FR2675672A1 - DRAWER IN SHEET. - Google Patents

Abstract

Sheet metal drawer with plastic front element (24). The sheet metal element (12) which forms the bottom (14) and the side walls (16) of the drawer is open at least on the front face and the front wall of the drawer is directly by the front element (24) made of plastic material, the rear face or the edges of which are provided with grooves in which the front edges of the sheet metal element (12) and / or flanges (20, 22) start from said sheet element.

Description

Sheet drawer

  The invention relates to a sheet metal drawer with an element

  facade of plastic material.

  Drawers generally consist of a wooden box, plastic material or closed metal sheet on the front and rear sides and a wooden or plastic facade element.

  placed in front of the front wall of the body and

  to obtain an optical adaptation to the neighboring elements of the furniture facade In the sector of kitchen and office furniture, more and more, in recent times, have been adopted drawers whose case itself is made of sheet metal. some of the well-known drawers of this kind,

  the plastic facade element is screwed onto the

  front king in sheet metal of the crate In some other fashion of

  realization, the façade element engages with a superior edge

  in the manner of a hook behind the upper edge of the drawer front sheet metal wall, and the lower edge of the facade element is blocked by screws on a flange of

the sheet metal wall.

  The object of the invention is to create a sheet metal drawer with a plastic facade which is easy to produce and makes it possible to obtain a clean and aesthetic transition.

  satisfactory between the sheet metal element and the facade element.

  According to the invention, this object is achieved by the fact that the sheet metal element which forms the bottom and the side walls of the drawer is open at least on the front face and that the front wall of the drawer is directly constituted by the element. plastic facings whose back face or edges are provided with grooves in which the edges engage

  front of the sheet metal element and / or flanges starting from said element

sheet metal.

  For the drawer according to the invention, the front periphery of the box itself is directly constituted by

  the plastic facade element, so that the

  king before the sheet metal case can be removed He in re-

  a considerable simplification of the manufacture of the

  deletion of the link between the boundary walls

  sheet metal and side panels Stable attachment of the façade element to the drawer element and a transition

  optically satisfactory results are obtained by the fact that

  sheet metal engages with its front edges or with bent flanges in corresponding grooves which are shaped

  in the edges or in the rear face of the facade element.

  In this way, the step and the slot are removed.

  paration between the sheet metal front wall and the rear face of

  facade elements that are inevitable for drawers

  In addition, the free ends of the sheets are held stably in the grooves of the

  facade, which gives the entire drawer a great deal of

  without the need for an assembly

  angularity complicated by riveting, welding, brazing or

  logue. It is advantageous to also make the wall

  rear of the drawer in the form of a plastic element

  which is connected to the sheet metal element of the same ma-

  the façade element In this case, the background and the

  side kernels of the drawer are simply constituted by a

  U-folded sheet, which allows for a special manufacturing

simple and rational.

  In a special embodiment, the bottom edges and side walls that engage the grooves

  are bent in the manner of flanges upwards and respective-

  inwards, and the façade element and respective-

  the rear wall are interlocked at the top with the said flanges. With regard to the rear wall, which must not be

  protruding laterally from the side walls of the drawer, the

  In contrast, for the façade element it is advantageous to provide vertical grooves in the rear face. These grooves have an L-shaped cross section in accordance with the bent flanges. and

  they extend to the lower edge of the element of

  In order to solve the demolding problems encountered during the production of the grooves, it is advantageous if the front element is constituted by a hollow body with a back and a cover mounted on it, that the grooves are

  shaped in the back wall of the back and limited in

  melter by bars arranged in the empty space of the hollow body, injection-molded in one piece with the rear wall and oriented orthogonally to the plane of the wall

  In addition, it is appropriate that the flanges bent by

  both lateral walls of the sheet metal element are housed in recesses of the horizontal bars of the back element, and that the rear wall of the back is provided, respectively with the

  the level of the bars, of the demolding slots for the

  rods that extend orthogonally from

vertical grooves.

