(57) Abstract:The invention relates to furniture, in particular office chairs with frame made of tubular metal elements mounted on a height-adjustable swivel bearing. The chair contains mounted on a height-adjustable swivel bearing seat, curved armrests and backrest, metal tubular frame which represents the structural integrity of precast frame elements. To the frame of the backrest welded secured to the support platform, equipped with a telescopic clamp, made in the form prescribed in the guide, in front of the adjusting screws, two rods connected by a spacer. Frame armrests are made of coaxial tubular profile. The invention provides a simplification of the manufacture and Assembly of the chair, adjusting his frame elements for the formation of a rigid supporting frame, bystriansky for compact transport and storage. The chair is functional, sustainable and convenient, has a longer lifetime for irregular dynamic loading in work and leisure. 1 C.p. f-crystals, 8 ill. The invention relates to furniture for sitting, h is the height of the swivel bearing.The known device for a seat comprising a backrest, seat and armrests, frame made of welded metal tubular elements in the form of a combination of spatial closed-loop equipped with crossbars reinforcement and elastic elements (RU 2103898, class. AND 47 3/021, 1996; EN 2121805, class. And 47 3/023, 1998).These known constructions have the conciseness and expressiveness of form, convenient and practical in operation, stable in dynamic non-uniform loads.However, the drawback of this furniture is their bulkiness during transport and storage due to the rigid connection of the structural elements of the frame by welding, which limits the mobility in the interior and increases the volume of work involved in the manufacture.Noted shortcomings in an office chair, containing a seat, a backrest and curved armrests mounted on a standard rotary support, height-adjustable (industry magazine "Furniture manufacturer", 7(17), September 2000, S. 48-50, Vilnius: Vilspa).This design of the chair differs in that the frame is a snap-together connection structural frame elements - seat, armrests and backrest, fur the BNO for compact transport and storage of disassembled to the frame elements.The disadvantage of the design is the complexity of the manufacturing precision of the mating parts, which increases consumer cost of the chair. When a universal serial production of these chairs frame frame Assembly determines the relatively large clearances in the joints, which progresses in the dynamics of operation, limited life time. When using the consumers are experiencing discomfort and inconvenience from the volatility of structural frame elements.The closest analogue of the invention is a chair on the published application Germany 3116614, class. And 47 3/025, 08.04.1982 containing mounted on a height-adjustable swivel bearing bearing metal tubular frame consisting of rigidly interconnected frame elements of the seat, backrest and curved armrests and mounted on a support platform.The disadvantages of this chair is the complexity of design and manufacture, which determines its high cost and inconvenience in operation.The objective of the invention is to simplify the design, improving quality, performance and service life. This technical result achievement of the second tubular metal frame, consisting of rigidly interconnected frame elements, seat, backrest and curved armrests and mounted on a support platform to the frame of the backrest welded secured to the support platform, equipped with telescopic retainer, including installed in the guide bars connected by transverse spacer and adjusting screws, move the spacer to the jamming of the seat frame and fixing the position of the seat relative to the backrest frame armrests are made of coaxial tubular profile, and the opposite end of the seat frame is connected with the crossbar of the frame of the backrest.Movable relative to the guide adjustment screws provide kinematic circuit elements of the frame in a rigid supporting structure by means of the power circuit of the seat frame between the upright backrest and movable telescopic strut clamp platform. Autonomous adjustment rod movable spacers to compensate for technological inaccuracies of manufacture frame frames in mass production, the distortions of the Assembly and to hold the selected position of the seat relative to the backrest.Equipping the seat frame end persecutions latch, which allows the seat to samoustraniajutsia in the optimum position when the axial Autonomous supply rod spacer retainer.The implementation of the arms in the form of coaxial tubular profile increases the bearing area for hand setting and creates additional convenience of placing them in is formed between the pipe groove.In Fig. 1 shows a photo of the chair.In Fig.2 is a view of the tubular frame of the backrest side.In Fig.3 is a view along arrow a in Fig.2.In Fig.4 is a view along arrow B in Fig.2.In Fig.5 is a view along arrow b of Fig.2.In Fig.6 - seat frame, top view.In Fig.7 - section G-G in Fig.6.In Fig.8 is a cross-section of the frame of the armrest.Office chair includes adjustable height swivel