EP3684223B1 - Coupling device for drawer with subsequent latching - Google Patents

Description

The invention relates to a coupling device with post-locking according to the preamble of claim 1.

A generic coupling device is from the EP 2 937 018 A1 famous.

In various drawers, in particular system drawers, catches or coupling devices with which the drawers are fixed to a pull-out guide attached to the furniture body are part of one or both side walls or frames of the drawer.

In the case of wooden drawers, these coupling devices are often attached to a floor or to a panel of the drawer, which means additional work for the furniture manufacturer.

In the case of system drawers with relatively narrow side walls or frames made of metallic materials such as steel, however, underfloor runners are often used. The construction of the drawers is similar to that of the wooden drawers, i.e. the drawer with narrow side frames rests with a continuous base on the pull-out runners of the drawer and there is space for the side frame between the respective pull-out runners and the furniture body.

This installation space can be used to hold a catch or a coupling device with which the frame and thus the drawer are attached to the pull-out guide.

According to a variant embodiment for such a catch or for such a coupling device as shown in FIG Figure 12a or 12b is shown, a detent spring 103 'with a coupling device housing is fixed in place on a side frame 3' of a drawer 2 '. When the drawer is snapped on, the detent spring 103 'locks in a first detent window 9a', which has a running rail 7 'of the pull-out guide 6'.

Tests have shown that a second latching window 9b ', which has the running rail 7' of the pull-out guide 6 ', is not necessarily reached reliably when it is re-latched. The locking air between the locking spring 103 'and the locking window 9a', 9b 'leads to undesirable impact noises when the drawer 2' is closed and the front panel of the drawer comes to rest against the furniture body 1 '.

The invention aims to alleviate this problem.

The invention solves this problem with the subject matter of claim 1.

A coupling device is created for attaching and locking a drawer to a pull-out guide, the drawer having at least one base, a frame on each side and a front panel, and the pull-out guide having at least one body rail and at least one running rail.

In this case, the pull-out guide with the body rail is attached to a furniture body and a free end of the running rail is encompassed by a hook element of the coupling device, the hook element being formed on a slide of the coupling device and a retaining lug of a latching element which is movably mounted on the slide, as a result of the drawer being pushed onto the pull-out guide, engages in a latching window of the running rail, so that the running rail is locked to the drawer by the interaction of the hook element and the latching element.

The slide is finally guided displaceably relative to a base element of the coupling device, the base element being attached to the frame and the slide and the base element having complementary locking means such that the base element and the slide can be fixed in different positions relative to one another.

In this way, the functions of locking the running rail with the coupling device and thus with the drawer as well as the function of fine adjustment of a distance between the front panel and the furniture body are functionally separated from one another when the drawer is closed.

As a result, the drawer is advantageously locked or fastened to the pull-out slide with virtually no play. The complementary latching means are advantageously used to ensure that the front panel rests securely on the furniture body when the drawer is fully inserted into the furniture body, and also advantageously to compensate for tolerances.

According to claim 1, the locking means are designed to be structurally simple and reliably functional as latching means, in such a way that the base element and the slide can be latched in different latching positions relative to one another.

According to claim 1, the locking means further include a locking plate with a locking toothing and a locking spring arrangement with a tongue. The tongue can be an integral part of the locking spring arrangement - e.g., one end of a leaf spring - or a part of the locking spring arrangement that is separate from an actual spring. For example, it is alternatively conceivable to implement the locking spring arrangement as a structural unit with a rotatable pawl, which can engage with one end in the locking toothing and is acted upon with force by a spring, in particular a helical spring. As a result, the locking means are each advantageously designed to be simple and robust. Further refinements are conceivable.

There are various possibilities for implementation, including mixed forms of a non-positive and a positive locking in different positions.

In a further preferred embodiment of the invention, the base element has a cuboid basic geometry. As a result, the base element is advantageously designed to be robust and compact, so that it can safely accommodate further components and operating forces over the long term.

According to a further embodiment, it can advantageously be provided that such a force is applied by a cam, in particular as part of a spring arrangement the latching element is exercised so that the retaining lug, in particular due to the spring force, engages through the latching window.

In a further preferred embodiment of the invention, the base element has an opening with an essentially rectangular cross section, the opening having one or more undercuts. As a result, a component can be easily and thus advantageously mounted on the base element without further fastening means.