  In another embodiment, the side walls

  and the bottom are not bent, so that the element of

  frontage can be nested by the front on the edges of the

  This results in a further simplification of manufacture. Fixing of the facade element to the sheet metal element is made possible by the fact that small openings are punched in the sheet metal and on the back side of the plate. elements of the facade are mounted mobile locks which engage in said openings In the case where the lock is also made of plastic, the

  sharp edges of the sheet may, however, lead to a

  some wear which has the effect of loosening over time

  the connection between the sheet metal element and the facade element.

  That is why it is advantageous not to delete completely

  cut sheet for the realization of the openings but to bend it only out of the opening so as to form

  a tab that is flat against the lock.

  The description that follows, next to the drawings

  annexed by way of non-limiting examples, will

  understand how the invention can be put into practice.

  Figure 1 shows, in perspective, an exploded view of a drawer;

  FIG. 2 represents a horizontal section through

  of the façade element and the front edge of a wall la-

  side of the drawer; Figure 3 shows a rear view of a front element for a drawer according to an exemplary embodiment of the invention; Figure 4 shows a sectional view along the line IV-IV in Figure 3; Figure 5 shows a sectional view along the line V-V in Figure 3; Figure 6 shows a horizontal sectional view of the facade element according to Figure 3; Figure 7 shows a front view of a back of a facade element according to another embodiment of the invention; Figure 8 shows a vertical sectional view of the facade element according to Figure 7; Figure 9 shows a horizontal sectional view of the facade element in the region of a lock; FIG. 10 represents a front view of a lock, and FIG. 11 represents, on a larger scale, a

detail of fig 9.

  In accordance with FIG. 1, a drawer 10 comprises a folded sheet metal element 12 which forms the bottom 14 and the side walls 16 of the drawer and is open to the front face and to the

  back side From the upper edges of the side walls

  16, two flanges 18 are folded horizontally towards

  In addition, on the front edge of the bottom 14 is in conformity

  An angled flange 20 is provided, and orthogonally angled flanges 22 are provided on the upper edges of the side walls 16. Analogous flanges are also shaped in a manner not shown at the rear end of the sheet metal member. 12 A plastic facade element 24 is provided at the lower edge and in the rear face with grooves masked in FIG. 1, and engaged from above in the opening formed by the flanges 20 and 22, said

  flanges engaging in the associated grooves.

  A rear wall 26 of plastic material is engaged

  similarly in the flanges at the rear end

of the sheet metal element 12.

  According to FIG. 2, the facade element 24 is constituted

  killed by a back 28 of plastic, injection molded into

  one piece, and by a cover 30 made separately and often

  dice posteriorly with the back The back 28 presents a face

  rear 32 as well as vertical bars 34 and bars

  horizontal retentions 36 which pass through the honeycomb space empty space between the rear wall 32 and the cover The rear wall 32 has on each side a vertical groove 38 in which engages the front edge of the associated side wall 16 The grooves horizontal 36 are respectively

  provided in areas around groove 38,

  40 which receive the flange 22 of the sheet metal element 12 and delimit the groove 38 in depth The rear wall 32 has respectively at the level of the horizontal bars 36, release slits 42 which leave orthogonally

  groove 38 and through which the mold cores require

  for the realization of the recesses 40 can be re-

  In addition, in accordance with FIG. 2, a vertical bead 44 which extends parallel to the edge of the groove 38 is shaped on the inner surface of the rear wall 32 so that the

  flange 22 is held by adhesion between the edge of the recess

  40 and said bead 44 Thus, a precise adjustment of the facade element on the sheet metal element is ensured despite the inevitable radius of curvature in the transition zone between

  the flange 22 and the side wall 16.

  3 to 6 show a practical embodiment of the front element 24 illustrated only in the form of schematic sketches in FIGS. 1 and 2.

