Drawer made of plastics material

(42) Date of commencement of the patent: 15. 1.1990 (45) Date of issue: 10. 7.1990

<td>(30) Priority:</td><td>(73) Patent owner:</td>

<td>21. 5.1981 DE 3120181 claims.</td><td>PAUL HETTICH GMBH &amp; CO. D-4983 CHURCH LENGTH (DE).</td>

<td>(56) Documents:</td><td></td>

<td>AT-PS 355756 DE-AS2823251 DE-0S2751412</td><td></td>

(54) PLASTIC-MANUFACTURED DRAWER (57) The invention relates to a drawer made of plastic with a front side arranged, parallel to the front side alignable front panel (2) and with in cross-section downwardly open hollow chambers (4) forming side walls (3), in which in the front area with tightening cams (11) provided rotary latch (8) are arranged, engage in the retaining elements attached to the front panel, each rotary bolt (8) being equipped with a transverse bolt (9), on the one at the front end of a cantilever (17) integrally formed fork (18) can be snapped as a holding element, the outside of at least one tightening curve (11) of the rotary bolt (8) can be engaged behind, the cantilever (17) being held on the front panel (2) and movable transversely to its longitudinal axis perpendicular to the front panel (2).

AT 390 872

<img file="AT390872B_D0001.tif" />

wrottbms

No. 390 872

The present invention relates to a drawer made of plastic with an end face arranged, parallel to the front side orientable front panel and with cross-section downwardly open Hohlkammem forming side walls in which provided in the front with tightening cams rotary bars are arranged, engage in the attached to the front panel holding elements ,

In the known drawers of the aforementioned type, the rotary latch are designed in the manner of an eccentric closure, as is well known in the furniture industry. As holding elements undercut and thus a head-bearing bolts are used, which must first be introduced with her head in an insertion of the rotary latch, by subsequent rotation, the tightening curves of the rotary latch engage behind the heads of the bolt, so that now a certain detention of the front panel is guaranteed. After aligning the front panel, the rotary latches are finally tightened.

To attach the front panel so it is necessary to perform two operations, namely once to introduce the bolt in the rotary latch and then to rotate the two rotary latch in a certain tightening position.

The present invention has for its object to make a drawer of the generic type so that the front panel can be fixed in a single operation on the drawer in a Vonnontagestellung.

The solution of this problem consists according to the invention in that each rotary latch is equipped with a cross bolt on which a front end of a boom molded fork is aufschnäppbar as holding element, the outside of at least one tightening curve of the rotary latch is engaged behind, the boom on the Held front panel and is movable transversely to its longitudinal axis perpendicular to the front panel.

By the construction according to the invention, it is possible to set the front panel in a single operation in a pre-assembly position on the drawer body, since only the Aufschnäppen the forks on the cross bolt of the rotary latch is required. Through this Schnäppverbindung the front panel is fixed so far that they can not be solved automatically from the drawer body, the drawer with provisionally fixed front panel can thus be easily transported to another workplace, where, for example, the final determination and adjustment of the front panel should be made.

An advantageous development of the subject invention is that each rotary latch is einschnäppbar in an open towards the back of the drawer, fork-like guide part.

It is expedient if the fork-like guide part is formed on an insert part, wherein the insert part is inserted into the hollow chamber formed by a side wall.

Such a solution makes it possible, without changing the basic shape of a plastic drawer to install the necessary components in the Hohlkammem, so that the disadvantage is avoided, the respective body of the drawer only for a certain type of mounting the front panel.

According to a further aspect of the invention, it is provided that the rotary latch are each provided with only one tightening curve, that the cross bolt projecting to that side, in which the tightening curve is provided, and that on the opposite side of the rotary bolt, a bearing pin is formed.

This ensures that the rotary latch have a symmetrical design, are stored twice and both right and left are usable.

A Vorfixierung the rotary latch is made possible in that each rotary latch has at its periphery two notches, which are arranged offset diametrically against each other, and that on the insert a locking lug is formed, which is einschnäppbar each in one of the notches.

A further embodiment of the invention provides that an insertion is limited by the tightening curve of the rotary latch, which points at the rear of the drawer and in opposite to the operative position rotated by 180 ° position to the front of the drawer in befindlichem in operative position rotary latch with the fork engaging tightening curve, wherein the two layers of the rotary bolt are each fixed by one of the notches and the locking lug engaging therein.

