EP3335592B1 - Locking device for a locking fitting for a frame and frame with a locking fitting - Google Patents

Description

The invention relates to a locking device for a locking fitting according to the preamble of claim 1, a frame with such a locking device, a drawer.

The DE 10 2010 060 722 A1 discloses a generic prior art. The Arretierbeschlag disclosed in this document comprises a locking device having a force accumulator, which is arranged on the frame and a corresponding connection fitting on a furniture plate, in particular on a front panel, which can be approached with a catch lever on which the force accumulator acts on the front panel. Here, a manually operable release lever is provided. This frame has proven itself well in practice, but it is desirable to realize in a structurally simple way even more compact locking fittings for narrow frames.

The invention has the object to provide a locking fitting with a particularly compact design of the locking device against this background.

The invention solves this problem by the subject-matter of claims 1, 14 and 15.

• einem ein- oder mehrteiligen Grundkörper,
• an der Arretiervorrichtung sind zumindest drei bewegliche Haupt-Funktionselemente vorgesehen: ein Auslösehebel, ein Fanghebel und ein Kraftspeicher,
• wobei der Fanghebel und der Auslösehebel in parallelen Ebenen beweglich sind und dabei in einer Sicht senkrecht zu diesen Ebenen miteinander jedenfalls abschnittsweise fluchtend in Deckung liegen,
• wobei ein Ende des Kraftspeichers eine Bohrung und ein anderes Ende des Kraftspeichers ein Langloch im Grundkörper durchsetzt, in welchem das zweite Ende des Kraftspeichers verschieblich ist, und
• wobei das andere Ende des Kraftspeichers ferner bei einem Bewegen in dem Langloch den Fanghebel bei einem Entspannen des Kraftspeichers in eine Arretierstellung bewegt.

Claim 1 provides a locking device for a locking fitting for a frame, which is designed to cooperate with a connecting fitting of a panel, having the following features:

• a one- or multi-part body,
• at least three main movable functional elements are provided on the locking device: a release lever, a catch lever and a force accumulator,
• wherein the catch lever and the release lever are movable in parallel planes and are at least partially aligned with one another in a view perpendicular to these planes,
• wherein one end of the force accumulator passes through a bore and another end of the energy accumulator a slot in the base body, in which the second end of the force accumulator is displaceable, and
• wherein the other end of the force accumulator further moves when moved in the slot the catch lever at a relaxation of the energy storage in a locked position.

This detachable locking device is compact and pulls - in the installed state - the shutter selbsttätig safely approach to a frame.

The main body may consist of one or more elements, which may be mutually adjustable, and at least partially plate-shaped, may exist. Advantageously, the elements of the base body may be formed as a base plate assembly having at least one base plate. The term "base plate" is not too narrow. This includes in any case sections of just trained facilities but also one or more struts, etc. In a version with two or more base plates may be present between them a slot. This can possibly be used advantageously for the safe arrangement of one or more functional elements.

The energy accumulator may consist of one or more spring elements and possibly connecting or deflecting elements, bolts or levers.

In terms of a compact design is also advantageous if the release lever is arranged on the one outer side of the base body and the catch lever on the other outer side or between two elements of the main body in a slot. Thus, these levers can move well without hindering each other in the movement. Preferably, furthermore, the release lever is rotatably mounted on the one end of the force accumulator, which is also guided displaceably in the slot of the main body.

According to a further advantageous design, which favors the compact design of the locking device, the release lever has a control contour with a Cam section on which defines a Übertotpunktstellung in which the energy storage is stretched, the release lever by a result of an attachment of the connecting fitting to the locking device dissolves from this Übertotpunktstellung so that the energy storage can relax.

It is also conceivable that the release lever not einsein but multipart form. Then can advantageously be provided in a simple manner, the over-center position with two or more mutually articulated coupled lever arms to realize, which together form the multi-part release lever.

It may be further advantageously provided in the sense of compact design, that one end of the energy storage is mounted in a bore of the catch lever and that the other end of the energy storage penetrates a slot of the catch lever, so that the catch lever from the energy storage in a relaxation of the energy storage is moved into a locking position in which it locks an element, in particular a bolt, the connection fitting.

According to another embodiment, which is also to be regarded as an independent invention, the energy storage is designed as a spiral spring arrangement, since such a spiral spring arrangement provides particularly well the necessary spring force for actuation and particularly well, for example, in a frame can be accommodated. The following text refers to such a force storage in an interpretation as a spiral spring arrangement.

In this case, the spiral spring arrangement may comprise a U-shaped or V-shaped spiral spring having two longitudinal limbs which are connected directly or indirectly to one another or the spiral spring arrangement may have a bending spring with two longitudinal limbs which are not connected to one another. In addition, the bending spring arrangement may have at least one spring core. In this case, the bending spring sections may be placed around the at least one spring core, which serves as a spring amplifier. In addition, the at least one spring core can have a shape adapted to the shape of the bent longitudinal limb and ensure partial support of these longitudinal limbs over part of the length of these limbs, in particular in sections which expand. In addition, can advantageously on the spring core be formed laterally two parallel walls, between which a slot is formed, in which the longitudinal legs einliegen over part of its length.

