WO2009053312A2

WO2009053312A2 - Telescoping drawer arrangement

Info

Publication number: WO2009053312A2
Application number: PCT/EP2008/064026
Authority: WO
Inventors: Siegfried Grasy; Roland KÜMMEL; Claudia Rupp; Susanne Wolhein
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2007-10-26
Filing date: 2008-10-17
Publication date: 2009-04-30
Also published as: DE102007051343A1; WO2009053312A3

Abstract

The invention relates to a telescoping drawer arrangement comprising two telescoping drawers (4, 5) each having a rail fixed to a common frame, at least one part (6, 14, 16) which is mobile in the direction of the depth of the telescoping drawer arrangement, and a storage part held on the mobile parts (6, 14, 16). Each mobile part (6, 14, 16) and the storage part comprises pairs of profiled elements (8, 33) that can be fitted together in the direction of the depth, and two overlapping catch steps (20, 28) oriented transversally to the direction of the depth and used to lock the profiled elements (8, 33) when they are fitted together.

Description

Telescopic extension arrangement

The present invention relates to a telescopic extension assembly with two telescopic extensions, each having a on a common frame such as a housing receiving stationary rail and at least one in the depth direction of the telescopic extension assembly and the housing movable rail, and a storage part such as a plate or a box which is held on the movable rails via at least a pair of adapters.

Such a telescopic extension arrangement, used for holding and guiding a pull-out box in a refrigerator, is described for example in DE 10 2005 021 591 A1. The support part of this known arrangement is anchored to the telescopic extensions by projections of the adapter engage positively in recesses of the support member. There are different types of adapters provided; one of these types secures the storage part by latching on its projection; For this purpose, the storage part must be plugged from above on the projection. In order to be able to latch the storage part onto the projection, there must be sufficient space above the adapter in order to be able to position the support part there. This is particularly problematic in a partial drawer, in which the freedom of movement of the movable rail sometimes not sufficient to pull out a supported by the rail storage part, in particular a drawer, completely under a tightly mounted support plate.

Although the telescopic extension is a full extension, while it is generally possible to pull out the movable rail, which carries the adapter, far enough to put the storage part from above on the adapter can, but it is difficult when placing the filing of the recesses immediately to put over the projections of the adapter. If this is not successful and adjacent to the recesses adjacent areas of a bottom of the support member on the projections, so a user will generally try to move the storage part in the depth direction of the housing to position the recesses over the projections of the adapter. However, the moving rails of high-quality, smooth-running telescopic extensions tend to to follow the movement of the storage part, so that the attempt to bring projections and recesses to cover, fails.

Object of the present invention is to provide a telescopic extension assembly in which the mounting of the storage part is simplified on the movable rails.

The object is achieved by having in a telescopic extension assembly with two telescopic extensions, each having a stationary frame on a common rail and at least one movable in the depth direction of the telescopic extension assembly, and a storage part, which is held on the moving parts, each movable part and the Filing part in pairs in the depth direction plugged into each other contours and two overlapping, aligned transversely to the depth direction latching steps for locking the contours in the nested state. Thus, it is possible to initially set the storage part in an unspecified position on the movable rails and then, regardless of whether together with the movable rails or without them to move in the depth direction until the contours interlock and engage the locking steps together , After latching the storage part and movable rails are coupled to each other, so that the storage part can no longer slip with respect to the movable rails when pulled out and pushed in.

The distance of the telescopic extensions from each other may vary due to manufacturing tolerances, in particular of the frame. To compensate for such manufacturing tolerances, without taking too much mobility of the storage part in the width direction of the telescopic extension arrangement in purchasing, a game in the width direction of the telescopic extension arrangement between the nested contours is preferably greater on a first of the two telescopic extensions than on the second telescopic extension. So limits the smaller game on the second telescopic extension, the mobility of the storage part in the width direction, while the game on the first telescopic extension is crucial for the compensable tolerances.

Such a different game is particularly feasible by that of the contours, which is formed on the movable part, at the two telescopic extensions is different widths. The contour formed on the storage part, however, can at both Pages the same width. Since the adapters are generally smaller than the storage part, it is usually possible for them to provide two differently wide versions of the interlocking contours at a lower cost than at the storage part. Under certain circumstances, it may also be expedient if a first of the contours of the storage part, which is plugged together with a contour of the first telescopic extension, a different width than a second of the contours of the storage part, which is plugged together with a contour of the second telescopic extension.

In order to provide these different width contours of the support member, one of them may conveniently be formed integrally with a wall of the support member and the other attached to the support member.

Preferably, then the other contour is locked in a downwardly open groove of the support member.