In a further preferred embodiment of the invention, the at least one spring arrangement engages in the one or more undercuts in a simple manner. The spring arrangement can be implemented in one or more pieces in various ways. A trapezoidal spring may be mentioned as an example as a possibility for practical implementation, in which such a form-fitting connection between the base element and the spring, in particular the trapezoidal spring, can exist.

In a further preferred embodiment of the invention, the base element has a recess which is designed such that the locking spring arrangement can be positively connected to the base element with its free end on the base element through the recess. As a result, the locking spring arrangement can be easily and thus advantageously mounted on the base element without further fastening means.

In a further preferred embodiment of the invention, a release button is provided, the release button being movably arranged on the base element, in particular being movably guided or rotatably mounted.

In a further preferred embodiment of the invention, a housing plate is pivotably attached to the base element, so that the recesses as well as the undercuts and the opening are closed. As a result, the cam, in particular as part of the spring arrangement, the locking spring arrangement and the release button are simply and advantageously secured against falling out of the base element.

In a further preferred embodiment of the invention, the latching element has a first tab and a second tab, the second tab being supported on a link. As a result, by moving the slide relative to the base element, the locking element is simply and thus advantageously brought out of engagement with the locking window. This results in a simple and therefore advantageous handling of an unlocking function of the coupling device.

In a further preferred embodiment of the invention, the first tab of the latching element can be pushed onto a surface of the spring arrangement, in particular in the form of a trapezoidal spring, which is arranged parallel to the free ends of the spring arrangement. As a result, the spring arrangement exerts a constantly acting force on the latching element, so that the retaining lug reaches through the latching window. This ensures an advantageously secure locking of the coupling element.

In a further preferred embodiment of the invention, the retaining lug has a bevel on its side facing the front panel. This ensures that tolerances are compensated for and that the locking of the coupling element is free of play in a simple and therefore advantageous manner.

The invention also provides a drawer which has at least a base, a frame on each of its sides and a front panel on its front, the drawer having at least one pull-out guide to which it is attached with a coupling device according to one of the claims related to this. The invention also creates a piece of furniture with a furniture body which has at least one such drawer. Further advantageous refinements of the invention can be found in the remaining subclaims.

Figur 1a:

eine räumliche Ansicht einer Kupplungsvorrichtung für eine Verrastung einer Führungsscheine für einen Schubkasten eines Kastenmöbels mit einer Schubkastenzarge in einem Zustand vor einer Verrastung;

Figur 1b:

eine räumliche Ansicht der Kupplungsvorrichtung für eine Verrastung einer Führungsscheine für einen Schubkasten eines Kastenmöbels mit einer Schubkastenzarge nach Fig. 1a in einem Zustand nach der Verrastung;

Figur 2a:

eine räumliche Ansicht der Kupplungsvorrichtung nach Fig. 1a, jedoch ohne Möbelplatten dargestellt;

Figur 2b:

eine räumliche Ansicht der Kupplungsvorrichtung nach Fig. 1b, jedoch ohne Möbelplatten dargestellt;

Figur 3:

eine Explosionszeichnung der Kupplungsvorrichtung;

Figur 4a:

eine Hälfte einer Draufsicht eines Schubkastens, der mit Hilfe einer Kupplungsvorrichtung mit einer Auszugsführung verriegelt werden soll, wobei der Schubkasten in einer Ausgangsstellung dargestellt ist;

Figur 4b:

eine Ausschnittsvergrößerung der Fig. 4a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 5a:

den Schubkasten nach Fig. 4a, wobei der Schubkasten auf die Auszugsführung bis zu einer Anlage des Bodens an einem Hakenelement, das die Kupplungsvorrichtung ausbildet, aufgeschoben wurde;

Figur 5b:

eine Ausschnittsvergrößerung der Fig. 5a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 6a:

den Schubkasten nach Fig. 4a, wobei der Schubkasten auf die Auszugsführung weiter aufgeschoben als nach Fig. 5a ist und eine Rastfeder in ein Rastfenster der Auszugsführung eingerastet ist;

Figur 6b:

eine Ausschnittsvergrößerung der Fig. 6a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 7a:

den Schubkasten nach Fig. 4a, wobei ein Blendenspalt, den eine Blende des Schubkastens mit einem Möbelkorpus nach dem Aufschieben und Verrasten des Schubkastens mit der Auszugsführung nach Fig. 6a bildet, minimiert wurde;

