, the rope-like element then has a curvature in the area of the locking part and opposite curvatures in the areas of the cable guide sections.

When in this document we speak of "front" and "back", this refers to the direction of extension.

Fig. 1

ein Ausführungsbeispiel einer erfindungsgemäßen Ausziehsperrvorrichtung mit beispielsweise drei übereinander angeordneten Ausziehführungen in der Grundstellung der Ausziehsperrvorrichtung, wobei sich alle Ausziehschienen in der Schließstellung befinden und die Schlosseinheit entriegelt ist, in Schrägsicht;

Fig. 2

ein vergrößertes Detail von Fig. 1;

Fig. 3

eine Darstellung analog Fig. 1, wobei eine erste der Ausziehschienen (die oberste) über die erste Betätigungsstrecke ausgezogen ist;

Fig. 4

ein vergrößertes Detail von Fig. 3;

Fig. 5

eine Darstellung analog Fig. 1 in der Ausziehstellung der ersten Ausziehschiene;

Fig. 6

ein vergrößertes Detail von Fig. 5;

Fig. 7

eine Darstellung analog Fig. 1, wobei die erste der Ausziehschienen sich in der Ausziehstellung befindet und eine zweite der Ausziehschienen (die zweite von oben) über die erste Betätigungsstrecke ausgezogen ist;

Fig. 8

ein vergrößertes Detail von Fig. 7;

Fig. 9

eine Darstellung analog Fig. 1 in der Schließstellung aller Ausziehschienen, aber in der verriegelten Stellung der Schlosseinheit;

Fig. 10

ein vergrößertes Detail von Fig. 9;

Fig. 11

ein vergrößertes Detail im Bereich des hinteren Endes einer in der Schließstellung sich befindenden Ausziehschiene;

Fig. 12

ein vergrößertes Detail im Bereich des hinteren Endes einer in einer Koppelstellung sich befindenden Ausziehschiene;

Fig. 13

eine stirnseitige Ansicht einer der Ausziehführungen mit Abschnitten eines Möbelkorpus, an welchem die Korpusschiene angebracht ist, und einer Schublade, an welcher die Ausziehschiene angebracht ist;

Fig. 14

eine der Ausziehführungen im auseinandergenommenen Zustand der Schienen mit der an der Korpusschiene angebrachten Riegeleinheit sowie eines Abschnitts des seilartigen Elements;

Fig. 15

eine Explosionsdarstellung der Riegeleinheit und des Abschnitts des seilartigen Elements;

Fig. 16

eine Schrägsicht des Riegelteils auf die dem Basiskörper zugewandte Seite des Riegelteils;

Fig. 17

eine Draufsicht auf das Riegelteil, wobei die Haltefeder in ausgezogenen Linien im verformten Zustand und in gestrichelten Linien im unverformten Zustand (ohne Einwirkung einer äußeren Kraft) dargestellt ist;

Fig. 18

eine Schrägsicht einer der Riegeleinheiten auf die der Korpusschiene zugewandte Seite der Riegeleinheit mit einem Abschnitt des seilartigen Elements, in der Grundstellung des Betätigungsteils;

Fig. 19

eine Darstellung analog Fig. 18 in der Wartestellung des Betätigungsteils;

Fig. 20

eine Draufsicht auf die Riegeleinheit in der Grundstellung des Betätigungsteils;

Fig. 21

einen Schnitt entlang der Linie A-A von Fig. 20;

Fig. 22

einen Schnitt analog Fig. 21 in der Wartestellung des Betätigungsteils;

Fig. 23

eine Vorderansicht der Riegeleinheit in der Passivstellung des Riegelteils zusammen mit einem Abschnitt des seilartigen Elements;

Fig. 24

eine Ansicht analog Fig. 23 aber in der ersten Betätigungsstellung des Riegelteils;

Fig. 25

eine Ansicht analog Fig. 23 aber in der zweiten Betätigungsstellung des Riegelteils;

Fig. 26

einen Schnitt entlang der Linie B-B von Fig. 23;

Fig. 27 und 28

Schnitte analog Fig. 26 aber in der ersten und zweiten Betätigungsstellung des Riegelteils;

Fig. 29

eine Schrägsicht des Basiskörpers, in der Längsmitte auseinandergeschnitten und die Teile auseinandergezogen, und des Betätigungsteils;

Fig. 30

eine Darstellung analog Fig. 29 aus einer unterschiedlichen Blickrichtung;

Fig. 31

einen Schnitt entlang der Linie C-C von Fig. 20;

Fig. 32

eine Schrägsicht eines hinteren Teils der Riegeleinheit in der Passivstellung des Riegelteils;

Fig. 33 und 34

Darstellungen analog Fig. 31 und 32 in der ersten Betätigungsstellung des Riegelteils;

Fig. 35 und 36

Darstellungen analog Fig. 31 und 32 in der zweiten Betätigungsstellung des Riegelteils;

Fig. 37 und 38

Darstellungen analog Fig. 31 und 32 nach dem Ausziehen der zugeordneten Ausziehschiene über die Reststrecke im aufgebrauchten Zustand der Auslenkreserve;

Fig. 39

einen Schnitt entlang der Linie C-C von Fig. 20 nach dem Ausziehen der zugeordneten Ausziehschiene über die Zusatz-Reststrecke im aufgebrauchten Zustand der Auslenkreserve;

Fig. 40

eine Schrägsicht eines hinteren Teils der Riegeleinheit im Zustand entsprechend Fig. 39;

Fig. 41

einen Schnitt entlang der Linie D-D von Fig. 20 im Zustand entsprechend Fig. 39 und 40;

Fig. 42

eine Schrägsicht eines Teils der Riegeleinheit im Zustand von Fig. 39 und 40 von der gegenüberliegenden Seite wie Fig. 40 im Bereich des Zusatz-Sperrabschnitts;

Fig. 43

eine Explosionsdarstellung der Riegeleinheit gemäß einer modifizierten Ausführungsform der Erfindung;

Fig. 44

eine Schrägsicht der Riegeleinheit im Zustand der Anlage des Zusatz-Sperrabschnitts an der Zusatz-Sperrfläche (die Einziehfeder und der Einschubdämpfer der Einfachheit halber weggelassen);

Fig. 45 bis 48

stark schematisierte Darstellungen von weiteren Ausführungsbeispielen der Erfindung.

