BACKREST OR HEADBOARD STRUCTURE, PARTICULARLY DESIGNED FOR ARMCHAIRS, SOFAS, BEDS OR SIMILAR

Abstract

The present invention relates to a backrest or headboard structure, particularly designed for armchairs, sofas, beds or the like, which comprises a lower frame and an upper frame, which is articulated to the lower frame around a substantially horizontal first axis of rotation , which is parallel to the frontal plane of the backrest or headboard. A pair of side wings is provided, each of which is articulated to the upper frame around an axis of rotation, substantially perpendicular to the first axis of rotation, in correspondence with the sides of the upper frame Means are also provided for retaining the upper frame in a predetermined angular position relative to the lower frame around the first axis of rotation and the lateral wings, with respect to the upper frame, around the axis of rotation.

Description

STUDY TECHNICAL. LEGAL PATENTS Qualities. Prof. FRANCO CICOGNA Description of the Utility Model the: "BACKREST STRUCTURE 0 HEADBOARD DESIGNED FOR ARMCHAIRS, SOFAS, BEDS from the BODEMA SNC having as title PARTICULARLY 0 SIMILAR” by Bonacina Giorgio and De Mango Giulio, of Italian nationality, with headquarters in Meda - (Milan) - and elected domicile at the Patent Office of Dr. Prof. Franco Cicogna, in Via Visconti di Mo- drone, 14 / A - Milan. Deposited 112 4 GEH. 1994 DESCRIPTION to the N. NE Ml 94U / 00047 The present invention relates to a backrest or headboard structure, particularly stu day for armchairs, sofas, beds or similar. As is well known, one of the main problems inherent in the design of armchairs, sofas, beds or similar is to obtain the greatest possible comfort. Generally, the comfort of these products is obtained by appropriately studying the angle of the backrest or headboard, in relation to the • K- seat surface or bed surface, so that.. the user's back can be kept in one, po- STUDY TECHNICAL-LEGAL PATENTS Doli, Prof. suitable position to avoid fatigue or in any case such as to avoid incorrect positions that not with they would feel they were getting the effect of refined relaxation by the user. This problem, however, is not easy to solve, as the optimal inclination of the backrest, relative to the seat, varies from person to person, and therefore the same bed or sofa can have different degrees of comfort, depending on the users. The aim of this invention is to solve the above-mentioned problem by creating a backrest or headboard structure, particularly for armchairs, sofas, beds or the like, capable of providing an adequate response to the user's various comfort needs. Within the scope of the above-described task, a particular object of the present invention is to provide a backrest or headboard structure that can be modified according to the user's needs. Another aim of the present invention is to create a backrest or headboard structure, the shape of which can be varied, so to allow for different support positions, for the PATENTS Prof. STORK Gifts. FRANCO STUDY TECHNICAL CO.LEGAL user's back. A further aim of the present invention is to create a backrest or headboard structure, capable of also providing variable-position lateral support for the user's headboard. Another aim of this invention is to create a backrest or headboard, with a simple structure to make, which can offer maximum guarantees of safety and reliability during use. The task described above, as well as the purposes mentioned and others, which will be better highlighted later, are achieved by a backrest or headboard structure, particularly designed for armchairs, sofas, beds or similar, characterised by the fact that it comprises a lower frame and an upper frame, articulated to the lower frame around a first axis of rotation substantially horizontal, parallel to the frontal plane of the backrest or headboard, a pair of lateral wings being provided, each articulated to the upper frame around a second axis of rotation substantially perpendicular to the first axis of rotation, in correspondence with the sides of the upper frame in an anterior position. pre-set angle, with respect to the lower frame at- • T *'7>s. / » / 5.T UDI ° A- / TECN1C0-L6GALe\^\ hl PATENTS j'j Dear Prof. / ^ / VyRANpO stork / ** / I return to the first axis of rotation and the side wings, with respect to the upper frame, around a second axis of rotation. Further features and advantages of the invention may be better understood through an examination of the detailed description of a backrest or headboard structure, according to the present invention, illustrated for indicative but not limitative purposes, with the aid of the attached drawings in which: Figure 1 illustrates the backrest or headboard structure, according to the present invention, in perspective view; figure 2 illustrates the backrest or headboard structure, in front elevation; Figure 3 illustrates the backrest or headboard structure, in lateral elevation. With particular reference to the numerical symbols of the above figures, the backrest or headboard structure, indicated in its entirety with the reference number 1, is substantially composed of a lower frame 2 and an upper frame 3, which is articulated to the lower frame 2 around a first rotation axis 4, substantially horizontal, which is arranged parallel to the front plane. such as the backrest or headboard. / / STUDIO \-i\ / s / TECNICO-LEG A LeV^A |the PATENTS )“| \ jX Doit. Prof. v \FRANpO CICOGNA / The backrest or headboard structure, according to the present invention, also comprises a pair of lateral wings, 5a and 5b respectively, which are articulated to the upper frame 3, each around a second rotation axis, 6a and 6b respectively, substantially perpendicular to the first rotation axis 4, so as to be able to vary the position of the wings 5a and 5b, with respect to the upper frame 3, as will be better explained below. The backrest or headboard structure also includes retention means for maintaining the upper frame 3 in a predetermined angular position, relative to the lower frame 2, around the first axis of rotation 4. Furthermore, means are provided for retaining the side wings 5a and 5b, relative to the upper frame 3, around the second axis of rotation 6a and 6b. More specifically, the upper frame 3 is substantially composed of a pair of uprights 7a, 7b, which are joined, in an intermediate portion of their development, by a crosspiece 8 and, above, by a spring 9, while their lower ends are hinged to the lower frame 2 around the first axis of rotation 4. STUDY TECHNICAL-LEGAL PATENTS Qualities. Prof. FRANCO CICOGNA The means for retaining the upper frame 3 in a