EP1959793B1 - Retracting mechanism for an extensible part that is guided so as to be longitudinally movable in a furniture carcass - Google Patents

Description

The present invention relates to a collection device for a longitudinally movable in a furniture body carried extract part with a force storage, which is stretched when opening the extractable part and its stored force is transmitted from a structurally predetermined insertion position of the extractable part as a pull-in force on the extractable part.

Feeding devices of the aforementioned type are known per se. Such collection devices, which may be partially combined with a damper, serve to pull an extractable part shortly before reaching the final insertion position without further and additional force from the outside into the final insertion position in the furniture body. In this case, the tensioned when pulling out of the extract part power storage is released and the stored force is used to pull the extractable part into the final insertion position within the furniture body.

In practice, there are applications in which a short-term reinforcement of the pull-in forces is desirable. For example, an increase in the pull-in force may be desirable to control a via a slotted guide Cover on a box-like pull-out part sealingly tighten. This is the case with certain types of dishwashing machines. But it can also be used to increase the pull-in force to press a pull-out with correspondingly high forces to a circumferential seal.

The present invention has for its object to further develop a collection device of the generic type to the effect that an increase in the retracting force is achieved and that pulling out with a force well below the effective pull-in forces is possible.

This object is achieved in accordance with the invention by providing, in addition to the force sensing and amplifying the effective pull-in forces in a specific pull-in position, a permanent magnet system comprising a first and a second component, i. consists of a permanent magnet and a Gegenpolstück of a magnetizable material or a second permanent magnet, wherein in each case a component of this permanent magnet system pivotally mounted about a horizontal axis on the furniture body and the second component, which is pivotally mounted about an axis on the pull-out part is such that their contact surfaces when meeting the extension part extend perpendicular to the insertion direction and the first component and the second component are pivoted when pulling out the extract part such that their contact surfaces are inclined relative to the vertical and are out of the closed position parallel to each other ,

The advantage of such a construction is that when inserting the extract part, the forces inherent in the permanent magnet system are significantly increased for enhancing the effect of the entire retraction device. On the other hand, these increased pull-in forces must not be overcome again when opening, since the separation of the permanent magnet system is not carried out by pulling the components perpendicular to the contact surfaces, but a separation of the contact surfaces by parallel displacement is achieved, so that despite given high pull-in forces during opening the extract part are comparatively low.

From the DE 203 12 072 U1 An arrangement is known in which a drawer or a pull-out system is pushed against the action of a force or spring storage in a furniture body and extended by the biased force from the furniture body, when an effective in the insertion position of the drawer or the pull-out system locking is released.

Two permanent systems are also exemplified as locking devices. In this case, a Ausfühnmgsform is formed so that a permanent magnet element is subtracted by a Bowden cable perpendicular to its contact surface of the other permanent magnet element. Another Ausfiwrungsform of the permanent magnet system provides that an element of this system is arranged at a pivotally mounted angle and is pivotable about a shaft through a Bowden cable of the actuating element. In this case, the pivotable permanent magnet element is separated in the manner of a tilting movement of the other element of the permanent magnet system.

A displacement of the contact surfaces of the components of the permanent magnet system parallel to each other does not take place.

Further features of the invention are the subject of dependent claims.

In the accompanying drawings embodiments of the invention are shown, which are described in more detail below.

Figur 1

eine schematisch dargestellte Teil-Ansicht eines Möbelkorpus mit einem darin längs verschiebbar geführten Auszugsteil und einer Einzugsvorrichtung

Figur 2

eine Teilansicht der Einzugsvorrichtung in einer gegenüber Figur 1 um 180° gedrehten Blickrichtung

Figur 3

eine der Figur 1 entsprechende Ansicht bei einer gegenüber Figur 1 tieferen Einschubposition eines Auszugsteiles

Figur 4

eine den Figuren 1 und 3 entsprechende Ansicht bei vollständig eingeschobenem Einzugsteil

Figur 5

eine im wesentlichen der Figur 3 entsprechende Ansicht bei teilweise aus der Einschubposition gemäß Figur 4 wieder herausgezogenem Auszugsteil

Figur 6

eine der Figur 5 entsprechende Ansicht bei noch weiter herausgezogenem Auszugsteil

Figur 7

eine der Figur 6 entsprechende Ansicht bei noch weiter ausgezogenem Auszugsteil und getrenntem Permanentmagnetsystem

Figur 8

eine bezüglich der Figur 7 in einer um 180° gedrehten Blickrichtung gesehene Teilansicht der Einzugsvorrichtung

Figur 9

eine Ansicht in Richtung des Pfeiles IX in Figur 1

Figur 10

eine schematisch dargestellte Teil-Draufsicht auf einen Möbelkorpus mit einem darin längs verschiebbar geführten Auszugsteil nach einem weiteren Ausführungsbeispiel der Erfindung

Figuren 11a-11d

vertikale Teilschnitt-Darstellungen durch den hinteren Endbereich des Möbelkorpus und des Auszugsteiles in verschiedenen Positionen.

