ES2310440A1 - Adjustable leg for furniture - Google Patents

Abstract

Adjustable leg for furniture, where the fixed body (4) is moulded in metal and has two large openings (9) opposite one another which include, each one, an approximate contour of one quarter of a turn and which are extended throughout it between a lower end flange (10) and an upper end section (11) wherein there exists, at least, one cavity (12) which is axially aligned with the horizontal bore (3) and which, in its lower part, interferes with the operating route of the castellation (7) of the regulating screw (6) the moving lug (5) is moulded in metal and has an upper capsule (13) wherein the regulating screw (6) is threaded, a lower section which has a cross-shaped cross-section and, in the limit between this upper capsule (13) and lower section (14), there are two diametrically opposite radial protuberances (15) which are located via said openings (9) and which, in their sides, these radial protuberances (15) have a sliding fit with respect to the edges of these openings (9).

Description

Adjustable leg for furniture.

Field of the Invention

This invention concerns a furniture leg which is adjustable by telescopic extension and that operates in conjunction with a piece of furniture that has a hole vertical practiced from its lower edge and a horizontal hole which is made on one side of the amount, which interferes with perpendicular to the upper end of the vertical hole and by the which accesses the star tip of a phillips screwdriver, or phillips tip, whose leg comprises a fixed body that fits into the vertical hole, a sliding mobile heel adjusted by the inside the fixed body, an axially immovable regulating screw which has its cylindrical head with crossed shrouds that form a crenellated that meshes with the phillips tip and rotates it to screw on the mobile heel, and a support sole attached to the lower end of the mobile heel.

Prior art

By their destiny this type of legs have a considerable size limitation to be able to be located in the thinness (from 16 mm thick) of an upright panel chipboard or solid wood furniture, as well as these legs are object of productions in large series and for a very market competed; all this makes it very important to find simple and economical solutions, considering that a saving apparently small unit can translate into an important competitive advantage.

In this field it is known that for the construction of the fixed body and the mobile heel are employed mechanization procedures that are expensive in themselves and that are made on materials that have become very expensive significantly and that have a considerable weight.

Explanation of the invention and advantages

Faced with this state of affairs, the invention that now we are advocating an adjustable leg for uprights of furniture, in which the fixed body is molded in metal and it presents two wide openings opposite each other that cover each an approximate outline of a quarter turn and that extend along it between a lower flange end and an extreme upper section in which there is at least one cavity that is coaxially aligned with said horizontal bore and that in its lower part interferes with the operational path of the regulating screw casing. This molded construction in metal (e.g., zamak) is cheaper than those made by machining, is faster execution, uses a more material cheap and lighter, both because of the type of material and because the molded construction allows for a lighter design as described within the molding operation itself, without have to go to a succession of machining operations that, apart from its intrinsic cost, they end up wasting a significant amount of material that, as stated, is of high price; this lightened proposed design is distinguished by the wide diametrically opposite lateral openings and that translate into a very low consumption of material that is also much cheaper and lighter.

In this same line another peculiarity of the invention is that said movable heel is also molded in metal and It has an upper capsule in which the screw is screwed regulator, a lower section that has a cross section in cross and, on the boundary between this upper capsule and section lower, there are two diametrically opposed radial projections that are located through these openings and that, on their sides, these radial projections have sliding adjustment with respect to the edges of these openings; the upper mobile heel capsule it has a terminal provided with an internal thread that is reciprocal of the one with the regulating screw and, between this threaded terminal and the opposite end where said projections are radial, this upper capsule has two large windows longitudinal that are diametrically opposed to each other and that they extend each one in an approximate outline of a quarter of return. The performance of said radial projections in combination with the edges of the wide openings, it provides the guidance of the Mobile heel for operational displacement. Again the molded construction allows a very light design marked through the large longitudinal windows of the upper capsule and for the minimal and light, but resistant, cross section in Cross of the lower section of this mobile heel.

In another order of things, the invention contemplates the existence of two of these cavities arranged in opposition diametral. So that this adjustable leg can be placed in two positions at 180º indistinctly and, in the case of intermediate amounts of furniture, can be operated by one or the other side of it, which facilitates its accessibility.

Drawings and references

To better understand the nature of the invention, in the attached drawings we represent an embodiment industrial that is merely illustrative and not limitative.

Figure 1 is a perspective view that shows an adjustable leg according to the invention. In this figure is incorporated an enlarged detail of a cross section of the adjustable leg

Figure 2 is an exploded view in perspective that shows, on the one hand, the fixed body (4) and, by other side, from top to bottom, the regulating screw (6), the heel mobile (5) and the sole (8).

Figure 3 shows in elevation the mobile heel (5) In half view half section.

Figure 4 is an enlargement of the section IV-IV indicated in figure 3.

Figure 5 is an enlargement of the section V-V indicated in figure 3.

Figure 6 is an enlargement of the section VI-VI indicated in figure 3.

Figure 7 shows the fixed body in elevation (4), seen in front of one of the wide openings (9) of the same.

Figure 8 is the section VIII-VIII indicated in Figure 7.

Figure 9 is an enlargement of the section IX-IX indicated in Figure 8.

Figure 10 is an enlargement of the section X-X indicated in figure 7.

