US20060170316A1

US20060170316A1 - Drawer

Info

Publication number: US20060170316A1
Application number: US11/291,275
Authority: US
Inventors: Reinhard Vogel
Original assignee: Metalurgica Albras Ltda
Current assignee: Metalurgica Albras Ltda
Priority date: 2005-02-01
Filing date: 2005-12-01
Publication date: 2006-08-03
Also published as: BRPI0500367A; EP1685777A1

Abstract

The present invention refers to a drawer whose lateral walls (13, 15) and subsequent (14) are formed starting from an only laminated piece (10) that comprises at least two weak areas (11, 12) that define sovereign of bending for the formation of the said lateral walls (13, 15) and subsequent (14). In accordance with to present invention, the need is eliminated of setting up the subsequent wall to the lateral walls, in that way being saved time of assembly and eliminating the employment of fixation means, such as screws, nuts, pins, pegs etc.

Description

FIELD OF THE INVENTION

The present invention refers, in a general manner, of a drawer to be inserted in rails for drawers-case. More specifically, the present invention refers to a drawer for fitting in drawers-case rails, whose lateral walls and the subsequent wall is formed from an only piece, in that way facilitating your assembly.

BACKGROUND OF THE INVENTION

Are known in the state of art, drawers that possess metallic lateral walls that, usually, it's conformed to be inserted directly in drawers-case rails. Those drawers differs of the other common drawers because it is not directly necessary the employment of rails in drawers, but only in the drawers-case.
This type of drawer of the state of art possesses it's lateral walls separated one of the other, generally conformed in metallic material, such as the carbon steel carbon, for be inserted directly in the rails of the drawers-case. In that way, the other walls of the drawer, such as the subsequent wall, the previous wall and the bottom are separate from the lateral walls and, usually, it's manufactured of another material, like as wood, compensated woods etc.
Those drawers represent a profit in relation to the common drawers, because being the lateral walls conformed to be inserted directly to the mounted rails in the drawers-case, a pair of rails is eliminated that would be mounted in the lateral walls of the drawer. This represents a significant profit of time for the assembly of the drawers, as well as also an economical profit, because it is not necessary the use of an equal one the more of rails.
However, it is necessary to set up and to fasten the walls of the drawer that are separate some of the other ones. That assembly operation and fixation of the lateral walls to the walls frontal, subsequent and to the bottom it is quite onerous, because it is necessary the employment of devices to centralize the lateral walls of the drawer in relation to the other walls that will fixed to the said lateral walls. Moreover, it is also indispensable the employment of fixation means, such as screws, pins, pegs, nuts, glues etc and the fixation of those means in the walls of the drawer.
Therefore, it's desirous to reduce this time of operation of assembly of the drawer when it's used lateral walls that are inserted directly in rails for drawers-case.
This way, constitutes a first objective of the present invention to provide a drawer who's the lateral walls and the subsequent wall are formed jointly from an only piece, being eliminated the assembly need of at least a wall of a drawer.
Constitutes another objective of the present invention to provide a drawer whose bottom is set up through fitting, being eliminated the need of the employment of fixation means and centralization, facilitating and decreasing, consequently, the time of assembly of a drawer.

SUMMARIZED DESCRIPTION OF THE INVENTION

The objectives above mentioned, among others, are reached with to present invention, that constitutes a drawer whose lateral and subsequent walls are formed starting from an only laminated piece, particularly a laminated piece starting from a metallic foil, that understands at least two areas weakened that define enlarging areas for the formation of the said lateral walls and subsequent of the said drawer.
The weak areas for enlarging are spaced to each other and it's defines the width of the subsequent wall of the drawer, only that the ductibility of those weak areas be larger than the medium ductibility of the walls of the drawer. In other words, the tension of drainage of the said weak areas should be smaller than the medium drainage tension of the walls of the drawer, so that they can bend easily in that more area that in other areas of the walls of the drawer. However, the shear tension should be such that there is not the shear of the weak areas when bent. The weak areas should support the enlarging operation without shearing. Some materials can be used for the production of the drawer of the present invention with appropriate thickness for not happening the shear of the weak areas as, for instance, the carbon steel ASTM 1020 with thickness of 1 mm. Other metallic alloys can be used, as well as also polymeric materials, since the areas weak non-shear when bent.
Those weak areas can be formed by any mean known of the man of the art. For instance, it can diminish the amount of material that composes the plan of the wall conforming a series of openings spaced to each other, as wrinkled area. Optionaly, the weak areas can be formed by the decrease of the thickness of the by electro-erosion. The weak areas can still be formed, optionaly, for corrosive chemical attack or electro-erosion, or any other appropriate method.
The drawer of the present invention can comprise, still, a canaleta in form of “U” in the portion more inferior of the said lateral walls and subsequent, so that it is in it inserted the bottom of the drawer.
In an accomplishment of the present invention, the walls of the drawer can understand in your superior portion a rail profile for fitting in a rail corresponding of a drawers-case, as well as openings foreseen to receive sheaves, necessary to the sliding of the drawer on the said rail.
In agreement with an accomplishment, the lateral walls and subsequent of the drawer of the present invention they can be grooved, to increase the resistance to the torsion of the said lateral walls and subsequent.
The drawer according to the present invention can understand openings still foreseen for the employment of fixation means of a front wall, as well as openings for the employment of fixation means for the bottom of the drawer, in case necessary.

