EP3050463A1 - Parallel drawer slide - Google Patents

Abstract

A parallel pull-out guide (10) according to the invention for a drawer (5) or the like extendable from a furniture carcass (2) on both sides of horizontal pull-out guides (4) comprises for each of the two drawer sides: a guide member (11) provided for attachment to a carcass side wall (3), a horizontal rack (12) provided for attachment to the drawer (5), which is guided extendably in the drawer extension direction (13) in the guide part (11) and has a horizontal rack section (14), a to the rack (12) and / or on the guide member (11) in the drawer extension direction (13) extendable guided coupling element (15) which in its extended end state about a horizontal axis tiltable between a Verriegeiungsstellung in which a drawer-side driver ( 29) is locked in the coupling element (15) in the drawer extension direction (13), and a release position, in which the driver (29) in the coupling element (15) in the drawer extension direction (13) is not locked, is stored, and a drive for the rack (12) to the rack (12) together with the coupling element (15) relative to the guide member (11) to move in the same direction, and a horizontal synchronizing shaft (19) provided with two toothed wheels (35) for attachment to the drawer (5) transversely to the drawer extension direction (13) and meshing with the horizontal rack sections (14) of the two toothed racks (12).

Description

The invention relates to a parallel pullout guide for a drawer or the like which can be pulled out of a furniture carcass via horizontal drawer slides which are present on both sides.

Such parallel slide guides are for example from the EP 0 875 178 A2 are known and serve to synchronize the extension movement of the two drawer sides together, thereby ensuring a precise parallel guidance of the drawer relative to the furniture body and to maintain this synchronization in the over-extended state of the drawer, without this over-extract to gain from a larger installation depth. For this purpose, the EP 0 875 178 A2 a meshing with a synchronous shaft of the drawer rack, which is extended in the over-extended state by an extendable further rack.

It is the object of the present invention to provide an alternative parallel extension guide in which the precise parallel guidance of the drawer is maintained even in the over-extended state of the drawer.

This object is achieved by a parallel pullout guide with the features of claim 1.

According to the invention moves the rack during the pull-out of the drawer forward over the front of the carcase, so that the synchronization is maintained even in the over-extended state of the drawer. The rack is pushed out by means of a parallel coupling element, which is in drive connection with the toothed rack via the drive. The coupling element is taken along by the driver of the drawer over a limited path, wherein the rack is also extended via the drive. The coupling element is tilted after a short travel in a release position, whereby the driver is drivingly decoupled from the coupling element. When inserting the drawer, the driver is again coupled to the coupling element, so that the rack is retracted via the drive.

As a drive for the rack is in principle any movement coupling between the coupling element and rack suitable. Particularly preferably, the drive has a gear rotatably mounted on the rack about a vertical axis, which meshes with two mutually facing vertical rack sections of the guide member and the coupling element. In this case, the rack is extended in a reduction ratio of 1: 2, ie in the drawer extension direction half as far as the coupling element. Alternatively, the drive may also be formed by a belt drive acting between the rack and the coupling element.

Preferably, the coupling element for locking the driver has a locking groove with a horizontal groove portion open in the drawer pull-out direction and an oblique groove portion adjoining the drawer pull-out direction.

Preferably, the coupling element is biased at least in the extended final state in the release position. If the release position is formed by the lower tilted position, even the weight of the coupling element can provide sufficient bias. Preferably, however, the coupling element is biased by spring force (or other external forces) in the release position. For example, act between the guide member and the coupling element, a spring which biases the coupling element in the release position.

In a particularly preferred embodiment of the invention Parallelauszugführung the coupling element is guided with a control arm on a guide surface of the rack, wherein the guide surface has a cam which deflects the coupling element in the extended final state in the release position or already shortly before reaching the solid final state by elastic deformation in the release position biased. This measure has the advantage that the movement of the drawer is not affected by an additional spring force.

Advantageously, the coupling element, at its rear end in the drawer pull-out direction, has a stop face which is offset from a guide surface and which, in the extended position, limits the tilting of the coupling element and thus defines the locking position.