This energy storage is suitable for fittings of various kinds. Preferred field of application is furniture construction. Here it is suitable as an energy store, which forms part of an actuating device or holding device. Such he is particularly suitable for furniture fittings of various kinds, such as front and rear wall connections and / or cabinet and / or shelf hanger and / or as a rack connection of a pullout guide.

It can be advantageously provided that the spiral spring arrangement comprises a V-shaped or U-shaped spiral spring with two arcuate longitudinal limbs, which are integrally or individually formed, wherein the longitudinal limbs are connected to each other in a one-piece configuration via a bend.

Then it is further advantageous in terms of compact design and good function, when the two arcuate longitudinal legs each have a bent end, which form the free ends of the spring assembly, which in force to be acted upon elements, in particular the main body, the release lever and the Catch lever, engage and enforce these preferably in whole or in part.

So that the spiral spring does not have to be designed too large, it is also advantageous if the spiral spring arrangement has a spring core. The task of the spring core is to guide the spiral spring and to allow a very good preload, preferably a nearly maximum, bias of the spiral spring.

Constructively, this is easy to implement by the bending spring or its longitudinal leg is at least partially laid around a spring core / are, which serves as a spring amplifier.

In terms of a compact construction of the spring arrangement is further advantageous if the spring core has a shape adapted to the shape of the bent longitudinal leg shape and a partial support of these longitudinal limbs over a part of Ensures length of these legs, especially in their sections that widen.

It may also be advantageously provided that on the spring core laterally two parallel walls are formed, between which a slot is formed, in which the longitudinal limbs and - if present - preferably the bending over a part of their length einliegen.

The configured according to one or more of the claims related spring core may be formed one or more parts. Preferably - but not mandatory - it is inexpensive plastic.

It is also advantageous if the lower end of the spiral spring passes through the bore of the release lever, so that the lower end serves as a rotary shaft for the release lever, which can rotate about the free end of the spiral spring, which in turn can move relative to the base body, so that the release lever can perform a superimposed rotational and translational movement on the base body.

It can be advantageously provided that the release lever has a torque transmission contour for applying a corresponding tool.

What is also provided is a frame for a drawer with a locking device according to one of the related claims and a drawer according to claim 15 with a frame according to claim 14 and with a panel with a connection fitting which is attached to the locking device. The bezel can be a front bezel. For the purposes of the claims, however, the term "diaphragm" also includes, for example, a rear wall or another wall. Also, the term of the frame is not too narrow to understand.

Further advantageous embodiments of the invention can be found in the dependent claims.

Fig. 1:

eine räumliche Ansicht eines Kastenmöbels mit drei Schubkästen, die sich in einem geschlossenen Zustand befinden;

Fig. 2

eine perspektivische Ansicht eines Teils eines Schubkastens für ein Kastenmöbel nach Art der Fig. 1, mit einem Boden, einer Zarge und einer Rückwand und einem in die Zarge eingesetzten Blenden-Arretierbeschlag;

Fig. 3

eine perspektivische Ansicht der Zarge aus Fig. 2 mit einem Blenden-Arretierbeschlag;

Fig. 4

eine perspektivische Ansicht des Blenden-Arretierbeschlags aus Fig.2 und 3 an einem Zargenadapter,

Fig. 5

eine Explosionsansicht der Anordnung aus Fig. 4;

Fig. 6

eine Seitenansicht der Anordnung aus Fig. 4 vor bzw. bei einem beginnenden Ansetzen eines Verbindungsbeschlags für eine Frontblende an eine Arretiervorrichtung des Blenden-Arretierbeschlags, wobei eine Basisplatte ausgeblendet worden ist;

Fig. 7a, b, c

in a) und b) um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 6 in einem im Vergleich zu Fig. 6 etwas späteren Stadiums des Ansetzens des Verbindungsbeschlags an die Arretiervorrichtung;

Fig. 8a, b

in a) und b) um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 7 in einem im Vergleich zu Fig. 7 wiederum späteren Stadiums des Ansetzens des Verbindungsbeschlags an die Arretiervorrichtung, wobei von letzterem nur ein Bolzen dargestellt ist;

Fig. 9a, b

in a) und b) um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 8 in einem im Vergleich zu Fig. 8 wiederum späteren Stadiums des Ansetzens des Verbindungsbeschlags an die Arretiervorrichtung, wobei von letzterem nur ein Bolzen dargestellt ist;

Fig. 10a, b

in a) und b) um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 9 mit vollständig an die Arretiervorrichtung angesetzten und dort verriegelten Verbindungsbeschlag, wobei von letzterem nur ein Bolzen dargestellt ist;

Fig. 11

eine perspektivische Ansicht eines weiteren Blenden-Arretierbeschlags,

Fig. 12

eine Explosionsansicht der Anordnung aus Fig. 11;

Fig. 13

eine Seitenansicht der Anordnung aus Fig. 11 vor bzw. bei einem beginnenden Ansetzen eines Verbindungsbeschlags für eine Frontblende an eine Arretiervorrichtung des Blenden-Arretierbeschlags;

