EP2451313B1 - Catch fitting for a pull-out guide - Google Patents

Description

The present invention relates to a detent fitting for a drawer slide, especially for drawers, with a switching curve in which a switching element is movably mounted, wherein the switching cam has a loop-shaped portion with a detent recess, and the switching element can be latched by the force of a spring on the detent recess ,

The EP 1 845 821 discloses a closing and opening device for drawer pull-out guides, in which a latching mechanism is provided. When closing the drawer, a spring of the ejector is stretched and fixed on the locking mechanism. To unlock the locking mechanism, the drawer is pressed against the force of the spring, so that a switching element is moved in a switching cam from the locked position, to be then moved by the spring in the opening direction. In this closing and opening device is disadvantageous that the unlocking is done manually by pushing the drawer. Especially with wider drawers, where closing and opening devices are arranged on both sides, it may happen that the closing and opening device is unlocked only on one side, while on the other side, the switching element remains locked. As a result, the opening is prevented and also the components of the fitting are exposed to high forces that can lead to damage.

It is therefore an object of the present invention to provide a detent fitting for a pullout guide, which ensures a secure unlocking of the switching element.

This object is achieved with a locking fitting with the features of claim 1.

According to the invention, the latching fitting comprises a trigger by means of which the switching element can be moved out of the latching recess. As a result, the unlocking of the switching element takes place directly via a trigger and not via a large number of components which, due to tolerances, allow only a little precise positioning of the switching element. The trigger can by the relative movement move the switching element in the loop-shaped portion of the switching cam to the detent recess. In this case, optionally, the trigger and / or the detent recess be designed to be movable to effect unlocking.

In one embodiment, the trigger can be controlled by a switch, wherein the switch can activate a drive which can actuate the trigger electromechanically, electromagnetically or in another way. The switch may e.g. on the front panel of a drawer or on a stylus element, be arranged. It is also possible to detect a push-in movement of the drawer via a sensor, which then emits a signal to a controller for actuating the trigger, so that a simultaneous unlocking of the switching elements is ensured on opposite sides of the drawer. For this purpose, a sensor can detect a movement of a running rail or a component coupled to the running rail, so that then the trigger can be actuated. Another operation of the switch via a controller, due to optical, acoustic or other signals is possible.

The trigger is slidably mounted in an embodiment or pivotally mounted on the switching cam. The trigger is formed in a design as a slide which is displaceable along a receptacle on the component to the switching cam, so that a compact construction of the detent fitting is achieved. The movement of the trigger can be done via a drive, which moves the trigger back to the starting position after the triggering operation. The trigger can be designed to be pivotable, rotatable or displaceable. To drive different actuators are conceivable such. the solenoid described later with reset.

In one embodiment, the trigger forms a stop for the switching element in the starting position. This ensures that the switching element is also moved immediately upon movement of the shutter. The trigger can be arranged adjacent to a stationary projection on the switching cam, on which the detent recess is arranged.

For unlocking the switching element, the switching curve can be fixed to a holder, and the trigger is movable relative to the switching curve. Alternatively, it is also possible that the shutter is stationary and the Switching cam relative to the trigger is movable or trigger and switching cam are both movable in opposite directions.

In one embodiment, the trigger is in the opening direction of a stop and the switching curve is movable at a tensile load in the opening direction relative to the trigger. As a result, an overload protection can be provided when a drawer is loaded in the opening direction by a tensile force. Then the trigger is fixed by the stop positioned and the unlocking is done by a movement of the switching cam in the opening direction of the drawer, preferably against the force of a spring for biasing the switching cam to a starting position. By such a spring, the force can be specified for the overload trip. With a release of the switching element by a tensile force or overload, it is also possible to combine the triggering by movement of the switching cam and the trigger, i. the switching cam is moved in the opening direction and the trigger in the opposite direction. For this purpose, a corresponding sensor for detecting a tensile force or pulling movement and coupled to the sensor control for actuating the trigger can be provided.

