EP3745921B1 - Securing device for a panel of a drawer - Google Patents

Description

The invention relates to a fastening device for fastening a panel of a drawer to a frame, the fastening device having a retaining element which can be arranged on the panel side and having at least two catch devices arranged on the frame side.

In the DE 94 21 872 U1 describes a fastening device for fastening the front panel of a drawer to drawer carriages. The fastening device has a locking device provided in addition to a retaining spring 15 self-locking non-positive or clamping and after 21 form-fitting. In this way, a safety function is to be implemented in order to reliably prevent the device from coming loose unintentionally, for example as a result of very heavy stress from shaking movements or the like.

EP 2747599 A discloses using two or more of the catch devices one above the other in relatively high drawers. As a result, it is necessary to either lock and release the two safety catches separately for locking and releasing the panel on the respective frames, or to lock and release them together. A common manual unlocking of two safety gears by pressing an element with a single drive geometry with a tool is from CN 104 367 012 B famous.

The first of these three solutions is more time-consuming in terms of actuation, whereas the other solutions require the implementation of a mechanically relatively complex coupling mechanism between the two safety gears, which on the one hand is usually relatively expensive and on the other hand has the disadvantage of relatively high actuating forces when unlocking, since it is usually necessary to move the catch devices from the locked position to the unlocked position with just a single operation against the cumulative spring forces of both fastening devices.

The object of the invention is to provide a solution to this problem that is simple to implement in terms of design and functionally reliable with simple handling.

The invention solves this problem by the subject matter of claim 1 and the method according to claims 14 and 15.

Advantageous configurations of the invention can be found in the dependent claims.

According to the characterizing part of claim 1, the catching devices for locking are mechanically functionally coupled to one another in such a way that they can be locked together with an attachment or with a single operation on the or the respective holding element. On the other hand, the two safety gears for unlocking are not mechanically functionally coupled to one another, i.e. mechanically decoupled, so that unlocking takes place or must take place by actuating the two safety gears separately. In other words, the two safety gears have a mechanical operative connection when locking, whereas they are not mechanically operatively connected when unlocking, but have to be actuated—released—individually.

The advantage of this is that significantly lower forces are required for releasing than in an embodiment in which the two safety gears are put into the release position together by only a single actuation, since in the latter case with only a single actuation movement both safety gears counteract the effect of the two Spring devices would have to be solved.

When the two safety devices are actuated separately, however, the release occurs separately—preferably with a time offset—separately against the action of only one of the spring devices. The loosening takes a little longer for each frame - often only a few seconds - but is much easier to carry out. The locking, on the other hand, can be carried out simply as part of a single attachment movement of the panel to the frame.

In addition, it is advantageous on the characterizing part of claim 1 that from a structural point of view only a kinematic coupling for locking but no kinematic Coupling must be implemented to release, which would make the construction of the arrangement of two safety gears much more expensive.

According to a first variant, provision can be made for the respective catch element to be locked in the catch position on one or both catch device(s) solely as a result of a local displacement of the axis of rotation of the catch element. The invention can be implemented in a structurally particularly simple manner in a safety gear that operates according to this operating principle.

For constructive implementation, a release element can then advantageously and easily be provided such that the release element is positively coupled to the catching element of one safety gear both during unlocking and during locking and that the release element is positively coupled to the catching element of the other safety gear only during locking is coupled.

If the catching element is locked in the catching position on one or both catching devices due to a local displacement of the axis of rotation of the catching element, it is advantageous if the rotary movement or the pivoting of the respective catching element about its axis of rotation is a movement that locally shifts the axis of rotation - preferably a linear movement superimposed on the axis of rotation or upstream or downstream. This defined shifting of the position of the axis of rotation can in particular be effected by shifting the central axis of an axle section or bolt or the like, with or on which the catching element of the catching device is pivotably mounted. In this case, the position is shifted into a catch position, which is selected in such a way that an additional locking effect results from the shift of the axis of rotation.

It can advantageously be provided that the direction of movement of the axis of rotation of the two catch elements is aligned perpendicularly or essentially perpendicularly to a direction of movement of the holding element when the holding element is locked on the catch device when it is displaced.

In addition, in order to achieve an effective locking mechanism, provision can be made for the respective axis of rotation to be displaced in such a way that, in the catch position, it is in the Y direction perpendicular to the main direction of extension of the frame on or close to the Y position of the central axis of a retaining bolt of a retaining element. In this way it can be achieved that the current axis of rotation of the catch element in the arrested or locked state of the catch device can be preferably just below or above the plane of action or on the plane of action of the holding element, in particular a holding bolt of the holding element on the panel. The effective plane is defined here by the plane spanned between the X and Z axes, which runs parallel to the base of the frame. As a result, an opening movement of the drawer, which is accompanied by the exertion of force on the panel, can only exert a very small amount of torque or even no torque at all on the catch element, so that it is advantageously virtually impossible to overcome the locking mechanism simply by opening the drawer . An additional bolt--for example, a form-fitting bolt that keeps the catching element locked in the holding position, or the implementation of a clamping effect that holds the holding element--are therefore no longer required.

In a preferred embodiment of the invention, a drive geometry for a tool is introduced into the catching element of one catching device. In interaction with the tool, the drive geometry is used in a simple manner in terms of design and production technology and is therefore advantageous as an option for unlocking and returning the catch element. On the other hand, on the other safety gear, this drive device is not introduced into the safety catch element but into the release element associated with the safety catch device.

In a preferred embodiment of the invention, the displacement of the respective axis of rotation is defined by a guide cam and a connecting link. This results in a defined displacement of the axis of rotation that is easy to implement in terms of production technology and is therefore advantageous.