Figur 7b:

eine Ausschnittsvergrößerung der Fig. 7a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 8a:

den Schubkasten nach Fig. 4a, wobei der Blendenspalt, den die Blende des Schubkastens mit einem Möbelkorpus nach dem Aufschieben und Verrasten des Schubkastens mit der Auszugsführung nach Fig. 7a bzw. Fig. 7b bildet, geschlossen wurde;

Figur 8b:

eine Ausschnittsvergrößerung der Fig. 8a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 9a:

den Schubkasten nach Fig. 4a, wobei der verriegelte Schubkasten nach Fig. 8a von der Auszugsführung wieder gelöst wird;

Figur 9b:

eine Ausschnittsvergrößerung der Fig. 9a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 10a:

den Schubkasten nach Fig. 4a, wobei der Schubkasten von der Auszugsführung weiter als nach Fig. 9a gelöst ist;

Figur 10b:

eine Ausschnittsvergrößerung der Fig. 10a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 11a:

den Schubkasten nach Fig. 4a, wobei der Schubkasten von der Auszugsführung entriegelt ist;

Figur 11b:

eine Ausschnittsvergrößerung der Fig. 11a, in der neben den Korpusund Schubkastenteilen auch die Auszugsführung sowie die Kupplungsvorrichtung im Schnitt dargestellt sind;

Figur 12a:

eine Vorderansicht im Schnitt einer Ausführung einer Kupplungsvorrichtung zur Befestigung eines Schubkastens an einer Auszugsführung nach dem Stand der Technik;

Figur 12b:

eine Draufsicht der Ausführung der Kupplungsvorrichtung zur Befestigung des Schubkastens an der Auszugsführung nach dem Stand der Technik aus Fig. 12a

The invention is explained in more detail below on the basis of a preferred exemplary embodiment with reference to the accompanying drawings. It shows:

Figure 1a:

a three-dimensional view of a coupling device for latching a guide rail for a drawer of a cabinet with a drawer frame in a state before a latching;

Figure 1b:

a three-dimensional view of the coupling device for locking a guide rail for a drawer of a cabinet with a drawer frame Fig. 1a in a state after the latching;

Figure 2a:

a three-dimensional view of the coupling device according to Fig. 1a , but shown without furniture panels;

Figure 2b:

a three-dimensional view of the coupling device according to Figure 1b , but shown without furniture panels;

Figure 3:

an exploded view of the coupling device;

Figure 4a:

one half of a plan view of a drawer which is to be locked with the aid of a coupling device with a pull-out guide, the drawer being shown in an initial position;

Figure 4b:

an enlarged section of the Figure 4a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 5a:

the drawer Figure 4a , wherein the drawer has been pushed onto the pull-out guide until the bottom rests against a hook element which forms the coupling device;

Figure 5b:

an enlarged section of the Figure 5a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 6a:

the drawer Figure 4a , with the drawer pushed further onto the pull-out slide than after Figure 5a and a detent spring is engaged in a detent window of the pull-out guide;

Figure 6b:

an enlarged section of the Figure 6a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 7a:

the drawer Figure 4a , with a panel gap that a panel of the drawer with a furniture body after sliding the drawer and locking it with the pull-out guide Figure 6a forms, has been minimized;

Figure 7b:

an enlarged section of the Figure 7a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 8a:

the drawer Figure 4a , whereby the panel gap that the panel of the drawer with a furniture body after the sliding and locking of the drawer with the pull-out guide Figure 7a or. Figure 7b forms, was closed;

Figure 8b:

an enlarged section of the Figure 8a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 9a:

the drawer Figure 4a , with the locked drawer after Figure 8a is released again from the pull-out guide;

Figure 9b:

an enlarged section of the Figure 9a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 10a:

the drawer Figure 4a , with the drawer further from the pull-out slide than after Figure 9a is solved;

Figure 10b:

an enlarged section of the Figure 10a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 11a:

the drawer Figure 4a , wherein the drawer is unlocked from the pull-out slide;

Figure 11b:

an enlarged section of the Figure 11a , in which, in addition to the body and drawer parts, the pull-out guide and the coupling device are shown in section;

Figure 12a:

a front view in section of an embodiment of a coupling device for fastening a drawer to a pull-out slide according to the prior art;

Figure 12b:

a plan view of the embodiment of the coupling device for fastening the drawer to the pull-out slide according to the prior art Figure 12a

In Figure 1 a section of a wall or a furniture panel of a furniture body 1 with a drawer 2 is shown. Only one side wall of the furniture body 1 is shown here. The drawer 2 has two frames 3, of which only one frame 3 is shown here. The frames 3 are designed here as so-called "narrow" frames 3, which have a relatively small width, which can be less than 15 mm, for example. They can be made of a metallic material such as sheet steel. However, they can also be made from a different material such as wood or from a wood substitute material or a plastic material.