Fig. 14a, b

in a) und b) zwei relativ zueinander um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 11, 12 und 13 in einem im Vergleich zu Fig. 13 etwas späteren Stadiums des Ansetzens des Verbindungsbeschlags an die Arretiervorrichtung;

Fig. 15

in a) und b) eine Seitenansicht und eine perspektivische Ansicht der Anordnung aus Fig. 11, 12 und 13 in einem im Vergleich zu Fig. 14 a, b etwas späteren Stadiums des Ansetzens des Verbindungsbeschlags an die Arretiervorrichtung, wobei von letzterem nur ein Bolzen dargestellt ist; und

Fig. 16

eine Seitenansicht der Anordnung aus Fig. 15 mit vollständig an die Arretiervorrichtung angesetzten und dort verriegelten Verbindungsbeschlag , wobei von letzterem nur ein Bolzen dargestellt ist;

Fig. 17a - c

in a) bis c) verschiedene Ansichten eines dritten Blenden-Arretierbeschlags vor dem Ansetzen des Verbindungsbeschlags an die Arretiervorrichtung;

Fig. 18a, b

in a) und b) zwei relativ zueinander um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 17 in einem im Vergleich zu Fig. 17 etwas späteren Stadium des Ansetzens des Verbindungsbeschlages, wobei von letzterem nur ein Bolzen dargestellt ist;

Fig. 19a, b

in a) und b) zwei relativ zueinander um 180° zueinander gedrehte Seitenansichten der Anordnung aus Fig. 18 mit vollständig an die Arretiervorrichtung angesetzten und dort verriegelten Verbindungsbeschlag, wobei von letzterem nur ein Bolzen dargestellt ist;

Fig. 20a)-e)

verschiedene Ansichten und Teilansichten eines weiteren Ausführungsbeispiels eines Kraftspeichers, in a) bis c) mit entspannter und in d) und e) mit gespannter Feder.

The invention will be described in more detail with reference to an embodiment with reference to the drawings. Show it:

Fig. 1:

a three-dimensional view of a box cabinet with three drawers, which are in a closed state;

Fig. 2

a perspective view of a portion of a drawer for a cabinet furniture in the manner of Fig. 1 with a bottom, a frame and a rear wall and an aperture-locking fitting inserted into the frame;

Fig. 3

a perspective view of the frame Fig. 2 with a shutter lock fitting;

Fig. 4

a perspective view of the shutter locking fitting Fig.2 and 3 on a frame adapter,

Fig. 5

an exploded view of the arrangement Fig. 4 ;

Fig. 6

a side view of the arrangement Fig. 4 before or at an initial attachment of a connection fitting for a front panel to a locking device of the visor locking fitting, wherein a base plate has been hidden;

Fig. 7a, b, c

in a) and b) rotated by 180 ° to each other side views of the arrangement Fig. 6 in one compared to Fig. 6 slightly later stage of attaching the connection fitting to the locking device;

Fig. 8a, b

in a) and b) rotated by 180 ° to each other side views of the arrangement Fig. 7 in one compared to Fig. 7 turn later stage of the attachment of the connection fitting to the locking device, the latter being shown only a bolt;

Fig. 9a, b

in a) and b) rotated by 180 ° to each other side views of the arrangement Fig. 8 in one compared to Fig. 8 turn later stage of the attachment of the connection fitting to the locking device, the latter being shown only a bolt;

Fig. 10a, b

in a) and b) rotated by 180 ° to each other side views of the arrangement Fig. 9 with fully attached to the locking device and there locked connection fitting, the latter being shown only a bolt;

Fig. 11

a perspective view of another panel locking fitting,

Fig. 12

an exploded view of the arrangement Fig. 11 ;

Fig. 13

a side view of the arrangement Fig. 11 before or at an initial attachment of a connection fitting for a front panel to a locking device of the shutter locking fitting;

Fig. 14a, b

in a) and b) two relative to each other rotated by 180 ° to each other side views of the arrangement Fig. 11 . 12 and 13 in one compared to Fig. 13 slightly later stage of attaching the connection fitting to the locking device;

Fig. 15

in a) and b) is a side view and a perspective view of the arrangement Fig. 11 . 12 and 13 in one compared to Fig. 14 a . b slightly later stage of the attachment of the connection fitting to the locking device, of the latter only a bolt is shown; and

Fig. 16

a side view of the arrangement Fig. 15 with fully attached to the locking device and locked there connection fitting, the latter being shown only a bolt;

Fig. 17a - c

in a) to c) different views of a third diaphragm locking fitting before attaching the connecting fitting to the locking device;

Fig. 18a, b

in a) and b) two relative to each other rotated by 180 ° to each other side views of the arrangement Fig. 17 in one compared to Fig. 17 slightly later stage of the attachment of the connection fitting, of the latter only a bolt is shown;

Fig. 19a, b

in a) and b) two relative to each other rotated by 180 ° to each other side views of the arrangement Fig. 18 with completely to the locking device attached and locked there connection fitting, the latter being shown only a bolt;

Fig. 20a) -e)

different views and partial views of another embodiment of a force accumulator, in a) to c) with relaxed and in d) and e) with cocked spring.