Figur 1

eine perspektivische Ansicht eines an einer Auszugsführung montierten Rastbeschlages;

Figur 2

eine perspektivische Ansicht des Rastbeschlages der Figur 1;

Figur 3

eine Explosionsdarstellung des Rastbeschlages der Figur 2;

Figuren 4A und 4B

Ansichten der Schaltkurve mit Blick auf das Schaltelement des Rastbeschlages der Figur 2;

Figuren 5A bis 5D

mehrere perspektivische Ansichten des Bauteils mit der Schaltkurve mit Blick auf den Auslöser;

Figuren 6A bis 6D

mehrere Ansichten der Schaltkurve bei der Entriegelung des Schaltelements;

Figur 7

eine vergrößerte Ansicht des Auslösers und des Bauteils mit der Schaltkurve in Perspektive gemäß Fig. 3;

Figuren 8A bis 8D

mehrere Ansichten des Rastbeschlages bei der Entriegelung des Schaltelements;

Figuren 9A bis 9D

mehrere Ansichten des Rastbeschlages mit einem Schalter bei der Entriegelung des Schaltelements;

Figur 10

ein schematisches Schaltbild für die Steuerung der Auslösung des Rastbeschlages, und

Figur 11

eine Explosionsdarstellung eines modifizierten Rastbeschlages;

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

FIG. 1

a perspective view of a mounted on a pullout guide detent fitting;

FIG. 2

a perspective view of the detent fitting of Figure 1;

FIG. 3

an exploded view of the detent fitting of FIG. 2 ;

FIGS. 4A and 4B

Views of the switching curve with a view of the switching element of the detent fitting of FIG. 2 ;

FIGS. 5A to 5D

several perspective views of the component with the switching curve with a view of the trigger;

FIGS. 6A to 6D

several views of the switching curve in the unlocking of the switching element;

FIG. 7

an enlarged view of the trigger and the component with the switching curve in perspective according to Fig. 3 ;

FIGS. 8A to 8D

several views of the detent fitting during unlocking of the switching element;

FIGS. 9A to 9D

several views of the detent fitting with a switch in the unlocking of the switching element;

FIG. 10

a schematic diagram of the control of the release of the detent fitting, and

FIG. 11

an exploded view of a modified detent fitting;

A pullout guide 1 comprises a stationary guide rail 2 which can be mounted on a furniture body. On the guide rail 2, a running rail 3 is movably held directly or via a center rail on which a protruding activator 17 is fixed. The activator 17 can be coupled to a driver 7, which is movable along a cam guide 5 of a housing 4. The housing 4 can be fixed to the guide rail 2.

On the housing 4, a further housing 6 of a spring element is fixed. The housing 6 can be latched to a connecting piece 65, which is formed integrally with the housing 4. The driver 7 is coupled to a rod 60 which is locked with a thickened ball-head-like end portion 61 in a dome-like receptacle. The rod 60 is connected at the end opposite to the end portion 61 with a disc 62 to which one end of a spring 63 abuts. The opposite end of the spring 63 is supported on a cover 64 of the housing 6.

The driver 7 also has a boom 8, on which a coupling element 9 (see Fig. 4 ). The coupling element 9 is connected to a switching element 10, which is formed as a metallic wire having a curved End portion 11 has. The bent end portion 11 of the switching element 10 engages in a switching cam 20, which is formed integrally with a component 18.

The component 18 is displaceably mounted on a groove-shaped receptacle 19 on the housing 4. In this case, the component 18 is biased by a spring 45 into an initial position, which is fixed to a spring 48 on a holder 48 on the housing 4. An opposite spring end 47 of the spring 45 is fixed to the component 18. On the receptacle 19 of the housing 4, a bottom 12 is formed, which is spaced from the component 18 is arranged. This makes it possible for the switching element 10 formed as a wire to be moved between the base 12 and the component 18 via the switching cam 20, with the bent end portion 11 engaging in the switching cam 20. Furthermore, the bottom 12 prevents the deflection of the bent end portion 11 from the switching cam 20.

The switching element 10 can be unlocked via a trigger 30 from a locked position, wherein the trigger is coupled via a linkage 51 with a solenoid 50 for this purpose. The solenoid 50 has an internal restoring device.

The function of the switching cam 20 and the switching element 10 will be described with reference to FIGS FIG. 4 explained in more detail.

In a starting position, a drawer coupled to the running rail 3 is in a closed position and the switching element 10 is held in the switching cam 20 in such a way that it is latched. For this purpose, the bent end portion 11 is located in a detent recess 26 of the switching cam 20 and is pressed into the detent recess 26 by the force of the spring 63 via the rod 60, the driver 7 and the other coupling elements. The switching cam 20 in the housing 18 is groove-shaped and comprises a loop-shaped portion 23rd

When the drawer is to be opened from this closed position ( FIG. 4A ), this can be done by unlocking the switching element 10 by pushing the drawer in the closing direction to the furniture body out, so that the bent end portion 11 is moved against a run-on slope 28 on the cam 20, resulting in that the switching element 10 pivots is engaged and in a receptacle 27 which is arranged offset to the latching recess 26 ( FIG. 4B ). When the drawer 1 is released, the switching element 10 can now be moved back in the loop-shaped portion 23 of the switching cam 20 due to the force of the pressure-loaded spring 63 until the switching element 10 is moved into an outlet 32.