  3 and 4, the lower edge of the rear wall 32 is dis-

  placed at a distance from the lower rear edge of the cache 30 of such

  way that the flange 20 of the sheet metal element can engage

  the lower edge of the rear wall 32 This is only

  in the area of threaded connections 46 that a

  pocket or pocket 48 also delimited upwards and forwards in which the flange 20 engages in an adjusted manner

  (fig 5) For reasons of tools, the width of the rationale

  Nure 48 is larger than the very small thickness of the plate of the flange 20. To obtain a precise adjustment of the flange in the groove, the groove is narrowed punctually

by a vertical rib 50.

  When the facade element 24 is fitted on the

  flanges 20, 22 of the sheet metal member 12, screws not shown

  Tees are screwed from below into the threaded connections 46 so that their heads are lodged with their edge under the bottom 14 of the sheet metal element, above the groove 48. This prevents unintended extraction of the element. facade

  24 towards the top of the sheet metal element.

  Figures 7 to 10 represent another example of

  In this example of embodiment, the front edges of the side walls 16 and the bottom 14 of the element

  sheet metal are not bent, so that there is no

  mation of flanges similar to the flanges 20, 22 of FIG.

  back 28 is provided with vertical grooves 38 for the walls la-

  16 and a horizontal groove 52 for the bottom 14 of the sheet metal element 12 The grooves 38, 52 are delimited each time by slots in the rear wall 32 and by webs 54, 56 profiled in pockets D '. a similar way to the groove 48 in FIG. 5, the grooves in the bars

  54, 56 are also narrowed by ribs 58 iso-

Lées.

  According to FIG. 9, the side walls 16 present

  openings 60 of which a tab 62 is folded to

  right angle outwards On the inner side of the pa-

  rear king 32 is movably guided in the horizontal direction

  zontal latch 64 which has substantially the shape of a

  rectangular plate and whose free end passes through the

  60 of the side wall 16 The latch 64 is chamfered

  born on both sides of its edge 66 which engages in the

  60 and fits tightly in the free space

  between the rear wall 32 and the lug 62, so that the element

  facade is locked without play on the sheet metal element

  As the tab 62 forms a surface of

  relatively large for lock 64, wear on the

  Plastic latch is avoided even in the case of

frequent mechanical

  The lock 64 has on its rear face directed towards the inside of the slide a protrusion 68 which protrudes into an opening 70 in the rear wall 32 which communicates with the groove 38. The height of the latch 64 and the projection 68 is only slightly As a result, because of the engagement of the projection 68 in the opening 70, the lock is guided in such a way that it can only be moved in the horizontal direction. the protrusion 68 also limits the movement of the latch in the horizontal direction. Finally, the projection 68 is still used as a catch for the actuation of the latch. The vertical bars 34 respectively comprise in the region of the latch 64 a transverse bar 72 oriented inwards by relative to the rear wall 32 and connecting the bar 34 to the strip 54 profiled pocket The transverse bar 72 constitutes a guide surface on which bear the plate lug 62 and the lock 64 Free space between the left edge

  of the opening 70 in FIG. 9 and the left edge of the bar

  transverse rette 72 is smaller than the thickness of the

  protrusion 68 so that even in the unlocking position

  the lock can not fall into the free space between the

  back and the cover of the facade element However, in the

  unlocking position, the latch 64 can be rotated

  such that its free end 66 emerges from the opening

  However, a complete extraction of the latch of the opening 70 is prevented normally by stop members 74 which, in accordance with FIG. 10, engage behind the edge of the opening 79. 'ar-

  However, the end 74 and the latch 64 allow elastic compression.

  In this way, it is possible to

  During assembly, the lock 64 can be inserted into the facade element through the opening 70. Then, the lock is held captively in the position desired by

  the stop members 74 and the projection 68.