Show it:

FIG. 1

a schematically illustrated partial view of a furniture body with a longitudinally slidably guided extract part and a collection device

FIG. 2

a partial view of the collection device in a opposite FIG. 1 rotated by 180 ° viewing direction

FIG. 3

one of the FIG. 1 corresponding view at one opposite FIG. 1 deeper insertion position of an extractable part

FIG. 4

a the FIGS. 1 and 3 corresponding view with fully inserted intake part

FIG. 5

one essentially the FIG. 3 corresponding view at partially from the insertion position according to FIG. 4 pulled out extract part

FIG. 6

one of the FIG. 5 corresponding view with still pulled out extract part

FIG. 7

one of the FIG. 6 corresponding view at still extended extract part and separate permanent magnet system

FIG. 8

one concerning the FIG. 7 in a rotated by 180 ° viewing direction partial view of the collection device

FIG. 9

a view in the direction of the arrow IX in FIG. 1

FIG. 10

a schematically illustrated partial plan view of a furniture body with a longitudinally slidably guided extract part according to a further embodiment of the invention

Figures 11a-11d

vertical partial sectional views through the rear end of the furniture body and the extractable part in different positions.

In the drawings, the reference numeral 1 in each case a total of a schematically illustrated cabinet furniture referred to, which also has only schematically shown furniture body 2 and a longitudinally slidably mounted extract part 3.

The pull-out part 3 is connected in a known manner via guide rails 4 longitudinally displaceable with the furniture body 2 and has an integrated collection device 5, in which in a conventional manner when opening or pulling the extract part 3 from the furniture body 2, a stored energy store is stored Force is released from a constructive predetermined insertion position of the extract part 3 again and transferred to the pull-out part 3 as a pull-in force.

Structure and operation of such collection devices 5 are known per se, so that has been omitted here on a detailed presentation and description of this component.

From the EP 0 391 221 B1 a corresponding collection device has been shown and described in detail, also in terms of their operation. In that regard, the EP 0 391 221 B 1 made in terms of its disclosure content regarding a collection device to the subject of the present application.

For the purposes of the present invention, in order to reinforce the pull-in forces which can act on the pull-out part 3, in addition to the known pull-in device 5 with its force accumulator, a permanent magnet system is provided which consists of a permanent magnet 6 and a counter pole piece 7 of a magnetizable Material or another permanent magnet 7 is. In this case, in each case one component of the permanent magnet system is mounted on the furniture body 2 and the respective other component on the pull-out part 3.

In the illustrated embodiment, the permanent magnet 6 is located on the furniture body 2 and the counter pole piece 7 or another permanent magnet 7 are connected via a pivot lever 8 on the pull-out part 3.

The pivot lever 8 is pivotally mounted about an axis 9 on the pull-out part 3. This bearing point is located in the lower region of the furniture body 2, while the opposite pole piece 7 (or another permanent magnet 7) attached to the other end of the lever 8 is arranged in the upper region of the furniture body 2, as is the permanent magnet 6 mounted on the furniture body 2 itself.

The two mutually facing contact surfaces of the two components 6 and 7 of the permanent magnet system are at the same height and in a common axial direction.

The lever 8 extends from the bearing 9, starting from the vertical inclined upward, so that the counter pole piece 7 always has a smaller distance from the permanent magnet 6 than the bearing. 9

By a spring 10, the lever 8 is also constantly biased in the direction outlined above.

On the pull-out part 3, a support pin 11 is mounted vertically displaceable, which is height adjustable via a horizontal arm 12 via a fixed to the furniture body 2 guide slot 13. In this case, the support pin 11 is below the lever 8 in a common plane with this lever 8, so that the lever 8 can be supported on this support pin 11.

The permanent magnet 6 is fixed to a bearing part 14, which is connected to a horizontal axis 15 pivotally connected to the furniture body 2.

The support pin 11 is mounted within a non-illustrated, vertically extending longitudinal guide in the pull-out part 3 with a certain play, so that this support pin 11 is blocked at lateral load within the guide.