Further advantages and details of the invention are explained below with reference to the accompanying drawings, in which:

Fig.1

an embodiment of a pull-out locking device according to the invention with, for example, three pull-out guides arranged one above the other in the basic position of the pull-out locking device, with all pull-out rails in the closed position and the locking unit unlocked, in an oblique view;

Fig.2

an enlarged detail of Fig.1 ;

Fig.3

a representation analogous Fig.1 , wherein a first of the pull-out rails (the uppermost one) is extended over the first actuating distance;

Fig.4

an enlarged detail of Fig.3 ;

Fig.5

a representation analogous Fig.1 in the pull-out position of the first pull-out rail;

Fig.6

an enlarged detail of Fig.5 ;

Fig.7

a representation analogous Fig.1 , wherein the first of the pull-out rails is in the pull-out position and a second of the pull-out rails (the second from the top) is extended over the first actuating distance;

Fig.8

an enlarged detail of Fig.7 ;

Fig.9

a representation analogous Fig.1 in the closed position of all pull-out rails, but in the locked position of the lock unit;

Fig.10

an enlarged detail of Fig.9 ;

Fig. 11

an enlarged detail in the area of the rear end of a pull-out rail in the closed position;

Fig. 12

an enlarged detail in the area of the rear end of a pull-out rail in a coupling position;

Fig. 13

a front view of one of the pull-out guides with sections of a furniture carcass to which the carcass rail is attached and a drawer to which the pull-out rail is attached;

Fig. 14

one of the pull-out guides in the disassembled state of the rails with the locking unit attached to the body rail and a section of the rope-like element;

Fig. 15

an exploded view of the locking unit and the section of the rope-like element;

Fig. 16

an oblique view of the locking part on the side of the locking part facing the base body;

Fig. 17

a plan view of the locking part, with the retaining spring shown in solid lines in the deformed state and in dashed lines in the undeformed state (without the action of an external force);

Fig. 18

an oblique view of one of the locking units on the side of the locking unit facing the body rail with a section of the rope-like element, in the basic position of the operating part;

Fig. 19

a representation analogous Fig. 18 in the waiting position of the operating part;

Fig. 20

a top view of the locking unit in the basic position of the operating part;

Fig. 21

a section along the line AA of Fig. 20 ;

Fig. 22

a cut analogous Fig. 21 in the waiting position of the operating part;

Fig. 23

a front view of the locking unit in the passive position of the locking part together with a section of the rope-like element;

Fig. 24

a view analogous Fig. 23 but in the first operating position of the locking part;

Fig. 25

a view analogous Fig. 23 but in the second operating position of the locking part;

Fig. 26

a section along the line BB of Fig. 23 ;

Figs. 27 and 28

Cuts analogue Fig. 26 but in the first and second operating position of the locking part;

Fig. 29

an oblique view of the base body, cut lengthwise and the parts pulled apart, and the operating part;

Fig. 30

a representation analogous Fig. 29 from a different perspective;

Fig. 31

a section along the line CC of Fig. 20 ;

Fig. 32

an oblique view of a rear part of the locking unit in the passive position of the locking part;

Figs. 33 and 34

Analog representations Fig. 31 and 32 in the first actuating position of the locking part;

Figs. 35 and 36

Analog representations Fig. 31 and 32 in the second operating position of the locking part;

Figs. 37 and 38

Analog representations Fig. 31 and 32 after the associated extension rail has been pulled out over the remaining distance when the deflection reserve has been used up;

Fig. 39

a section along the line CC of Fig. 20 after the associated extension rail has been pulled out over the additional remaining distance when the deflection reserve has been used up;

Fig. 40

an oblique view of a rear part of the locking unit in the state according to Fig. 39 ;

Fig. 41

a section along the line DD of Fig. 20 in condition accordingly Figs. 39 and 40 ;

Fig. 42

an oblique view of a part of the locking unit in the state of Figs. 39 and 40 from the opposite side like Fig. 40 in the area of the additional closure section;

Fig. 43

an exploded view of the locking unit according to a modified embodiment of the invention;

Fig. 44

an oblique view of the locking unit in the state of the additional locking section on the additional locking surface (the retraction spring and the insertion damper are omitted for simplicity);

Fig. 45 to 48

Highly schematic representations of further embodiments of the invention.

A first embodiment of the invention is shown in the Fig. 1 to 42 shown. A pull-out locking device for drawers according to the invention is shown, wherein parts of the pull-out locking device are integrated into several, in particular three or more, pull-out guides 7 arranged one above the other.

In the embodiment shown, the pull-out guides each comprise a body rail 1, a middle rail 2 and a pull-out rail 3, see in particular Fig. 14 The pull-out guides are designed here as differential pull-out guides, in which the middle rail 2 travels half the distance of the pull-out rail 3 when pulled out and pushed in. All the rollers can be arranged on the middle rail 2 as shown. The pull-out guides can be designed in a conventional manner and the arrangement of the rollers and their function do not need to be explained in more detail here.

A pull-out locking device according to the invention can also be integrated into other types of pull-out guides, for example also in pull-out guides which have only one body rail and one pull-out rail.

The respective pull-out rail 3 is pulled out from the fully inserted state in a pull-out direction 4, and the pull-out rail 3 is pushed in against the pull-out direction 4.

Only in Fig. 13 a section of a furniture body 5 is shown, to which the body rails 1 of the pull-out guides 7 are to be mounted. In addition, Fig. 13 a part of a drawer 6 is shown, on which the pull-out rail 3 of the Fig.9 shown pull-out guide 7. The pull-out rails 3 of the other pull-out guides 7 are mounted on drawers 6 in an analogous manner.

A locking unit 8 is mounted on each of the pull-out guides 7. For this purpose, a base body 9 of the respective locking unit 8 is fixed to the body rail 1, specifically in the area of a rear end of the body rail 1.

The locking units each have a locking part 10 that is movably mounted on the base body 9 and an actuating part 21 that interacts with the locking part. The actuating part 21 serves to adjust the locking part 10.

The actuating part 21 of a respective locking unit 8 is movably mounted by the base body 9 of this locking unit 8 between a basic position and a waiting position. In the closed position of the associated pull-out rail 3, the actuating part 21 is in the basic position, see. Fig. 11 , 18 , 20, 21 , 23 and 26 . When the pull-out rail 3 is pulled out, the actuating part 21 is initially taken along by a driver device 22 of the pull-out rail 3, starting from the closed position of the pull-out rail 3, until the actuating part 21 reaches the waiting position. The pull-out rail 3 then assumes a coupling position between the closed position and the pulled-out position. In the waiting position, the driver device 22 previously coupled to the actuating part 21 can be uncoupled from the actuating part 21. When the Pull-out rail 3, the actuating part 21 remains in the waiting position. In the Fig. 12 , 19 and 22 the actuating part 21 is in the waiting position.

