초록 ▼

An adjustable leg for supporting the top of a table. The adjustable leg includes a plurality of telescoping leg members in which the inner surface of one leg member faces and slides with respect to the outer surface of another leg member. Contrast members are provided between the inner surface of th

An adjustable leg for supporting the top of a table. The adjustable leg includes a plurality of telescoping leg members in which the inner surface of one leg member faces and slides with respect to the outer surface of another leg member. Contrast members are provided between the inner surface of the one leg member and the outer surface of another leg member to form a forced coupling between the two leg members, to generate a static friction force therebetween, so that the static friction force opposes an outer longitudinal force applied to the second leg end towards the first leg end, to lock in rest the leg members to one another.

대표청구항 ▼

1. An adjustable leg for supporting a support top of a table, said leg defining an extension axis, a first end of the leg, and a second end of the leg, opposite the first end, comprising: a plurality of leg members mutually slidably engaged along the extension axis;wherein at least one leg member of

1. An adjustable leg for supporting a support top of a table, said leg defining an extension axis, a first end of the leg, and a second end of the leg, opposite the first end, comprising: a plurality of leg members mutually slidably engaged along the extension axis;wherein at least one leg member of said plurality is defined by an outer surface extending about the extension axis and at least another leg member contiguous to the one leg member is defined by an inner surface configured to slidably receive said outer surface of the at least one leg member along the extension axis;wherein said inner surface of said at least another member contiguous faces and is complementary to said outer surface of said at least one member;wherein said inner surface and said outer surface is an extruded surface with an elliptical section, having a major axis and a minor axis;contrast members interposed between the outer surface of said at least one leg member and the complementary inner surface of said at least another contiguous leg member, by elastic contrast between said outer surface and said inner surface, said contrast members comprising a first pair of contrast members and a second pair of contrast members arranged in the vicinity of the ends of the leg members along the major axis of the ellipse, in a symmetrical manner with respect to the minor axis, leaving central portions of the transversal cross-section of the leg members unloaded;wherein the elasticity of said contrast members and the elasticity of said leg members are designed to form a forced frictional coupling between said at least one leg member and said at least another contiguous leg member in a direction parallel to the extension axis of the leg so that said static friction force opposes a force applied to the second leg end towards the first leg end along the extension axis and locks in rest the leg members to one another so to prevent relative movement between the first leg end and second leg end in the direction parallel to the extension axis of the leg. 2. The adjustable leg according to claim 1, wherein the contrast members project transversally to the inner or outer surfaces to which they are secured, along such a length as to form an interference coupling between contiguous leg members. 3. The adjustable leg according to claim 1, wherein a first plurality of said contrast members is mounted in a projecting manner from said outer surface of said at least one leg member, along at least one first distribution plane substantially orthogonal to the extension axis in the proximity of an end of said leg member. 4. The adjustable leg according to claim 3, wherein a second plurality of said contrast members is mounted in a projecting manner from said outer surface of said at least one leg member, along at least one second distribution plane substantially orthogonal to the extension axis and substantially parallel to the first distribution plane, wherein the second distribution plane is spaced from the first distribution plane. 5. The adjustable leg according to claim 1, wherein the first plurality of contrast members is distributed in pairs of mutually opposite members, arranged mutually aligned so as to generate mutually aligned and opposite contrast forces, substantially transversal to the extension axis, and/or wherein the second plurality of contrast members is distributed in pairs of opposite members, arranged mutually aligned so as to generate mutually aligned and opposite contrast forces, transversal to the extension axis. 6. The adjustable leg according to claim 5, wherein said second plurality of contrast members comprises a first pair of contrast members and a second pair of contrast members arranged peripherally with respect to the major axis of the ellipse, particularly, in a symmetrical manner with respect of the elliptical section, particularly, in a symmetrical manner with respect to the minor axis. 7. The adjustable leg according to claim 1, comprising end-stroke members to limit the relative sliding between the leg members at a completely withdrawn leg position and a completely retracted leg position, wherein such end-stroke members are abutting projecting members, and wherein such end-stroke members are formed by further contrast members. 8. The adjustable leg according to claim 1, wherein at least one leg member of said plurality of leg members is an extruded tubular member internally defined by a tubular member inner surface, said tubular member extending along a central axis of tubular member, wherein said at least one leg member comprises a plurality of longitudinal reinforcing ribs extending throughout the entire length of said tubular member, said longitudinal ribs projecting from said tubular member inner wall towards the inside of the tubular member;wherein the ribs of said plurality of ribs are distributed along the tubular member inner surface asymmetrically with respect to a first longitudinal plane passing through the central axis, and symmetrically with respect to a second longitudinal plane passing through the central axis and orthogonal to the first longitudinal plane. 9. A table comprising a support top and at least one adjustable leg for supporting said support top at an adjustable height from the floor, said leg defining an extension axis, a first end of the leg, and a second end of the leg, opposite the first end, said leg comprising: a plurality of leg members mutually slidably engaged along the extension axis;wherein at least one leg member of said plurality is defined by an outer surface extending about the extension axis and at least another leg member contiguous is defined by an inner surface configured to slidably receive said outer surface of the at least one member along the extension axis;wherein said inner surface of said at least another member contiguous faces and is complementary to said outer surface of said at least one member;wherein said inner surface and said outer surface is an extruded surface with an elliptical section, having a major axis and a minor axis; contrast members interposed between the outer surface of said at least one leg member and the complementary inner surface of said at least another contiguous leg member, by elastic contrast between said outer surface and said inner surface, said contrast members comprising a first pair of contrast members and a second pair of contrast members arranged in the vicinity of the ends of the leg members along the major axis of the ellipse, in a symmetrical manner with respect to the minor axis, leaving central portions of the transversal cross-section of the leg members unloaded;wherein the elasticity of said contrast members and the elasticity of said leg members are designed to form a forced frictional coupling between said at least one leg member and said at least another contiguous leg member in a direction parallel to the extension axis of the leg so that said static friction force opposes a force applied to the second leg end towards the first leg end along the extension axis and concurs to lock in rest the leg members to one another so to prevent relative movement between the first leg end and second leg end in the direction parallel to the extension axis of the leg.