By this measure it is ensured that during assembly of the front panel safe imports of the forks in the rotary latch is possible without the rotary latch must be placed during insertion into a predetermined position.

If the bearing journal of each rotary bolt is provided with a transverse slot arranged on the head side, the rotation of this rotary bolt is possible with the aid of simple tools in the form of screwdrivers.

According to a further aspect of the invention it is provided that the fork of each arm is provided in the region of their free ends with locking lugs facing each other, whose clear distance from each other is smaller than the outer diameter of the transverse pin.

As a result, a snap connection and thus a certain positive engagement of the parts to be joined and thus a simple pre-assembly is possible.

In particular manufacturing technology, it is advantageous if the arms are each made in one piece with a retaining plate which can be fastened to the front panel

In order to enable a space-saving design, it is provided that the boom in the region in which the tightening curve of the rotary latch engages behind the fork, are provided with a recess.

An additional improvement of the pre-assembly and possible adjustment of the front panel is then achieved

-2Nr. 390 872 when the facing surfaces of end-side drawer walls and the holding plates are provided with a cross-stroke-like structuring and these walls are partially provided with resilient tabs, which protrude relative to the front plate facing surface of the walls.

In this way it is achieved that even in the preassembled state a certain holding force holds the front panel in a einjustierten each position before the rotary latch are finally tightened.

An advantageous embodiment of the invention is illustrated in the accompanying drawings and will be described in more detail below.

Show: 1 a perspective view of a manufactured from plastic drawer with it to be fastened front panel, Fig. 2 a partial section along the line (Π - Π) in Fig. 1, shown after the determination of the front panel, Fig. 3 a section along the line (ΙΠ - ΙΠ) in Fig. 2, Fig. 4 a section along the line (IV - IV) in Fig. 3, Fig. 5 a view of the essential connecting means by means of which the front panel is fixed to the drawer body, Fig. 6 the in Fig. 1 with (VI) designated detail in an enlarged view, Fig. 7 a partial section along the line (VH - VH) in Fig. 6th

In Fig. 1 a made of plastic drawer (1) is shown, on which a front panel (2) is attachable end.

The thrust direction of the drawer (1) is characterized by the double arrow (A) shown in FIG.

The side walls (3) of the drawer (1) are designed in a known manner so that they form downwardly open Hohlkammem (4), which is apparent in particular from FIGS. 2 and 6.

The hollow chambers (4) are closed in the front area to the front by a respective end-side wall (5).

In the hollow chambers (4) insert parts (6) are used, which are provided with a to the back of the drawer (1) towards open, fork-like guide member (7). In this guide parts (7) in each case a rotary latch (8) can be used. The rotary bolt (8) are provided with a transverse pin (9) and with a bearing pin (10), wherein the transverse pin (9) to that side of the rotary bolt (8) protrudes, in which the rotary latch (8) with a tightening curve (11 ) is provided which is arranged eccentrically to the axis of rotation of the transverse pin (9) and bearing pin (10). The bearing pin (10), whose diameter is larger than the diameter of the transverse pin (9), projects to the other side beyond the dehriegel (8) also. The rotary latch (8) can be snapped into the fork-like guide member (7), so that the rotary latch (8) can be rotated about the axis of transverse pin (9) and bearing pin (10), a displacement of the rotary latch (8) transversely to said Längsachs e of transverse pin (9) and bearing pin (10) but no longer possible.

The rotary latch (8) are equipped with two circumferentially mounted and offset by 180 ° staggered notches (12) and on the insert (6) has a latching nose (13) is formed, which engages in one of the notches (12). By this measure, the rotary latch (8) can be fixed in two different Verdrehpositionen, on the one hand in its operative position, the from Fig. 3 shows, and on the other hand in a comparison with FIG. 3 rotated by 180 ° position, so that the tightening curve (11) limited insertion opening (14) to the front side of the drawer (1).

On the front plate (2) a holding plate (15) is fixed, which is made in the illustrated exemplary embodiment of plastic and provided with two fastening plugs (16). The retaining plate (15) can also have through holes in addition to the fastening dowels (16), so that an optional fixing of the retaining plate (15) on a front plate (2) via the dowels (16) and / or mounting screws is possible.