The slide guide 13 is provided with a rising in the direction of the back 2a of the furniture body 2 edge 13a and with a starting thereof in the direction of the back 2a of the furniture body 2 sloping edge 13b. The point of inflection 13c, ie the highest point of the slide guide 13 causes a maximum lifting of the support pin 11 via the associated boom 12th

This maximum extension of the support pin 11 takes place significantly before contacting the two components 6 and 7 of the permanent magnet system.

In FIG. 1 a position of the pull-in part 3 is shown, which results when this is determined from its complete open position in the direction of the back 2a of the furniture body 2 to reach the inflection point 13a by the transverse arm 12 of the support pin 11. In this position, the lever 8 is under exercise of a moment at the upper end of the support pin 11. If the intake part 3 from this position opposite FIG. 1 further to the right, ie, driven in the direction of the back 2a of the furniture body 2 in this, jammed the support pin 11 within its leadership due to the other hand between the guide and support pin 11 given, large tolerances.

The lever 8 is so even after exceeding the turning point 13c by the cross arm 12 in his off FIG. 1 apparent position. In this position, the two components 6 and 7 of the permanent magnet system, as already mentioned above, are located opposite one another at a height and in an escape direction. The mutually facing contact surfaces of the two components 6 and 7 are perpendicular to the insertion direction of the extract part. 3

In FIG. 3 a shift position of the extension part 3 is shown, in which a contact of the two components 6 and 7 of the permanent magnet system has occurred. Due to the magnetic forces, a significantly increased pull-in force is exerted on the pull-out part 3 shortly before the contacting of the two components 6 and 7, as this would be possible only by the collection device 5 of conventional design.

Since now the lever 8 is supported on the permanent magnet 6 via the counter-pole piece 7 (or another permanent magnet 7), further displacement of the pull-out part 3 in the direction of the rear side 2a of the furniture body 2 causes the load on the support pin 11 to be moved by the lever 8 will be annulled. The support pin can now fall in its leadership due to gravity down to an end position. Due to the fact that the counter-pole piece 7 is moved by the pivotal movement of the lever 8 on a circular arc portion, the permanent magnet 6 must pivot about a horizontal axis 6a and also move in the vertical direction. Thus, the contact surfaces between the two components 6 and 7 while still still at each other, but are inclined relative to the vertical, as well FIG. 4 this clearly shows.

If, from this position, which corresponds to the final closed position of the pull-out part 3, the pull-out part 3 is displaced again in the opening direction, a position of the permanent magnet system 6, 7 according to FIG FIG. 5 reached. Here it is clear that the two components 6 and 7 still abut each other, but again in a vertical position to the direction of the pull-out part 3 are. If a further opening movement is performed, the lever 8 is pivoted by the spring 10 further in the direction of the back 2a of the furniture body 2. This leads to a parallel displacement of the two contact surfaces of the permanent magnet system 6 and 7 to each other, as well as FIG. 6 this illustrates. As a result of this parallel displacement, separation of the two components 6 and 7 of the permanent magnet system ultimately takes place without the need for significant external forces.

As FIG. 7 shows, after the separation of the two components 6 and 7 of the permanent magnet system of the arm 12 of the support pin 11 on the back 2a of the furniture body 2 facing edge 13b of the guide slot 13 and is therefore moved within its leadership upwards. The support pin 11 thus comes again to rest on the underside of the lever 8. This will be another

Turning the lever 8 in the direction of the rear side 2a of the furniture body 2 prevented.

By the permanent magnet system 6 and 7 so the effective retraction force, which is exerted on the pull-out part 3, be increased considerably to a structurally predetermined displacement range, so that this on the pulling force acting on the pull-out part 3 also for controlling others, not shown here Functions can be used.

When moving out of the extract part 3 from its closed position, however, it is no longer necessary to overcome the mentioned increased retraction force, since the separation of the permanent magnet system 6, 7 by the parallel displacement of the two contact surfaces of the addressed components 6 and 7, including relatively small external forces are sufficient.

The increased pull-in force that can be exerted on the pull-out part 3 by the permanent magnet system 6, 7 can be used, for example, to seal a gate-guided lid (not shown here) in a sealing manner on a box-like pull-out part. Such a solution is advantageous, for example, in a correspondingly designed dishwasher. However, the increased pull-in force can also be exploited to use the pull-out part 3 with a front panel, for example, to a corpus side, circumferential seal and to deform the seal. Wherever increased pull-in forces are desirable, the solution according to the invention can be used with the advantage that the corresponding forces during opening or pulling out of the pull-out part do not increase to the same extent as the desirable higher pull-in forces which can be achieved.