The drawer 2 has a base 4 which is fastened to the frames 3. The drawer 2 also has a front panel 5. The drawer 2 can also have a rear wall, which is not shown here.

The bottom 4 of the drawer 2 is here arranged at a distance from the lower end of the respective frame 3 in the direction of the upper end of the respective frame 3. The bottom 4 is supported on two pull-out guides 6, wherein in Fig. 1a only one of the two pull-out guides 6 is shown.

The pull-out guide 6 is designed here in a telescopic design, only one running rail 7 of the pull-out guide 6 being shown here. The pull-out guide 6 can also be designed according to a different structural principle. The pull-out guides 6 are each arranged in an installation space between the base 4 and the lower end of the frames 3 and each bear against the frame 3. The pull-out guides 6 are attached to the furniture carcass 1, more precisely to the side wall of the furniture carcass 1, an angled carcass rail of the respective pull-out guide 6 encompassing the lower end of the respective frame 3 (see FIG Figure 12a ).

The drawer 2 also has a coupling device 100 with which the drawer 2 can be fastened or locked to the pull-out guide 6. The coupling device 100 is inserted into a cutout 8 of the frame 3 so that the coupling device 100 fills an installation space in the frame 3 or between a wall of the frame 3 and the running rail 7 of the pull-out guide 6 and rests on the running rail 7 of the pull-out guide 6.

In Fig. 1a a state of the drawer 2 before being pushed onto the pull-out guides 6 is shown, while in FIG Figure 1b a state is shown in which the drawer 2 is fastened and locked to the pull-out guide 6 by the coupling device 100 in each case.

In Fig. 2a the arrangement is off Fig. 1a shown enlarged, the furniture body 1 being hidden or not shown. Fig. 2a shows the coupling device 100. The coupling device 100 has a compact, here essentially cuboid geometry. A hook element 101 and a retaining lug 102, which is formed by a latching element 103 at its free end, can be clearly seen. The hook element 101 accordingly has a hook. Fig. 2a also shows the running rail 7 of the pull-out guide 6. The running rail 7 here has a U-shaped cross section. A web of the running rail 7 has a latching window 9 in its edge area.

In Figure 2b the arrangement is off Figure 1b Shown somewhat enlarged, the furniture body 1 also being omitted. The edge area of the web of the running rail 7 engages in a hook mouth of the hook, so that the hook of the Hook element 101 encloses the edge region of the web of the running rail 7 and the end of the web rests on the bottom of the hook mouth of the hook for contact. The retaining lug 102 of the locking element 102 engages in the locking window 9 of the web. As a result, the drawer 2 is advantageously locked or fastened to the pull-out guide 6 with virtually no play. The creation of backlash-free locking is described in more detail below.

In Fig. 3 the coupling device 100 and its individual parts are shown clearly visible. The coupling device 100 has a base element 104. The base element 104 has a cuboid basic geometry and is used for receiving, fastening and as a guide partner for further individual parts of the coupling device 100.

The base element 104 has an opening 105 with an essentially rectangular cross section. The opening 105 also has two undercuts 106a, 106b. A spring arrangement, implemented here as a trapezoidal spring 107, engages with its two free ends in the undercuts 106a, 106b. This creates a form-fitting connection between the base element 104 and the trapezoidal spring 107. The trapezoidal spring 107 is made from a flat material as a bent part.

The base element 104 also has a recess 108 which is designed such that a locking spring arrangement 109 with a free end on the base element side can be positively connected to the base element 104 through the recess 108. When the locking spring arrangement 109 is installed in the base element 104, a tongue 110 of the locking spring arrangement 109, which works as a type of pawl when the coupling device 100 is installed, protrudes into the free space of the recess 108.

A release button 112 engages in a further recess 111 of the base element 104. In this exemplary embodiment, the release button 112 is movably guided in the recess 111. The release button 112 is used in the assembled state of the coupling device 100 to unlock the locking spring arrangement 109 when it is locked Coupling device 100. The release button 112 is actuated manually, ie moved in the direction of coupling device 100. The free end of the release button 112 on the base element side presses against the tongue 110 in such a way that the tongue 110 swings out of a locking toothing 113, which has a locking plate 114 (see also FIG Figure 9b , 10b ).

