WO2007068679A1

WO2007068679A1 - Retracting mechanism for an extensible part that is guided so as to be longitudinally movable in a furniture carcass

Info

Publication number: WO2007068679A1
Application number: PCT/EP2006/069566
Authority: WO
Inventors: Takayoshi Shimizu; Thorsten HÖTGER
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2005-12-12
Filing date: 2006-12-12
Publication date: 2007-06-21
Also published as: KR20080079307A; CN101325890A; JP2009518089A; AU2006325334A1; KR101316715B1; EP1959793A1; CN101325890B; DE202006004090U1; EP1959793B1; JP5074409B2

Abstract

Disclosed is a retracting mechanism (5) for an extensible part (3) that is guided so as to be longitudinally movable in a furniture carcass (2). Said retracting mechanism (5) comprises an energy accumulator which is tensioned when the extensible part is opened and whose accumulated energy is released and is transmitted to the extensible part (3) as a retracting force from a constructively predefined pushed-in position of the extensible part (3). The inventive retracting mechanism (5) is embodied such that a permanent magnet system (6, 7) encompassing a permanent magnet (6) and an oppositely poled piece (7) made of a magnetizable material or a second permanent magnet (7) is supplied in addition to the energy accumulator in order to boost the effective retracting force in a certain retracted position. One component (6, 7) of said permanent magnet system is mounted on the furniture carcass (2) while the other component (6, 7) is mounted on the extensible part (3) such that the contact surfaces thereof extend perpendicular to the pushing direction when the contact surfaces meet when the extensible part is pushed in while being movable parallel to each other when the extensible part (3) is pulled out of the closed position.

Description

Paul Hettich GmbH & Co. KG Vahrenkampstrasse 12-16 32278 Kirchlengern

26068WO 6/15 December 4, 2006

Feeding device for a longitudinally displaceably guided in a furniture body extract part

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 according to the invention in that in addition to the energy storage and to reinforce the effective pull-in forces in a certain retraction position, a permanent magnet system of a permanent magnet and a Gegenpolstück of a magnetizable material or a second permanent magnet is provided, each one component of this permanent magnet system on the furniture body and the another component is mounted on the pull-out part in such a way that their contact surfaces during collision when inserting the pull-out part run perpendicular to the insertion direction and are displaceable parallel to one another when the pull-out part is pulled out of the closed position.

The advantage of such a construction is that when the pull-out part is inserted, the forces inherent in the permanent magnet system are considerably increased for increasing the effect of the entire feed 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.

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.

Show it:

Figure 1 is a schematically illustrated partial view of a furniture body with a longitudinally slidably guided extract part and a collection device

Figure 2 shows a partial view of the feeder in a relation to Figure 1 to

180 ° rotated viewing direction

Figure 3 is a view corresponding to Figure 1 at a lower compared to Figure 1 insertion position of a pullout part

FIG. 4 shows a view corresponding to FIGS. 1 and 3 with the insertion part fully inserted

Figure 5 is a view corresponding substantially to Figure 3 with partially pulled out from the insertion position of Figure 4 extract part

FIG. 6 is a view corresponding to FIG. 5, with the extract part still further pulled out

FIG. 7 shows a view corresponding to FIG. 6 with the pull-out part still further extended and the permanent magnet system separated

FIG. 8 shows a partial view of the collection device seen with respect to FIG. 7 in a viewing direction rotated by 180 °

FIG. 9 shows a view in the direction of the arrow IX in FIG. 1 Figure 10 is 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

characters

1 Ia- 1 Id vertical partial sectional views through the rear end portion 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 displaceably mounted extract part 3.