In the embodiment, the actuating part 21 is guided by the base body 9 so that it can be moved parallel to the pull-out direction 4 and is moved parallel to the pull-out direction 4 when it is adjusted from the basic position to the waiting position. The actuating part 21 could therefore also be referred to as a carriage or slide. A tilting part 23 is mounted on the actuating part 21 so that it can be tilted (= pivoted) about a tilting axis 24 that is perpendicular to the pull-out direction 4. In the end region of the actuating part's displacement before the waiting position is reached, the tilting part 23 is tilted about the tilting axis 24. For this purpose, the base body 9 has guide tracks 25 into which guide pins 26 of the tilting part protruding on both sides engage. The actuating part 21 together with the tilting part 23 could therefore also be referred to as a tilting slide.

The actuating part 21 is urged towards the home position by a retracting spring 27. The retracting spring 27 acts on an engagement section 9i of the base body 9 and on an engagement section 21d of the actuating part 21. Instead of directly on the actuating part 21, the retracting spring 27 could also act on a part connected to it, for example on the tilting part 23.

A slide-in damper 28 acts to prevent the actuating part 21 from being moved from the waiting position towards the basic position. This is connected on the one hand to the base body 9 and on the other hand to the actuating part 21 (possibly via a part connected to the latter).

The retraction spring 27 and the insertion damper 28 are made of Fig. 21, 22 , 29, 30 and 43 visible. In the other figures they are omitted for the sake of clarity, if they are visible at all.

The driver device 22, which interacts with the actuating part 21 via the tilting part 23 and is formed in the area of the rear end of the respective pull-out rail 3, has in the exemplary embodiment a slot 3d which is arranged in a web 3a of the pull-out rail 3, which connects a vertical web 3b of the pull-out rail 3 with a horizontal web 3c of the pull-out rail. This is particularly evident from the Fig. 11 and 12 The horizontal web 3c forms a track for rollers of the middle rail. The web 3a connecting the vertical web 3b with the horizontal web 3c is designed to be slanted in the area in front of the slot 3d. In the area behind the slot 3d, this web 3a has a raised web section. The front edge of the slot 3d is therefore lower (closer to the tilt axis 24 of the tilting part 23) than the rear edge.

In the basic position of the actuating part 21, a projection 23a of the tilting part 23 projects into the slot 3d, see in particular Fig. 11 . When the pull-out rail 3 is pulled out from the closed position, the driver device 22 initially takes the tilting part 23 and thus the actuating part 21 in the pull-out direction 4. When the tilting part 23 is taken along, it is pivoted just before the actuating part 21 reaches the waiting position so that the projection 23a of the tilting part 23 can move out of the slot 3d. This moving out takes place in a coupling position of the pull-out rail, see in particular Fig. 12 .

In the waiting position of the actuating part 21, a retraction of the actuating part 21 in the direction of the basic position caused by the retraction spring 27 is blocked. For this purpose, the tilting part 23 is tilted beyond a dead center by the interaction of the guide pins 26 with the slide tracks 25 of the base body 9. The side walls of the slide tracks 25 thus form retaining surfaces of the base body 9 for contact surfaces of the guide pins 26, whereby the retraction of the actuating part 21 by the retraction spring 27 is blocked.

When the pull-out rail 3 is pushed in from the pull-out position, the driver device 22 is coupled to the actuating part 21 in the coupling position of the pull-out rail 3. For this purpose, a contact surface 23b of the tilting part 23 runs against the front edge of the slot 3d, whereby the tilting part 23 pivots and the projection 23a enters the slot 3d. The blocking of the actuating part 21 against retraction by the retraction spring 27 is also thereby removed, so that the pull-out rail 3 is retracted by the retraction spring 27 from the coupling position into the closed position over a retraction distance.

The retraction of the pull-out rail 3 is dampened by the insertion damper 28.

The actuating part 21 of a respective locking unit 8 has an actuating cam 21a, via which it interacts with the locking part 10 of this locking unit 8

The locking part 10 of a respective locking unit 9 is in the embodiment shown by a parallel to the pull-out direction 4 lying pivot axis 11 and the pivot axis 11 itself is movable in the embodiment, namely displaceable in a direction perpendicular to the pull-out direction 4. The pivot axis 11 could therefore also be referred to as a pivot-sliding axis.

The pivot axis 11 of the locking part 10 is formed in the embodiment by the axle pin 10a of the locking part 10 (see e.g. Fig. 15 and 31 ), which are inserted into the axle recesses 9c of the base body 9 (cf. e.g. Fig. 15 ) engage. The axle recesses 9c are designed in the form of elongated holes. The locking part 10 has spring-elastically bendable arms which form a retaining spring 10b. On the spring-elastic arms 10b, as shown (see e.g. Fig. 15 ) curved projections 10c can be arranged, with which the arms 10b rest against contact sections 9g of the base body 9. Without the action of an external force, the retaining spring 10b formed by the arms holds the axle pins 10a in contact with the ends of the axle recesses 9c facing the actuating part 21. The axle pins 10a can be displaced against the force of the retaining spring 10b in the direction away from the actuating part 21.

As can be seen in particular from the Fig. 16 and 26-28 As can be seen, the locking part 10 has, for interaction with the associated actuating part 21, a first inclined surface 10d extending at a first angle obliquely to the pull-out direction 3, an adjoining intermediate surface 10e and an adjoining second inclined surface 10f extending at a second angle obliquely to the pull-out direction 4. The intermediate surface 10e extends parallel to the pull-out direction 4. The first angle and the second angle are advantageously in the range between 25° and 50°. In the example, the first and second angles are equal.

In the basic position of the associated actuating part 21 (i.e. in the closed position of the associated pull-out rail 3), the locking part 10 assumes a passive position, cf. Fig. 23 and 26 as well as Fig. 31 and 32 In the passive position of a respective locking part 10, the axle pins 10a are in contact with the ends of the axle recesses 9c facing the actuating part 21.

If one of the pull-out rails, starting from the closed position, is moved over a first actuation distance a (cf. Fig. 27 ) and the first actuating part is taken along over this first actuating distance, the actuating cam 21a moves over the first inclined surface 10d. If a pivoting of the locking part 10 about the pivot axis 11 is not blocked (by the rope-like element 12, as explained below), the locking part 10 is thereby pivoted about the pivot axis 11 starting from the passive position and takes up the first actuating position at the end of the first actuating distance. This state is in the Fig. 24 and 27 and also in the Figs. 33 and 34 .

If the pull-out rail 3 is pulled out further over an intermediate distance b and the actuating part 21 is taken along over the intermediate distance, the actuating cam 21a moves over the intermediate surface 10e. Since the intermediate surface 10e is at least substantially parallel, preferably parallel, to the pull-out direction 4, at least substantially no, preferably no, pivoting of the locking part 10 about the pivot axis 11 takes place. If the pull-out rail 3 is pulled out further over a second If the locking part 10 is pulled out over the first actuation distance c and the actuating part 21 is taken along over the second actuating distance, the actuating cam 21a moves over the second inclined surface 10f. If the pivoting of the locking part 10 about the pivot axis 11 is not blocked, the locking part 10 is thereby pivoted about the pivot axis 11 into the second actuating position. This state is in the Figs. 25 and 28 and also in the Figs. 35 and 36 shown.