During a closing movement of the drawer, the switching element 10 is moved along the switching cam 20 in the loop-shaped portion 23 to a junction 24 which is disposed adjacent to a groove-shaped receptacle 25. In the region of the branch 24, the switching element 12 is therefore first moved into the projection 25 until a front panel of the drawer strikes the furniture body. Then, the drawer 1 is moved back to the detent recess 26 due to the force of the compression spring 63, so that the in FIG. 4A shown position is reached.

In the Figures 5 and 6 the component 18 is shown with the switching cam 20 in different positions of the switching element 10 in order to realize a release of the switching element 10 and a corresponding opening of a mounted on the pullout guide thrust element in other ways. On the component 18, a trigger 30 is slidably mounted, by means of which the switching element 10 can be moved out of the detent recess 26.

In the Figures 5A and 6A is the end portion 11 of the switching element 10 in the detent recess 26 and the trigger 30 is in an initial position.

For unlocking the switching element 10, the trigger 30 is moved in the longitudinal direction of the component 18, so that accordingly FIG. 6B the end portion 11 of the switching element 10 is moved out of the catch recess 26 and is pressed against the run-on slope 28. Upon further displacement of the trigger 30 accordingly FIG. 5C , the end portion 11 is finally pushed out of the detent recess 26 and moves around a tip 29 at the edge of the detent recess 26 in the loop-shaped portion 23 inside. The trigger 30 is arranged offset to the run-on slope 28 and advantageously has a beveled in the direction of the tip 29 stop 31st

By the force of the spring 63, the switching element 10 now moves in the opening direction along the loop-shaped portion 23 of the switching cam 20 (FIG. FIG. 6D ).

In FIG. 7 the trigger 30 is shown in detail. The trigger 30 is formed substantially plate-shaped and slidably mounted on a receptacle 40 of the component 18 with the switching cam 20. At the trigger 30, a step 35 is provided, on which a web is formed, the end forms a stop 31 for the end portion 11 of the switching element 10. Further, a projection 32 is provided on the trigger 30, which is guided in the substantially rectangular receptacle 40 on the component 18. Laterally stands on the trigger 30, a boom 34, which passes through an open edge portion 41 at the recess 40. On the receptacle 40, an opening 42 is formed through which the step 35 and the web with the stopper 31 is inserted. The trigger 30 is slidable via electromechanical or electromagnetic means coupled to the boom 34. For this purpose, a solenoid 50 is provided which is energized via a controller as needed. The controller may be coupled to sensors for detecting electrical, optical or acoustic pulses to cause unlocking.

In the FIGS. 8A to 8D the detent fitting during unlocking of the switching element 10 is shown. In Figure 8A is the trigger 30 in a starting position and the switching element 10 is locked to the detent recess 26. For unlocking the solenoid 50 is energized and moves via a linkage 51 which is coupled to the boom 34, the trigger 30 against the opening direction. Thereby, the end portion 11 of the switching element 10 is moved out of the detent recess 26 out in the loop-shaped portion 23, as shown in the FIGS. 6A to 6D is shown.

Subsequently, after switching off the energization of the solenoid 50, the trigger 30, for example, spring-loaded by an internal restoring device in the form of a spring moves back to the starting position. The unlocked switching element 10 is now moved in the opening direction due to the force of the spring 63. In an end position of the driver 7 is parked at an end portion of the curved path and the running rail 3 of the pullout guide can move independently of the driver 7 in the opening direction. In this release variant No shutter gap is needed to trigger, since the solenoid can be controlled eg via an external switch.

If a tensile force is applied to a front panel of a drawer, then it can be moved against the force of the spring 45 via the slidable mounting of the component 18. In such an overload situation, the trigger 30 may remain stationary and form a stop for the switching element 10 in the opening direction, so that then due to the relative movement between the component 18 and switching element 10, an unlocking according to the sequence of Figures 6B and 6C is effected.

In the FIGS. 9A to 9D the latching fitting is shown in the unlocking with a switch 70 having a sensor 71, by means of which a movement of the component 18 can be detected.