It can advantageously be provided that the displacement of the axis of rotation of the respective catch element is defined by a mechanical control device, which links the shifting of the axis of rotation with the pivoting position of the catch element. In this way, a precise and defined movement into the catch position and out of the release position is implemented. It is structurally simple and safe if the mechanical control device is formed by corresponding teeth. Thus, according to an advantageous embodiment, the toothing can comprise a toothing of the catching element and a corresponding toothing of the base element.

For example, the toothing of the respective base element can be configured in a simple and advantageous manner as a linear toothing, preferably as a rack, which is arranged or configured on the base element.

In a further preferred embodiment variant of the invention, the respective displacement of the axis of rotation of the catching element is supported by the rolling of a toothing of the catching element on a toothing of the base element. As a result, the displacement of the axis of rotation can be reproduced by simple kinematics and is thus advantageously supported. The toothing of the base element can be designed in a simple manner as a linear toothing, such as a toothed rack, which is arranged or formed on the base element.

It is also advantageous if a mounting base is provided for mounting the two safety devices. Structurally, it can be advantageously provided that the mounting base has an overlapping housing for both catch devices, which is formed by a first housing half and a second housing half, with at least the catch elements and the release element being arranged in the housing.

The housing in which the catch element is securely mounted is simply and advantageously formed. Furthermore, the connecting link can be designed in a simple manner in terms of manufacturing technology.

In a particularly preferred variant, at least one half of the housing is connected directly to a wall surface of the frame. However, this is not absolutely necessary, but merely a design option.

In a further preferred embodiment variant of the invention, the holding element has a holding part which is attached to the base part and can have a U-shaped cross-sectional geometry and a holding bolt, the U then being dimensioned such that the clear width of the U is greater than the Width B of the housing is. This ensures in a simple and advantageous manner that the retaining bolt can engage in the notch of the catching element without any interfering contours.

In a further preferred embodiment variant of the invention, at least one of the holding elements has at least one adjusting device. As a result, the adjustment of the position of the screen relative to the frames in the vertical and/or horizontal direction and/or in the inclination is ensured in a structurally simple and advantageous manner.

In a further preferred embodiment of the invention, the catch element can have a semicircular recess into which a geometrically congruent, circularly shaped end of the guide element of the force accumulator, in particular a spring device, engages. This creates a swivel joint with which the spring device is in an operative connection with the catch element. Due to the swivel joint, the spring device advantageously acts on the catch element at all times without a bending moment.

In a further preferred embodiment of the invention, the two holding elements can be combined by a continuous—preferably one-piece—base part to form a holding module, with the two holding parts being fastened to the continuous base part. The continuous, one-piece base part results in an advantageously simplified assembly of the holding elements combined in this way to form the holding module. The two retaining bolts are preferably vertically spaced one above the other.

According to the method according to claim 14, the panel is fastened by means of a single attachment movement, the two safety devices being triggered one after the other at different times and engaging with at least one retaining element, in particular the two retaining bolts.

According to the method according to claim 15, the safety catches are disengaged separately in order to release the at least one retaining element, in particular the two retaining bolts.

The methods therefore support the advantageous idea that, from a structural point of view, only one coupling has to be implemented for locking but no kinematic coupling for releasing, which would make the construction of the arrangement from two safety gears significantly more complex.

Figur 1:

eine räumliche Ansicht eines Abschnitts bzw. eines Teils eines Schubkastens mit einer erfindungsgemäßen Anordnung aus zwei Fangvorrichtungen für eine Blende des Schubkastens;

Figur 2:

eine andere - im Bezug auf den Schubkasten mehr von innen her gerichtete - räumliche Ansicht des Schubkastenteils aus Fig. 1;

Figur 3:

eine Seitenansicht des Schubkastenteils aus Fig. 1 und 2;

Figur 4:

eine Anordnung aus Fangvorrichtungen mit zwei Fangvorrichtungen an einer Montagebasis und mit zwei Halteelementen an einer Blende in einer Seitenansicht;

Figur 5:

eine Seitenansicht der Elemente aus Fig. 4 mit an den Halteelementen verriegelten Fangvorrichtungen, wobei ein Blech der Montagebasis ausgeblendet worden ist;

Figur 6:

eine weitere Seitenansicht der Elemente aus Fig. 5 während eines Beginns eines Entriegelns der oberen Fangvorrichtung;

Figur 7:

eine weitere Seitenansicht der Elemente aus Fig. 5 und 6 während eines im Vergleich zu Fig. 6 weiter fortgeschrittenen Stadiums des Entriegelns der oberen Fangvorrichtung;

Figur 8:

eine weitere Seitenansicht der Elemente aus Fig. 5 bis 7 nach einem vollständigen Entriegeln der oberen Fangvorrichtung mit noch wirkendem Betätigungswerkzeug;

Figur 9:

eine weitere Seitenansicht der Elemente aus Fig. 5 bis 9 nach einem vollständigen Entriegeln der oberen Fangvorrichtung, wobei das Betätigungswerkzeug entfernt wurde, so dass sich ein Lösehebel verschwenkt hat;

Figur 10:

eine weitere Seitenansicht der Elemente aus Fig. 5 bis 9 nach einem vollständigen Entriegeln der oberen Fangvorrichtung, und dem Beginn einer Entriegelung der unteren Fangvorrichtung;

Figur 11:

eine weitere Seitenansicht der Elemente aus Fig. 5 bis 10 nach einem vollständigen Entriegeln der unteren Fangvorrichtung;

Figur 12:

eine weitere Seitenansicht der Elemente aus Fig. 5 bis 11 nach einem vollständigen Entriegeln der beiden Fangvorrichtungen und einem Abnehmen der Blende;

Figur 13:

eine weitere Seitenansicht der Elemente aus Fig. 5 bis 12 nach einem Ansetzen der Blende und beim Beginn der Verriegelung der beiden Fangvorrichtungen an den Halteelementen der Blende;