In the embodiment shown, the locking units 8 have additional locking parts 29. Their design and function are explained below.

The pull-out locking device further comprises a rope-like element 12, which is designed, for example, in the form of a steel cable or plastic cable (monofilament or multifilament). The locking parts 10 of all locking units 8 interact with this rope-like element 12. In the exemplary embodiment, the rope-like element 12 is arranged next to the respective locking part 10 in a direction perpendicular to the pull-out direction 4.

The rope-like element 12 is immovably connected to the furniture body 5 at a first end, in the exemplary embodiment by means of a connecting piece 13. The body rails 1 and the first end of the rope-like element 12 are thus stationary relative to one another in the assembled state of the pull-out locking device.

The second end of the rope-like element is suspended with limited mobility. In the embodiment, the second end is attached to an end piece 14, which is attached to a suspension part 16 by means of a tension spring 15. is attached. The tension spring 15 keeps the rope-like element 12 taut. The end piece 14 can be moved towards the first end of the rope-like element until it strikes a stop part 17 mounted in a fixed position on the furniture body 1. The rope-like element 12 is guided through a slot in the stop part 17.

The extent to which the first end of the rope-like element 12 can be displaced is referred to in this document as the deflection reserve. In a modified embodiment, both ends of the rope-like element 12 could also be suspended so that they can be displaced to a limited extent. The deflection reserve would then result from the sum of the displaceabilities of the two ends.

A lock piece 18 of a lock unit 19 also interacts with the rope-like element 12. The suspension part 16 and the stop part 17 can be components of a base part 20 of the lock unit. The lock piece 18 is rotatably mounted in the base part 20.

In the exemplary embodiment, horizontal flanges of the body rail 1 of the respective pull-out guide 7 have slots for the passage of the rope-like element 12 from the rear end of the body rail 1.

In the closed position of all pull-out rails 3, the locking parts 10 of all locking units 8 are in the passive positions. In the passive positions of all locking parts 10 and in the open state of the lock unit 19, the deflection reserve has an initial value (= maximum value). This state is referred to in this document as the basic state of the pull-out locking device and is shown in the Fig. 1 and 2 shown.

In the basic state, the rope-like element 12 is not deflected by the locking parts 10, so it runs straight through the locking units 8 and/or past them, as is the case, for example, in Fig. 23 can be seen. The rope-like element 12 is also not deflected by the lock piece 18 in the release state of the pull-out locking device. In the exemplary embodiment, the rope-like element then runs in a straight line between the connecting piece 13 and the end piece 14.

If now, with reference to the Fig. 3 and 4 a first of the pull-out rails 3 (which in Fig.3 topmost) is pulled out from the closed position over the first actuation distance, the associated locking part 10 is adjusted to the first actuation position as already described. In this position, it deflects the rope-like element 12 in the area of this locking part 10 by resting on the rope-like element 12 with a contact surface 10g and taking it with it, as is shown for example in Fig. 24 and 33 is evident.

When the locking part is adjusted between the passive position and the first and second actuating position, the contact surface 10g moves in a direction perpendicular to the extension direction

Above and below the locking part 10 of a respective locking unit 8, the base body 9, on which the locking part 10 is mounted, has cable guide sections 9a, 9b, to which the cable-like element 12 in the first actuating position of the locking part 10 and in a second actuating position of the locking part (see below) is pressed by the locking part 10. The cable guide sections 9a, 9b ensure that the cable-like element 12 runs vertically above and below the cable guide sections 9a, 9b even in the actuated positions of the locking part 10. In the exemplary embodiment, the cable guide sections 9a, 9b have slots through which the cable-like element 12 runs.

Due to the deflection of the rope-like element 12 in the area of the locking part 10, the first end of the rope-like element 12 has been displaced by a certain distance in the direction of the second end. The deflection reserve has thus been reduced by a first partial amount.

By adjusting the locking part 10 from the passive position to the first actuating position, a locking section 10h of the locking part 10 is also adjusted from a locking position to a release position. In the closed position of the pull-out rail 3, the locking section 10h thus assumes the locking position in which it overlaps with a locking surface 23c arranged on the tilting part 23 in relation to the pull-out direction 4. In the locking position of the locking section 10h, this would therefore be located in the area swept over by the locking surface 23c when the actuating part 21 moves from the basic position to the waiting position, and the locking surface 23c would run into the locking section 10h just at the end of the remaining section of the pull-out rail 3 explained below.

Since the locking section 10g is in the release position, the locking surface 23c can move past the locking section 10h when the pull-out rail 3 is further pulled out.

If this first pull-out rail 3 is now pulled out further over the intermediate section following the first actuation section, the associated locking part 10 remains at least essentially in the first actuation position. At least essentially here means that the deflection reserve changes by less than 10% of the first partial amount. Deviations in the position of the intermediate surface from the alignment parallel to the pull-out direction are correspondingly small.

The length of the intermediate section is advantageously more than three times and less than 30 times the length of the first actuation section, with a value between 10 times and 20 times being preferred.

The length of the intermediate section is advantageously 50% to 90% of the length of the retraction section over which the pull-out rail 3 is retracted by the retraction spring 27.

If this first pull-out rail 3 is now pulled out further over the second actuating section adjoining the intermediate section, the locking part 10 is adjusted to the second actuating position, in which it deflects the rope-like element 12 further than in the first actuating position, cf. Fig. 25 and 35 As a result, the first end of the rope-like element 12 is displaced further in the direction of the second end and the deflection reserve is thereby reduced by a second partial amount.

When this first pull-out rail 3 is further pulled out, the actuating part 21 is uncoupled from the pull-out rail 3 in the coupling position already mentioned and the Actuating part 21 remains in the waiting position and the locking part 10 remains in the second actuating position. This coupling position of the pull-out rail 3 is located after pulling out over the second actuating distance. Advantageously, the distance of the coupling position of the pull-out rail 3 from the end of the second actuating distance is less than ten times the length of the second actuating distance. This distance is preferably in the range from 5 mm to 30 mm, particularly preferably in the range from 12 mm to 15 mm.

The state after the first pull-out rail has been fully extended to the open position is shown in the Fig. 5 and 6 shown.

If, starting from this state, a second of the pull-out rails 3 is pulled out over the first actuation distance (the second highest in Fig.7 ), the associated locking part 10 is adjusted from the passive position to the first actuating position, in which it deflects the rope-like element 12 in the area of this locking part 10. The deflection reserve is thereby reduced again by the first partial amount. The deflection reserve is thus at least essentially used up.