In a preferred embodiment of the parallel extension guide according to the invention, the synchronous shaft is mounted in two provided for attachment to the drawer bearing blocks on which the drivers are formed. The bearing blocks are, for example, each a plastic injection molded part with molded pin-shaped drivers.

Preferably, on the body side wall, the guide member via at least one fastener fastened and the rack guided extendable via at least one fastener, all fasteners can be made identical.

The invention also relates to a piece of furniture with a furniture carcass, with at least one drawer or the like extendable from the furniture carcass via horizontal pull-out guides on both sides, and with a parallel pullout guide as described above for the at least one drawer.

Further advantages of the invention will become apparent from the description, the claims and the drawings. Likewise, the features mentioned above and the features listed further can be used individually or in combination in any combination. The embodiment shown and described is not to be understood as an exhaustive list, but rather has exemplary character for the description of the invention.

Fig. 1

eine Frontansicht einer Schublade mit der erfindungsgemäßen Parallelauszugführung;

Fig. 2

eine Explosionsdarstellung der erfindungsgemäßen Parallelauszugführung;

Fign. 3a, 3b

die erfindungsgemäße Parallelauszugführung mit einer ausfahrbaren Zahnstange, die in Fig. 3a in ihrer eingefahrenen Endstellung und in Fig. 3b in ihrer ausgefahrenen Endstellung gezeigt ist, jeweils in einer Seitenansicht;

Fig. 4

eine perspektivische Draufsicht auf die Unterseite der erfindungsgemäßen Parallelauszugführung;

Fign. 5a, 5b

die Unterseite der erfindungsgemäßen Parallelauszugführung, wenn sich die Zahnstange in ihrer eingefahrenen Endstellung (Fig. 5a) und in ihrer ausgefahrenen Endstellung (Fig. 5b) befindet;

Fign. 6a, 6b

ein verkippbares Kopplungselement der erfindungsgemäßen Parallelauszugführung in einer Verriegelungsstellung (Fig. 6a) und in einer Freigabestellung (Fig. 6b), jeweils in einer Seitenansicht; und

Fign. 7a, 7b

das Kopplungselement in seiner die Schublade in Auszugrichtung verriegelnden Verriegelungsstellung (Fig. 7a) und in seiner die Schublage in Auszugrichtung nicht verriegelnden Freigabestellung (Fig. 7b).

Show it:

Fig. 1

a front view of a drawer with the parallel extension guide according to the invention;

Fig. 2

an exploded view of the parallel extension guide according to the invention;

FIGS. 3a, 3b

the parallel extension guide according to the invention with an extendable rack, the in Fig. 3a in their retracted end position and in Fig. 3b is shown in its extended end position, each in a side view;

Fig. 4

a perspective top view of the underside of the parallel extension guide according to the invention;

FIGS. 5a, 5b

the bottom of the parallel extension guide according to the invention, when the rack in its retracted end position ( Fig. 5a ) and in its extended end position ( Fig. 5b ) is located;

FIGS. 6a, 6b

a tiltable coupling element of the parallel extension guide according to the invention in a locking position ( Fig. 6a ) and in a release order ( Fig. 6b ), each in a side view; and

FIGS. 7a, 7b

the coupling element in its locking the drawer in the extension direction locking position ( Fig. 7a ) and in its the drawer in the extension direction not locking release position ( Fig. 7b ).

In the following description of the figures identical reference numerals are used for identical or functionally identical components.

This in Fig . 1 shown furniture 1 has a furniture body 2 with two carcass side walls 3, a plurality of the furniture body 2 on both sides existing horizontal pullout guides 4 extendable drawers 5 (of which in Fig. 1 only one example shown) and parallel extension guides 10 for each of the drawers 5 on.