In these figures the following are indicated references:

one.-

Furniture stile

2.-

Upright vertical hole (1)

3.-

Horizontal hole in stud (1)

4.-

Fixed leg adjustable body

5.-

Adjustable leg heel

6.-

Regulator screw

7.-

Casting on regulator screw head (6)

8.-

Support heel for mobile heel (5)

9.-

Fixed body openings (4)

10.-

Bottom fixed body flange (4)

eleven.-

Upper fixed body section (4)

12.-

Upper section cavities (11)

13.-

Upper mobile heel capsule (5)

14.-

Lower section of mobile heel (5)

fifteen.-

Radial projections of mobile heel (5)

16.-

Screw terminal in upper capsule (13)

17.-

Longitudinal windows in upper capsule (13)

18.-

Phillips screwdriver tip

Exhibition of a preferred embodiment

Regarding the drawings and references above listed, an execution mode is illustrated in the attached drawings preferred object of the invention, referred to a leg for furniture which, as stated and illustrated in figure 1, is of type adjustable by telescopic extension and operating in conjunction with a piece of furniture (1) that has a vertical hole (2) practiced from its lower edge and a horizontal hole (3) that It is made on one side of the amount, which interferes with perpendicular to the upper end of the vertical hole (2) and through which you access the star tip of a screwdriver phillips, or phillips tip (18), whose leg comprises a fixed body (4) that fits in the vertical hole (2), a movable heel (5) that slides tightly inside the fixed body (4), a screw axially immovable regulator (6) having its cylindrical head with crossed shrouds forming a crenellated (7) that meshes with the phillips tip (18) and spin it to screw in the heel mobile (5), and a support sole (8) coupled at the lower end of the mobile heel (5).

Figure 1 clearly illustrates the particular constitution of the invention consisting in that the body fixed (4) is molded in metal and has two wide openings (9) opposite each other covering each an approximate contour of a quarter turn and extending along it between a lower flange end (10) and an extreme section upper (11) in which there is at least one cavity (12) that is aligned coaxially with said horizontal hole (3) and that in its lower part interferes with the operating path of the crenellated (7) of the regulating screw (6); the mobile heel (5) is molded in metal and has an upper capsule (13) in which the screw regulator screw (6), a lower section (14) presenting cross section and, at the boundary between this capsule upper (13) and lower section (14), there are two radial projections (15) diametrically opposed that are located through said openings (9) and that, on its sides, these radial projections (15) they have sliding adjustment with respect to the edges of these openings (9). With this graphically supported description you can check now the advantageous qualities that have been discussed before, in As this solution is simpler, cheaper and lighter (it weighs much less than another of equal size or caliber made of according to the state of the art described above). The execution molded is cheaper, faster to manufacture, is suitable for Economic production in large series, allows very lightened that save a material that is cheaper and weigh a lot less, which also affects lower distribution costs per unit of product. All this follows from the ability to the molding technique for in a single operation perform the openings (9) that, in addition to lightening, exercise the guiding function of the movable heel (5) with respect to the radial projections (15). The Figures 2 and 7 to 10 illustrate in detail the proposed configuration for the fixed body (4). Figure 2 also illustrates the assembly of the adjustable leg assembly according to the invention.

This lightweight molded design is not just for the fixed body (4), since, according to the invention, the upper capsule (13) of the mobile heel (5) has a terminal (16) provided with a internal thread that is reciprocal of the one with the screw regulator (6) and, between this threaded terminal (16) and the end opposite where said radial projections (15) are, this capsule upper (13) has two large longitudinal windows (17) that they are opposite each other diametrically and that extend each in an approximate contour of a quarter turn. This can clearly appreciated through the expanded detail included in the Figure 1, as well as in Figures 2 to 6; where the large longitudinal windows (17) of the upper capsule (13), as well as the radial projections (15) of the heel guide mobile (5) and cross-section of the lower section (14) of the latter, all this to greater abundance of the advantages outlined in the previous paragraph regarding the fixed body (4).

Another feature of the invention is intended for regulation to be carried out on two sides opposite of the leg. To this end, in the upper section (11) of the fixed body (4) there are two of said cavities (12) arranged in diametral opposition.

Claims (3)

1. Adjustable leg for furniture, in particular a leg that is adjustable by telescopic extension and that operates in conjunction with a piece of furniture (1) that has a vertical hole (2) made from its lower edge and a horizontal hole (3) which is made on one side of the stud, which interferes perpendicularly with the upper end of the vertical hole (2) and through which the star tip of a phillips screwdriver, or phillips tip (18), whose leg comprises a fixed body (4) that fits in the vertical hole (2), a sliding heel (5) that slides tightly inside the fixed body (4), an axially immovable regulating screw (6) that has its cylindrical head with crossed shrouds that form a crenellated (7) that meshes with the phillips tip (18) and rotates it to screw in the movable heel (5), and a support sole (8) coupled to the lower end of the movable heel (5), characterized in that the fixed body (4) is molded in metal and has two wide openings (9) opposite each other, each covering an approximate contour of a quarter turn and extending along it between a lower flange end (10) and an upper upper section (11) in which there is at least one cavity (12) that is coaxially aligned with said horizontal hole (3) and that in its lower part interferes with the operating path of the casing (7) of the regulating screw (6); said movable heel (5) is molded in metal and has an upper capsule (13) in which the regulating screw (6), a lower section (14) having a cross-section in cross and, on the boundary between this upper capsule (13) and lower section (14), there are two diametrically opposed radial projections (15) that are located through said openings (9) and that, on their sides, these radial projections (15) have sliding adjustment with respect to the edges of these openings (9). 2. Adjustable furniture leg, according to the first claim, characterized in that the upper capsule (13) of the movable heel (5) has a terminal (16) provided with an internal thread that is reciprocal of the one with the regulating screw (6) ) and, between this threaded terminal (16) and the opposite end where said radial projections (15) are located, this upper capsule (13) has two large longitudinal windows (17) that are diametrically opposed to each other and each extending in an approximate outline of a quarter turn. 3. Adjustable leg for furniture, according to the first claim, characterized in that there are two of said cavities (12) arranged in diametral opposition.