The fact that the deflection reserve is at least substantially used up means that a certain small amount of play may still be present. This is advantageously at least less than 50% of the first partial amount, preferably less than 25% of the first partial amount, and at least less than 50% of the second partial amount, preferably less than 25% of the second partial amount.

If now, with at least substantially used up If an attempt is made to pull out one of the drawers in the closed position using the deflection reserve, this is only possible over a certain remaining distance, which is at least as long as the first actuation distance, but preferably less than three times the first actuation distance. In this case, the rope-like element 12 blocks the pivoting of the locking part 10 about the pivot axis 11, at least after the remaining play has been used up. The (further) movement of the actuating cam 21a over the first inclined surface 10d deforms the retaining spring 10b and the axle pins 10a of the locking part 10 are displaced in the axle recesses 9c, specifically in the direction away from the actuating part 21. The locking part 10 therefore pivots with the contact point of the contact surface 10g on the rope-like element 12 as the axis, which lies parallel to the pull-out direction 4. During this pivoting, the locking section 10h of the locking part 10 remains in a position in which it overlaps with the locking surface 23c in relation to the pull-out direction 4, or this overlap even increases slightly. The locking section 10h is therefore in the locking position after the pull-out rail 3 has been pulled out over the remaining distance, and at the end of the remaining distance the locking section 10h comes into contact with the locking surface 23c, whereby further pulling out of this pull-out rail 3 is blocked. This situation is in the Figs. 37 and 38 shown.

The base body 9 has a support surface 9f, which supports the locking section 10h of the locking part 10, which is in the locking position, on the side opposite the locking surface 23c when the actuating part 21 with the locking surface 23c runs into the locking section 10h of the locking part 10. The stability of the locking of the locking section 10h is thereby increased. This also provides further tension of the rope-like element and prevents possible overstretching or breakage of the same.

If, however, starting from the basic state of the pull-out locking device, one of the pull-out rails 3 is pulled out over the first actuating distance, the locking part 10 is pivoted about the pivot axis 11 as described without the retaining spring 10b being deformed, i.e. the retaining spring is sufficiently strong so that the locking section 10h is in the release position at the end of the remaining distance, in which the locking surface 23c and the locking section 10h can move past each other.

The pull-out reserve of the rope-like element 12 of the pull-out locking device can also be used up at least substantially in the closed position of all pull-out rails by actuating the lock piece 18 of the lock unit 19. By turning the lock piece 18, an eccentric section 18a of the lock piece 18 comes into contact with the rope-like element 12 and deflects it, see in particular Fig.10 The end piece 14 is thereby pulled into contact with the stop part 17 (apart from any remaining play).

This blocks the extension of any of the extension rails 3 in the closed position at the end of the remaining distance, in exactly the same way as previously described.

Below the lock piece 18, the lock unit 19 has a cable guide section 19a for the cable-like element 12, which has a slot through which the cable-like element 12 runs, so that the cable-like element 12 below the cable guide section 19a also runs vertically when deflected by the locking piece 18.

In a modified embodiment of the lock unit, it could be provided that a lock piece of the lock unit blocks the displaceability of the first end of the rope-like element 12. This could also at least substantially use up the deflection reserve.

The state is now considered in which the first pull-out rail 3 is in the open position and the second pull-out rail 3 has been moved over the first actuation distance and the intermediate distance (and the other pull-out rails are in the closed position and the locking unit is in the unlocked state). If an attempt is now made to pull the second pull-out rail 3 out further, this is only possible over a certain additional remaining distance, which is at least as large as the second actuation distance, but preferably less than three times the second actuation distance. In this case, the rope-like element 12 blocks further pivoting of the locking part 10 about the pivot axis 11, at least after the possibly remaining remainder of the pull-out reserve has been used up (due to existing play). The (further) movement of the actuating cam 21a over the second inclined surface 10f deforms the retaining spring 10b and the axle pins 10a of the locking part 10 are displaced in the axle recesses 9c, specifically in the direction away from the actuating part 21. The locking part 10 thus pivots with the contact point of the contact surface 10g on the rope-like element 12 as the axis, which is parallel to the pull-out direction 4.

One of the axle pins 10a of the locking part 10 is extended and this passes through a slotted hole in the additional locking part 29, see e.g. Fig. 15 and 41 . The additional locking part 29 is pivotably mounted on the base body 9. Axle pins 29a of the additional locking part 29 engage in axle recesses 9h of the base body 9.

By moving the axle pins 10a of the locking part 10, the additional locking part 29 is thus actuated by the locking part by pivoting it relative to the base body 9. As a result, an additional locking section 29b of the additional locking part 29 moves from a release position to a locking position. The locking position of the additional locking section 29b is shown in the Figs. 39-42 In this blocking position of the additional blocking section 29b, an additional blocking surface 23d arranged on the tilting part 23 runs against the additional blocking section 29b at the end of the additional remaining section and blocks further extension of the second extension rail 3. This state is shown in the Figs. 39-42 shown.

If, however, starting from the basic state of the pull-out locking device, only one of the pull-out rails 3 is pulled out over the first actuation distance and the intermediate distance and the other pull-out rails are in the closed position, the deflection reserve is at least the second partial amount. As a result, when this pull-out rail is pulled out further over the second actuation distance, the locking part 10 is pivoted about the pivot axis 11 as described without the retaining spring 10b being deformed, ie the retaining spring is sufficiently strong for this so that the additional locking section 29b is in the release position at the end of the additional remaining distance, in which the additional locking surface 23d and the additional locking section 29b can move past each other.

If, starting from the open position of a first of the pull-out rails 3 and the closed position of the other pull-out rails 3, this first pull-out rail 3 is pushed in and is retracted by the retraction spring 27 after the driver device 22 is coupled to the actuating part 21, a second of the pull-out rails 3 can be fully extended immediately after this first pull-out rail has passed the second actuating section in the direction of the closed position. A user therefore does not have to wait for the first pull-out rail to be fully retracted.

This displacement of the axle pins 10a of the locking part 10 under deformation of the retaining spring 10b therefore represents a further adjusting movement of the locking part 10, which is present in addition to the pivoting of the locking part 10 about the pivot axis 11.

In a modified design, the actuating part could also be designed as a one-piece tilting slide. This would therefore be displaceable in the pull-out direction and, at least before reaching the waiting position, simultaneously pivotable about an axis at right angles to the pull-out direction in order to uncouple from and couple to the driver device. The actuating part could be guided from the base body by a sliding guide.

In a modified design, the blocking surface and/or additional blocking surface could also be arranged on the actuating part.

In principle, the blocking area and/or additional blocking area could also be arranged on the pull-out rail 3.