BRIEF DESCRIPTION OF THE FIGURES

The improvements and effects of the present invention will be apparent to the technicians in the subject from the detailed description presented to proceed, being made reference to the enclosed figures, just given to illustrative title of accomplishments peculiar of the invention. The figures are schematics and your dimensions and proportions cannot correspond to the reality, once they just seek to illustrate to present invention in a didactic way, without imposing any limitations or else those contained in the claims presented further on, wherein:
The FIG. 1 is a view in perspective of the only piece from which the drawer of the present invention is formed;
The FIG. 2 is a view in perspective of the drawer of the present invention with the bent lateral walls; and
The FIG. 3 is a view in perspective of the drawer of the present invention fit in two rails of a drawers-case.

DETAILED DESCRIPTION OF THE INVENTION

With relationship, firstly, to the FIG. 1, the only piece (10) is illustrated from which the drawer of the present invention will be formed. According with this accomplishment, the only piece is, preferably, laminated from a metallic foil of carbon steel in a laminating of step.
In the pass laminating, the profile of the only piece (10) is conformed and are formed for stamping,the weak areas (11, 12) that comprises openings spaced to each other, so that in the said weakened areas the drainage tension will be smaller than the medium drainage tension of the walls (13, 14, 15) of the drawer. Those weak areas (11, 12) they are spaced to each other (X) so that they define the width of the subsequent wall (14) of the drawer.
The profile of the only piece can comprise in its inferior portion a groove (16) in form of “U” for fitting of the bottom of the drawer. Alternatively, the profile of the only piece comprises in your superior portion a rail profile (17) for fitting in a rail corresponding of a drawers-case, as well as openings (18) for fitting the sheaves, necessary for the sliding of the drawer in the rails of the drawers-case. The profile of the walls (13, 14, 15) can be channeled, in way to increase the resistance to the torsion of the drawer.
Now, in relation to the FIG. 2, the drawer (20) is illustrated of the present invention. As it can be observed, the lateral walls (13, 15) are bent one in direction to the other in 90° in relation to the subsequent wall (14). The fold runs in the weak areas (11, 12), forming the lateral walls (13, 15) and the subsequent wall (14).
As the ductibilidade of the weak areas (11, 12) is larger than the medium ductibilidade of the walls of the drawer (13, 14, 15), or be, the tension of drainage of the weak areas (11, 12) is smaller than the medium drainage tension of the walls (13, 14, 15), said weak areas (11, 12) bend more easily than any other area contained in the walls (13, 14, 15) of the drawer (20), when applied a tension in at least one of the lateral walls (13, 15).
The operation of doubling of the walls (13, 15) can be accomplished manually, for a common person, being just enough that takes place a substantial fixation of the subsequent wall (14) so that it is viable the doubling of the weak areas (11, 12).
Still in accordance with the cultured accomplishment in the FIG. 2, the portion more inferior of the walls (13, 14, 15) are conformed with a profile of a groove in “U”, in the which the bottom of the drawer can be fit (not illustrated). In the groove in “U” can be foreseen holes (19) for the greeting of fixation means, such as screws or pins, to fasten the bottom of the drawer (not illustrated) in the lateral walls (13, 15) and subsequent (14).
Still optionaly, and in accordance with the cultured accomplishment in the FIGS. 2 and 3, the portion more superior of the walls (13, 14, 15) still comprises a profile in rail form (17) to fit in a rail corresponding of a sliding one (21), for your time fastened in a drawers-case (not illustrated). According to this accomplishment, the need of the employment of a pair of rails is eliminated in the drawer (20). The profile of the rail (17) can also comprise areas (18) foreseen for the sheaves fitting (22), like as illustrated in the FIG. 3, for the sliding in the rail (21) of the sliding.
The lateral walls (13, 15) can also understand areas (23) foreseen to receive means of fixation of a front wall (not illustrated) for the drawer.
Therefore, as it could be verified by the description detailed above, the drawer of the present invention comes to facilitate the production and assembly of drawers because starting from an only piece it allows that is formed, with a simple bending operation, the lateral walls (18, 19) and subsequent (20) of a drawer, being eliminated, like this, the need of use of centralizing equipments, of fixation means, such as screws, nuts, pegs or glues, and allowing a faster assembly in comparison with the drawers of the state of art.
It should be recognized that, although to present invention it has been described with relationship to your favorite accomplishment, the technicians in the subject can develop a wide variation of structural and operational details, as well as they will above be able to expand the drawer described for other types of destinations without, however, to stray of the beginnings of the present invention. Therefore, the enclosed claims should be interpreted as covering all equivalent ones that are framed inside of the ambit and character of the invention.

Claims

1. A drawer comprising lateral walls and a subsequent wall which are formed from an only piece that is laminated and that comprises at least two weak areas that define bending areas for the formation of said lateral walls and subsequent wall.

2. The drawer, in accordance with claim 1, wherein said weak areas are spaced to each other and define the width of said subsequent wall of the drawer.

3. The drawer, in accordance with claim 1, wherein said weak areas are formed when conforming to openings spaced to each other, forming a wrinkled area.

4. The drawer, in accordance with claim 1, wherein the weak areas are formed by chemical attack with material oxidizer or for electro-erosion.

5. The drawer, in accordance with claim 1, wherein a portion more inferior of said walls comprises a groove in form of “U” in the which the bottom of said drawer is fit.

6. The drawer, in accordance with claim 1, wherein a superior portion of the walls is conformed with a rail profile and openings foreseen to receive a sheave, for fitting in a corresponding rail of a drawers-case.

7. The drawer, in accordance with claim 1, wherein said walls are conformed to a grooved profile.

8. The drawer, in accordance with claim 1, wherein said lateral walls comprise additional openings foreseen to receive means of fixation of a front wall and openings foreseen to receive means of fixation of the bottom of said drawer.

9. The drawer, in accordance with claim 1, wherein the drawer is manufactured from a carbon steel plate.