bearing 1, bearing tubular metal frame 2 is rigidly connected frames, seat 3 and the backrest 4 and curved armrests 5.The frame 2 of the structural elements 4 (Fig.2, 3) and 5 (Fig.8) made of thin-walled steel pipe h,5 mm frame support structures. The free ends of the arched form of the frame of the backrest 4 is welded to the bottom platform 6 (Fig. 4), through which the planting holes 7 the lips of the free ends of which are mounted arc armrests 5.On the platform 6 at the top are welded two tubular guide 10 (Fig.5) under longitudinal rods 11, which are interconnected by transverse strut 12. Coaxial guides 10, from the side of the free ends of the rods 11 is converted to the frame of the backrest 4 of the frame 2, the platform 6 is mounted adjustment screws 13. This mechanism performs the function of the telescopic lock position seat 3 relative to the backrest 4.On both sides of the frame of the backrest 4, over the crossbar 9, performed through holes 14 for mounting bolts armrests 5.Frame, seat 3 (Fig.6 and 7) are made of steel pipes with a diameter of 12 mm with a wall thickness of 1 mm in the shape of an arch with curved ends in the form of loops and reinforced along the length of the welded cross bars 15 of the same pipe.Arcuate frame armrests 5 (Fig.1) made of welded together congruent paired profiles (Fig.8), having at the ends of the holes, one of which is intended for mounting on the free end of the crossbar 9, and the second is combined with a hole 14 of the frame of the backrest 4, where the post of General mounting bolts, hidden plugs (conventionally not shown). The outer profile of the frame arms 5 forms a groove 16, comfortable accommodation l what do you seal and the top covered with a woven material or artificial leather (Fig.1).Seat 3 rear loop end frame mounted on the crossbar 9, based on the spacer 12 and then fed by hand until it stops in front loop of the seat frame 3. Further rotation of the screws 13, abutting against the rod 11, and moves the spacer 12 to jamming in the front end of the loop the seat frame 3, what is its geometric closure.When the Autonomous moving rod 11 is achieved by maximum junction of the struts 12 to the mating front loop of the seat frame 3 for power circuit elements of the frame 2 and create a rigid supporting structure to compensate for the gaps, the gaps and distortions from inaccurate manufacturing for free tolerances and Assembly of the separate parts.Compact and simple design of the telescopic position lock seat 3, simple to use and reliable in operation, combined with frame and 2 chairs and is hidden inside that ensures the safety of appearance stylish furniture for sitting and aesthetic merits of the design office chair. When this adjustment mechanism telescopic latch is open on the underside of the seat 3 and is easily accessible for maintenance and adjustment.The chair of the mounting elements easy to assemble user who nd 4, comfortable armrests 5, ensuring a comfortable stay. It is freely adjustable seat height for people with different anthropometric data.In work and leisure time, sitting in a chair, provides mobility of movement and orientation in space.Improving the consumer qualities of the chair is determined by the functional concise, artistic expression and long life.Strong and durable furniture for sitting is aesthetically expressive, convenient in practical use for private and public consumption, in the office, office space, offices and meeting rooms. 1. Chair, containing mounted on a height-adjustable swivel bearing bearing metal tubular frame consisting of rigidly interconnected frame elements of the seat, backrest and curved armrests and mounted on a support platform, wherein the platform is welded to the frame of the backrest and fitted with telescopic retainer, including mounted in guides two bars connected by transverse spacer, and adjusting screws, move the spacer to Seclin the visions of connected with the crossbar of the frame of the backrest.2. The chair under item 1, characterized in that the frame armrests are made of coaxial tubular profile.
FIELD: personal use articles.
SUBSTANCE: invention relates to the structure of seats with adjustable slant or tilt. The seat structure includes a support frame, a seat and a back. The seat includes the seat frame, formed by the side pieces, the front cross piece and the rear cross piece and pivotally connected to the support frame by means of at least one attachment mechanism positioned below the seat surface. At least one balancing spring is installed between the seat and the support frame, containing the first and second side elements as well as the front and the rear frame elements. The attachment mechanisms are installed symmetrical relative to the seat as compared to the seat central axis so that the pivotal joint axis passes between the knees and thighs of the user sitting on the seat structure in a conventional posture, with legs parallel and tilting on the seat back. The attachment mechanism is positioned between the side pieces of the seat and the side elements of the support frame.
EFFECT: enhanced comfort of the user accommodation of a device containing such seat.
8 cl, 11 dwg