In Fig. 1 is a piece of furniture 1 with a furniture body 2 with side walls 3 shown. In the furniture body 2 are between the side walls 3 more here - purely exemplary three - drawers 4, 5, set 6, which are guided inside by means of (not shown here) pullout relative to the furniture body 2 on the side walls 3, so that each of the drawers , 5, 6 are each pulled out of the furniture body 2 in an open position and again pushed out of this into a closed position.

One or more of the drawers 4, 5 and 6 have (see Fig. 1 and 2 in interaction) preferably a front panel 7a or 7b (here in two different vertical heights) on, two here parallel (side) frames 8 (of which in Fig. 2 one shown), a rear wall 9 and a bottom 10. The in Fig. 2 illustrated drawer 5, the front panel 7a - here a vertically relatively flat front panel - on.

The frame 8 has (see Fig. 2 ) on a main extension direction X. This direction X is also the direction in which the drawer in the furniture body 3 can be inserted and pulled out of this. The after Fig. 1 For this vertical direction is the direction Y - in which the width of the frame 8 is measured - and the other vertical direction in the usual installed position, the direction Z.

The frames 8 - see Fig. 2 and 3 - Are preferably constructed in each case two shells and have an inner shell 11 and an outer shell 12. The inner shell 11 comprises with the outer shell 12 each have a narrow cavity 13. A single-shell construction with a corresponding cavity would also be conceivable.

Preferably, but not necessarily, the outer shell 12 and the inner shell 11 are made of a metal, in particular steel sheets, or of a light metal, in particular of aluminum or an aluminum alloy.

It is further preferred that the outer shell 12 and the inner shell 11 form a very narrow frame 8, the cavity 13 is preferably narrower than 15 mm. Especially with such narrow frames 8, the invention to be explained below can be used advantageously.

The front panels 7a, b are in each case mounted and held on the two frames 8 with at least one diaphragm lock fitting consisting of a connection fitting 15 fastened to the front panel and a locking device 14 arranged and fastened to the frame 8 (FIG. Fig. 4 to 10 ).

In the Fig. 2 shown frame 8 therefore has the in each case Fig. 4 ff or in the Fig. 11 ff pictured locking device 14, which is each designed to first engage behind the connecting bracket 15 on the front panel 7a when attaching the front panel 7a or b to the frame 8, then pull up to the frame 8 zoom and then fixed to this - but again releasable - to keep locked. This is in the Fig. 6 to 10 shown in several consecutive steps.

Since the frame 8 is designed relatively narrow in the Y direction and at least in variants also vertically relatively flat, it is necessary to provide a correspondingly compact designed but still safe and good functioning locking device 14.

This is implemented with the locking device 14 to be described below, which is designed to engage behind the connection fitting 15 and secure it to the frame 8.

First, the connection fitting 15 is briefly considered. The connection fitting 15 has a diaphragm support 16 - see Fig. 5 and 6 - On, with one or more fasteners (not shown here) such as screws on the side facing the frame 8 side of the front panel 7 a can be fastened. At the diaphragm support 16 here are two here in the direction of the frame 8 extending parallel webs 17 are provided, which are connected to each other with a bolt 18, wherein the bolt 18 is spaced from the diaphragm support 16 so that there is a free space between them. Here, the pin 18 is the element to be engaged by the locking device 14.

This embodiment of the connection fitting 15 is preferred, but is not mandatory, but can be varied as long as an engageable by the locking device 14 element on the panel support 16 or the front panel 7a, b itself is provided.

The locking device 14 is attached to a carrier element 19 (FIG. Fig. 4 or 11 ) of the frame 8 attached as an abutment. In this case, the connection fitting 15 is further adjustable with at least one adjusting device 50 from the position (Y and / or Z direction) relative to the locking device 14, which is advantageous but not mandatory.

The support member 19 is here a Zargenadapter, which is further formed here as a sheet metal part, and which is fixed to the frame 8, for example in the cavity 13, e.g. on the inner shell 11 or the outer shell 12. The support member 19 may also be configured integrally with the frame 8. It serves as an abutment for the locking device 14 on the frame 8.

On the support member 19 is a base body, here a base plate assembly with here two base plates 20, 21, attached. The base plates 20, 21 extend in sections parallel to each other and are spaced from each other. They are angled here at one or more edges. Here are the base plates 20, 21 on both sides of the support member 19 and are fixed to this adjustable with fastening means 22 and the side adjustment 50.

The base plates 20, 21 protrude in the direction of the front panel 7a or in this case of the connection fitting 15 both in sections over the carrier element 19, so that a slot 23 is formed between them ( Fig. 4 ). Instead of two (or even more) base plates 20, 21, the base plate assembly could have only a single base plate or more base plates than two, but the embodiment with two base plates 20, 21 is preferred since the elements to be described are well and safe in them held and managed. The base plates 20, 21 are connected to each other with a fixing means such as rivets or the like (reference numeral 22) to a flat base plate assembly with the slot 23. They are arranged on the support member 19 adjustable according to a variant or fixed by another variant - so not adjustable - positioned.