The pull-out part 3 is connected in a known manner via guide rails 4 along the movable furniture body 2 and has an integrated collection device 5, in which in a conventional manner when opening or pulling out of the extract part 3 from the furniture body 2, a power storage is stretched, whose stored force is released again from a structurally predetermined insertion position of the pull-out part 3 and transferred to the pull-out part 3 as 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 EP 0 391 221 B1 a corresponding intake device is shown and described in detail, also with regard to their mode of operation. In that regard, EP 0 391 221 B1 is made with regard to 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 made of magnetic material. sierbaren material or another permanent magnet 7 is made. 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 on

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 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 1 1 is mounted within a non-illustrated, vertically extending longitudinal guide in the extension part 3 with a certain play, so that this support pin 11 is blocked in 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 turning point 13 c, ie the highest point of the slotted 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 clearly before contacting the two components 6 and 7 of the permanent magnet system.

FIG. 1 shows a position of the pull-in part 3, which results when this is determined from its completely open position in the direction of the rear side 2a of the furniture body 2 until the point of inflection 13a is reached 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 pull-in part 3 is moved further out of this position relative to FIG. 1 to the right, ie in the direction of the rear side 2a of the furniture carcass 2, the support pin 11 jams within its guide due to the large, predetermined guide between the guide pin and the support pin 1 1 tolerances.

The lever 8 is thus held even after exceeding the turning point 13c by the transverse arm 12 in its apparent from Figure 1 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

FIG. 3 shows a displaced position of the pull-out part 3, in which a contact of the two components 6 and 7 of the permanent magnet system has occurred. As a result of the magnetic forces, a considerably increased pull-in force is exerted on the pull-out part 3 shortly before contacting the two components 6 and 7. exercises, 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 deflected by the Lever 8 is canceled. 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, although the contact surfaces between the two components 6 and 7 are still still at each other, but are inclined relative to the vertical, as Figure 4 shows this clearly.

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. 5 is initially achieved. 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 Figure 6 illustrates this. 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 FIG

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 raised pull-in 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. The raised

Einziehskraft 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 Ausfiührungsbeispiel described so far of the invention according to the figures 1 to 9, the control of the support pin 11 takes place almost exclusively by longitudinal movements of the extract part. 3

This differs from the exemplary embodiment according to FIGS. 10 to 1 Id in that the support pin 11 can be moved manually, by an electric motor, electromagnetically or pneumatically by an actuating device 16.

As FIG. 11a makes clear, the support pin 11 is pressed against the lever 8 from below when the actuating device 16 is not activated, and the maximum

The pivoting position of the lever 8 is thereby fixed by means of an abutment 17 provided on the pull-out part 3.

Alternatively, it is also conceivable to fix the lever 8 in the specified position by the fact that the lever 8 is attracted by a spring against the support pin 11 and the support pin 1 1 is held in a precisely predetermined position, for example by the fact that Support pin 11 abuts an axial stop within its guide.

In this closed position of the extension part 3 shown in FIG

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

Figure Ib shows, are 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. 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 in order to move Ches 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 relative to the permanent magnet 6 to be designated as stationary, on the one hand, it is tilted and, on the other hand, it is simultaneously moved downwards. This creates between the permanent magnet 6 and the counter pole piece 7 or another permanent magnet a constantly increasing air gap, so that even in this case a smaller pull-out force to open the extract part 3 is required, as this the locking effect of the pairing permanent magnet 6 / counter pole piece equivalent.

After a certain opening stroke, the lever 8 is then supported again on the downwardly moving support pin 11 or on any other support, which is clearly shown in FIG. 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, if the lever 8 is already on the support pin 11 or any other one at an early stage Support is supported, 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 from Figure 1 Id.

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 effectively until the counter pole piece 7 bears against the permanent magnet 6, as shown by the starting position according to FIG. 11a.

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 FIG. 10 shows very clearly. Notwithstanding the illustrated embodiment, the actuating device for the support pin 11 but also consist of an electric unlocking device, for example in the form of a linear movement device with a an eccentric actu- ing 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 actuating device 16 in the region of the front side 18 of the extension part 3 is provided.

