WO2011003738A1

WO2011003738A1 - Catch system

Info

Publication number: WO2011003738A1
Application number: PCT/EP2010/058889
Authority: WO
Inventors: Andreas Hoffmann
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2009-07-09
Filing date: 2010-06-23
Publication date: 2011-01-13
Also published as: AU2010270426A1; KR101726990B1; RU2012103715A; EP2451312B1; EP2451312A1; CN102573568B; RU2518185C2; KR20120052976A; TW201102021A; JP2012531991A; AU2010270426B2; JP5622245B2; DE102009026141A1; CN102573568A

Abstract

The invention relates to a catch fitting for a pull-out guide, in particular for drawers, comprising a switching curve (20) in which a switching element (10) is displaceably mounted, wherein the switching curve (20) comprises a loop-shaped segment (23) having a catch depression (26). The switching element (10) can be engaged with the catch depression (26) by a force storage (63). An initiator (30) is provided, by means of which the switching element (10) can be displaced out of the catch depression (26).

Description

ratcheting

The present invention relates to a locking system, in particular for movable furniture parts, with at least two detent fittings, each detent fitting comprises a switching curve in which a switching element is movably mounted, each switching cam has a loop-shaped portion and a detent recess, and the switching element by the force of a Force accumulator can be latched to the detent recess, and each switching element is coupled to a movable furniture part

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 locking system for movable furniture parts, which ensures a synchronous unlocking of locking fittings.

This object is achieved with a locking system with the features of claim 1. According to the invention, a trigger is provided in the latching system at each latching fitting, by means of which the switching element can be moved out of the latching recess, wherein a control serves to actuate the triggers of the latching fittings for unlocking the switching elements at the same time. As a result, due to a predetermined pulse unlocking all detent fittings occur simultaneously. Especially with wide drawers, but also in other applications, so a synchronous unlocking and parallel guidance of a movable furniture part can be guaranteed.

In one embodiment, the controller is coupled to at least one optical, acoustic, electrical or magnetic sensor. As a result, different switching signals can be delivered to the controller, which in turn actuate the individual triggers on the locking fittings. The controller can be coupled with several drives, by means of which in each case a trigger is movable. The drives may be e.g. be designed as solenoids, hydraulic, pneumatic, electric drives or other drives.

If the controller is provided with at least one sensor for detecting the position of the movable furniture part, the locking fittings can simplify handling, for example, if by pressing the drawer, the controller receives the signal, now the user wants to open the drawer, so that automatically all locking fittings are unlocked , The user then not only has to rely on the mechanical unlocking of the detent fittings, but can also be assisted by the triggers.

The trigger on each detent fitting may be formed as a slide which is slidably mounted along a receptacle on a component with the switching cam. A pivotable arrangement of the shutter is possible.

In order to ensure a secure release at a tensile force on a furniture part, such as a drawer, and to avoid damage due to overload, each switching curve can be slidably mounted on a detent fitting and a power storage, for example in the form of a rubber element or a train or Compression spring, to be biased into a starting position. This ensures that a release of the respective detent fitting is ensured at a predetermined force. In one embodiment, upon actuation of the trigger, an optical or acoustic device can be switched on at the same time. For example, upon opening the drawer, the controller may issue a signal to a light source, which is then powered and illuminates the drawer. In addition, acoustic signals can accompany the operation.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figures 1A and 1B are two views of a drawer with drawer slides;

FIG. 2A is a perspective view of a detent fitting mounted on a pullout guide;

Figure 2B is a perspective view of the detent fitting of Figure 2A;

Figure 3 is an exploded view of the detent fitting of Figure 2;

Figures 4A and 4B are views of the switching curve with a view of the switching element of the detent fitting of Figure 2;

Figures 5A to 5D show several perspective views of the component with the

Switching curve with view of the trigger;

FIGS. 6A to 6D show several views of the switching curve during the unlocking of the switching element;

Figure 7 is an enlarged view of the trigger and the component with the switching curve in perspective of FIG. 3;

Figures 8A to 8D show several views of the detent fitting during unlocking of the switching element; FIGS. 9A to 9D show several views of the detent fitting with a switch during the unlocking of the switching element;

Figure 10 is a schematic diagram of the control of the release of the detent fitting;

Figure 11 is an exploded view of a modified detent fitting;

Figures 12 to 17 show several views of the two locking fittings of a locking system according to the invention in different positions, and

Figures 18A and 18B show another embodiment of a piece of furniture with the

CLICK system;

Figure 19 is a schematic diagram of the synchronous release of Rastbesclägen.