A housing plate 115 is movably, preferably pivotably, attached to the base element 104. The fastening is carried out with a connection, here with a form-fitting connection, for example a rivet connection. The attachment can also be carried out differently. The housing plate 115 is pivotably attached to the base element 104 in such a way that the recesses 108, 111 and the undercuts 106a, 106b and the opening 105 are closed so that the trapezoidal spring 107, the locking spring arrangement 109 and the release button 112 prevent falling out of the base element 104 are secured.

The housing plate 115 has a tab 116. The bracket 116 is produced, for example, by a folding process and has a threaded hole 117. Due to the tab 116, the housing plate 115 has, at least in sections, an L-shaped cross-sectional geometry. In the assembled state of the housing plate 115 on the base element 104, the tab 116 engages in a recess 118.

The base element 104 has a through hole 119 in the region of the recess 118. In the assembled state of the housing plate 115, a screw 120 extends through the through hole 119 and the threaded hole 117. The inclination of the base element 104 relative to the housing plate 115 can therefore be adjusted with the screw 120 via the threaded hole 117. In the assembled state of the coupling device 100, the housing plate 115 rests against the respective frame 3 of the drawer 2 and is fastened to it.

The coupling device 100 furthermore has a slide 121. The slide 121 has guide surfaces 122 of a sliding guide, via which it is displaceably guided on the base element 104. The base element 104 accordingly has geometrically corresponding guide surfaces 123. The guide surfaces 122, 123 or the sliding guide are / is here designed in such a way that a type of flat guide results in the assembled state of the slide 121 on the base element 104. The type of sliding guide can also be designed geometrically differently.

The slide 121 has a U-shaped cross-sectional geometry, at least in sections, so that the slide 121 is embodied in the manner of a housing. The slide 121 also has the hook element 101 at a free end. On an inside of a leg of the C-shaped cross section of the slide 121, the latching plate 114 is connected here to the slide 121 in a form-fitting manner by means of a rivet connection. The locking toothing 113 points to the inside of the U-shaped cross section of the slide 121.

Furthermore, the latching element 103 is movably, preferably pivotably mounted on the slide 121. The latching element 101 rests on the housing-like inside of the C-shaped cross section of the slide 121. The retaining lug 102 of the latching element 103 points in the same direction as the hook element 101 of the slide 121. The slide 121 is designed so that the retaining lug 102 can be pivoted out of the C-shaped cross section. For this purpose, the slide 115 has a recess 124.

The latching element 103 also has a first tab 125 and a second tab 126. The tabs 125, 126 are, for example, each produced by a folding process and are designed in such a way that the tabs 125, 126 create an - at least partially - U-shaped cross-section of the latching element 103.

In Figure 4a the drawer 2 is shown in a partial plan view. In an initial state, shown here, of a locking process of the drawer on the pull-out guides 6 (not shown here) together with the coupling device 100, the front panel 5 is spaced apart from the furniture cork cup 1 at a distance A.
In Figure 4b the drawer 2 is shown in section through the coupling device 100. The coupling device 100 is shown in the assembled state. It can be clearly seen that the coupling device 100 is inserted in the cutout of the frame 3 of the drawer 2.

The latching element 103, here in the non-latched state, which is movably, preferably pivotably, mounted in the slide 121 is also clearly recognizable. The second tab 126 of the latching element 103 is supported on a link 127. The trapezoidal spring 107, which engages with its two free ends in the undercuts 106a, 106b, is also clearly visible.

The running rail 7 of the pull-out guide 6 rests on one of the webs of the U-shaped cross section of the slide 121. The latching window 9 in the running rail 7 is also clearly recognizable. The hook element 101, which the slide 121 forms, is also clearly visible. The hook or the hook mouth of the hook element 101 is designed so that it can enclose a web of the running rail 7 on three sides. Furthermore, the locking plate 114 with the locking toothing 113 is clearly shown. The locking spring arrangement 109 is also clearly shown, which is supported with its free end facing the central body in the recess 111 of the base element 104. In this starting position of the locking process, the tongue 110 of the locking spring arrangement 109 engages in a tooth gap of the locking toothing 113, which is arranged farthest in the direction of the front panel 5. The release button 112 is therefore not actuated, but its free end facing the locking spring arrangement 109 rests against the locking spring arrangement 109.