Thus, by activating the actuating device 16, a user can first release the release of the support pin 11 from the front side 18 of the extension part 3 and then release the pulling part onto the pull-out part 3 by applying a pulling movement

Make opening of this extractable 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

claims

1. feeding device (5) for a in a furniture body (2) longitudinally displaceably guided extract part (3) with a force storage, tensioned when opening the pull-out part (3) and its stored force from a structurally predetermined insertion position of the pull-out part (3) released and as a pull-in force on the pull-out part (3) is transmitted, characterized in that in addition to the energy storage and to reinforce the effective pull-in forces in a certain retraction position a Permanentmagnetsys- tem (6, 7) of a permanent magnet (6) and a Gegenpolstück (7 ) is provided from a magnetizable material or a second permanent magnet (7), wherein in each case one component (6, 7) of this permanent magnet system on the furniture body (2) and the other component (6, 7) is mounted on the pull-out part (3) such that their contact surfaces during the meeting meet when inserting the extract part perpendicular to the insertion direction and the Herauszi Margins of the extract part (3) from the closed position are parallel to each other displaced.

2. Feed device according to claim 1, characterized in that the pull-out part (3) mounted component (6, 7) of the permanent magnet system at the upper end of a lever (8) is mounted, the lower end pivotable about an axis (9) on the pull-out part (8). 3) is articulated, wherein the lever (8) with respect to the vertical in the direction of the second component (6, 7) of the permanent magnet system inclined and constantly loaded by a spring in the direction of the second component (6, 7) of the permanent magnet system.

3. Feed device according to claim 2, characterized in that on the pull-out part (3) a support pin (1 1) is provided, the lever (8) on its rear side (2a) of the furniture body (2) facing bottom in a position supported, in which the two components (6, 7) of the permanent magnet system are positioned in a common altitude with their facing contact surfaces perpendicular to the insertion direction of the extension part (3).

4. Feed 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) is canceled by the support pin (11).

5. Feed device according to claim 4, characterized in that the support pin (11) with a certain play in a longitudinal guide of the extractable part (3) guided vertically adjustable and provided with a boom (12) on one with in the direction of the back (2a ) of the furniture body (2) rising or in the direction of the back (2a) of the furniture body (2) in the direction of the back (2a) sloping flanks (13a, 13b) provided slide guide (13) is guided.

6. Feed device according to one of the preceding claims, character- ized in that the body side mounted component (6, 7) of the permanent magnet system is pivotally connected about a horizontal axis and movable in the vertical direction on the furniture body (2).

7. Feed device according to one of the preceding claims, character- ized in that the maximum height adjustment of the support pin (11) is determined by the inflection point (13c) between the two flanks (13a and 13b) of the guide slot (13).

8. Feed device according to one of the preceding claims, character- ized in that the support pin (11) by conditioning the spring-loaded lever (8) is fixed in its maximum height position by tilting the support pin (11) within its guide even if the Contact of the transverse arm (12) to the slotted guide (13) is canceled.

9. Feed device according to one of the preceding claims, characterized in that the slotted guide (13) and guided thereon transverse arm (12) of the support pin (11) consist of a pair of materials with very low Gleitreibungskoeffϊzienten.

10. Feed device according to claim 1, characterized in that the extract part (3) mounted component (7) of the permanent magnet system at the upper end of a lever (8) is arranged, the lower end about an axis (9) pivotally on the pull-out part (3) is hinged, wherein the lever (8) relative to the vertical in the direction of the second component (6) of the permanent magnet system inclined and by a support pin (1 1) of an actuating device (16) is loaded.

11. Feed device according to claim 10, characterized in that the lever (8) is pressed against a stop (17) on the pull-out part (3).

12. Feed device according to claim 10, characterized in that the lever (8) by means of a spring against the support pin (11) or another support is tightened.

13. Feed device according to claim 10, characterized in that the lever (8) and a at the upper end of the lever (8) provided Gegenpolstück (7) are integrally made of a magnetizable material.

14. Feed device according to one of claims 10 to 13, characterized in that the actuating device (16) consists of a Bowden cable.

15. Feeding device according to one of claims 10 to 13, characterized in that the actuating device (16) electromotive, electromagnetically or pneumatically acts on the support pin (11).

16. Feed device according to one of claims 10 to 13, characterized in that the actuating device (16) from the front side (18) of the extractable part is triggered.