• einen ein- oder mehrteiligen Auslösehebel 24,
• einen Fanghebel 25, und
• einen Kraftspeicher, hier in Form eines Federelementes 26.

In addition to the base plate (s) 20, 21 as the main body, the locking device 14 has three main functional elements arranged on the base plate arrangement at least in a manner that is limitedly movable relative to it:

• a one- or multi-part release lever 24,
• a catch lever 25, and
• an energy storage, here in the form of a spring element 26th

The release lever 24 is arranged on the one outer side of the base plate assembly and the catch lever 25 on the other side or between the base plates 20, 21 of the plate assembly in the slot 23. Here is the catch lever 25 in the slot 23. Such can these lever 24th , 25 in each case rotate and / or translate on these pages. They are thus compact in a small space. In the side view - see eg Fig. 7a - Are the trigger lever 24 and the catch lever 25 thus partially overlapping one another.

The energy storage device 26 is used for energy storage and release and for applying force to the release lever 24 and the catch lever 25. It can be configured in various ways, with a preferred and advantageous embodiment will be described below.

The energy storage 26 is after Fig. 4 to 10 such as Fig. 20 each designed as a spiral spring arrangement, which is very advantageous, but again not mandatory.

This energy storage 26 as a spiral spring arrangement forms a particularly advantageous designed power storage 26 for applying force to the locking devices 14 in particular according to the accompanying figures, but also forms an independent invention and is thus advantageous as energy storage for use in fittings of various kinds, especially furniture fittings.

The spiral spring assembly comprises a bending spring 28 (see also Fig. 5 ), here a wire bending spring, which has a U-shaped basic shape with two longitudinal limbs 29, 30. These longitudinal legs can be connected to each other via a bend 31 (see Fig. 5 and Fig. 6 ). But it is also conceivable that the longitudinal legs 29, 30 are not connected to each other, so that the bending spring 28 is not in one piece but is designed in several pieces. Such an embodiment show the Fig. 20a) to Fig. 20 e) ,

The bend 31 and the longitudinal limbs 29, 30 run as far as possible in one plane. This plane runs here parallel to the base plate arrangement - here to the base plates 20, 21 in the X / Z plane. The bending spring 28 is thus housed very compact parallel to the base plate assembly. It lies substantially on the outside of the base plate assembly parallel to this. This is also after Fig. 20 the case.

The two longitudinal legs 29, 30 of the bending spring 28 can be compressed in the Z direction at their free ends, whereby the bending spring 28 stores energy that can be released by relaxing - ie by moving the longitudinal legs 29, 30 away from each other - in a manner to be described, the release lever 24 and the catch lever 25 to move. The bending spring 28 is partially placed around a spring core 32 (see Fig. 6 and Fig. 20 ), which serves as a spring amplifier.

To Fig. 20 are the two longitudinal legs 29, 30 respectively inserted with their one ends in (here blind hole-like) openings 60, 61 of the spring core 32 and are held and fixed. Otherwise correspond structure and function of the spring element of Fig. 20 as far as possible of the spring element of Fig. 6 , in particular with regard to the possibility of connection to the locking device.

The spring core 32 has a shape adapted to the shape of the bent longitudinal limbs 29, 30 and allows partial support of these longitudinal limbs 29, 30 over part of the length of these limbs, in particular in their sections which adjoin the bend 31 in a widening manner ( Fig. 6 ) or which adjoin the ends of the longitudinal legs 29, 30, which are turned to the spring core 32.

In addition, on the spring core 32 laterally two parallel walls 33, 34 are formed, between which a slot 35 is formed, in which the longitudinal legs 29, 30 over a portion of their length and -if existing - preferably the bend 31 are arranged.

In this way, the bending spring 28 is well protected and guided defined on the spring core 32. By the spring core 32, its effect is advantageously optimized. The walls 33, 34 lie parallel to the plate assembly in the X / Z plane. In the following figures, the function of the spiral spring is shown in interaction with a spring core. The object and the advantage of the spring core 32 achieved here is to guide the bending spring 28 and to increase the energy storable or stored in the bending spring 28 relative to a spring without a core. It is conceivable to design the spring core in one or more pieces.

The physical basis for the design of the spring core 32 is according to a preferred embodiment is to bias the one or more parts bending spring 28 of the energy accumulator 26 - partially or even in almost every area to all or relatively close to the smallest possible elastic bending radius, which here as Energy increase is understood, since this position would not be practically usable without spring amplifier. If this radius is undershot, a plastic deformation occurs in the bending spring 28, as a result of which further energy storage is no longer possible. The bending spring 28 is then overstretched. Conceptually, the spring core 32 corresponds to a portion of a cylinder around which the spring wire is wound and assumes the straight shape when unwinding. Parameters required for calculation are wire cross-section, material yield strength, modulus of elasticity. Thus, with a material yield strength of 1100 N / mm ² , a spring diameter of 2.5 mm, an E modulus of 185000 N / mm ² on a wire wound around a cylinder results in a bending inner radius of 208, 98 mm. Alternatively, the spring core 32 can be easily designed in the experiment.