The unlocking of the switching element 10 by moving the component 18 (overload) can optionally be effected by displacing the trigger 30 against the opening direction. For this purpose, the switch 70 can detect a pulling movement or tensile force on the component 18 via a sensor 71, which then causes a control to actuate the lifting magnet 50. As a result, the trigger 30 is displaced by the lifting magnet 50 ( FIGS. 9B and 9C ) and unlocks the switching element 10, as with reference to the Figures 6B and 6C already explained. After unlocking, the component 18 moves back into the starting position by the force of the spring 45 and the trigger 30 by the internal restoring device ( FIG. 9D ).

In FIG. 10 a schematic diagram of the controller is shown. The switch 70 includes a sensor and / or sensor and is coupled via a controller with the lifting magnet 50, by means of which the trigger 30 is movable. The solenoid 50 is connected to a power supply 75 and can be energized to actuate the trigger 30.

In FIG. 11 a modified embodiment of the detent fitting is shown, are denoted in the same components with the same reference numerals as in the previous embodiment. On the housing 4, a component 18 'with the switching cam is not displaceably mounted, but on the component 18' is at the end a head portion 19 'is provided, which on a holder 48' of Housing 4 is set. As a result, the component 18 is fixed to the housing 4, so that an unlocking of the switching element 10 only by the steps of FIGS. 4 and 6 can be done.

In the exemplary embodiments shown, the switch 70 may be coupled with mechanical, optical or acoustic sensors which, depending on the application, bring about unlocking of the switching element 10. Alternatively, via the switch 70, e.g. the lights in the drawer are turned on. Other functions can also be activated by the switch 70.

Instead of the lifting magnet 50, another drive may be provided for moving the trigger 30, e.g. a swing magnet. Also, the trigger 30 may be pivotally mounted instead of linear. The drive for moving the trigger 30 is not limited to a solenoid, other actuators are conceivable.

By a switch 70 unlocking can also be effected simultaneously for a plurality of switching elements 10, for example, for switching elements 10 on pullout guides on opposite sides of a drawer.

LIST OF REFERENCE NUMBERS

1 pull-out guide 2 guide rail 3 runner 4 casing 5 curved guide 6 casing 7 takeaway 8th boom 9 coupling element 10 switching element 11 end 12 ground 17 activator 18 component 18 ' component 19 admission 19 ' header 20 switching curve 23 Loop-shaped section 24 diversion 25 admission 26 catch recess 27 admission 28 starting slope 29 top 30 trigger 31 attack 32 outlet 35 step 40 admission 41 edge section 42 opening 45 feather 46 spring end 47 spring end 48 bracket 48 ' bracket 50 solenoid 51 linkage 60 pole 61 end 62 disc 63 feather 64 cover 65 Support 70 switch 71 sensor 75 power supply

Claims (11)

1. Latching fitting for a pull-out guide, in particular for drawers, having a switching curve (20), in which a switching element (10) is mounted in a displaceable manner, wherein the switching curve (20) has a loop-like portion (23) with a latching hollow (26), and the switching element (10) can be latched on the latching hollow (26) by the force of a spring (63), characterized by the provision of a trigger (30), by means of which the switching element (10) can be moved out of the latching hollow (26).
2. Latching fitting according to Claim 1, characterized in that the trigger (30) can be activated by a switch (70).
3. Latching fitting according to Claim 2, characterized in that the switch (70) actuates the trigger (30) electromechanically or electromagnetically.
4. Latching fitting according to one of Claims 1 to 3, characterized in that the trigger (30) is mounted in a displaceable or pivotable manner on the component (18) with the switching curve (20).
5. Latching fitting according to one of Claims 1 to 4, characterized in that the trigger (30) is designed as a slide which is mounted such that it can be displaced along a mount (40) on the component (18) with the switching curve (20).
6. Latching fitting according to one of Claims 1 to 5, characterized in that the trigger (30), in the starting position, forms a stop (31) for the switching element (10).
7. Latching fitting according to one of Claims 1 to 6, characterized in that the trigger (30) can be moved via a solenoid (50).
8. Latching fitting according to one of Claims 1 to 7, characterized by the provision of a sensor which can sense a movement of a running rail (3) or of a component coupled to the running rail (3).
9. Latching fitting according to one of Claims 1 to 8, characterized in that the switching curve (20) is secured on a holder and the trigger (30) is movable.
10. Latching fitting according to one of Claims 1 to 9, characterized in that the trigger (30) forms a stop in the opening direction and the switching curve (20), in the event of tensile loading, can be moved in the opening direction relative to the trigger (30).
11. Latching fitting according to Claim 10, characterized in that the switching curve (20) is prestressed into a starting position via a spring (45).

Images