As in Fig. 2 shown, the parallel extension guide 10 comprises for each of the two drawer sides provided for attachment to a cabinet side wall 3 guide member 11, provided for attachment to a drawer side wall horizontal rack 12 which is guided horizontally extendable in the guide member 11 in drawer extension direction 13 and a horizontal rack section 14 , a on the rack 12 and on the guide member 11 in the drawer extension direction 13 horizontally extendable guided coupling element 15, a rotatably mounted on the rack 12 about a vertical axis 16 gear 17 and two fasteners 18 for attachment of the guide member 11 and for guiding the Rack 12 on the cabinet side wall 2. In addition, the parallel extension guide 10 comprises a provided for attachment to the drawer 4 transversely to the drawer extension direction 13 horizontal synchronous shaft 19 ( Fig. 1 ).

The guide member 11, the rack 12, the coupling member 15 and the fasteners 18 are preferably plastic injection molded parts. Unlike in Fig. 2 shown, the two fastening elements 18 can also be designed identical.

The rack 12 and the coupling element 15 are in Fig. 3a in their retracted end position and in Fig. 3b shown in its extended end position.

As in Fig. 4 shown, the gear 17 is disposed between two mutually facing vertical rack sections 20, 21 of the guide member 11 and the coupling member 15 and meshes with both vertical rack sections 20, 21. The rack 12 is connected to the coupling element 15 via the gear 17 in the drawer extension direction thirteenth motion-coupled, because of the stationary vertical rack portion 21 of the guide member 11 in a reduction ratio of 1: 2, ie the rack 12 is extended in the drawer extension direction 13 each half as far as the coupling element 15. The rack 12 and the coupling element 15 are in Fig. 5a in their retracted end position and in Fig. 5b shown in its extended end position.

As long as the coupling element 15 has not yet reached its extended end position, the coupling element 15 is in the in Fig. 6a shown locking position in which it is held by the guide member 11 and the rack 12 unverkippbar. For this purpose, the coupling element 15 rests with a top surface 22 on a lower guide surface 23 of the rack 12, while its counter to the drawer extension direction 13 directed, rear end with a lower guide surface 24 rests on top of an upper guide surface 25 of the guide member 11 and be in drawers -Extraction direction 13 directed, front end rests with a control arm 26 on an upper guide surface 27 of the rack 12. At its outermost rear end, the coupling element 5 has an abutment surface 28 which is set back upwards in relation to the lower guide surface 24.

The coupling element 15 has for a designed as a horizontal pin driver 29 of the drawer 5 a lateral locking groove 30 with a drawer in the extension direction 13 open horizontal groove portion 31 and a it against the drawer extension direction 13 subsequent oblique groove portion 32 on. In the locking position, the driver 29 is located in the oblique groove portion 32 and is thus coupled in motion with the coupling part 5 in and against the drawer extension direction 13.

At the latest when the coupling element 15 has reached its extended end position, on the one hand, the coupling element 15 has moved with its lower guide surface 24 of the guide member 11 beyond the upper guide surface 25, so is no longer on the upper guide surface 25. On the other hand, the control arm 26 has accumulated on a cam 33 of the upper guide surface 27 of the rack 12, whereby the coupling element 15 about a horizontal axis (not shown) in the in Fig. 6b shown release position is tilted, in which the stop surface 28 rests on the upper guide surface 25. In this release position, the driver 29 is at the level of the horizontal groove portion 31 and is therefore not locked in the coupling element 15 in the extension direction 13.

As in Fig. 1 shown, the synchronizing shaft 19 is rotatably mounted in two fixed to the drawer 5 bearing blocks 34 and has two gears 35 which mesh with the horizontal rack portions 14 of the two racks 12. The drivers 29 may each be formed on the bearing blocks 34.

• Bei geschlossener Schublade 5 befindet sich das Kopplungselement 15 in seiner Verriegelungsstellung, in welcher der Mitnehmer 29 in dem schrägen Verriegelungsabschnitt 32 verriegelt ist ( Fig. 7a ).

The operation of the parallel extension guide 10 is as follows:

• When the drawer 5 is closed, the coupling element 15 is in its locking position, in which the driver 29 is locked in the oblique locking section 32 ( Fig. 7a ).