The slotted guide 13 and guided thereon cross arm 12 of the support pin 11 are made of a pair of materials with very low coefficient of sliding friction.

In the hitherto described embodiment of the invention according to the figures 1 to 9, the control of the support pin 11 is almost exclusively by longitudinal movements of the extract part. 3

This differs from the embodiment according to the FIGS. 10 to 11d in that the support pin 11 can be moved manually, electromotively, electromagnetically or pneumatically by an actuating device 16.

As FIG. 11 a makes clear, the support pin 11 is pressed at non-activated actuator 16 from below against the lever 8 and the maximum pivoting position of the lever 8 is fixed by a provided on the extract part 3 abutment 17.

Alternatively, it is also conceivable to fix the lever 8 in the specified position in that the lever 8 is attracted by a spring against the support pin 11 and the support pin 11 is held in a precisely predetermined position, for example, characterized in that the support pin 11 at abuts an axial stop within its guide.

In this in FIG. 11 a shown closed position of the extension part 3 are the permanent magnet 6 and a counter pole piece 7 or another permanent magnet to each other.

In the illustrated embodiment, a Gegenpolstück 7 or another permanent magnet 7 is attached as a separate component on the lever 8. Alternatively, it is also conceivable to manufacture the lever 8, including a counter-pole piece 7 in one piece from a magnetizable material, whereby the production costs can be reduced considerably.

Now, if the actuator 16 is activated, the support pin 11, as shown FIG. 11b emerges to be moved away from its voltage applied to the lever 8 support position down. For this purpose, a longitudinal displacement of the extension part 3 is not required. Now, if the pull-out part 3 is pulled out of the furniture body 2 in the opening direction from this position, the bearing 9 moves around which the lever 8 is pivotally mounted, from the permanent magnet 6 which is fixed to the furniture body 2, in the direction of the front side of the furniture body 2 forward, with the result that the Gegenpolstück 7 or another, fixed to the lever 8 permanent magnet around its upper edge opposite the one to be designated as stationary permanent magnet 6 on the one hand tipped and on the other hand also moved simultaneously down. This creates between the permanent magnet 6 and the counter pole piece 7 and another permanent magnet a constantly increasing air gap, so that even in this case a smaller pull-out force to open the extension part 3 is required, as this corresponds to the locking effect of the pairing permanent magnet 6 / counter pole piece 7 ,

From a certain opening stroke, the lever 8 is then supported again on the downwardly moving support pin 11 or on any other support from what FIG. 11c clearly shows. In this position, permanent magnet 6 and counter pole piece 7 are completely separated from each other.

When opening the pull-out part 3, the permanent magnet 7 provided on the lever 8 or alternatively a counter-pole piece 7 fastened to the lever 8 can cover the entire contact surface of the permanent magnet 6 with its upper edge or, if the lever 8 is supported early on the support pin 11 or any other support is even then separated from the permanent magnet 6, when the upper edge of the permanent magnet 7 or a corresponding Gegenpolstückes is still at a certain distance to the lower edge of the permanent magnet 6.

The pull-out part 3 can now be moved out of the cabinet body 2 in its pull-out position and, after deactivation of the actuating device 16, the support pin 11 is again moved upward until the lever 8 bears against the counter-bearing 17. This situation is clear FIG. 11d ,

Now, if the pull-out part is moved in such a position again in the closing direction, by the action of the permanent magnet 6 and the Gegenpolstückes 7 shortly before reaching the final closed position an increased clamping force effective until the counter pole piece 7 bears against the permanent magnet 6, as in the starting position according to FIG FIG. 11a shows.

In the illustrated embodiment, the actuating device 16 is a Bowden cable which can be actuated from the front side 18 of the extension part 3, as well as FIG. 10 this shows very clearly. Notwithstanding the illustrated embodiment, the actuator for the support pin 11 but also consist of an electric unlocking, for example in the form of a linear movement device with an eccentric disc actuated electric motor.

It is also possible to move the support pin by a permanent magnet or via a pneumatic cylinder, wherein in all these only suggestively listed embodiments, an actuating element for activating the actuator 16 in the front 18 of the extract part 3 is provided.

A user can thus by activation of the actuator 16 from the front side 18 of the extract part 3, first release the support pin 11 and then bring about by exerting a pulling movement on the extract part 3, the opening of this extract part 3. The actuator 16 should be executed in any case so that when their deactivation of the support pin 11 is moved back into its upper operative position, in which the lever 8 is pressed against the stop 17.