A second embodiment of the invention is shown in the Figs. 43 and 44 shown. Apart from the differences described below, the design corresponds to that of the first embodiment and the description of the first embodiment and the modifications described therein can be used in an analogous manner. The difference to the first embodiment is that there is no separate additional locking part 29, but an additional locking section 10i is arranged directly on the locking part 10, specifically on one of the axle pins 10a. If, when the associated pull-out rail 3 is pulled out over the second actuating path, the pivoting of the locking part 10 from the first to the second actuating position is blocked and the axle pins 10a move in the axle recesses 9c, this additional locking section 10i moves from a release position to a blocking position. At the end of the additional remaining section, an additional blocking surface 21b arranged on the actuating part 21 strikes this additional blocking section 10i and further extension of the extension rail 3 is blocked.

If it is not desired to lock the drawers in their closed positions, the locking unit could be omitted in all embodiments.

If the rope-like element is sufficiently strong to block the (further) extension of the extension rails when the deflection reserve is exhausted, the locking section and the additional locking section as well as the elements for adjusting them, for example the introduction of mobility over the remaining distance and additional remaining distance by means of the retaining spring, could be omitted, as could the locking surface and additional locking surface interacting with them.

Further possible embodiments of the invention are described in the Fig. 45 to 48 shown in a simplified and highly schematic manner. The differences from the first embodiment of the invention described above are explained below. Apart from the differences explained, the design corresponds to that of the first embodiment and the description of the first embodiment together with the described design variants can be used in an analogous manner.

A third embodiment of the invention is shown in Fig. 45 schematically in cross section (similar Fig. 31 ). The actuating part 21 is shown here again as parallel to the pull-out direction 4 between the basic position and the waiting position from a Fig. 45 For the sake of simplicity, the slide is displaceably mounted on a base body (not shown). A tilting part, which is not shown in the figure, could be pivotably mounted on this for coupling and uncoupling a driver device. The actuating part could also be designed as a one-piece tilting slide.

To adjust the locking part 10 between the passive position, the first and the second actuating position, first and second inclined surfaces 31, 32 are used, which here are a projection 30 of the actuating part 21. In Fig. 45 , in which the passive position of the locking part in the release state of the pull-out locking device is shown, the extent of the inclined surfaces 31, 32 is shown schematically by dashed lines. However, the inclined surfaces could also be arranged on the locking part 10 in a similar way to the first embodiment. Conversely, in the first embodiment the inclined surfaces could also be arranged on the actuating part 21.

When one of the pull-out rails is pulled out, the locking part 10 of the associated locking unit is adjusted by the actuating part 21 from the passive position into the first and second actuating position, again by pivoting about the pivot axis 11. This pivot axis 11 is formed, for example, by at least one axle bolt which engages in one or a respective axle recess 9c of the base body. When the locking part 10 is pivoted into the actuating position, the rope-like element 12 is deflected accordingly.

When in Fig. 45 In the embodiment shown, the locking section 10h arranged on the locking part 10 is in the release position when the locking part 10 is in the passive position. When the locking part is adjusted from the passive position to the first and second actuating position, the release position is maintained.

On the actuating part 21 there is a locking surface 21c and an additional locking surface 21b. The additional locking surface 21b is arranged at a distance from the locking surface 21c in relation to the pull-out direction 4. In order for the locking surface 21c to Fig. 45 visible, it is schematically higher than the additional blocking area 21b.

If one of the pull-out rails 3 is pulled out over the first actuation distance in the at least essentially used-up state of the deflection reserve, then at least after the deflection reserve has been completely used up, a (further) pivoting of the locking part 10 about the pivot axis 11 is blocked and the locking part therefore pivots over the remaining distance about the contact point on the cable-like element 12, whereby the pivot axis 11 shifts in the at least one axle recess 9c designed as an elongated hole, deforming the retaining spring 33. The retaining spring 33 is shown here as a helical spring which acts between the axle bolt and the base body. As a result of the displacement of the pivot axis 11, the locking section 10h overlaps (in relation to the pull-out direction 4) with the locking surface 21c. The locking section 10h is thus in the locking position. At the end of the remaining section, the blocking section 10h comes into contact with the blocking surface 21c, which blocks further extension of the extension rail.

In an analogous manner, if one of the pull-out rails 3 is pulled out over the second actuating distance when the deflection reserve is at least essentially used up, the locking section 10h comes into the locking position. At the end of the additional remaining distance, the locking section 10h comes to rest on the additional locking surface 21b, which blocks further pulling out of the pull-out rail.

In this embodiment, the blocking section 10h simultaneously forms an additional blocking section for the interaction of the additional blocking surface.

In a modification of this embodiment, the locking part 10 could have a locking section and an additional locking section spaced therefrom in relation to the pull-out direction, which interact with a common locking surface of the actuating part 21. The locking surface could then simultaneously form the additional locking surface.

A fourth embodiment of the invention is shown in Fig. 46 shown. The actuating part 21 is operatively connected to the locking part 10 via a transmission part 34. The inclined surfaces 31, 32 which adjust the locking part between the passive position and the first and second actuating position are arranged on the transmission part 34 and interact with the locking part 10. It would also be conceivable and possible for the inclined surfaces to be arranged on the locking part 10 and to interact with the transfer part 34. The transfer part 34 is slidably mounted in a recess in the actuating part 21 and is pressed against the locking part 10 by a retaining spring 33.

In the passive position of the locking part 10, a locking section 10h of the locking part 10 is in the locking position. If, in the basic state of the pull-out locking device, the associated pull-out rail 3 is pulled out from the closed position and the actuating part 21 is initially taken along with it, the locking part 10 is adjusted by the inclined surface of the transmission part 32 over the remaining distance before the locking surface 21c of the actuating part 21 runs into the locking section 10h of the locking part 10 by deflecting the rope-like element 12 from the passive position to the first actuating position, in this embodiment pivoted about the pivot axis 11. The retaining spring 33 is again dimensioned such that it does not give way. At the end of the remaining distance, the blocking section 10h is no longer overlapping with the blocking surface 21c and the actuating part 21 can move past the locking part 10. If the illustrated pull-out rail 3 associated with the locking unit is pulled out when the deflection reserve has been used up, the rope-like element 12 blocks the locking part 10 from moving from the passive position to the first actuating position. When pulled out over the remaining distance, the transmission part 34 is pressed into the recess of the actuating part 21 against the force of the retaining spring 33 and with deformation of the retaining spring 33. The blocking section 10h thus remains in the blocking position and at the end of the remaining distance, the blocking surface 21c of the actuating part 21 moves to the blocking section 10h and further pulling out of the associated pull-out rail 3 is blocked.