From a manufacturing point of view, it is preferred that the contour of the support part is a projection and that of the movable part of the telescopic extension is a recess.

In order to eliminate the overlap of two adjacent latching steps of the support member and the telescopic extensions, preferably at least one of these latching steps is vertically movable. Thus, the width of the overlap of the latching steps or the deflection required to cancel the overlap is independent of manufacturing tolerances of the telescopic extension assembly in its width direction.

The movable latching step is preferably arranged on an elastically movable lever.

In order to make the release of the catch simple, the lever preferably has an actuating section projecting beyond the latching step.

The lever is preferably mounted on the support member so as to be movable therewith and easy to locate for a user viewing the support member, even when the user is looking at the support member from one direction, from which the lever is not directly visible is. Preferably, the lever is integrally connected to a base fixedly mounted on the support part.

Alternatively, the lever can also be connected via a hinge with a base fixedly mounted on the support part.

Such a lever is preferably acted upon by a spring in the overlapping position of the latching steps.

The spring can be received in a cavity of the base and thus protected from damage.

A particularly advantageous, because easy to install construction according to the lever is secured to the base by a latching connection, and the latching connection defines a stop position of the lever in which the latching steps overlap.

The movable parts of the telescopic extensions preferably comprise a movable rail and at least one adapter fixed to the movable rail, on which the contours and the latching steps of the moving parts are arranged.

In order to keep the number of required items low, preferably one of the contours and one of the latching steps are realized in a same adapter.

If the storage part is held on each rail by at least one front and one rear adapter, it is sufficient if the latching steps are provided only on the respective front adapters of the rail.

The rear adapters can then be identical on both rails and each have two different width contours.

It is particularly preferred that the two recesses are arranged opposite to each other on the rear adapters and that the rear adapters are mounted on the two pull-out rails in a different orientation, so that they Contours of the support part show complementary contours of different widths.

Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. Show it:

Fig. 1 is a schematic view of a refrigerator with a telescopic extension arrangement according to the invention;

Fig. 2 is a partial perspective view of an extraction box and a movable rail carrying it;

Fig. 3 is a partial section through the arrangement of Fig. 2 in

Depth direction showing the drawer in an unlocked state;

Fig. 4 is a view similar to Figure 3, showing the drawer in locked state on the rail;

Fig. 5 is a partial perspective view of the bottom of

Pullout box showing an elastic detent lever attached to the pullout box;

Fig. 6 is a partial perspective view of the drawer and a first movable rail showing an adapter of a first type for latching with the lever;

Fig. 7 is a perspective view similar to Fig. 6, showing a to

Locking with the locking lever provided adapter of a second type on a second movable rail opposite the second movable rail shows; Fig. 8 is a partial perspective view of an extract box, the one

Locking lever according to a second embodiment of the invention shows;

Fig. 9 is a horizontal section through the drawer and the adapter carrying him, the compensation of

Manufacturing tolerances illustrated;

Fig. 10 is a locking lever and the locking lever with the

Pull-out box connecting socket in exploded view;

11 shows the locking lever and the base of Figure 10 in the assembled state ..;

Fig. 12 is a locking lever and a socket according to another

Design, in exploded view;

FIG. 13 shows the locking lever and the base of FIG. 12 in the assembled state; FIG. and

14 is a longitudinal section through the arrangement of FIG. 13th

Fig. 1 shows a simplified perspective view of a refrigeration device with a body 1 and a door 2, in the interior of a telescopic extension assembly is attached to a pull-out box 3 shown pulled out. The drawer is held by a left telescopic extension 4 and a right telescopic extension 5. The telescopic extensions 4, 5 are executed here as full extension, each with a anchored to a side wall of the body 1, in Fig. 1 not visible stationary rail, a drawer 3 supporting and with this movable rail 6 and an intermediate rail 7, which couples the stationary rail and the movable rail 6 to each other. For the telescopic extensions 4, 5 also partial extracts could alternatively be used, that is, extracts in which the drawer carrying the movable rails are guided directly to the stationary rails. The drawer 3 has two side walls 1 1, from the upper edges of which webs 12 extend laterally outward and connect to the outer edges of the webs 12 parallel to the side walls 1 1 downwardly extending ribs 13. The side walls 11, webs 12 and ribs 13 each form a downwardly open, the side walls 11 stiffening U-profile.

Jump over the lower edge of the rib 13, as shown in Fig. 2, in front of two hooks 8, 9 with each rearwardly facing tip. The hooks 8, 9 are provided to engage in front open recesses of adapters 14 and 15, respectively, which are mounted on the movable rail 6.