predetermined angular position, with respect to the lower frame 2, comprise a pair of joints, indicated in their entirety with the numbers reference IOa and 1Ob, which are arranged in correspondence with the hinge areas of the upper frame 3 to the lower frame 2, or in correspondence slope of the lower ends of the uprights 7a and 7b of the upper frame 3. Each joint 10a and 10b is substantially composed of a first discoidal element 11, which is made integral in rotation around the axis 4 with the upright 7a or 7b of the upper frame 3, and of a second discoidal member 12, which is instead integral, in rotation around the axis 4, with the portion of the lower frame 2, which is connected to the upper frame 3. The two disc-shaped organs 11 and 12 are coaxial with each other and their axis coincides with the first axis of rotation 4. The two faces of the discoid organs 11 and 12, which face each other, have radial stop notches 13. The latter are mutually committed due to the action of the first elastic means, which Z»y studio \A fs / tecnico-leg al e \*\ hi PATENTS j'j \ *\ Dolt. Pro( - 1^1 \j\franpo cicogna / * / act on the discoid organs 11 and 12, so as to press them axially, one against the other. The first elastic means consist of a cup spring 14, which rests with one of its axial ends against the head of a first pin 15, which centrally passes through the pair of discoidal members 11 and 12 and which is riveted, or in any case axially blocked, at its opposite end. The other end of the cup spring 14 rests against one of the discoidal members 11 or 12, or against the upright 7a or 7b of the upper frame 3, which is connected to this discoidal member, so that the two discoidal members 11 and 12 are kept elastically and constantly pressed against each other. As a result of this pressure, as mentioned, the radial notches 13 of the discoid members 11 and 12 engage with each other, preventing the rotation of the upper frame 3, with respect to the lower frame 2, around the axis 4. The lateral wings 5a and 5b are essentially made up of a rod-shaped element, or a tubular element, which is bent in an intermediate zone of its development and which is hinged with its Ay studio VA / ? / tecnico-leg a le\^\ hl PATENTS Kj \* \ Doll. Prat. V\FRANpO CICOGNA / «y longitudinal ends with ears 16a, 17a, 16b, 17b, which protrude laterally from the uprights 7a and 7b of the upper frame 3. The two longitudinal ends of the same rod-shaped element, which constitutes one of the lateral wings 5a or 5b, are hinged to the upper frame 3 around the same rotation axis 6a or 6b mentioned above. The lower end of each of the wings 5a or 5b is hinged to the relative ear 16a and 16b, by means of a pin 19, and its rotation is free, while the upper end of the lateral wing 5a or 5b is hinged to the upper frame 3 with the aid of retention means, to maintain the position of the lateral wing 5a or 5b at a predetermined angle, with respect to the upper frame 3. More specifically, the portion of the upper end of the wing 5a or 5b, which is hinged to the upper frame 3, has a radial serration 20a, 20b, which mates with a radial serration 21a and 21b, correspondingly provided on the portion of the upper frame 3, which mates with the side wing 5a or 5b. These radial serrations develop at I go back to the second axis of rotation 6a and I'm pressed STUDY TECHNICAL-LEGAL PATENTS Qualities. Prof. one against the other, by means of second elastic means 22. The hinging between the upper end of the side wing 5a, 5b to the upper frame 3 is achieved by a second pin 23a, 23b, which passes through the relevant portions of the side wings 5a and 5b and of the upper frame 3, defining the second axis of rotation 6a and 6b. The second elastic means 22 consist of a helical spring, which is fitted around the pin 23a, 23b. One end of the spring 12 engages against the portion of the upper frame 3 which carries the radial toothing 21a, while the other end of the coil spring 22 engages against a nut 24, which is screwable along the second pin 23a, 23b, so as to vary the degree of tensioning of the coil spring 22. By adjusting the pre-tensioning of the coil spring 22, it is possible to graduate the force that mutually presses the radial teeth, located on the upper end of the lateral wing Sa, 5b and on the portion of the upper frame, which supports the lateral wings 5a and 5b, so as to make easier or more difficult, depending on the STUDY TECHNICAL-LEGAL PATENTS Doli. Prof. FRANpO CICOGNA / Page 11 requirements, a rotation of the side wing 5a, 5b, relative to the upper frame 3, around the second axis of rotation 6a, 6b. The use of the backrest or headboard structure according to the present invention is evident from what has been described and illustrated so far. In particular, it is clear how it is possible to vary the inclination of the upper frame 3, with respect to the internal frame 2, by acting on the same upper frame 3, so as to cause its rotation around the first axis of rotation 4. The joints 10a and 10b block the rotation of the upper frame 3, with respect to the lower frame 2 at the desired angle and their resistance is such as to allow the user to rest securely against the backrest, without variations in the angle of the upper frame 3, with respect to the lower frame 2. Similarly, by acting on the lateral wings 5a and 5b it is possible to vary their angle, with respect to the upper frame 3, causing a rotation of the lateral wings 5a, 5b, with respect to the upper frame 3 around the respective axes 6a and 6b. The radial serrations, provided in correspondence with the hinge area of ​​the end X'X W STUDIO \A / ^ / TECHNICAL-LEGAL \A\ li PATENTS l“j P °9 \ j\ Doti. Prol. I~l V'XFRANPO CICOGNA / - / upper part of the lateral wings 5a and 5b, ensures the locking of the lateral wings 5a and 5b, when the rotation action ceases. Again, the rotational resistance offered by the radial serrations is such as to allow the user to rest securely against the lateral wings 5a and 5b. From what has been described above and from the analysis of the various figures in the attached drawing, it is clear that the invention fully achieves the proposed purposes. In particular, it is worth noting that the backrest or headboard structure is designed to offer a high level of comfort, thanks to the ability to vary the angle of the upper frame relative to the lower frame, as well as the angle of the side wings relative to the upper frame. This allows for a customized seating experience based on the user's needs. In practice, the materials used, as well as the dimensions of the components that constitute the present device, may be any, if according to needs.