The radius R of the spring core 32 (see Fig. 7a and 20a ) preferably corresponds to the maximum or maximum elastic elongation of the bending spring without adverse deformation effects.

Preferably, the arcuate longitudinal legs 29, 30 are arranged parallel to the main extension direction of the frame 8 and the bend 31 of the bending spring 28 is oriented to the side facing away from the connecting fitting 15 side of the locking device 14, so that the bending spring 28 well in the long in the X direction Cavity 13 of the frame 8 on the side facing away from the release lever 24 side of the locking device can be accommodated.

The longitudinal limbs 29, 30 are each bent by 90 ° (i.e., perpendicular to the base plate arrangement) at their free ends 36, 37, which are oriented in the assembly position on the frame 8 or on the pre-assembled drawer 4 in the direction of the front panel 7a. The one - here upper - free end 36 passes through a bore 38 of the base plate assembly (here the two base plates 20, 21) and the other - here lower free end 37 on the other hand, a slot (or a slot 39) of the base plate assembly (here the two base plates 20, 21). The bore 38 and the slot 39 are here in the Z direction (in the usual installed position on a drawer, the vertical direction) vertically aligned. The slot 39 is also vertically aligned here and lies here in the vertical direction (Z) below the bore 38th

This is the one free end - here the upper end - 36 of the spiral spring defines stationary but preferably rotatable on the base plate assembly in the bore 38, while the other - here lower free end 37 can move in the slot 39 of the base plate assembly.

The lower free end 37 of the spiral spring 28 further penetrates a bore 40 of the release lever 24. The lower free end 37 thus serves as a rotary shaft for the release lever 24, which can rotate about the free end 37 of the spiral spring 28, which in turn in the slot 39 can move. In this way, the release lever 24 can perform a superimposed rotational and translational movement on the base plate assembly.

The lower free end 37 of the spiral spring 28 also passes through a bore 41 of the catch lever 25, so that this can perform a superimposed rotational and translational movement of the base plate assembly. In this case, the catch lever 25 also has a slot 42 which is slightly bent here and is located above the bore 41. This slot 42 is penetrated by the other - here upper - free end 36 of the spiral spring 28. In this way, the catch lever 25 is forced to a defined rotational and translational movement (to be described in more detail) when the lower free end 37 of the bending spring 28 shifts in the slot 39 of the base plate arrangement, which entrains the catch lever 25.

The lower free end 37 of the bending spring 28 is located at the upper end of the slot 39 of the base plate assembly, the bending spring 28 is tensioned. This position corresponds to a position in which the front panel 7 is not yet attached.

On the other hand, if the lower free end 37 of the bending spring 28 is located at the lower end of the slot 39 of the base plate arrangement, then the bending spring 28 is in its relaxed state. This position corresponds to a position in which the front panel 7 has been attached. The catch lever 25 has a hook-like locking 43, which then engages behind the undercut, here the bolt 18 of the connection fitting 15, which is then inserted into a horizontally extending slot 44 of the base plate assembly, which is open towards the front panel 7a.

Thus, the bending spring 28 can be held in the cocked position and thus they can be released from this and also so that the bending spring 28 can be moved from the relaxed position in the cocked, the release lever 24 is provided.

The trigger lever 24 has a torque transmission contour 45. Here, this is not intended for direct manual movement, but for applying a corresponding tool (exemplary training: Phillips and screwdriver).

The trigger lever 24 also has an arc shape, wherein at the inner radius of this arc, a control contour 46 is formed. With this control contour 46, the release lever 25 adjoins the base plate arrangement in the mounted position on a pin 47 (FIG. Fig. 7b ), which is provided on the side of the base plate assembly and projects therefrom, on which also the release lever 24 is provided.

In this case, the coordination of the control contour 46 and pin 47 and the pivot bearing at the lower free end 37 of the bending spring 28 in the slot 39 is such that the release lever 24 is movable with the tool in a release position, in which the lower free end 37 of the spiral spring 28 is located in the slot 39 of the base plate assembly at the upper end, so that the bending spring 28 is tensioned. The control contour 46 has for this purpose a cam portion 48. Upon rotation of the trigger lever 24 in the position in which the one free end 37 of the bending spring 28 in the slot 39 of the base plate assembly is on top, the cam portion 48 has been run over in a locking direction / position. This position is in the manner of an over-center position a very stable position (here Fig. 6 . 7b ). It requires an external action, a trigger to release the locking device or the release lever 24 from this position.