A drawer 93 is movably held on a furniture body via a latching system, for which purpose a first pull-out guide 1 is provided on a left-hand side wall 91 and a second pull-out guide 1 is provided on a right-hand side wall 92, wherein the side walls 91 and 92 carry a bottom 90.

A pull-out guide 1 shown in FIG. 2A comprises a stationary guide rail 2, which can be mounted on a furniture carcass. 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 nozzle 65 which is integrally formed with the housing 4 (Figure 3). The driver 7 is connected to a rod 60 coupled, which is received with a thickened ball-head-like end portion 61 in a dome-like receptacle. The inclusion of the end portion 61 may be material form or force fit. 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 or housing bottom of the housing 6.

The driver 7 also has a boom 8, on which a coupling element 9 is fixed. The coupling element 9 is connected to a switching element 10, which is formed as a metallic wire having a bent end portion 11. 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 16 on the housing 4. In this case, the component 18 is biased by a spring 45 into a starting 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 16 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 detent fitting 15 with the switching cam 20 and the switching element 10 will be explained in more detail with reference to FIG 4.

In a starting position, there is a drawer 93 coupled to the running rail 3 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 curved end portion 11 is located in a detent recess 26 of the switching cam 20 and is in the detent recess 26th pressed 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 section 23.

If the drawer 93 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 towards the furniture body, so that the bent end section 11 abuts against a run-on slope 28 on the switching cam 20 is moved, which causes the switching element 10 is pivoted and engages in a receptacle 27 which is arranged offset to the latching recess 26 (Figure 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.

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. After being released by the user, the drawer 1 due to the force of the compression spring 63 is moved back until the end portion 11 is moved to the detent recess 26 to the detent recess 26, so that the position shown in Figure 4A is reached.

In the figures 5 and 6, the component 18 is shown with the switching cam 20 in different positions of the end portion 11 of the switching element 10 to realize a release of the switching element 10 and a corresponding opening of a slide mounted on the pullout guide in a different way. On the component 18, a trigger 30 is slidably mounted, by means of which the end portion 11 is moved out of the detent recess 26.

In FIGS. 5A and 6A, the end section 11 of the switching element 10 is located in the latching 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 according to Figure 6B, the end portion 11 of the switching element 10 is moved out of the detent recess 26 and is pressed against the run-on slope 28. In a further displacement of the trigger 30 according to Figure 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 31 (see Figure 7).

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 (Figure 6D).

In Figure 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.

FIGS. 8A to 8D show the latching fitting during the unlocking of the switching element 10. In Figure 8A, the trigger 30 is in an initial 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 made the detent recess 26 moves out into the loop-shaped portion 23 as shown in Figs. 6A to 6D.

Subsequently, after switching off the energization of the solenoid 50, the trigger 30 moves, e.g. Federbeaufschlagt by an internal restoring device in the form of a spring 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, for example, can be controlled 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 unlocking according to the sequence of Figures 6B and 6C is effected.

In FIGS. 9A to 9D, the latching fitting is shown in the unlocking with a switch 70, which has 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 has already been explained with reference to FIGS. 6B and 6C. After unlocking, the component 18 by the force of the spring 45 and the trigger 30 by the internal return device move back to the starting position (Figure 9D). FIG. 10 shows a schematic circuit diagram of the controller. 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.

FIG. 11 shows a modified embodiment of the detent fitting 15 'in which identical components are designated by the same reference numerals as in the preceding exemplary 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 is fixed to a holder 48' of the housing 4. As a result, the component 18 'is fixed to the housing 4, so that an unlocking of the switching element 10 can only take place through the steps of FIGS. 4 and 6.

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, an unlocking can also be effected simultaneously for a plurality of switching elements 10 of locking fittings 15, 15 ', as explained below.

In the figures 12 to 17 each of the locking system is shown with a left detent fitting and a right detent fitting in different positions. In Figure 12, the latching system with the two locking fittings in a rest position, in which a drawer 93 is disposed in the closed position in front of a furniture body. FIG. 13 shows a position in which a drawer 93 on the left side has been manually released by pressing in the front panel, so that the switching element 10 is moved out of the latching recess 26 on the latching fitting 15 on this side. On the right side, however, the movement of the drawer has not yet unlocked the switching element 10 causes, but due to the upcoming thrust of the already triggered detent fitting on the drawer 93, the component 18 is slightly withdrawn, while the trigger 30 remains rigid and a stop for the switching element 10 forms. When looking at the individual not yet triggered detent fitting 15, the thrust of the already triggered detent fitting 15 acts as a pulling force on the spring-loaded displaceable component 18 of the not yet triggered detent fitting 15. The movement of the component 18 with the switching cam 20 is detected by the switch 70, which rests with the probe or sensor 71 on the component 18.

