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1. WO2021005476 - LEVELLING DEVICE FOR FURNITURE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

LEVELLING DEVICE FOR FURNITURE

The present invention relates to a levelling device for a piece of furniture, or for parts of a piece of furniture.

Furniture or pieces of furniture refer to at least one horizontal or base element and at least one vertical or shoulder element firmly joined together, perpendicular to each other, whose position must be adjusted with respect to a supporting surface or floor, even when the space between the base of the furniture and the floor is small.

The levelling device according to the invention is of the type adjustable from above and from inside the furniture and is applied to furniture in which the lower or underlying surface of the base is substantially coplanar with the lower edge of the shoulder.

The general objective of the present invention is to provide a levelling device having a structure which is such as to guarantee both the support of the vertical or shoulder element and an ample height adjustment, with a height equal to, or even greater than the distance between the base and the floor.

A further objective of the invention is to provide a levelling device provided with an adjustable foot, which is stably and safely guided between the two extreme positions, i.e. fully withdrawn and completely extracted.

The above-mentioned objectives are achieved by a levelling device having the characteristics specified in claim 1 and in the subordinate claims.

The structural and functional characteristics of the invention and its advantages with respect to the known art can be clearly understood from the following description, referring to the attached drawings, which illustrate three possible embodiment examples of the invention itself. In the drawings: figures 1 and 2 are two vertical sections illustrating a first embodiment of a levelling device applicable to a piece of furniture, or to parts of a piece of furniture in two different operating positions;

figures 3 and 4 are two perspective views from above and below respectively, illustrating the levelling device alone of figures 1 and 2;

figures 5 and 6 are two plan views from above and below respectively, illustrating the levelling device of figures 3 and 4 ;

figure 7 is a raised longitudinal view according to the arrow F of figure 6;

figure 8 is a raised cross-sectional view according to the arrow FI of figure 6;

figures 9 and 10 are two vertical sections illustrating a second embodiment of a levelling device applicable to a piece of furniture, or to parts of a piece of furniture in two different operating positions;

figures 11 and 12 are two perspective views from above and below respectively, illustrating the levelling device alone of figures 9 and 10;

figures 13 and 14 are two plan views from above and below respectively, illustrating the levelling device of figures 11 and 12 ;

figure 15 is a raised longitudinal view according to the arrow F of figure 14;

figure 16 is a raised cross-sectional view according to the arrow FI of figure 14;

figures 17 and 18 are two vertical sections illustrating a third embodiment of a levelling device applicable to a piece of furniture or parts of a piece of furniture in two different operating positions.

Figures 1 and 2 illustrate a first exemplary and non limiting embodiment of the invention in which a levelling device 10 is applied to a piece of furniture M which must be levelled with respect to a supporting surface or floor P.

In the drawings only the essential parts of the furniture M are shown, i.e. a horizontal or base element 11 and a vertical or shoulder element 12, perpendicular to each other.

As can be clearly seen from the drawings, the lower or underlying surface S of the base 11 and the lower edge B of the shoulder 12 are substantially coplanar with each other, i.e. they lie on the same plane which is parallel and interspaced with respect to the floor P.

The base 11 and the shoulder 12 are firmly joined together by means of joining systems of known type (not shown), with the edge B1 of the base 11 abutted against the inner surface SI of the shoulder 12.

With reference to figures 4-8 of the drawings, the levelling device 10 is structurally composed of a rigid plate 13, for example made of plastic, metal, or other material suitable for the purpose, having a substantially rectangular elongated plan configuration.

Respective reinforcing ribs (skirts) 14 are formed integrally and extend downwards at 90° from the longitudinal edges of the plate 13.

According to the invention, a sleeve or seat 15 extends downwards, integrally from the plate 13, from its underlying surface, in which a threaded adjustable foot 16 is housed, of a type known per se, said foot 16 being movable backwards and forwards within said seat 15.

Said seat 15 has a first truncated-conical section 17, extending from the plate 13 which ends with a second cylindrical section 18, internally threaded, on which the above-mentioned foot 16 is threaded externally.