Claims (16)

1. A retraction device (5) for a pullout part (3), which is guided so it is longitudinally displaceable in a furniture body (2), having a force accumulator, which is tensioned upon opening of the pullout part (3) and whose stored force is released from a structurally predefined pushed-in position of the pullout part (3) and is transmitted as retraction force to the pullout part (3), characterized in that, in addition to the force accumulator and to amplify the active retraction forces in a specific retraction position, a permanent magnet system (6, 7) is provided, which consists of a first component and a second component, i.e., of a permanent magnet (6) and an opposite pole part (7) made of a magnetizable material or a second permanent magnet (7), the first component (6) of this permanent magnet system (6, 7) being installed so it is pivotable around a horizontal axis (6a, 15) on the furniture body (2) and the second component (7) being installed on the pullout part (3) via a pivot lever (8), which is mounted so it is pivotable around an axis (9), in such a manner that the contact surfaces thereof, when they meet one another as the pullout part (3) is pushed in, extend perpendicularly to the pushing-in direction and, as the pullout part (3) is pulled out, the first component (6) and the second component (7) are pivoted in such a manner that their contact surfaces are inclined in relation to the vertical and are displaceable parallel to one another out of the closed position.
2. The retraction device according to Claim 1, characterized in that the component (6, 7) of the permanent magnet which is installed on the pullout part (3) is installed on the upper end of a lever (8), whose lower end is linked to the pullout part (3) so it is pivotable around an axis (9), the lever (8) being inclined in relation to the vertical in the direction of the two components (6, 7) of the permanent magnet system and being continuously loaded by a spring in the direction of the second component (6, 7) of the permanent magnet system.
3. The retraction device according to Claim 2, characterized in that a support pin (11) is provided on the pullout part (3), which supports the lever (8) on its lower side, facing toward the rear side (2a) of the furniture body (2), in a position in which the two components (6, 7) of the permanent magnet system are positioned in a common vertical location having their contact surfaces, which face toward one another, perpendicular to the pushing-in direction of the pullout part (3).
4. The retraction device according to Claim 3, characterized in that, after reaching the contact position between the two components (6, 7) of the permanent magnet system, the support of the lever (8) by the support pin (11) is canceled.
5. The retraction device according to Claim 4, characterized in that the support pin (11) is guided so it is vertically adjustable with a certain play in a longitudinal guide of the pullout part (3) and is provided with a cantilever (12), which is guided on a link guide (13), which is provided with flanks (13a, 13b) that rise in the direction of the rear side (2a) of the furniture body (2) or fall in the direction of the rear side (2a) of the furniture body (2), respectively.
6. The retraction device according to one of the preceding claims, characterized in that the component (6, 7) of the permanent magnet system installed on the body is pivotable around a horizontal axis and is attached to the furniture body (2) so it is movable in the vertical direction.
7. The retraction device according to one of the preceding claims, characterized in that the maximum vertical adjustment of the support pin (11) is determined by the turning point (13c) between the two flanks (13a and 13b) of the link guide (13).
8. The retraction device according to one of the preceding claims, characterized in that the support pin (11) is also fixed within its guide in its maximum height position by tilting of the support pin (11) through contact of the spring-loaded lever (8) when the contact of the transverse cantilever (12) to the link guide (13) is canceled.
9. The retraction device according to one of the preceding claims, characterized in that the link guide (13) and the transverse cantilever (12) of the support pin (11) guided thereon consists of a material pair having very low coefficients of kinetic friction.
10. The retraction device according to Claim 1, characterized in that the component (7) of the permanent magnet system installed on the pullout part (3) is arranged on the upper end of a lever (8), whose lower end is linked to the pullout part (3) so it is pivotable around an axis (9), the lever (8) being inclined in relation to the vertical in the direction of the second component (6) of the permanent magnet system and being loaded by a support pin (11) of an actuating unit (16).
11. The retraction device according to Claim 10, characterized in that the lever (8) is pressed against a stop (17) on the pullout part (3).
12. The retraction device according to Claim 10, characterized in that the lever (8) is drawn by means of a spring against the support pin (11) or another support.
13. The retraction device according to Claim 10, characterized in that the lever (8) and an opposite pole part (7), which is provided on the upper end of the lever (8), are produced in one piece from a magnetizable material.
14. The retraction device according to one of Claims 10 to 13, characterized in that the actuating unit (16) consists of a Bowden cable.
15. The retraction device according to one of Claims 10 to 13, characterized in that the actuating unit (16) acts on the support pin (11) via an electric motor, electromagnetically, or pneumatically.
16. The retraction device according to one of Claims 10 to 13, characterized in that the actuating unit (16) can be triggered from the front side (18) of the pullout part.

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