Seats

 

(57) Abstract:

The invention relates to the sofas, bench seats with frames made from metal tubular elements and a swinging seat. Furniture for Seating contains upholstery with filler and stretched tape frame made of two bonded bridges spatial closed-loop mainly tubular profile. Support each loop from the back at the top is rigidly connected by means of curved beams and associated ends of the branches of the U-shaped cantilever seat, placed a cross with a banner bearing. The main loop of the frame is bonded with an additional internal arcuate beams installed in the places of the pair of armrests based, and cross-bar connected with her second stretch, which are located symmetrically to the seat. Furniture provides greater strength and stability and can be implemented in the manufacture of chairs, sofas and other furniture for sitting. 4 Il.

The invention relates to furniture for seats, in particular, sofas, bench seats with frames made from metal tubular elements and a swinging seat.

From the patent literature WPI is C rods, includes arcuate beam supports, armrests, seat and backrest, U.S. patent N 3870364, class A 47 C 3/00, 11.03.75.

U-shaped seat having a rigid cross member is mounted with the possibility of longitudinal movement between the arms, due to the hinge connection with the base on its front surface, and the ends of the branches seat supported on the floor of the room behind the chair. Vertical movement of the seat is limited by stops backless limit its tilting backwards from its original position.

The hinged connection of the seat base provides stability chair when the deflection under load backrest ago due to displacement of the fulcrum of the branches of the seat in the same direction.

The disadvantages of furniture for sitting is increased dimensions and the need for additional functional area and space for the moving branches of the U-shaped seat when the movable power circuit on a floor of a room, the surface of which is used up and deformed.

The balancing scheme of furniture for sitting rollover to a geometric circuit, seat stops back restricts the practical use.

Noted shortcomings in conspirationally spatial closed-loop mainly tubular profile, bearing each of them, from the back at the top of the loop, is rigidly connected by means of curved beams and connected with them bent ends of the U-shaped cantilever seat, placed the clearance between the arms and provided with a cross with a banner bearing capacity, utility model RU N 4665, class A 47 C 3/00, 16.08.97.

The frame is known of furniture for sitting, selected as a prototype, reinforced with additional inner loop, connected by bridges with the main loop, and curved beams supports their side of the backrest rigidly connected with the bent ends of the branches of the U-shaped seat that provides a combination of functions: swing seat, rigidity, compactness and simplification of the structure.

Structural strength of the frame is increased by the additional connection of the cross member of the seat by stretching with support and additional arched beams at the tops of its spatial loops, combined with the curved ends of branches seat, bonded with them and support beams.

A disadvantage of known construction, representing tubular farm of spatial closed-loop is the limit on realizationof and stability in case of unbalanced load on the seat because of the inevitable tipping point and strain point of twisting, that reduces the functional reliability and service life of the device.

Load condition of the sofa, in contrast to the chairs of the prototype, mostly asymmetrical, so this disadvantage is relevant and reasonable.

The task, which directed the present invention is to remedy these disadvantages and to obtain the novelty of quality, that is, a new verhaftet amount of essential features and not the sum of their effects.

The required technical result is achieved by the fact that in the famous furniture for sitting, containing upholstery with filler and covered with a ribbon frame made of two bonded bridges spatial closed-loop mainly tubular profile, bearing each side of the backrest at the top of the loop is rigidly connected by means of curved beams and associated ends of a U-shaped cantilever seat, placed with guaranteed clearance between the arms and is provided with a streamer bearing according to the invention, the main loop is bonded with an additional arcuate beams installed in the places of the pair of armrests support and the crossbar of the seat with it connected alnite seats in the form of a multi-piece sofa with reinforced carcass construction, retaining the characteristic advantages of the farm complex spatial shape of the arcuate tubular beams with oscillating cantilever seat, electrically connected in a single loop.

The framework proposed design provides a sofa guaranteed stability with an unbalanced load on the seat and back, because the center of mass is always located above the fixed surface.

Strengthening primary profile hinges additional arcuate beams in places pair of armrests based redistributes the load on the seat and the supporting elements of the frame and reducing the overturning moment that allows you to increase the length of the chairs before the sofa, increasing the functional reliability and service life of the product as a whole.

The connection of the cross member of the seat support by means of two symmetric stretching increases the resistance of the sofa with an uneven load on the seat due to the reduction of the force arm and the compensation spring action of the elements of the arch between the marks, which increases the stiffness of the cantilever mounting of the seat, eliminates distortion and overturning.

Each of the essential features separately necessary and together sufficient is Eskom result in implementation.

The proposed solution is unknown from available sources of information, is not obvious to a person skilled furniture maker from the prior art and is industrially applicable in the mass production of multi-chairs and sofas, i.e. meets the criteria of patentability.

The invention is illustrated by drawings, which shows:

in Fig.1 - sofa bed in the ISO;

in Fig.2 - frame, side view;

in Fig.3 - the same, top view;

in Fig.4 - the same, rear view.

The proposed sofa as a bench seat contains upholstery 1 made of artificial leather, which covers the foam filler 2 laid on the surface, formed by an endless belt 3 wound on rigidly connected by crosspieces 4 are two loops 5 and 6 of the frame from a pipe diameter of 25 mm and a wall thickness of 2 mm, the main external and more internal, respectively. Both loops 5 and 6 are made in the form of a closed spatial rings of arched beams 7, 8 and 9 support, armrests and backrest, successively welded together.

The u-shaped seat 10, the width is slightly less than the distance between the armrests 8 loop 6, the console attached to the supports 7 from the s seat 10 marks 12, welded to the cross member 13 and the support 7.

Between the outer free face of the seat 10 and the cross member 13 is fixed equipartition paired elastic rod zigzags 14 - spring.

The frame is equipped with a power elements - arched beams 15 and 16 welded to the bent ends 11 of the branches of the seat 10 and seat mates support 7 with armrests 8 main loop 5, respectively. Beams 15 and 16 is made on the configuration of the main load-bearing elements of the framework with which they are rigidly connected.

From the bottom to the supports 7 are attached plywood 17, carrying the filler 2 and to which is attached upholstery 1.

The spatial shape of the frame provides stability of furniture for sitting, as in the arches of the branches 5 and 6 are countervailing forces of tension and compression, and overturning moments of the loads on the seat 10 and the back 9 are directed oppositely. The fastening seat 10 different supports 7 loops 5 and 6 by means of the bent ends 11 and 12 marks in longitudinal section forms the arch (Fig. 2), where the main pressures on the seats are distributed almost evenly on all load-bearing elements and compounds. When this cantilever mounting seat 10 is elastic, which provides ASS="ptx2">

The furniture of the proposed forms and designs match the parameters of anthropometry, characterized by a dynamic strength and in the absence of friction elements and details creak in different load conditions for extended life.

Additional beams 16 which are welded in places pair of arms 8 with external support 7 had increased strength by distributing the load of the most loaded element design, which increases the lifetime of the furniture.

Sources of information

1. U.S. patent N 3870364, class A 47 C 3/00, NAT.CL.297/294, publ. 11.03.75.

2. Testimony N 4665 utility model, class A 47 C 3/00, publ.in bull. N 8 from 16.08.97 prototype.

Furniture for sitting, containing upholstery with filler and stretched tape frame made of two bonded bridges spatial closed-loop mainly tubular profile, bearing each side of the backrest at the top of the loop is rigidly connected by means of curved beams and associated ends of the branches of the U-shaped cantilever seat, placed the clearance between the arms and provided with a cross with a banner bearing capacity, the ex is different in places the pair of armrests support and the crossbar of the seat connected with her second stretch, which are located symmetrically to the seat.

 

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