The foot 16 can be optionally provided at the outer end with a pad 19 for resting on the floor P, and at the inner end, opposite the pad 19, said foot 16 is provided with a run-end stop 20 of the thread to prevent the downward extraction of the foot 16 itself from its seat 15.

The plate 13 is also provided with fixing means 21 which extend upwards in a position opposite to the seat 15, and which serve for firmly fixing the levelling device 10, under the base 11, as clearly illustrated in the drawings.

Said fixing means 21 can, for example, be those known in the field as "doubels", which are radially yielding and which are forcibly pressed into complementary holes 22 and are expanded radially by means of an expansion screw 23, so as to cling permanently to the base 11.

As can be clearly seen from the drawings, in the example illustrated, there are two of said fixing means 21 which are arranged laterally, at a certain distance from the seat 15 of the adjustable foot 16.

In particular, figures 5 and 6 of the drawings clearly show how the seat 15 of the adjustable foot 16 and the fixing means 21 are aligned along the same longitudinal symmetry axis X-X of the plate 13.

The fixing means 21 are interspaced by an equal distance d from the symmetry axis Y-Y of the seat 15, said axis Y-Y however being offset (eccentric) with respect to the transverse symmetry axis Z-Z of the plate 13.

In this way, a section or flap 24 is defined on the plate 13 which protrudes from the base 11, the lower edge B of the shoulder 12 resting, at least partially, on said section 24 (figures 1 and 2) when the levelling device 10 is fixed under the base 12, in an operating position.

The levelling device 10 can be operated from above using a key 25 which, passing through a pass-through hole 26 of the base 12 engages with the upper free end of the foot 16 with a corresponding imprint.

In this way, the foot 16 can be screwed into its threaded seat 15 between the fully withdrawn (figure 1) and completely extracted (figure 2) extreme positions; the distance h between the base 11 and the floor P can therefore be varied/adj usted, according to the stability requirements of the furniture M.

The pass-through hole 26 is coaxial with the foot 16 and with the seat 15 and has a diameter slightly greater than the cross-section of the key 25.

In other words, the axes of the seat 15, of the adjustable foot 16 and of the pass-through hole 26, coincide.

The number 27 indicates an aesthetic hole-covering cap.

In the embodiment of the invention illustrated in figures 1-8 the internal end of the adjustable foot 16, and its completely withdrawn position, is substantially adjacent to the lower surface S of the base 11, i.e. it can in no way penetrate within said base 11.

The extension of the adjustment is consequently substantially equal to the height h.

Figures 9-16 illustrate a second exemplary embodiment of a levelling device incorporating the innovative principles of the present invention.

In this second embodiment of the invention illustrated in figures 9-16, components. The same as or substantially equivalent to those illustrated in figures 1-8, are indicated with the same reference numbers increased by 100.

The only significant difference between the two embodiments is that the second embodiment offers a greater height adjustment than the first embodiment, thanks to the fact that the adjustable foot 116 can penetrate a pass-through hole 126 of the base 111. For this purpose, said hole 126 has a slightly larger diameter than that of the adjustable foot 116, as can be clearly seen from figures 9 and 10 of the drawings.

Another difference is that the levelling device 110 of this embodiment of the invention is fixed to the base 111 only by means of screws 128, there being no "doubels".

Figures 17 and 18 illustrate a third exemplary embodiment of a levelling device incorporating the innovative principles of the present invention.

In this third embodiment of the invention illustrated in figures 17 and 18, components the same as or substantially equivalent to those illustrated in figures 1-16 are indicated with the same reference numbers increased by 200.

This third embodiment of the invention differs from the first two embodiments in that the seat 215 of the adjustable foot 216 consists of the truncated-conical section 217 alone, the cylindrical end section being absent.

Consequently, in order to allow the adjustable foot 216 to be moved downwards and viceversa (forwards and backwards) between the two positions shown in figures 17,18, the end edge of said truncated-conical section 217 is threaded, and the adjustable foot itself 216 is screwed onto said edge.

The objectives mentioned in the preamble of the description have thus been achieved.

The protection scope of the present invention is defined by the enclosed claims.