If one of the pull-out rails 3 is pulled out over the second actuation distance in the at least essentially used-up state of the deflection reserve, the transmission part 34 is pressed into the recess of the actuation part 21 against the force of the retaining spring 33 and with deformation of the retaining spring 33. The additional locking section 34a arranged on the transmission part 34 thus comes into a locking position. At the end of the additional remaining distance, the additional locking section 34a comes into contact with an additional locking surface 21b arranged on the actuation part 21, whereby further pulling out of the pull-out rail 3 is blocked.

A fifth embodiment of the invention is shown in Fig. 47 This embodiment is designed similarly to the fourth embodiment. Here too, a transmission part 34 is pushed against the force of a retaining spring 33 in a recess of the actuating part 21. Likewise, the locking section 10h of the locking part 10 is in its locking position in the passive position of the locking part 10. When adjusting between the passive position and the first and second actuating position, the locking part 10 is not pivotable about a pivot axis but is mounted on the base body so that it can be moved in a straight line at a right angle to the pull-out direction 4. For example, grooves 35, 36 can be provided in the base body 9, into which guide lugs 37, 38 of the locking part 10 engage.

In the fourth and fifth embodiments, the transmission part 34 could also be mounted in a recess of the locking part so that it can move against the force of a retaining spring. The transmission part 34 could then have inclined surfaces that interact with the actuating part 21, or inclined surfaces that interact with the transmission part could be arranged on the transmission part.

A sixth embodiment of the invention is shown in Fig. 48 shown. The transmission part 34 is here mounted in a recess of the locking part 10 so as to be displaceable against the force of the retaining spring 33 and has inclined surfaces which interact with the actuating part 21.

In contrast to the previously illustrated embodiments, the locking section 39 is arranged here on a separate component, which is designed as a swivel arm 40. This swivel arm 40 is mounted on the transmission part 34 so that it can pivot about an axis 41. In the inserted state of the associated pull-out rail, the locking section 39 assumes the release position in this embodiment. The locking section remains in this position when the associated Pull-out rail is pulled out in the basic state of the pull-out locking device, wherein the locking part 10 is adjusted over the first actuating distance against the cable-like element 12, wherein the cable-like element 12 is deflected and the retaining spring 33 does not give way. If, on the other hand, the pull-out rail is pulled out over the remaining distance when the deflection reserve has been used up, the transmission part 34 is pressed into the recess in the locking part 10, deforming the retaining spring 33, and the actuating arm 42 of the locking part 10 runs against the pivot arm 40 and pivots this about the axis 41 into the locking position, in which the locking section 39 overlaps with the locking surface 21c on the actuating part 21 in relation to the pull-out direction 4. Further extraction of the pull-out rail is then blocked at the end of the remaining distance.

If one of the pull-out rails 3 is pulled out over the second actuation distance in the at least essentially used-up state of the deflection reserve, the transmission part 34 is pressed into the recess of the locking part 10 against the force of the retaining spring 33 and with deformation of the retaining spring 33. The locking section 39 arranged on the transmission part 34 thus comes into the locking position. At the end of the additional remaining distance, the locking section 39 comes to rest on an additional locking surface 21b arranged on the actuation part 21 and spaced apart from the locking surface 21c in relation to the pulling direction, whereby further pulling out of the pull-out rail 3 is blocked.

In this embodiment, the blocking section 39 thus simultaneously forms an additional blocking section that interacts with the additional blocking surface 21b. Legend to the reference numbers 1 Carcass rail 10f Contact surface 2 Center rail 10am Restricted section 3 Pull-out rail 10i Additional restricted section 3a web 11 Swivel axis 3b Vertical bar 12 rope-like element 3c Horizontal bar 13 Connector 3d slot 14 End piece 4 Pull-out direction 15 Tension spring 5 Furniture body 16 Hanging part 6 Drawer 17 Stop part 7 Pull-out guide 18 Lock piece 8th Locking unit 18a Eccentric section 9 Base body 19 Lock unit 9a Rope guide section 19a Rope guide section 9b Rope guide section 20 Base part 9c Axle recess 21 Actuating part 9d Side wall 21a Actuating cam 9e Side wall 21b Additional restricted area 9f Support surface 21c Restricted area 9g Investment section 21d Attack section 9am Axle recess 22 Driving device 9i Attack section 23 Tilting part 10 Latch part 23a head Start 10a Axle journal 23b Contact surface 10b Retaining spring 23c Restricted area 10c head Start 23d Additional restricted area 10d first inclined surface 24 Tilting axis 10e Intermediate surface 25 Slide track 10e second inclined surface 26 Guide pin 27 Retractable spring 28 Insert damper 29 Additional locking part 29a Axle journal 29b Additional restricted section 30 head Start 31 first inclined surface 32 second inclined surface 33 Retaining spring 34 Transmission part 34a Additional restricted section 35 Groove 36 Groove 37 Guide nose 38 Guide nose 39 Restricted section 40 Swivel arm 41 axis 42 Actuator arm

Claims (15)

1. Pull-out locking device for pull-out guides (7) of drawers (6),

   at least two pull-out guides (7), which each have a corpus rail (1) which can be attached to a common furniture corpus (5) and a pull-out rail (3) which can be attached to a respective one of the drawers (6) and which can be pulled out in a pull-out direction (4) over a pull-out distance from a closed position into a pull-out position,

   latch units (8) associated with a respective one of the pull-out guides (7), which each have a base body (9) attached to the body rail (1) and a latch part (10) which is movably mounted by the base body (9) and can be adjusted by an actuating part (21) which, when the associated pull-out rail (3) is pulled out, is moved along with the pull-out rail from the closed position over at least part of the pull-out distance,

   a cable-like element (12), at least one end of which is held displaceable to a limited extent, wherein the displaceability of the one end or of both ends together forms a deflection reserve of the cable-like element (12), which assumes an initial value in a basic state of the pull-out locking device, in which all pull-out rails (7) are in the closed position, and wherein the cable-like element (12) can be deflected by the latch part (10) with a reduction in the deflection reserve in the region of the latch part (10) when a respective one of the latch parts (10) is displaced from the passive position,

   characterized in that

   starting from the basic state of the pull-out locking device, when one of the pull-out rails (3) is pulled out via a first actuating section adjoining its closed position, the associated locking part (10) is displaced by the actuating part (21) from a passive position into a first actuating position and the deflection reserve is reduced by a first partial amount and, when the pull-out rail (3) is pulled out further via an intermediate section adjoining the first actuating section which is at least three times longer than the first actuating section, the associated locking part (10) remains at least substantially in the first actuating position and, when the pull-out rail (3) is further pulled out via a second actuating section adjoining the intermediate section, the associated locking part (10) is displaced by the actuating part (21) into a second actuating position and the deflection reserve is reduced by a second partial amount,