To illustrate the anchoring of the pull-out box 3 to the adapters 14, 15 are shown in FIGS. 3 and 4 two longitudinal sections through the arrangement of FIG. 2 along a plane passing through the rib 13 cutting plane, one, in Fig. 3, in an unlocked Configuration according to Fig. 2, and one, in Fig. 4, in a latched configuration.

The configuration of Fig. 3 corresponds to the state which results when the drawer 3 from above on the pulled-out movable rails 6 of the telescopic extensions 4, 5 is placed. The front hook 8 engages from above between two extending in the depth direction side walls 17 of the front adapter 14 a. The side walls 17 are connected at their lower edge by a bottom plate 18 extending over the entire length of the side walls 17 and by a ceiling plate 19 in a rear area of their upper edges. Along a front edge of the bottom plate 18 extends transversely to the sectional plane of Fig. 3, a web 20, whose height is less than that of the side walls 17. A part of a bracket having an opening

21 of the movable rail 6 passes through to anchor the adapter 14 is, with

22 denotes.

The construction of the rear adapter 15 is similar in basic features to that of the front adapter 14, so that the same reference numerals are used to denote corresponding parts of the two adapters 14, 15. As with the front adapter 14, also at the rear 15, the side walls 17, the bottom plate 18 and the top plate 19 define a passageway provided to insert the hook 9 therein. Unlike the front adapter 14 of the rear adapter 15, the passage is divided into two sections 23, 24, which differ in their width.

In the configuration of FIG. 4, the hooks 8, 9 of the pull-out box 3 are inserted into the passages of the adapters 14, 15. By the cover plates 19 of the adapters 14, 15 respectively engage between the hooks 8, 9 and the lower edge of the rib 13, the drawer 3 is locked in the vertical direction on the movable rail 6. He is also locked in the horizontal direction by a locking projection 28 of a flexible latching lever 27 which rests behind the at the back of the web 20 of the front adapter 14. The locking lever 27 depends integrally with a in Fig. 3 shown as a dashed outline socket 29 which secured in the formed by side wall 11, pin 12 and rib 13 U-profile, here by means of engaging in a window 30 of the rib 13 locking projection 31 is anchored.

The latching projection 28 of the latching lever 27 has an approximately triangular contour, with an oblique rear side, which displaces the locking lever 27 elastically upwards when pushed over the web 20 of the adapter 14, and a steep front, whose shown in Fig. 4 Overlapping with the web 20 can only be reversed by a projecting over the locking projection 28 forwardly projecting portion 32 of the locking lever 27 is taken by the user and pushed upwards.

The locking lever 27 allows to lock the drawer 3 to the movable rails 6 by starting from the configuration of Fig. 3, the drawer 3 to the left, inside the body 1 is moved into. The movable rails 6 are taken so long until they reach their inserted stop position inside the body 1; Only then does the pull-out box 3 start to glide over the rails 6 towards the rear (to the right in FIGS. 3 and 4) until the latching lever 27 snaps onto the web 20. Conversely, to release the drawer 3 from the rails 6 of the drawer first be pulled out of the body 1 until the rails 6 reach an extended stop position; only then slides, if the locking lever 27 is released, the drawer on the rails 6 forward until the Hook 8, 9 released from the passages of the adapter 14, 15 and the drawer 3 can be raised.

Fig. 5 illustrates in a perspective view of the structure of the pull-out box 3 at the level of the front hook 8. It can be seen that it is the front hook 8 is a projection of the rib 13, which is not wider than this. Above the hook 8, the base 29 of the locking lever 27 between the rib 13 and the side wall 11 is locked.

Fig. 7 shows the same area of the pull-out box 3 as Fig. 5, but from a slightly different angle, and a piece of the movable rail 6 of the right telescopic extension 5 with the front adapter 14. Here is clearly that of the side walls 17, the bottom plate 18 and the cover plate 19 to detect limited passage 33 which is provided to receive the tip of the hook 8, and the same as the portion 23 of the passage of the rear adapter 15 is substantially wider than the engaging hooks 8 and 9 therein. The anchoring of the pull-out box 3 on the right telescopic extension 5 is therefore playful in the width direction of the body 1. This game has no effect on the security of the locking of the locking projection 28 on the web 20, since to release the locking of the locking projection 28 must be deflected vertically.

Fig. 6 shows a perspective view of a front adapter 16 on the movable rail 6 of the left telescopic extension 4. Also in this adapter 16 side walls 17, bottom plate 18 and cover plate 19 define a passage 33, but this passage 33, unlike that of the adapter 14, only slightly wider than the hook 8, which he should take. In order to facilitate the introduction of the hook 8 in the passage 33, the latter is flanked on both sides by chamfers 34.