Figur 14:

eine weitere Seitenansicht der Elemente aus Fig. 13 während eines Auslösens des Verriegelns der unteren Fangvorrichtung an dem unteren Halteelement der Blende und die untere Fangvorrichtung den Lösehebel der oberen Fangvorrichtung kontaktiert;

Figur 15:

eine weitere Seitenansicht der Elemente aus Fig. 14 während eines späteren Stadiums des Verriegelns der beiden Fangvorrichtungen an den Halteelementen der Blende, und in dem ein Auslösen des Verriegeins der oberen Fangvorrichtung an dem oberen Halteelement der Blende erfolgt;

Figur 16:

eine isometrische Ansicht der Befestigungsvorrichtung mit den beiden Fangvorrichtungen an einer Montagebasis und den Haltelementen der Blende;

Figur 17:

eine isometrische Ansicht der Befestigungsvorrichtung mit den beiden Fangvorrichtungen an einer im Vergleich zu Fig. 16 nur teilweise dargestellten Montagebasis und den beiden Haltelementen der Blende;

Figur 18:

eine Explosionsansicht der Befestigungsvorrichtung mit den beiden Fangvorrichtungen an einer Montagebasis und den beiden Haltelementen der Blende;

Figur 19:

eine vorteilhafte Ausgestaltung einer Befestigungsvorrichtung mit einer einzelnen Fangvorrichtung zum Befestigen einer weniger hohen Blende eines Schubkastens an einer rechten oder linken Zarge;

Figur 20:

eine räumliche Ansicht der Befestigungsvorrichtung aus Fig. 19;

Figur 21 bis 25:

ein Befestigen einer einzelnen Fangvorrichtung der Befestigungsvorrichtung aus Fig. 19 und 20 an den Halteelementen in mehreren Schritten;

Figur 26:

eine Explosionsansicht des Halteelements der Befestigungsvorrichtung aus Fig. 19; und

Figur 27

in a) eine Seitenansicht eines Haltemoduls, in dem zwei Halteelemente zusammengefasst sind; in b) eine erste räumliche Ansicht des Haltemoduls aus Fig. 27a und in c) eine weitere räumliche Ansicht des Haltemoduls aus Fig. 27a.

The invention is explained in more detail below with reference to the drawing using exemplary embodiments, with further advantages of the invention also becoming clear. It should be emphasized that the exemplary embodiment discussed below is not intended to describe the invention conclusively, but that variants and equivalents that are not shown can also be implemented and are covered by the claims. Indefinite articles such as "a" are not to be understood as a numeral, but - unless otherwise defined - in the sense of "at least one". It shows:

Figure 1:

a spatial view of a section or part of a drawer with an inventive arrangement of two catch devices for a panel of the drawer;

Figure 2:

Another three-dimensional view of the drawer part, which is directed more from the inside in relation to the drawer 1 ;

Figure 3:

a side view of the drawer part 1 and 2 ;

Figure 4:

an arrangement of safety gears with two safety gears on a mounting base and with two holding elements on a panel in a side view;

Figure 5:

a side view of the elements 4 with safety gears locked on the holding elements, wherein a metal sheet of the mounting base has been blanked out;

Figure 6:

Another side view of the elements figure 5 during beginning of unlatching of the upper safety gear;

Figure 7:

Another side view of the elements figure 5 and 6 during a compared to 6 more advanced stage of unlocking the upper safety gear;

Figure 8:

Another side view of the elements Figures 5 to 7 after a complete unlocking of the upper safety gear with the operating tool still active;

Figure 9:

Another side view of the elements Figures 5 to 9 after a full unlocking of the upper safety gear with the operating tool removed so that a release lever has pivoted;

Figure 10:

Another side view of the elements Figures 5 to 9 after a complete unlocking of the upper safety gear, and the beginning of unlocking of the lower safety gear;

Figure 11:

Another side view of the elements Figures 5 to 10 after a complete unlocking of the lower safety gear;

Figure 12:

Another side view of the elements Figures 5 to 11 after a complete unlocking of the two safety gears and a removal of the cover;

Figure 13:

Another side view of the elements Figures 5 to 12 after positioning the screen and at the beginning of the locking of the two safety catches on the retaining elements of the screen;

Figure 14:

Another side view of the elements 13 during a triggering of the locking of the lower safety gear on the lower retaining element of the bezel and the lower safety gear contacts the release lever of the upper safety gear;

Figure 15:

Another side view of the elements 14 during a later stage of the locking of the two safety gears on the retaining elements of the screen, and in which there is a release of the locking of the upper safety gear on the upper retaining element of the screen;

Figure 16:

an isometric view of the fastening device with the two safety catches on a mounting base and the retaining elements of the panel;

Figure 17:

an isometric view of the attachment device with the two safety gears on one compared to 16 only partially shown mounting base and the two retaining elements of the panel;

Figure 18:

an exploded view of the fastening device with the two catches on a mounting base and the two retaining elements of the panel;

Figure 19:

an advantageous embodiment of a fastening device with a single catching device for fastening a lower panel of a drawer on a right or left frame;

Figure 20:

a spatial view of the fastening device 19 ;

Figure 21 to 25:

fastening a single safety gear of the fastening device 19 and 20 on the holding elements in several steps;

Figure 26:

Figure 12 shows an exploded view of the retaining element of the fastening device 19 ; and

figure 27

in a) a side view of a holding module in which two holding elements are combined; in b) a first three-dimensional view of the holding module Figure 27a and in c) a further three-dimensional view of the holding module Figure 27a .

Terms such as "top", "bottom", "right" or "left" refer to the respective position shown in the figures and are to be understood or considered relative to movements - in particular rotations - of the elements shown in space.