   and that in the state in which one of the pull-out rails (3) is pulled out via the first actuating section, the intermediate section and the second actuating section and another of the pull-out rails (3) is pulled out via the first actuating section and the remaining pull-out rails (3) are in the closed position, the deflection reserve is at least essentially used up.
2. Pull-out locking device according to claim 1, characterized in that the latch part (10) has a first inclined surface extending at a first angle obliquely to the pull-out direction, with which the actuating part (21) interacts over the first actuating distance, a second inclined surface extending at a second angle obliquely to the extraction direction (4), with which the actuating part (21) interacts via the second actuating path, and an intermediate surface extending between the first and second inclined surfaces, which extends at least substantially parallel to the extraction direction (4) .
3. Pull-out locking device according to claim 1 or 2, characterized in that the actuating parts (21) of the base bodies (9) are each mounted movably between a basic position and a waiting position and cooperate with a driver device (22) of the respectively associated pull-out rail (3), the respective actuating part (21) assuming the basic position in the closed position of the associated pull-out rail (3), in which the driver device (22) is coupled to the actuating part (21) and, when the associated pull-out rail (3) is pulled out, is displaced by the driver device (22) via the first actuating section, the intermediate section and the second actuating section against the force of a retraction spring (27) into the waiting position, in which the driver device (22) is moved by the actuating part (21) into the waiting position and in which the actuating part (21) is held against the force of the retraction spring when the pull-out rail (3) is pulled out further.
4. Pull-out locking device according to claim 3, characterized in that the displacement of the actuating part (21) from the waiting position to the home position is damped by an insertion damper.
5. Pull-out locking device according to one of claims 1 to 4, characterized in that

   in a state of the pull-out locking device in which the deflection reserve is at least substantially used up, a respective one of the pull-out rails (3) located in the closed position can be pulled out over a residual distance which is at least the first actuating distance and less than three times the first actuating distance, wherein during extraction over the first actuating distance, a retaining spring (10b, 33) arranged in a force transmission path between the latch part (10) and the base body (9), by which the latch part (10) is mounted, is deformed due to the blocking of the adjustment of the associated latch part (10) from the passive position into the first actuating position caused by the cable-like element (12),

   wherein, after this pull-out rail (3) has been pulled out via the first actuating path, a locking section (10h, 39) arranged on the associated latch part (10) or actuated by the latch part (10) moves in a blocking position, in which it blocks further extraction of this extraction rail (3) at the end of the remaining section by coming to rest against a blocking surface (21c, 23c) that moves with this extraction rail (3),

   and in that, when one of the pull-out rails (3) is pulled out from the basic state of the pull-out locking device, the locking section (10h, 39) is in a release position at least at the end of the remaining distance, in which the locking section (10h, 39) and the locking surface (21c, 23c) move past one another when the pull-out rail is pulled out further.
6. Pull-out locking device according to claim 5, characterized in that in the closed position of a respective pull-out rail (3), the respective associated locking section (10h) is in the locked position and, when one of the pull-out rails (3) is pulled out, moves over the remaining distance from the basic state of the pull-out locking device into the release position by moving the locking part (10) from the passive position into the first actuating position.
7. Pull-out locking device according to claim 5, characterized in that in the closed position of a respective pull-out rail (3), the respective associated locking section (10h, 39) is in the release position and, when the pull-out rail (3) is pulled out over the remaining distance, starting from the state of the pull-out locking device in which the deflection reserve is at least substantially used up and the displacement of the locking part (10) into the first position of the pull-out rail (3) is stopped, the latch part (10) or a transmission part (34) arranged between the latch part (10) and the actuating part (21) and acted upon by the retaining spring (33) is moved into the locked position by an actuating movement of the latch part (10) associated with the deformation of the retaining spring (10b, 33) .
8. Pull-out locking device according to one of claims 5 to 7, characterized in that the respective locking surface (21c, 23c) is arranged on the respective actuating part (21) or on a tilting part (23) pivotably connected thereto.
9. Pull-out locking device according to one of claims 5 to 8, characterized in that, in a state of the pull-out locking device in which the deflection reserve is at least substantially used up, a first of the pull-out rails (3) being in the open position and a second of the pull-out rails (3) being pulled out over the first actuating distance and the intermediate distance, this second pull-out rail (3) can still be pulled out over an additional residual distance, which is at least the second actuating distance and less than three times the second actuating distance, wherein the retaining spring (10b) is deformed when the second pull-out rail (3) is pulled out over the additional residual distance due to the blocking of the displacement of the associated latch part (10) from the first actuating position into the second actuating position caused by the cable-like element (12),

   wherein, after the second pull-out rail (3) has been pulled out via the second actuating section, an additional locking section (10i, 29b, 34a) arranged on the associated latch part (10) or actuated by the latch part (10) is in a locking position in which, after the second pull-out rail has been pulled out via the additional remaining section, it blocks further pull-out of this pull-out rail (3) by bearing against an additional locking surface (23d, 21b) which moves together with the second pull-out rail (3),

   and in that, in a state of the pull-out locking device in which, after one of the pull-out rails (7) has been pulled out via the first actuating section and the intermediate section, the deflection reserve is at least the second partial amount, the additional locking section (10i, 29b, 34a) is located at least at the end of the additional residual section in a release position in which the additional locking section (10i, 29b, 34a) and the additional locking surface (23d, 21b) move past one another as this pull-out rail is pulled out further.
10. Pull-out locking device according to claim 9, characterized in that the respective additional locking surface (23d, 21b) is arranged on the respective actuating part (21) or on a tilting part (23) pivotably connected thereto.
11. Pull-out locking device according to claim 9 or 10, characterized in that the additional locking section is identical to the locking section (10h, 39) and the additional locking surface (21b) is separated from the locking surface (21c) in relation to the locking section (10h, 39) or that the additional locking surface is identical to the locking surface and the additional locking section is spaced from the locking section in relation to the extraction direction.
12. Pull-out locking device according to one of claims 1 to 11, characterized in that the latch part (10) is mounted on the base body (9) so as to be pivotable about a pivot axis (11) and the adjustment between the passive position and the first and second actuating positions is effected by pivoting about the pivot axis (11) .
13. Pull-out locking device according to one of claims 6 to 12 and according to claim 11, characterized in that the pivot axis (11) is displaceable relative to the base body (9) against the force of the retaining spring (10b).
14. Pull-out locking device according to one of claims 1 to 13, characterized in that a respective base body (9) has cable guide sections (9a, 9b) for the cable-like element (12) arranged above and below the point of deflection of the cable-like element (12) by the associated latch part (10).
15. Pull-out locking device according to one of claims 1 to 14, characterized in that a lock unit (15) is present, from which, starting from the basic state of the pull-out locking device, the deflection reserve can at least essentially be used up by means of a deflection of the cable-like element (12) or by blocking of the displaceability of the at least one movable end of the cable-like element (12).

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