Also, on the left edge of the pull-out box 3, as shown in Fig. 6, an elastic locking lever 27 is provided. When the hook 8 engages in the passage 33 of the adapter 16 and the locking lever 27 is engaged on the web 20 of the adapter 16, the drawer 3 is fixed to the rail 6 of the left telescopic extension 4 practically free of play. Fig. 8 shows a schematic horizontal section through the drawer and the supporting him adapter of the telescopic extensions 4, 5. In a rear portion of the telescopic extension 4, an adapter 15 of the type already described with reference to FIGS. 3 and 4 is mounted, but in one compared to its placement on the telescopic extension 5 rotated by 180 ° orientation in which the narrow portion 24 of the passage is swept forward and receives the hook 9. The drawer 3 is thus on the left telescopic extension 4 in all three spatial directions fixed substantially free of play, while between the drawer 3 and the right telescopic extension 5 game in the width direction of the body 1 is present. By this game manufacturing variations of the width of the body 1 and the pull-out box 3 and also different thermal expansion coefficients of the body 1 and the pull-out box 3 can be compensated.

9 shows a perspective partial view of the pull-out box 3 according to a second embodiment of the invention. To see is a front portion of the left side wall 11 of an extension box 3 with an elastically deflectable locking lever 27, the base 29 is fixed in the of the side wall 1 1, the web 12 and the rib 13 limited, downwardly open groove. The left rib 13 does not carry a hook 8 of the type shown in Fig. 6; instead, a hook 37, which is substantially wider than the wall thickness of the rib 13, formed integrally with the base 29. On the right side of the pullout box, on the other hand, with the rib 13, one-piece hooks of small width, such as the hooks 8, 9 illustrated in FIGS. 7 and 8, are provided. The use of the wide hook 37 makes it possible to form the receiving adapter exactly mirror image of the adapter 14, with a wide passage 33 and yet to fix the drawer 3 in the width direction substantially free of play by the width of the hook 37 fills the passage 33.

FIGS. 10, 11 show in exploded or assembled representation a locking lever 27 and a socket 29 according to a third embodiment of the invention. The base 29 of this embodiment is analogous to the one shown in FIG. 9 with a wide hook 37 projecting towards the rear, but it is understood that this hook can also be formed, for example, by a narrow hook, integral with the rib 13 of the pull-out box 3 in FIG 7 can be replaced. In the elongated base 29 is a spindle 38 bearing side walls 39 limited recess 40 is formed, which is provided to receive a molded in one piece with the locking lever 27 made of plastic hairpin spring 41. The hairpin spring 41 protrudes from a base plate 42 of the locking lever 27 opposite to the locking projection 28 and is flanked on both sides by a fork 43 forming ribs 44. In the finished assembled state of FIG. 11, the hairpin spring 41 latched in the recess 40 prevents the fork 43 from disengaging from the stub axles and at the same time pushes the base plate 42 away from the base 29, in the perspective of FIGS. 10 and 11 , in the direction of a position in which the latching projection 28 engages behind the web 20 of the adapter 14 or 16. By pressing the operating portion 32 of the locking lever 27 against the force of the spring 41 against the base 29, a user can cancel the locking of the pull-out box 3 to the adapters 14, 16.

FIGS. 12, 13 show analogous views to FIGS. 11, 12 according to a further developed embodiment. Again, a hairpin spring 41 of the locking lever 27 engages in a recess 40 of the base 29, and the force of the spring 41 pushes the locking projection 28 of the locking lever 27 from the base 29 and drives him to a position in which he (not shown ) Web 20 of a front adapter 14 or 16 overlaps and locks the drawer 3 to the adapter. A stop position of the latching lever 27 is set here by a latching hook 46, which, as shown in the section of FIG. 14, intersects an opening 47 of the latching lever 27 and engages an edge of its base plate 42. The spring 41 keeps the base plate 42 pressed against a latching step 48 of the latching hook 46.

A pivot axis of the locking lever 27 is formed by a rib 49 of the base 29, which protrudes from a side wall in the substantially cuboid recess 40, and the rib 49 embracing fork 43 of the locking lever 27. The latching hook 46 is formed in a section of the rib 48 opposite side wall of the recess 40. On both sides of the cutout pieces 50 of the side wall (see Fig. 13) limit the freedom of movement of the locking lever 27 in the longitudinal direction of the base 29, (which is also the depth direction of the body 1) so that the locking lever 27 not by pulling in the longitudinal direction of the Socket 29 can be solved.