In 1 and 2 each half of a drawer 1 is shown in different views. The drawer 1 has a panel 2, a base 6 (only in 2 to recognize) and preferably a rear wall 3 on. The drawer 1 also has a first frame 4 on the left and a second frame on the right (not shown here).

The frame 4 shown has a fastening device 10 with two catch devices 100, 200 arranged vertically one above the other. The second frame of the drawer 1, which is not shown but is preferably provided, can be constructed in the same way. For the sake of simplicity, however, only one of the frames 4 is shown and described below.

Is realized - see also 4 and 5 - A fastening device 10 for fastening a panel 2 of a drawer 1 per frame 4, the fastening device 10 having at least one or two one-piece or multi-piece holding element(s) 101, 201 which can be arranged on the side of the panel and two catch devices 100, 200 which can be arranged on the side of the frame. The preferably two Holding elements 101, 201 - see 4 - can be formed separately and attached individually to the panel 2 or connected to one another and fixed to the panel 2 as an overarching unit (see figure 27 ). They are preferably arranged or formed vertically one above the other at a distance from one another.

The catch devices 100, 200 can be locked on the corresponding holding element(s) 101, 201 in order to connect the panel 2 to the respective frame (called locking position, see figure 5 ). From this locked position, they can be released again (called release position, see 11 or then 12) to detach the panel 2 from the respective frame 4 again.

The frames 4 can, for example, be made of a metallic material--for example sheet metal--and have a cavity into which the catch devices 100, 200 of the fastening device 10 for the panel 2 of the drawer 1 are used. However, these catch devices 100, 200 can also be arranged on the frame 4 in a different way. The respective holding element 101, 201 is arranged on the panel and fixed or adjustable, for example screwed. In the catching position, it can also engage in the cavity of the frame 4, which is preferably aligned at right angles to the panel.

In order to be able to actuate the respective safety catch 100, 200, in particular to be able to unlock and release it, the frame 4 can each have a cutout 5a, 5b that can be covered by a cover or an overlapping cutout (not shown), through which the in the respective frame 4 safety gears 100, 200 used are accessible and operable from the outside.

The two catch devices 100, 200 are mechanically and functionally coupled to one another for locking and reaching the locking position, in such a way that they can be locked together on the respective holding elements 101, 201 with a single application movement of the panel. On the other hand, the two safety gears 100, 200 are not mechanically functionally coupled to one another in order to unlock and reach the release position, so that unlocking takes place by actuating the two safety gears 100, 200 separately.

This design is described further below using a preferred exemplary embodiment. For this it is first necessary to explain the function of a fastening device 10 with only one safety device.

19 shows a fastening device 10 for fastening the panel 2 of a lower drawer than in FIG 1 on the frame 4, which is then correspondingly less high. The fastening device 10 has a retaining element 101 on the panel side and a single catch device 100 on the frame side. This catch device 100 has a catch element 116 arranged pivotably on the respective frame.

The catching element 116 can be acted upon by a force accumulator, in particular a spring device 104, and can be moved between a release position and a catching position and holds the retaining element 101 of the panel on the frame 4 in the catching position.

The safety gear 100 of 19 has a mounting base with a base element 102 . This base element 102 can be formed by an element of the frame 4 itself. However, it can also be formed by at least one separate element which is fixed to the frame 4 , for example inserted into a cavity of the frame 4 and fixed to an element of the frame 4 . The base element 102 can be designed as at least one plate. The base element 102 is used for arranging and also as an abutment for an energy accumulator. This force accumulator is preferably designed as a spring device. Therefore, the term "spring device" is used below, which includes a force accumulator of a different type below - but also in the claims.

The spring device 104 has a compression spring here. Alternatively, the spring device 104 can also have another spring with a different design. The spring device 104 also has a guide element 105 . The guide element 105 is slidably mounted in a holding bracket 103 here. The guide element 105 can have a stop 106 for the compression spring 104 . The compression spring of the spring device 104 is arranged between the holding tab 103 and the stop 106 .

As a further addition to the mounting base or as the mounting base in general, the safety catch 100 can have a housing 108 with a first, right-hand housing half 107a and a second, left-hand housing half 107b running parallel thereto.

The housing halves 107a, 107b are connected to one another here (here with rivets) and thus form the housing 108. The housing halves 107a, 107b are here a metallic flat material, such as a steel sheet. Alternatively, the housing halves 107a, 107b can also be made of a different material, such as aluminum or a plastic or the like. A gap or slot can be formed between the housings, which is used to accommodate essential functional elements of one or more Figures 1 to 18 the two safety gears 100 and 200 is used.

The mounting base - here the housing 108 with the base element 102 - can have at least one link 109 in which a guide cam 110 is movably mounted. Here, each of the housing halves 107b, 107a has a link 109 in which the guide cam 110 is movably mounted. Furthermore, one, here the second, left housing half 107b can have a recess 111. A curved elongated hole 112 is visible through this recess 111, which hole is made in the first, right-hand housing half 107a.

Both housing halves 107a, 107b each have a groove-like cutout 114a, 114b that is geometrically congruent with the other cutout. The cutout 114a, b is in a locking position of the safety gear 100 by a retaining bolt 115 of the retaining element 101 in a horizontal position (see 19 ) cracked down. Furthermore, the catching element 116 engages in the cutout 114 at least in the locking position.

In the 19 the holding element 101 is also shown in an exemplary configuration. The holding element 101 has a base part 117 with which the holding element 101 is fastened to the panel 2 of the drawer 1 . The holding element 101 also has a holding part 118 which is fixed to the base part 117 and has a U-shaped cross-sectional geometry. The U is dimensioned such that the clear width of the U is greater than the width B of the housing 108. The holding part 118 has two indentations 119a, 119b arranged in pairs, which when locking or after locking the aperture in the horizontal direction lead to the housing 108 or set. The respective holding element 101 can have an adjusting device 120 in order to adjust the position of the panel 2 relative to the frames 4a, 4b in the vertical direction.