Accordingly, the slide 121 and the base element 104 have complementary locking means -that is, the locking spring arrangement 109 or the tongue 110 and the locking plate 114 or the locking teeth 113- so that the base element 104 and the slide 121 can be locked in different locking positions relative to one another.

The latching means 109, 110, 113, 114 are advantageously used for secure contact of the front panel 5 on the furniture body 1 when the drawer 2 has been pushed completely into the furniture body 1, and also advantageously for tolerance compensation.
In Figure 5a the drawer 2 is shown in a partial plan view. In the state shown here of the locking process of the drawer 2 on the pull-out guides 6 (not shown here) by the coupling device 100, the front panel 5 is spaced from the furniture body 1 at a distance B, the distance B is smaller than the distance A in Figure 4a or. Figure 4b . This means that the drawer 2 was pushed further onto the pull-out guide 6.

Compared to Figure 4b encloses in Figure 5b the hook of the hook element 101 the front panel-side free end of the running rail 7 of the pull-out guide 6, so that the front panel-side free end comes to rest on the bottom of the hook mouth that the hook element 101 forms.

As a result, the pull-out guide 6 is encompassed by its running rail 7 on three sides by the hook element 101 of the slide 121. This advantageously results in a defined distance between the base of the hook mouth of the hook element 101 and the latching window 9 of the running rail 7.

Also in Figure 6a the drawer 2 is shown in a partial plan view. In the state shown here of the locking process of the drawer 2 on the pull-out guides 6 (not shown here) by the coupling device 100 - also referred to as post-locking - the front panel 5 is spaced from the furniture body 1 at a distance C, the distance C being smaller than the distance B in Figure 5a or. Figure 5b . This in turn means that the drawer 2 was pushed further in the direction of the furniture body 1. This is possible although the running rail 7 of the pull-out guide 6 is already in contact with the base of the hook mouth of the hook element 101, since the base element 104 (not shown here) can be displaced relative to the slide 121.

Compared to Figure 5b the locking element 103 has also moved relative to the pull-out guide 6 due to the movement of the base element 104 in the direction of the rear wall (not shown here) of the drawer 2 relative to the slide 121.

As a result, the first tab 125 of the latching element 103 was pushed onto a surface 128 of the trapezoidal spring 107, which is arranged parallel to the free ends of the trapezoidal spring 107. As a result, the latching element 103 has swiveled counterclockwise about its pivot point P, so that the retaining lug 102 of the latching element 103 now engages through the latching window 9. As a result, the pull-out guide 6 is locked to the drawer 2 via the coupling device 100. The trapezoidal spring 107 exerts a continuously acting force on the latching element 103, which ensures that the retaining lug 102 securely reaches through the latching window 9.

The retaining lug 102 has a bevel 129 on its side facing the front panel (see also FIG Fig. 3 ). Dimensional tolerances of the hook element 101 can be compensated for by the bevel, so that the bevel 129 advantageously ensures a quasi-play-free, fixed locking.

Furthermore, the locking spring arrangement 109 has also shifted relative to the slide 121 and thus relative to the locking plate 114. As a result, the tongue 110 of the locking spring arrangement 109 now engages in a tooth gap of the locking toothing 113, which is arranged in the direction of the front panel 5 behind the tooth gap that is furthest in the extension direction of the drawer 2.

In the in Figure 7a shown state of the drawer 2 on the pull-out guides 6 (not shown here) by the coupling device 100, the front panel 5 of the drawer 2 is spaced from the furniture body 1 at a distance D, the distance D is again smaller than the distance C in Figure 6a , or 6b. This in turn means that the drawer 2 was pushed further in the direction of the furniture body 1, so that a gap between the front panel 5 and the furniture body 1 was further minimized. This is possible although the running rail 7 of the pull-out guide 6 is already in contact with the bottom of the hook mouth of the hook element 101, since the base element 104 (not shown here) can be displaced relative to the slide 121.

This is in Figure 7b clearly shown. In the following, there are essentially differences or additions to it Figure 6b described. Compared to Figure 6b If the movement of the base element 104 in the direction of the rear wall (not shown here) of the drawer 2 relative to the slide 121, the locking spring arrangement 109 has also moved relative to the slide 121 and thus to the locking plate 114.