The locking device 14 is biased in this state. The locking 43 of the catch lever 25 is outside - here above - the slot 44 for insertion of the connection fitting 15th

In this position further is a free end 49 - a web 49 - of the trigger lever 24 approximately at the height of the slot 44 for insertion of the connection fitting 15. This free end 49 of the trigger lever 24 is dimensioned so that at him when attaching the front panel an edge of the connection fitting 15 comes to rest ( Fig. 7a . 7b ). Upon further insertion of the connection fitting 15 or the front panel 7a or 7b, the free end 49 of the release lever 24 is moved further, so that the release lever 24 begins to rotate. During this rotation, the cam portion 48 is overrun in the opposite direction as when tightening ( Fig. 8a . 8b ). This solves the arrangement of the over-center position. As a result, now the spring, here the bending spring 28, relax. This in turn causes the already described movement of the catch lever 25 in the locked position. The lower free end of the bending spring 28 pulls the catch lever 25 down so that the upper end 36 of the catch lever 25 is displaced in the slot or in the slot 42 of the catch lever 25.

The vote of the slots or scenes and pivot bearing of the locking device 14 is such that the catch lever 25 begins the undercut (here the bolt 18) of the connection fitting 15 with its locking 43, to engage behind what the connection fitting 15 due to the action of the bending spring 28th continues to pull the locking device 14 and keeps it stable. This position is releasable by turning back the release lever 24 with a tool, to which again the cam portion 48 is to be run over by tool operation.

Overall, such a very compact and yet secure Arretierbeschlag is created.

The Fig. 11 to 16 show a further embodiment of a diaphragm lock fitting.

This aperture lock fitting is largely identical to that of Fig. 4 to 10 designed. Therefore, like reference numerals have been given, and it is possible to fully refer to the description of the structure and function of the first embodiment.

However, there are the following differences:
In the embodiment of the Fig. 11 ff is the slot 39 in the base plates not vertically or perpendicular to the main extension direction X of the frame 8 aligned, but slightly inclined to the vertical (Y-axis) at an angle <30 °.

In addition, the upper end 36 of the spiral spring 28 engages through a bore 51 in the catch lever 25 'and the lower end 37 of the spiral spring 28 a slot 42' below this bore 51. In addition, in the catch lever 25 'below the slot 42', which is the lower free End 37 of the spiral spring 28 passes through, another slot 52 is formed, which extends substantially in the main extension direction X, thus aligned at an angle to the slot 42 'and is penetrated by a mounted on the base plate assembly pin 53.

In this way, the catch lever 25 ', in turn, from a starting position in which the hook-like locking member 43 is outside the height Z of the slot 44 on the front panel assembly, move to a position in which the locking 43 an undercut, in particular again the bolt 18, engages behind the connection fitting 15. The triggering by the release lever 24 and the further course of the movement are essentially analogous to the Fig. 6 to 10 from.

This means that the connection fitting 15 first reaches the web 49 as the free end of the release lever 24 (FIG. Fig. 13 to Fig. 14a . b ). The release lever 24 is thereby rotated and is released from a locking position / Übertotpunktstellung. As a result, the bending spring 28 can relax, whose here lower free end 37 shifts in the scenes / slots 39 and 42 ', which rotates and moves the locking lever 25 so that its locking 43, the bolt 18 on the connection fitting engages behind this further on the locking fitting 14 or on the corresponding frame 8 and then spring assisted holds there ( Fig. 14 . 15 . 16 ).

Also the variant of Fig. 11 to 16 locked the front panel 7 safely and is designed compact, the variant of the Fig. 4 to 10 is preferred because of the even simpler or more compact design.

Instead of providing a separate support element 19, which is or will be arranged on the frame, the base plate arrangement, in particular one of the base plates 20, 21 may be connected directly to the frame 8 or consist of a part of the frame 8.

To 17 to 19 the trigger lever 24 is multi-piece, here designed in two pieces and has a first lever arm 24a and a second lever arm 24b articulated thereto. The first lever arm 24 a is here provided with the torque transmission contour 45. He has here as the upper axis of rotation of the end 37 of the spiral spring 28, which passes through him and the slot 39 in the body. It is designed such that it with the connection fitting 15 (see Fig. 17a . b ) is solvable from an over-center position assumed together with the second lever arm 24b, wherein it rotates the second lever arm 24b during a deflection so that it is rotated with the over-center position, so that the energy accumulator 26 can exert its effect. Here is the power storage, the spiral spring assembly with the bending spring 28, which can relax, so that the catch lever 25 analogous to Fig. 7 to 10 is moved into a locking position.

Thus, the locking device from the over-center position of Fig. 17a . b solved. The relaxation of the bending spring 28 in turn causes the already described movement of the catch lever 25 in the locking position. The lower free end of the spiral spring 28 pulls the catch lever 25 down so that the upper end 36 of the catch lever 25 is displaced in the slot or in the slot 42 of the catch lever 25.