As shown in Figure 14, due to the detection of a relative movement of the component 18 by the switch 70, a signal is output to a controller, by means of which the trigger 30 on the right side is now triggered. For this purpose, the solenoid 50 is controlled, which moves the trigger 30 in Figure 14 to the right via the rod 51, so that the switching element 10 is also unlocked on the right side.

Subsequently, after the unlocking of the switching element 10 on the right side of the detent fitting 15, the component 18 is moved back to the starting position due to the force of the spring 45. As a result, the sensor 71 of the switch 70 also returns to the starting position. As a result, the switch 70 can now deliver a further signal to the controller that the component 18 is again arranged in the original position.

After unlocking the switching elements 10, the driver 7 are now moved parallel to each other in the opening direction, so that so that the activators 17 and the rails 3 are moved to the drawer 93 together. The triggers 30 also move back after switching off the solenoid 50 in the starting position.

In Figure 17, the end position is shown, in which the drivers 7 are parked at a curved end portion of a guideway and wait for that they return to a locked position by a closing movement of the drawer 9.

FIGS. 18A and 18B show a modified exemplary embodiment of a latching system in which two pull-out guides 1 are provided, which, however, are not arranged laterally next to each other but one above the other. Such drawer guides 1 are used in particular for pharmacist cabinets, in which the height is a multiple of the width. The pullout guides 1 are each fixed to a side wall 61 of a furniture carcass, wherein on a running rail 3 each pullout guide 1 a only partially shown grating 94 is arranged. Such drawer guides for vertical thrusts are often arranged diagonally.

FIG. 19 shows the synchronous release of at least two latching fittings 15, 15 'according to the invention. In order to achieve a high switching reliability, a synchronous release of the lifting magnet 50 is obtained via the sensor 71 and the switch 70 and the controller 76 in principle. To operate the system, a power supply 76 is needed. The activation of a sensor 71 always causes a release of all connected to a drawer 93 solenoid 50th

Instead of two pullout guides 1 more than two pullout guides 1 can be used in a locking system according to the invention. In addition, the locking system can also be used for hinge elements, in which instead of a linear movement of movement a pivoting movement is present.

LIST OF REFERENCE NUMBERS

pull-out guide

guide rail

runner

casing

curved guide

casing

takeaway

boom

coupling element

switching element

end

ground

Locking device

admission

activator

component

'Component

header

'Head section

switching curve

Loop-shaped section

diversion

admission

catch recess

admission

starting slope

top

trigger

attack

outlet

step

admission

edge section

opening feather

spring end

bracket

solenoid

linkage

pole

Side wall

disc

feather

cover

Support

switch

sensor

power supply

control

ground

Side wall

drawer

grid

Claims

claims

1. latching system, in particular for movable furniture parts, with at least two latching fittings (15, 15 '), wherein each latching fitting (15, 15') comprises a switching cam (20) in which a switching element (10) is movably mounted, each switching cam (20) has a loop-shaped portion (23) and a detent recess (26), and the switching element (10) by a force accumulator (63) on the detent recess (26) can be latched, and each switching element (10) is coupled to a movable furniture part , characterized in that at each detent fitting (15, 15 '), a trigger (30) is provided, by means of which the switching element (10) from the detent recess (26) is moved out, wherein a controller (76) is provided, by means of which Trigger (30) of the locking fittings (15, 15 ') for unlocking the switching elements (10) are simultaneously actuated.

2. Rasten system according to claim 1, characterized in that the controller is coupled to at least one optical, acoustic, electrical or magnetic sensor.

3. latching system according to claim 1 or 2, characterized in that the control with a plurality of drives (50) is coupled, by means of which in each case a trigger (30) is movable.

4. Rasten system according to one of claims 1 to 3, characterized in that the control is provided with a sensor for detecting the path of the movable furniture part.

5. latching system according to one of claims 1 to 4, characterized in that each trigger (30) is designed as a slide which is displaceably mounted along a receptacle (40) on a component (18) with the switching cam (20).

6. Rasten system according to one of claims 1 to 5, characterized in that the triggers (30) are each movable via a drive.

7. Rasten system according to one of claims 1 to 6, characterized in that the triggers (30) in each case via a lifting magnet (50) are movable.

8. Raising system according to one of claims 1 to 7, characterized in that the triggers (30) form a stop for the switching element (10) in the starting position.

9. latching system according to one of claims 1 to 8, characterized in that the switching curves (20) are biased via an energy storage in an initial position.

10. Rasten system according to one of claims 1 to 9, characterized in that the switching curves (20) via a spring (45) are biased to an initial position.

11. latching system according to one of claims 1 to 10, characterized in that upon actuation of the trigger (30) by the controller (76) at the same time an optical or acoustic device is switched on.