As a result, the tongue 110 of the locking spring arrangement 109 now engages in a tooth gap of the locking toothing 113, which is between the tooth gap that is furthest in Extension direction is arranged and a tooth gap which is arranged furthest in the direction of the rear wall (not shown here) is

In Figure 8a the drawer 2 is shown in a partial plan view. In the state shown here of the locking process of the drawer 2 on the pull-out guides 6 (not shown here) by the coupling device 100, the front panel 5 rests on the furniture body 1. This is possible although the running rail 7 of the pull-out guide 6 is already in contact with the base of the hook mouth of the hook element 101, since the base element 104 (not shown here) can be displaced relative to the slide 121.

This is in Figure 8b clearly shown. Compared to Figure 7b If the movement of the base element 104 in the direction of the rear wall (not shown here) of the drawer 2 relative to the slide 121, the locking spring arrangement 109 has also moved relative to the slide 121 and thus to the locking plate 114.

As a result, the tongue 110 of the locking spring arrangement 109 now engages in the tooth gap of the locking toothing 113, which is arranged furthest in the direction of the rear wall (not shown here).

Due to the locking toothing 113 with several tooth gaps, it is possible, depending on the tolerance position, that this tooth gap is not reached, although the front panel 5 has come to rest on the furniture body 1. In this respect, the locking toothing 113 is not only used advantageously for the safe contact of the front panel 5 on the furniture body 1 when the drawer 2 is completely inserted into the furniture body 1, but also advantageously for tolerance compensation.

In Figure 9a the drawer 2 is shown in a partial plan view. In the state shown here at the beginning of a process of releasing the drawer 2 from the pull-out guides 6 (not shown here) by the coupling device 100, the front panel 5 rests against the furniture body 1.

This is in Figure 9b shown. Compared to Figure 8b is in Figure 9b the release button 112 is actuated so that the tongue 110 of the locking spring assembly 109 moves away from the Locking teeth 113 has loosened. The actuation of the release button 112 is possible manually, since the geometry of the respective recess 8 of the respective frame 3 is dimensioned such that such a manual or manual actuation of the release button 112 is possible. As a result, the front panel 5 and thus the drawer 2 as a whole can be moved away from the furniture body 1 in the pull-out direction, so that a gap with a distance E can form again.

This is in Figure 10a and in Figure 10b shown. When the release button 112 is actuated, the tongue 110 of the locking spring arrangement 109 is no longer in engagement with the locking toothing 113, so that the front panel 5 and thus the drawer 2 can be moved further away from the furniture body 1 in the pull-out direction due to the relative displaceability of the slide 121 to the base element 104.

In Figure 10b a state of the release process is shown in which the first tab 125 of the latching element 103 has left the surface 128 of the trapezoidal spring 107 and the second tab 126 of the latching element 103 runs onto the gate 127. In this respect, the locking element 103 has executed a pivoting movement in the clockwise direction about its pivot point P. However, the retaining lug 102 still engages in the latching window 9.

As the drawer 2 continues to move in the pull-out direction, i.e. away from the furniture body 1-, the locking element 103 is pivoted further in the clockwise direction about its pivot point P by the gate 127. As a result, the retaining lug 102 of the latching element 103 migrates out of the latching window 9, as shown in FIG Figure 11b is clearly shown.

Thus the initial state is after Figure 4a , or 4b is reached again, so that the drawer 2 can be lifted off the pull-out guide 6.

List of reference symbols

1

Furniture body

2

Drawer

3

Frame 3 '

4th

Bottom 4 '

5

Front panel

6th

Drawer runner 6 '

7th

Running track 7 '

8th

Cutout

9

Rest window

9a '; 9b '

first or second locking window

100

Coupling device

101

Hook element

102

Retaining lug

103

Locking element

104

Base element

105

breakthrough

106a, b

Undercuts

107

Trapezoidal spring

108

Recess

109

Locking spring assembly

110

tongue

111

Recess

112

Release button

113

Locking teeth

114

Locking plate

115

Housing plate

116

Tab

117

Threaded hole

118

deepening

119

Through hole

120

screw

121

Slider

122

Guide surface

123

Guide surface

124

Recess

125

Tab

126

Tab

127

Backdrop

128

surface

129

bevel

A.

distance

B.

distance

C.

distance

D.

distance

E.

distance

P.

pivot point

Claims (15)