The vote of the slots or scenes and pivot bearing of the locking device 14 is in turn such that the catch lever 25 begins the undercut (here the bolt 18) of the connection fitting 15 with its locking 43 to engage behind what the connection fitting 15 due to the action of the spiral spring 28 continues to pull the locking device 14 and keeps it stable. This position is releasable by turning back the release lever on the lever arm 24a with a tool. Overall, a very compact and yet secure Arretierbeschlag is created in such a way. <B> reference numerals </ b> Furniture 1 furniture body 2 Side wall 3 drawer 4, 5, 6 front panel 7a, 7b frame 8th rear wall 9 ground 10 inner shell 11 outer shell 12 cavity 13 locking device 14 connecting fitting 15 Screen support 16 web 17 bolt 18 support element 19 base plates 20, 21 fastener 22 slot 23 sear 24 lever arm 24a, b catch lever 25, 25 ' power storage 26 opening 27 bending spring 28 longitudinal leg 29, 30 bend 31 innerspring 32 wall 33, 34 slot 35 Free end 36, 37 drilling 38 Long hole 39 Bore release lever 40 Bore catch lever 41 Long hole catch lever 42, 42 ' arresting 43 Slot for bolts 44 Torque transmission contour 45 control contour 46 pen 47 cam section 48 web 49 adjustment 50 drilling 51 Long hole 52 pen 53 fastener 54 radius R direction X direction Y direction Z

Claims (15)

1. Locking device (14) for a locking fitting for a frame, which is designed to cooperate with a connection fitting (15) for a panel (8), said locking device having the following features:

   a) a one-piece or multi-piece main body,

   b) at least three main functional elements are provided on the locking device (14), said functional elements being movable at least to a limited extent:

   i) a release lever (24),

   ii) a catch lever (25, 25'), and

   iii) a force accumulator (26),

   c) wherein the catch lever (25, 25') and the release lever (24) are movable in parallel planes and are at least partially in alignment with one another in a view perpendicular to said planes,
   characterized in that

   d) one end (36) of the force accumulator (26) passes through a bore (38) and the other end (37) passes through an elongated hole (39) in the main body, in which it is displaceable,

   e) wherein the other end (37) of the force accumulator (26), as it moves in the elongated hole (39) of the main body, additionally moves the catch lever (25) into a locking position as the tension of the force accumulator (26) is released.
2. Locking device according to claim 1, characterized in that the release lever (24) is arranged on one outer side of the main body and the catch lever (25, 25') is arranged on the other outer side or between two elements of the main body (20, 21) in a slot (23).
3. Locking device according to claim 1 or 2, characterized in that the release lever (24) is rotatably mounted on the one end (37) of the force accumulator (26) that is additionally displaceably guided in the elongated hole (39) of the main body.
4. Locking device according to one of the preceding claims, characterized in that the release lever (24) defines an over-centre position in which the force accumulator (26) is tensioned, and in that the release lever (24) can be released from this over-centre position by a as a result of the connection fitting (15) being placed onto the locking device (14), so that the tension of the force accumulator (26) can be released.
5. Locking device according to one of the preceding claims, characterized in that the release lever (24) forms a control contour (46) with a cam portion (48) which defines the over-centre position in which the force accumulator (26) is tensioned.
6. Locking device according to one of the preceding claims, characterized in that the release lever (24) is formed of one or more parts and, in the case of a multi-part configuration, has at least two lever arms (24a, 24b).
7. Locking device according to one of the preceding claims, characterized in that one end (36 or 37) of the force accumulator (26) is additionally mounted in a bore (41) of the catch lever (25), and in that the other end (36 or 37) of the force accumulator (26) passes through an elongated hole (42) of the catch lever (25) such that the catch lever (25), as the tension of the force accumulator (26) is released, is moved by the force accumulator into a locking position in which the catch lever (25) locks an element, in particular a bolt (18), of the connection fitting (15).
8. Locking device according to one of the preceding claims, characterized in that the force accumulator (26) is designed as a bending spring arrangement, wherein the bending spring arrangement preferably has a V-shaped or U-shaped bending spring (28) which consists of one or more parts and which has two longitudinal limbs (29, 30).
9. Locking device according to one of the preceding claims, characterized in that the two longitudinal limbs (29, 30) have bent ends which form the free ends (36, 37) of the force accumulator (26) that engage in and preferably pass through the main body, the release lever (24) and the catch lever (25).
10. Locking device according to one of the preceding claims, characterized in that the bending spring (28) is placed partially around at least one spring core (32), which serves as a spring reinforcer.
11. Locking device according to one of the preceding claims, characterized in that one free end (37) of the bending spring (28) passes through the bore (40) of the release lever (24) such that the one free end (37) serves as a rotation shaft for the release lever (24), said release lever additionally being able to rotate about the one free end (37) of the bending spring (28) that can in turn be displaced relative to the main body, so that the release lever (24) can execute a superimposed rotational and translational movement on the main body.
12. Locking device according to one of the preceding claims, characterized in that the elongated hole (42) of the catch lever (25) is located above the bore (41), or in that the elongated hole (42') of the catch lever (25') is located below the bore (51).
13. Locking device according to one of the preceding claims, characterized in that the main body has a pin (47), and in that the release lever (24) can be moved by the tool into a release position in which one free end (37) of the spring arrangement (26) is located at the top end in the elongated hole (39) of the main body, so that the bending spring (28) is tensioned.
14. Frame (8), for a drawer (4, 5, 6), characterized by a locking device (14) according to one of the preceding claims.
15. Drawer comprising a frame according to claim 14 and comprising a panel with a connection fitting (15) which can be fastened to the locking device (14).

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