If two of the safety devices 100, 200 are arranged one above the other, two such retaining elements 101, 201 can be arranged one above the other on the screen 2 or one retaining element (101) with two retaining bolts ( Fig.27 ).

In 20 the safety gear 100 is shown without the left housing half 107b. As a result, the catching element 116 is easily recognizable. The catch element 116 has teeth 121 . The base element 102 also has teeth 122 . Both toothings 121, 122 mesh with one another and are thus in an operative connection with one another. The teeth 121, 122 are preferably involute teeth. Other toothings are also conceivable. The central planes of the catch element 116, the toothing of the base element 102 and the compression spring 104 are all in one plane in the longitudinal direction of the frame, which is why the width B of the housing with its parallel housing halves can be less than 8 mm and, in particular, all forces can be dissipated in one plane if possible without generating a tilting moment.

The catching element 116 has a semicircular recess 123 into which a geometrically congruent, circularly shaped end 124 of the guide element 105 of the spring device 104 engages. This creates a pivot. As a result, the spring device 104 is in an operative connection with the catch element 116 . Due to the swivel joint, the spring device 104 advantageously acts on the catch element 116 with as little bending moment as possible.

The catching element 116 also has a groove-like incision 125 . The boundaries of the incision 125 are preferably curved—parallel to one another. The dimension of the incision 125 is selected such that the retaining pin 115 of the retaining element 101 can reach through the incision 125 in the horizontal direction at any point with virtually no play. A hook portion 127 is formed in the catching element 116 through the incision 125 .

Also shown is the guide cam 110, which is guided in the link 109 (not shown here) of the left-hand housing half 107b (also not shown here). Such a guide cam 110 is guided in the link 109 of the right-hand housing half 107a (not shown here). Between the two Guide cam 110 can be formed as a cylindrical shaft section 126 . The catch element 116 can preferably be mounted pivotably on the axle section 126 .

A drive geometry 113 can also be seen, which is introduced into the catch element in the area here in the form of a cross slot. The drive geometry 113 is used in conjunction with a corresponding operating tool - here a Phillips screwdriver - as an unlocking and return option for the catch element 116. The tool penetrates the drive geometry 113 and can at least engage in the slot 112 of the first, right-hand housing half 107a.

The elongated hole 112 accordingly serves as a free space for a screwdriver tip, so that there is a secure form fit between the drive geometry 113 and the screwdriver tip. Drive geometries 113 other than the cross slot shown here are also conceivable.

In the Figures 21 to 25 a locking process of the safety catch 100 for locking the shutter is shown in different stages or steps that follow one another in time.

In 21 the safety device 100 is shown without the frame 4 surrounding it, but with the holding element 101 in a basic position in which the safety device 100 is open.

In 22 the catching device 100 is shown in a position in which the retaining bolt 115 engages in the cutout 114a, 114b, which the two housing halves 107a, 107b each form and comes into contact with the catching element 116. The impressions 119a, 119b of the holding part 118 have placed over the two housing halves 107a, 107b (only 107a shown here), so that the holding pin 115 engages centrally in the cutout 114a, 114b. In its representation, the holding part is cut out on one of its legs, so that the holding pin 115 is visible.

The catch element 116 has its basic position 21 left and has completed a partial clockwise rotation about the axis section 126 as a result of the movement of the retaining bolt 115 on the catching element 116 and has shifted the line of action of the spring force to such an extent that the catching element 116 rotates automatically, with the spring force of the spring element 104 or that in the Compression spring stored force has supported the movement of the retaining bolt 115 in the cutout 114a, 114b. This movement is possible because the central axis of the retaining pin 115 acts on the catch element 116 at a vertical distance from the current position of the central axis of the axle section 126 and thereby exerts a torque on the catch element 116 which acts in a clockwise direction.

The toothing 121 of the catching element 116 has rolled a bit on the toothing 122 of the base element 102 . Due to the rolling movement, the axle section 126 - and thus the current axis of rotation of the catching element 116 - has moved a little way vertically downwards via the guide cam 110 which is integrally formed on the axle section 126 and which is displaceably guided in the connecting link 109.

In 23 the catching device 100 is shown in a position in which the retaining bolt 115 engages in the cutout 114a, 114b and in which the notch 125 or the hook section 127 of the catching element 116 engages with the retaining bolt 115. The catch element 116 has the spring force of the spring element 104 or the force stored in the compression spring compared to 22 completed a further partial rotation around the axis section 126 in the clockwise direction.

The toothing 121 of the catch element 116 has rolled a further distance on the toothing 122 of the base element 102 . Due to the rolling movement, the axle section 126 - and thus the current axis of rotation of the catch element 116 - has moved over the guide cam 110 which is integrally formed on the axle section 126 and which is guided in the link 109 so that it can move, compared to 22 moved a little further vertically down.

In 24 the safety gear 100 is shown in a position in which the retaining bolt 115 engages in the cutout 114a, 114b and in which the notch 125 or the hook section 127 of the catch element 116 has pulled the retaining bolt 115 and thus the retaining element 101 further into the cutout 114a, 114b. As a result, the panel 2 (not shown here) is pulled further to the respective frame 4a, 4b of the drawer 1. The catch element 116 has the spring force of the spring element 104 or the force stored in the compression spring in turn compared to 23 completed a further partial rotation around the axis section 126 in the clockwise direction.

The toothing 121 of the catch element 116 has rolled a further distance on the toothing 122 of the base element 102 . Due to the rolling movement, the axle section 126 - and thus the current axis of rotation of the catch element 116 - has moved over the guide cam 110 which is integrally formed on the axle section 126 and which is guided in the link 109 so that it can move, compared to 23 moved a little further vertically down.