1. Coupling device (100) for attaching and locking a drawer (2) to a pull-out guide (6), wherein the drawer (2) has at least one base (4), a frame (3) on each of its sides and a front panel (5), and wherein the pull-out guide (6) has at least one body rail and at least one running rail (7), wherein the pull-out guide (6) with the body rail is fastened to a furniture body (1) and a free end of the running rail (7) is surrounded by a hook element (101) of the coupling device (100), wherein the hook element (101) is formed on a slider (121) of the coupling device (100) and wherein a latching lug (102) of a latching element (103), which is movably mounted on the slider (121), engages in a latching window (9) of the running rail (7) as a result of the drawer (2) being pushed onto the pull-out guide (6), so that the running rail (7) is locked to the drawer (2) by interaction of the hook element (101) and the latching element (103), and wherein further the slider (121) is displaceable relative to a base element (104) of the coupling device (100), wherein the base element (104) is fixed to the frame (3) and the slider (121) and the base element (104) have complementary fixing means such that the base element and the slider can be fixed in different positions relative to each other, characterized in that the locking means are designed as complementary latching means (109, 110 or 113, 114) in such a way that the base element (104) and the slider (121) can be locked in different positions relative to one another and wherein the latching means (109, 110 or 113, 114) comprise a latching toothing (113) and a locking spring assembly (109) with a tongue (110), wherein the tongue (110) and the latching toothing (113) can reversibly engage with each other.
2. Coupling device according to claim 1, characterized in that the locking means are designed as complementarily acting positive and/or frictional locking means in such a way that the base element (104) and the slider (121) can be locked in different positions relative to one another.
3. Coupling device (100) according to one of the preceding claims, characterized in that a force is exerted on the latching element (103) by a cam, in particular as part of the locking spring assembly, such that the latching lug (102) engages through the latching window (103).
4. Coupling device (100) according to one of the preceding claims, characterized in that the base element (104) has a breakthrough (105) and that the breakthrough has at least one or more undercuts (106a, 106b), wherein at least one projection and/or a spring assembly engages in the at least one undercut (106a, 106b).
5. Coupling device (100) according to one of the preceding claims, characterized in that the base element (104) has a recess (108) which is designed in such a way that the locking spring assembly (109) can be connected positively through the recess (108) to the base element (104) by means of its free end on the base element side.
6. Coupling device (100) according to one of the preceding claims, characterized in that it comprises a release button (112), wherein the release button (112) is movably arranged on the base element (104).
7. Coupling device (100) according to claim 6, characterized in that the end of the release button (112) on the base element side presses against the tongue (110) when the release button (112) is actuated in such a way that the tongue (110) pivots out of the latching toothing (113) which comprises one latching plate (114).
8. Coupling device (100) according to claim 4 and 5 and, preferably according to claim 6 or 7, characterized in that a housing plate (115) is pivotably attached to the base element (104) so that the recesses (108), (111) as well as the undercuts (106a, 106b) and the breakthrough (105) are closed.
9. Coupling device (100) according to claim 8, characterized in that the housing plate (115) has a lug (116), wherein the lug (116) engages in a depression (118) in the base element (104) when the housing plate (115) is mounted on the base element (104).
10. Coupling device (100) according to claim 8 or 9, characterized in that in the assembled state of the coupling device (100), the housing plate (115) rests against the respective frame (3) of the drawer (2) and is attached to it.
11. Coupling device (100) according to one of the preceding claims, characterized in that the slider (121) has guide surfaces (122) of a sliding guide, via which it is guided displaceably on the base element (104), preferably such thaton an inner side of the slider (121) one latching plate (114) is connected to the slider (121), wherein the latching toothing (113) of the latching plate (114) faces the inner side of the slider (121).
12. Coupling device (100) according to one of the preceding claims, characterized in that the latching element (103) has a first lug (125) and a second lug (126) which is supported on a link (127).
13. Coupling device (100) according to one of the claims 6 or 7, characterized in that the tongue (110) of the locking spring assembly (109) engages in a gap of the latching toothing (113) during the locking operation, wherein the release button (112) is not actuated and the release button (112) rests against the locking spring assembly (109) with its free end facing the locking spring assembly (109).
14. Drawer (2) comprising at least one base (4), a frame (3) on each of its sides and a front panel (5) on its front, characterized in that the drawer (2) comprises at least one pull-out guide (6) to which it is fixed by means of a coupling device (100) according to one of the preceding claims.
15. Piece of furniture having a furniture body (1) comprising at least one drawer (2) according to claim 14.

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