When the drawer 5 is pulled out, takes the locked driver 29, the coupling element 15 in the drawer extracting direction 13, which is extended via the gear 17 and the rack 12 forward over the front of the carcass (stroke eg 64mm). Just before the coupling element 15 reaches its extended end position, the control arm 26 runs on the cam 33, whereby the coupling element 15 is biased by elastic deformation in the release position. In the extended end position, the coupling element tilts 5 therefore in the release position ( Fig. 7b ) and is not taken by the now no longer locked driver 29 in the extension 13.

By the gears 35 of the synchronous shaft 19 mesh with the horizontal rack sections 14 of the two-sided racks 12, the extension movement of the two drawer sides is synchronized with each other. Due to the extended racks 12 this synchronization is maintained in the over-extended state of the drawer 5.

When inserting the drawer 5, the driver 29 enters the horizontal groove portion 31 and tilts in cooperation with the oblique groove portion 32, the coupling element 15 in its locking position. The coupling element 15 is again coupled in motion with the driver 29, so that the rack 12 is retracted via the gear 17.

Claims (10)

Parallel pull-out guide (10) for a drawer (5) or the like extending from a furniture carcass (2) on both sides of horizontal pull-out guides (4), comprising for each of the two drawer sides: a guide member (11) provided for attachment to a carcass side wall (3), a horizontal rack (12) provided for attachment to the drawer (5), which is guided extendably in the drawer extension direction (13) in the guide part (11) and has a horizontal rack section (14), a to the rack (12) and / or on the guide member (11) in the drawer extension direction (13) extendable guided coupling element (15) which in its extended end state about a horizontal axis tiltable between a locking position in which a drawer-side driver ( 29) is locked in the coupling element (15) in the drawer extension direction (13), and a release position, in which the driver (29) in the coupling element (15) in the drawer extension direction (13) is not locked, is stored, and a drive for the rack (12) to the rack (12) together with the coupling element (15) relative to the guide member (11) to move in the same direction, and comprising a horizontal synchronizing shaft (19) provided with two gears (35) for attachment to the drawer (5) transversely to the drawer extension direction (13) and meshing with the horizontal rack sections (14) of the two toothed racks (12). Parallel pullout guide according to claim 1, characterized in that the drive on the rack (12) about a vertical axis (16) rotatably mounted gear (17), with two facing each other vertical rack portions (20, 21) of the guide part (11) and the coupling element (15) meshes. Parallel pullout guide according to claim 1, characterized in that the drive is formed by a between the rack (12) and the coupling element (15) acting belt drive. Parallel extension guide according to one of the preceding claims,
characterized in that the coupling element (15) for locking the driver (29) has a locking groove (30) with a horizontal groove section (31) which is open in the drawer extension direction (13) and adjoins the drawer extension direction (13), having oblique groove portion (32). Parallel extension guide according to one of the preceding claims,
characterized in that the coupling element (15) is biased at least in the extended final state in the release position. Parallel extension guide according to one of the preceding claims,
characterized in that the coupling element (15) with a control arm (26) on a guide surface (27) of the rack (12) is guided and in that the guide surface (27) has a cam (33), the coupling element (15) in the extended Deflects the final state into the release position. Parallel extension guide according to one of the preceding claims,
characterized in that the coupling element (15) has at its in drawer extracting direction (13) rear end opposite to a guide surface (24) set back stop surface (28). Parallel extension guide according to one of the preceding claims,
characterized in that the synchronous shaft (19) in two for attachment to the drawer (5) provided bearing blocks (34) is mounted and that the drivers (29) on the bearing blocks (34) are formed. Parallel extension guide according to one of the preceding claims,
characterized in that the guide part (11) on the body side wall (3) via at least one fastening element (18) can be fastened and the rack (12) via at least one fastening element (18) on the body side wall (3) is guided extendable. Furniture (1) with a furniture body (2), with at least one drawer (5) or the like extendable from the furniture body (2) on both sides of horizontal drawer slides (4) and with a parallel drawer slide (10) according to one of the preceding claims at least one drawer (5).

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