In 25 Finally, the safety gear 100 is shown in a locking end position in which the retaining bolt 115 engages in the cutout 114a, 114b and in which the retaining bolt 115 lies at the bottom of the incision 125. As a result, the panel 2 (not shown here) has come to rest against the respective frame 4a, 4b of the drawer 1 and is locked against unintentional release.

The catch element 116 has the spring force of the spring element 104 or the force stored in the compression spring compared to 8 completed a further partial rotation around the axis section 126 in the clockwise direction up to a possible end point.

The toothing 121 of the catch element 116 has rolled a further distance on the toothing 122 of the base element 102 . Due to the rolling movement, the axle section 126 - and thus the current axis of rotation of the catch element 116 - has moved over the guide cam 110 which is integrally formed on the axle section 126 and which is guided in the link 109 so that it can move, compared to 9 moved a little further vertically down to the lower end point of link 109.

As a result, the current axis of rotation of the catch element 116 and/or the central axis of the axle section is just below the plane of action A or on the plane of action of the retaining bolt 115 in the cutout 114a, 114b. As a result, only a very small or no torque can be exerted on the catch element 116 by an opening movement of the drawer 1, which is accompanied by the exertion of force on the panel 2, so that overcoming the locking solely by an opening movement of the drawer 1 is advantageous, so to speak is excluded.

Furthermore, the catch element 116 has come to rest against the base element 102, so that further rotation of the catch element 116 in the clockwise direction is not possible.

The retaining bolt 115 is thus locked by a defined displacement of the axis of rotation or the central axis of the axle section 126 on which the catch element 116 is pivotably mounted. The displacement is defined by the guide cam 110 and the link 109 and is supported by the rolling of the teeth 121 of the catch element 116 on the teeth 122 of the base element 102 .

The safety catch 100 can only be unlocked by rotating the catch element 116 counter to the locking direction of rotation, which is initiated by a tool inserted into the drive geometry 113 . In doing so, the spring force of the spring element 104 must be overcome. Instead of the tool used, the drive geometry can also be designed in such a way that it can be actuated by hand without tools.

In 26 the safety gear 100 is shown without the holding element 101 in a three-dimensional exploded view. Shaft section 126, on which catch element 116 is pivotably mounted, is clearly visible, as are the two guide cams 110 formed in one piece with shaft section 126.

In the high drawer 1 with the high panel 2 and the high frame 4 is - in the illustrated embodiment - this structure Figures 19 to 25 taken over in principle at the two safety gears 100, 200.

Corresponding elements of the two safety devices 100, 200 differ in the first digits of the reference symbols, which begin with the "1" in the case of the lower safety device 100, while they begin with the "2" in the case of the upper safety device 200. As far as elements for both safety devices 100, 200 are used, they are denoted by a "1".

Thus, the housing 108 with the two housing halves 107a, 107b can be provided overlapping for both safety gears 100 and 200 (see 18 as well as 4 and 5). The base elements 102, 202 can each be provided separately for each of the safety devices 100, 200.

A preferred structure of the upper and lower safety devices 200, 100 is described below. The role of the upper safety device 200 can also be interchanged with that of the lower safety device 100 . For this it is only necessary to implement a mirrored configuration of the safety gears.

The two safety devices 100, 200 are also designed and arranged here in such a way that the design of the lower safety device 100 largely corresponds in principle to the orientation of the Figures 19 to 25 corresponds, so that when locking, the catch element 116 is rotated in such a way that the incision 125 overlaps the retaining bolt 115 from top to bottom, while the structural design of the upper catch device 200 is such that the incision 225 in the upper retaining element 216 catches the upper retaining bolt 215 when Lock overlaps from bottom to top. In this way, the functional coupling when locking is structurally particularly easy to implement. The arrangement shown could also be rotated 180° and used upside down to lock the diaphragm. Below is the function of the arrangement of two safety devices 100, 200 in more detail with reference to FIG Figures 5 to 18 described.

figure 5 shows the two catch devices 100, 200 each in the locking end position, so that the panel 2 is securely fastened to the respective frame 4.

The respective retaining bolt 115, 215 protrudes into the respective cutout 114, 214 (see also 18 ). As a result, the panel 2 (not shown here) has come to rest against the respective frame 4a, 4b of the drawer 1 and is locked against unintentional release.

Because the current axis of rotation of the respective catch element 116, 216 is just outside - here below below and above above - the respective plane of action A, A' or on the plane of action of the retaining bolt 115, 215 in the cutout 114a, 114b. As a result, an opening movement of the drawer 1, which is accompanied by the exertion of force on the panel 2, only a very small or no torque can be exerted on the respective catch element 116, 216, so that the locking can be overcome solely by an opening movement of the drawer 1 is advantageously virtually impossible.

The structure of the two catch devices 100, 200 of the fastening device 10 differs on the one hand by the orientation of the catch washers 116, 216 and on the other hand also by some other structural details.

Here the structure of the lower safety gear 100 corresponds to that of FIG Figures 19 to 25 almost complete. However, an edge recess 130 is provided on the upper edge of the lower catch element 116 in the installed position relative to the base 6 of the drawer 1 . This has a trapezoidal shape here, for example.

On the one hand, the upper safety gear 200 has the opposite functional orientation to the lower safety gear, as already described.

A release element 230 (a kind of "release lever") is then assigned to the catch element 216 of one--here the upper catch device 200.

The release element 230 is below the upper catch element 216 quasi between the lower catch element 116 and the upper catch element 216. The release element 230 has a drive geometry or actuating contour 231 for applying a operating tool. The actuating tool can be configured as a screwdriver with a torque transmission contour corresponding thereto.