Claims

RESELL Structure of back or header, par particularly designed for armchairs, sofas, beds or similar, characterised by the fact that it comprises a lower frame and an upper frame, articulated to the lower frame around a first axis of rotation substantially horizontal parallel to the frontal plane of the backrest or headboard, a pair of lateral wings being provided, each articulated to the upper frame around a second axis of rotation substantially perpendicular to the first axis of rotation; in correspondence with the sides of the upper frame, means are provided for retaining the upper frame, in a predetermined angular position, with respect to the lower frame, around the first axis of rotation of the lateral wings and, with respect to the upper frame, around the second axis of rotation.

2. Backrest or headboard structure, such as to claim 1, characterised in that the upper frame has a pair of uprights, joined by an intermediate crosspiece, and hinged with their lower end to the lower frame, around the first axis of rotation.

3. Backrest or headboard structure as STUDY TECHNICAL* LEGAL PATENTS Doll. Prof. to the previous claims, characterized by the the fact that the aforementioned a pair of joints Retention means include arranged in correspondence with the hinge areas of the upper frame to the te lower frame; each of said joints comprises a first discoid member integral with the lower frame in rotation and a second discoid member integral with the upper frame in rotation, said discoid members being arranged coaxially with each other along the first axis of rotation and presenting, on their mutually facing faces, radial stop notches, mutually engaged by the action of first elastic means, acting on one of the discoid members, in the direction of the other* 4. Backrest or headboard structure, as in one or more preceding claims, characterised in that the first elastic means consist of a cup spring, interposed between the head of a first pin, centrally passing through said discoidal members and defining the first axis of rotation, and one of the uprights of the upper frame.

5. Backrest or headboard structure, as per one or more previous claims, characterizes due to the fact that the aforementioned lateral wings are constituted [f / STUDIO \>\ / TECH I CO - LEGAL e\V\ hl PATENTS (l"A Doll. Prol. js) V\FRANpO CICOGNA / / each one made up of a rod-shaped element, bent and hinged with its longitudinal ends to the upper frame around the second axis of rotation.

6. Backrest or headboard structure, as per one or more preceding claims, characterised in that the retention means comprise a radial toothing defined in the portion of the upper frame hinged to a longitudinal end of the rod-like element constituting one of the lateral wings; the aforementioned radial toothing engages, by the action of second elastic means, with a corresponding radial toothing defined on the longitudinal end of the lateral wing, around the second axis of rotation, to block the rotation of the lateral wing, around the second axis of rotation, relative to the upper frame.

7. Backrest or headboard structure, as in one or more preceding claims, characterised in that the second elastic means are constituted by a helical spring, mounted around a second pin, which defines the second axis of rotation and passing through the lateral wing and the portion of said upper frame, connected to said lateral wing. rale, said spring acting between one end of the sec- < STUDY TECHNICAL-LEGAL PATENTS Qualities. Prof. do pivot and the portion of the upper frame, incei— nierata on the side wing for mutual commitment of radial teeth.

8. Structure of backrest or headboard, like to one or more claims previous, characteri- ta from the fact that the end of the second pin is with secured by a screwable nut along the second pin, to vary the pre-tensioning of this coil spring.

9. Backrest or headboard structure, as in one or more previous claims, characterised in that the upper ends of the uprights they are joined together by a spring.

10. Backrest or headboard structure, particularly designed for armchairs, sofas, beds or the like, as per one or more preceding claims, the whole, in substance, as more fully described and illustrated and for the purposes specified.