Claims

claims

1. Telescopic extension assembly with two telescopic extensions (4, 5), each having a on a common frame (1) stationary rail and at least one in the depth direction of the telescopic extension assembly movable part (6, 14, 15, 16), and a storage part (3) , which is held on the movable parts (6, 14, 15, 16), characterized in that each movable part (6, 14, 15, 16) and the storage part (3) can be plugged into one another in the depth direction (8, 9 , 37, 23, 24, 33) as well as two latching steps (20, 28) aligned with one another and aligned transversely to the depth direction for locking the contours (8,

9, 37, 23, 24, 33) in the nested state.

2. Telescopic extension arrangement according to claim 1, characterized in that a measured in the width direction of the telescopic extension arrangement game between the nested contours (8, 9, 37, 23, 24, 33) on a first (5) of the two telescopic extensions (4, 5) is greater than at the second (4).

3. Telescopic extension arrangement according to claim 2, characterized in that that of the contours formed on the movable part (6, 14, 15, 16) (23, 24), at the two telescopic extensions (4, 5) has different widths.

4. Telescopic extension arrangement according to claim 2, characterized in that a first of the contours (8, 9) of the storage part (3), which is mated with a contour (23) of the first telescopic extension (5), has a different width than a second ( 37) of the contours of the storage part, which is mated with a contour of the second telescopic extension (4).

5. telescopic extension arrangement according to claim 4, characterized in that of the first and the second contour (8, 9, 37) one (8, 9) formed integrally with a wall (13) of the support part (3) and the other (37) is attached to the support part (3).

6. Telescopic extension arrangement according to claim 6, characterized in that the other contour (37) is latched in a downwardly open groove of the support part (3).

7. Telescopic extension arrangement according to one of claims 2 to 6, characterized in that the contour of the support part (3) has a projection (8, 9, 37) and that of the movable part (6, 14, 15, 16) has a recess (23, 24, 33).

8. Telescopic extension arrangement according to one of the preceding claims, characterized in that at least one (28) of two adjacent latching steps (20, 28) for lifting the overlap is vertically movable.

9. Telescopic extension arrangement according to claim 8, characterized in that the vertically movable latching step (28) on the support part (3) is provided.

10. telescopic extension arrangement according to claim 8 or 9, characterized in that the movable latching step (28) is arranged on an elastically movable lever (27).

11. Telescopic extension arrangement according to claim 10, characterized in that an actuating portion (32) of the lever (27) beyond the latching step (28) also protrudes.

12. Telescopic extension arrangement according to claim 10 or 11, characterized in that the lever (27) on the support part (3) is mounted.

13. Telescopic extension arrangement according to claim 12, characterized in that the lever (27) with a fixed to the support part (3) mounted base (29) is connected.

14. Telescopic extension arrangement according to claim 12, characterized in that the lever (27) via a hinge (38, 43, 48, 43) with a fixed to the support part (3) mounted base (29) is connected.

15. Telescopic extension arrangement according to claim 14, characterized in that the lever (27) by a spring (41) in the overlapping position of the latching steps (20, 28) is acted upon.

16. Telescopic extension arrangement according to claim 15, characterized in that the spring (41) in a cavity (40) of the base (29) is accommodated.

17. Telescopic extension arrangement according to one of claims 14 to 16, characterized in that the lever (27) on the base (29) is secured by a latching connection, and that the latching connection defines a stop position of the lever (27), in which the latching steps ( 20, 28) overlap.

18. Telescopic extension arrangement according to one of the preceding claims, characterized in that each movable part (6, 14, 15, 16) a movable rail (6) and at least one of the movable rail (6) attached

Adapter (14, 15, 16), and that the contours (23, 24, 33) and the latching steps (20) of the moving parts on the adapters (14, 15, 16) are arranged.

19. telescopic extension arrangement according to claim 18, characterized in that in a same adapter (14, 16) one of the contours (33) and one of the latching steps (20) are realized.

20. Telescopic extension arrangement according to claim 18 or 19, characterized in that the storage part (3) on each rail (6) by at least one front

(14, 16) and a rear adapter (15) is held, wherein the latching steps (20) only on the respective front adapters (14, 16) of the rails (6) are provided.

21. Telescopic extension arrangement according to claim 20, characterized in that the rear adapters (15) of both rails (6) are identical and each have two different width contours (23, 24).

22. telescopic extension arrangement according to claim 21, characterized in that the two contours (23, 24) opposite to each other at the rear adapters (15) are arranged and that the rear adapter (15) of the two extracts (4, 5) the contours (8 , 9) of the support part (3) each present different widths complementary contours (23, 24).

23. Household appliance with a telescopic extension arrangement according to one of the preceding claims.

24. Household appliance according to claim 23, characterized in that it is a refrigerator or freezer.