In a preferred embodiment, the release element 230 is located between the two housing halves 107a, 107b and between the two catch elements 116, 216. The torque transmission contour is accessible through an arcuate connecting link 232 in the housing 208 (preferably in both housing halves). The gate 232 is designed in such a way that it allows the actuating tool to be attached, so that the release element 230 can be displaced in the gate 232 with the actuating tool.

The release element 230 and the upper catch element 216 are matched to one another in such a way that the upper catch element 216 can be moved with the release element 230 from the locking position into an unlocking position by actuating the release element 230, in particular as part of a superimposed linear and pivoting movement. The release element 230 bears against the catch element 216 with an entrainment contour 233 .

figure 5 , 6 and 7 illustrate how the release element 230 can be moved from the right to the left with an actuating tool (not shown here) in the link 232, whereby the catch element 216 is moved downwards on its toothing 121 on the corresponding toothing 122 of the base element 212 and in doing so is finally also pivoted clockwise until the notch 225 of the catch element 216 finally releases the retaining bolt 216 of the upper retaining element 201 ( figure 5 , 6 , 7 and 8th and 18 ). The upper safety gear 200 has thus been placed in the release position (see Fig, 8 ).

Then the lower catch element 116 is moved at its drive contour 113 with an actuating tool from the locked position ( 8 ) moves in an analogous manner with a separate further movement and actuation in an unlocked position. Here, the catching element 116 is pivoted counterclockwise and moves upwards on the teeth 121 until the incision 125 of the lower catching element 116 finally catches the retaining bolt 116 of the lower capture element 116 releases ( Figures 8 to 11 ). This means that the lower safety gear 100 and the upper safety gear 200 have all been placed in the release position (see 11 ).

Thus, the two safety gears 100, 200 have been mechanically and functionally completely independently of one another by separate actuation by separate actuation from the locking position into the release position.

In terms of claim 1, the two safety gears 100, 200 are hereby in a preferred and advantageous—but not necessarily so implemented—design for unlocking not mechanically functionally coupled to one another so that unlocking takes place by actuating the two safety gears separately.

On the one hand, this has the advantage that significantly lower forces are required for releasing than in an embodiment in which the two safety gears 100, 200 are moved together into the release position by just a single actuation, since in the latter case both safety gears can be locked against the effect of the two spring devices 104, 204 would have to be released. If the two safety devices 100, 200 are actuated separately, however, the release takes place at different times against the action of only one of the spring devices 104, 204.

On the other hand, it is advantageous that, from a structural point of view, no corresponding kinematic coupling has to be implemented, which would make the construction of the arrangement of two safety gears significantly more complex.

The release element 200 can be arranged on the upper catch element 216 so that it can be moved to a limited extent—in particular pivotably. This is achieved here in that one end - in this case the upper end - of the release element 230 engages in a puzzle-like manner with a part-round head as a driving contour 233 in a correspondingly shaped recess 234 of the catch element 216, so that the release element 230 can be locked over a limited angle relative to the upper catch element 216 can be pivoted on the upper catch element 216 . In this case, a spring 235 - for example, a V-shaped Leaf spring - located between the upper catch member 216 and the release member 200, with which the lower end of the release member is pushed away from the upper end of the catch member 216.

In the release position Fig.9 After the actuating tool has been removed, the release element 130 has pivoted downwards essentially due to the action of the spring 235 . In the release position 12 a lower projection 236 of the release element 230 of the upper catching device 200 protrudes into the edge recess 130 of the lower catching element 116 . In this way, a form fit between the release element 230 of the upper safety device 200 and the safety element 116 of the lower safety device 100 is realized.

In this way, the catch devices 100, 200 are mechanically and functionally coupled to one another for locking, so that they can be locked together on the respective holding elements with a single actuation--here in the sense of a single attachment movement of the panel 2.

This is because the design is such that the lower catch element 116 is automatically pivoted into the locking position by the lower spring element 104 by releasing the lower retaining bolt 115 when the panel 2 is attached. The form fit between the lower catching element 116 and the release element 230 also triggers a rotation via the latter on the upper catching element 216, which triggers the spring 205 and guides it into the locking position.

This is possible because the upper catch element 216 is designed in such a way that the upper retaining bolt 215 can be guided into a position corresponding to its locking position in the cutout 214 of the housing 108 (see FIG 13 ) without the upper catch element 216 being touched by it. For this purpose, the outer peripheral contour of the upper catching element 216 has been designed in such a way that the upper catching element also lies at a distance from the upper retaining bolt 216 in this position. The upper holding pin 215 can therefore not actuate the catching element 216 and trigger a locking process.

On the other hand, inserting the lower retaining bolt 115 into the lower safety gear at this insertion depth triggers the lower safety gear 100 ( 14 ). Furthermore, corresponding retaining lugs 237 are formed on at least one of the housing halves 107a, 107b and protrude into the cutouts (114, 214). The retaining lugs 237 can be used to pre-position the retaining bolts 115, 215 and thus the panel 2 on the frame 4 accordingly, so that, for example, the panel 2 can be prevented from falling down after the safety catches 100, 200 have been unlocked. 14 shows another side view of the elements 13 during a triggering of the locking of the lower safety catch 100 on the lower holding element 101 of the screen 2. 15 illustrates how the lower safety gear 100 is already in the locked state, with the lower safety gear 116 at the recess 130 having moved the projection 136 of the release element 230 of the upper safety gear, so that the locking of the upper safety gear 200 on the upper holding element is also triggered 201 of aperture 2 has taken place.