Integrally formed on the holding plate (15) is a boom (17) whose longitudinal axis is perpendicular to the front plate (2) when the holding plate (15) on the front panel (2) is fixed. At the free end of the boom (17) a fork (18) is formed, which is aufschnäppbar on the transverse bolt (9) of the rotary latch (8). For this purpose, the fork (18) is provided in its opening region with two locking lugs (19) facing each other whose clear distance from one another is smaller than the outer diameter of the transverse pin (9).

The boom (17) of the holding plate (15) has a relatively small cross section, so that there is the possibility of the boom (17) to move due to its elasticity transverse to its longitudinal axis. The movement of the boom (17) is of course possible in all directions - with respect to its longitudinal axis.

The determination of the front panel (2) on the drawer (1) is done in the following way:

After insertion of the inserts (6) in the Hohlkammem (4) of the side walls (3), first the rotary latch (8) in the fork-like guide members (7) are snapped. The rotary latch (8) are rotated so that their insertion openings (14) to the front of the drawer (I) indicate. This position is fixed by one of the notches (12) and the latching lug (13) of the insert part (6).

On the front plate (2) two holding plates (15) with the arms (17) and the forks (18) formed thereon are attached. The arms (17) with the formed forks (18) can be pushed through insertion openings (20) of the walls (5) closing the hollow chambers (4), and the forks (18) can be pushed onto the transverse bolts (9) of the rotary bolts (8 ) be aufgenappt. By this simple manipulation, the front panel (2) is initially prefixed without further operations on the drawer (1), that is, the front panel (2) can no longer be solved automatically. By rotation of the rotary latch (8), which are provided for this purpose in the region of their bearing pin (10) with a transverse slot (21) into which a screwdriver can be inserted, now the tightening curves (11) of the rotary latch (8) in one position

-3Nr. 390 Are pivoted 872, in which they engage behind the forks (18) at the free ends of the boom (17). Due to the eccentric arrangement of the tightening curves (11) relative to the longitudinal axis of the transverse bolt (9) and bearing pin (10) creates a tightening torque, through which the holding plates (15) and thus the front panel (2) to the front of the drawer (1). is attracted. In the final tightening position, the front panel (2) is immovably fixed to the front of the drawer (1).

Since the arms (17) of the holding plates (15) are movable transversely to their longitudinal axis, they can be aligned prior to the final fixing of the front plate (2), in all directions parallel to the face of the drawer (1).

As can be clearly seen in particular from FIGS. 5 and 6, a cross-beat-like structure (22) is attached to each retaining plate (15) as well as to the front sides of the end-face drawer walls (5). By this structuring (22) is achieved after the final tightening of the rotary latch (8) between the mutually facing surfaces of the holding plates (15) and the walls (5) to some extent a positive engagement, which additionally secures the adjusted position of the front panel (2).

As shown in FIG. 6 and FIG. 7 As can be seen, each wall (5) is provided with two resilient tabs (23), the surface of which projects slightly beyond the remaining surface of the walls (5). This ensures that even with slight tightening the rotary latch (8) is given a certain fixation of the front panel (2) within the adjustment, but nevertheless a deliberate shift of the front panel (2) in the sense of alignment is possible because the resilient tabs ( 23) wegfedem at a conscious displacement of the front panel (2) within the alignment plane to the rear.

In the illustrated embodiment, the rotary latch (8) are each equipped only with a tightening curve (11) and thus engage behind the forks (18) only on one side. As a result, a particularly space-saving design is achieved, but nevertheless ensures a secure fixation, especially when the boom (17) in the region in which the tightening curve (11) of the rotary latch (8) engages behind the fork (18), with a recess (24) are provided. Thus, the tightening curve (11) of each rotary latch (8) can be brought very close to the longitudinal axis of the boom (17), so that the power transfer between the rotary latch (8) and fork (18) almost in the region of the longitudinal axis of the boom (17). he follows.

It is of course also possible, the rotary latch (8) in such a way that they are equipped with two tightening curves (11), which then engage behind the fork (18) of an Aulegers (17) from two sides. However, as already mentioned, this would increase the overall construction.

In the insert part (6), which with a in an opening (25) of the wall (5) engaging catch hook (26) and a support rib (27) is provided, which is supported on the upper transverse web (28) of the hollow chamber-like side wall (3) , It may be a component which is only intended to receive a rotary latch (8). But it is also readily possible to make the insert (6) so that it extends over the entire length of the drawer and is formed in its lower end portion as a guide rail for the drawer (1).

The insert (6) is advantageously as well as the drawer (1) and the holding plate (15) made with the molded parts made of plastic.