  As can be seen from the partial view on a larger scale of FIG. 11, the latch 64 has at its end opposite the locking edge 66 a stop protrusion 78 which

  engages in a stop notch 80 in the integral surface

  the rear wall 32 of the back member Since the latch lock latch 64 is held without

  clearance between the lug 62 and the rear wall 32, the protrusion of

  end 78 is locked in notch 80 Unlocking

  unintentional is thus prevented. However, if the lock is

  The lock must be unlocked by the fact that the user moves lock 64 by means of plug 68 to the left in FIG. 11, the thinner left end section of lock 64.

  can be deformed elastically so that the protrusion

Rét 78 leaves the notch 80.

Claims (11)

  1 Sheet metal drawer with a plastic facade element (24), characterized by the fact that the sheet metal element (12) forming the bottom (14) and the side walls (16) of the drawer is open at least on the front face and that the front wall of the drawer is directly constituted by   the facade element (24) of plastics material whose face   or edges are provided with grooves (38, 48, 52) in which S 'engage the front edges of the sheet metal member   (12) and / or flanges (20, 22) extending from said sheet metal member.   Sheet metal drawer according to claim 1, characterized   in that the sheet is also open to the front face.   and a rear wall (26) of plastics material   door, too, grooves to receive the edges   or flanges of the sheet metal member (12).   Drawer according to one of claims 1 or 2,   characterized in that the front edge of the sheet metal member is provided with flanges (20, 22) folded inwardly from the side surfaces and the bottom, and that the facade element (24)   can be fitted at the top on said flanges.   4 Drawer according to claim 3, characterized in that the upward extraction of the facade element (24) is prevented by screws or stoppers arranged at the   underside of said facade element and acting on the sheet metal.   Drawer according to one of claims 1 or 2,   characterized in that the grooves (38, 52) of the facade element extend in the rear face thereof, and that the facade element can be nested by the front on the front edges of the side walls. (16) and the bottom (14) of the sheet metal member and locked on said sheet metal member by stop members or latches (64) which engage with   openings (60) in the sheet metal member.   Drawer according to one of the preceding claims   characterized in that the facade element is a body   hollow formed by a back (28) and a cover <30) mounted on this   that the grooves (38, 52) are shaped in the -   rear king (32) of the back and limited in depth by bar-   retainers (36, 54, 56) disposed in the void space of the hollow body, injection molded in one piece with the wall   rearward and oriented orthogonally to the plane of the wall Rière.   Drawer according to one of claims 3 and 6,   characterized in that the bent flanges (22) from the   lateral sides of the sheet metal element are housed in   (40) of the horizontal bars (36) of the back element, and that the rear wall <32> of the back element is provided, respectively at the bars, mold release slots (42) for the recesses (40) bars that extend orthogonally from the vertical grooves (38).   Drawer according to one of claims 5 and 6,   characterized in that the latches (64) are respectively guided in the free spaces between the inner surface of the rear wall (32) and the webs (54) so as to be movable parallel to the plane of the rear wall, and that they are accessible through openings (70) in the rear wall, arranged opposite the guide surfaces (72) bars.   9 drawer according to claim 8, characterized in that the locks (64) can be introduced into the element   facade through the openings (70) respectively associated   in the back wall of the back element, and that after   the introduction, they are blocked in the opening by or- elastic stop gates (74).   Drawer according to one of claims 8 or 9,   characterized in that the latches respectively have a protrusion (68) protruding into the opening (70) of the wall   backward and allows only limited movement in the direction   perpendicular to the plane of the sheet.   Drawer according to Claim 5 or according to one of   Claims 8 to 10, characterized in that the element of   sheet (12) has legs (62) folded out of the openings   latches (60) for the latches, which respectively form a   bearing surface for said locks.   Drawer according to one of Claims 8 to 11,   characterized in that the latch (64) has at its end opposite the sheet a stop protrusion (78) which engages in   a stop notch (80> in the inner surface of the pa-   back king (32) of the back element.   Drawer according to one of the preceding claims   characterized in that the opening of the grooves (38, 48, 52) is greater than the thickness of the sheet, and that the grooves are each time narrowed by   ribs (50, 58) oriented parallel to the direction of ex- traction.