To adjust the position of the screen 2 relative to the frames 4a, 4b in the vertical direction, one or both of the respective holding elements 101, 201 can have one of the vertical adjustment devices 120 described. In this way, tolerances can easily be compensated for, in particular with regard to the relative position of the two safety devices 100, 200 and their elements.

after the Figures 27a - 27c it is also possible to combine the two holding elements 101, 201 into a holding module 131 by means of a continuous base part 117, that is to say in one piece. The two holding parts 118, 218 are then attached to the continuous base part 117, which can be integrated into a panel. The continuous, one-piece base part 117 results in an advantageously simplified assembly of the holding elements 101, 201 combined in this way to form the holding module 131.

Reference List

1

drawer

2

cover

3

back panel

4

frame

5a, 5b

cutout

6

floor

10

fastening device

100, 200

safety gear

101, 201

holding element

102, 202

base element

103, 202

retaining tab

104, 204

spring device

105.205

guide element

106, 206

attack

107a, 107b

case half

108

housing

109, 209

backdrop

110,210

guide cam

111

recess

112

Long hole

113

drive geometry

114a, 114b, 114, 214

cutout

115, 215

retaining bolts

116, 216

catch element

117, 217

base part

118, 218

holding part

119a, 119b

imprint

120, 220

adjusting device

121, 221

gearing

122, 222

gearing

123

recess

124

molded end

125

incision

126

axis section

127

hook section

130

Recess catch element

131

holding module

230

release element

231

Drive geometry/actuating contour

232

backdrop

233

driving contour

234

recess

235

leaf spring

236

head Start

237

retaining lugs

A

effective level

B

broad

X,YZ

axes

Claims (15)

1. Securing device (10) for securing a panel (2) of a drawer (1) to a frame (4a, 4b), wherein the securing device (10) has one retaining element (101, 201) which can be arranged on the panel side or two retaining elements (101, 201), and at least two catching devices (100, 200) which can be arranged on the frame side, wherein the catching devices (100, 200) are mechanically coupled together in a functionally effective manner for locking purposes such that they can be locked together to the at least one retaining element (101, 201) or to two retaining elements (101, 201) in a locking position, characterized in that the two catching devices (100, 200) are placed from the locking position into the release position in a mechanically functionally complete manner independently from each other by separate actuations, so that the two catching devices (100, 200) are mechanically functionally decoupled for unlocking.
2. Securing device (10) according to claim 1, characterized in that at least one catching device (100, 200) has a catching element (116, 216) which is displaceable and/or pivotably mounted about an axis of rotation, can be acted upon by an energy storage device with force and can be moved back and forth between a release position and a catching position, wherein the respective catching element (116, 216) is designed to hold the at least one retaining element (101, 201) on the frame in the catching position.
3. Securing device (10) according to claim 1 or 2, characterized in that on one or both catching devices (100, 200) a locking of the respective catching element (116, 216) in the catching position takes place due to a local displacement of an axis of rotation of the catching element (116, 216).
4. Securing device (10) according to claim 2 or 3, characterized in that a release element (230) is associated with the catching element (216) of the at least one catching device (200), preferably such that the release element (230) is positively coupled to the catching element (216) of the one catching device (200) both during unlocking and during locking, and in that the release element (130) is positively coupled to the catching element (116) of the other catching device (100) only during locking.
5. Securing device (10) according to one of the preceding claims, characterized in that, in order to displace the axes of rotation of the two catching elements (116, 216), an approximately linear displacement of an axis section (126, 226) takes place in each case, which is pivotably mounted in or with the catching element (116, 216).
6. Securing device (10) according to claim 4, characterized in that the displacement of the respective axis of rotation is defined by a guide cam (110, 210) and at least one slotted link (109, 209) of the respective base element (102), preferably in such a way that the respective guide cam (110, 210) is in extension of the axis of rotation of the catching element (116, 216).
7. Securing device (10) according to one of the preceding claims, characterized in that the direction of movement of the axis of rotation of the catching element (116), during its displacement, is perpendicular or substantially perpendicular to a direction of movement of the retaining element (101) when the retaining element (101) is locked to the catching device (100).
8. Securing device (10) according to one of the preceding claims, characterized in that the displacement of the respective axis of rotation of the catching element (116) is defined by a respective mechanical control device which links the displacement of the axis of rotation to the pivoting position of the catching element (116), wherein the mechanical control device is preferably formed by corresponding gearings.
9. Securing device (10) according to one of the preceding claims, characterized in that a mounting base is provided for mounting the two catching devices, wherein the mounting base preferably comprises a housing (108) formed by a first housing half (107a) and a second housing half (107b), wherein at least the catching elements (116, 216) and the release element (230) are held in the housing.
10. Securing device (10) according to one of the preceding claims, characterized in that at least two retaining elements (101) can be firmly connected to the panel (2) and each have at least one retaining bolt (115, 215).
11. Securing device (10) according to one of the preceding claims, characterized in that the housing (108) has groove-like cutouts (114a, 114b) through which the respective retaining bolts (115) of the at least one retaining element (101, 201) engage in a locking position of the catching devices (100).
12. Securing device (10) according to one of the preceding claims, characterized in that one or both of the respective retaining elements (101, 201) have a vertical adjusting device (120).
13. Securing device (10) according to one of the preceding claims, characterized in that two of the retaining elements (101, 201) are combined by a base part (117) to form a retaining module (131), wherein the two retaining parts (118, 218) are secured to the base part (117).
14. Method for securing a panel (2) to a frame (4) with a securing device (10) according to one of the preceding claims, characterized in that the securing of the panel (2) is effected by means of a single application movement, wherein the two catching devices (100, 200) are released in succession with a time offset and come into engagement with at least one retaining element (101, 201), in particular with two retaining bolts (115, 215).
15. Method for releasing a panel (2) from a frame, wherein the panel (2) is secured to the frame (4) with a securing device (10) according to one of the preceding claims, characterized in that the catching devices (100, 200) are disengaged separately for release from the at least one retaining element (101, 201), in particular two retaining bolts (115, 215).

Images