Chair

The present invention relates to a chair comprising two ribbed supporting sectional elements set at a distance from one another in a transverse direction and connected to a base by means of a transverse supporting element, in which each of said ribbed supporting sectional elements is basically L-shaped with a seat portion, a backrest portion, and a rounded radiusing portion between the seat portion and the backrest portion and in which a substantially sheet-like material forming a seat and a backrest extends between said ribbed supporting sectional elements.

A chair of the type referred to above is known from the document No. DE1260721 filed in the name of Hermann Miller Inc. The chair described in this document was made by the famous designer Charles Eames in 1958 and became a point of reference of industrial design.

The chair designed by Charles Eames envisaged the use of two basically I-section rigid aluminium supporting sectional elements fixed together by means of at least two transverse supporting elements, one of which serves for connection to a column base. A sheet formed by a fabric or a mesh, is wound on the two lateral aluminium sectional elements and is anchored laterally in two external side grooves of the supporting sectional elements.

The purpose of the present invention is to provide a chair that will enable higher characteristics of comfort to be obtained, maintaining the same stylistic setting of the chair designed by Eames in 1958.

According to the present invention, the above purpose is achieved thanks to the fact that each of the ribbed supporting sectional elements is provided with a plurality of through notches, which are set at a distance from one another in a longitudinal direction and form respective points of localized bending of the supporting sectional element in a vertical plane, said notches being set at a distance from one another by respective stretches that are substantially rigid to bending in said vertical plane.

By making the supporting sectional elements of plastic material (typically nylon) and forming the aforesaid notches in a central stiffening ribbing of the sectional elements, there is the possibility of introducing a controlled bending in definite portions of the sectional element. Bending of the sectional element can be assisted by a small steel bar inserted in a groove of the sectional element in an area corresponding to the radiusing area between the seat portion and the backrest portion of each sectional element.

The notches have opposite surfaces that enter into contact with one another in the position of maximum inclination so as to limit the maximum amount of localized bending in each point of the sectional element.

DESCRIPTION OF THE DRAWINGS

The present invention will now be described in detail with reference to the attached drawings, which are provided purely by way of non-limiting example and in which:

FIG. 1 is a perspective view of a first embodiment of a chair according to the present invention;

FIG. 2 is an exploded perspective view of the chair of FIG. 1;

FIG. 2A is a cross section according to the line II-II of FIG. 2;

FIG. 3 is a cross section according to the line III-III of FIG. 1;

FIG. 3A is an enlarged detail of a part of FIG. 3;

FIG. 4 is a detail at a larger scale of the part indicated by the arrow IV in FIG. 2;

FIG. 5 is a view of the detail of FIG. 4 illustrating the notches in the position of maximum bending;

FIG. 6 is a schematic side view illustrating the radiusing portion of a supporting sectional element in the resting position and in the position of maximum inclination backwards;

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Locking collapsible seat apparatus
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Chairs and seats

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