Chair

 

(57) Abstract:

Use: in the construction of chairs, in particular, with frame made of tubular elements. The technical result consists in increasing the elasticity of the chair while reducing weight and size. The inventive chair includes a frame, including the frame of the backrest 1 + 2, base 3 and the seat 4, interconnected. The frame 4 of the seat connected to the frame 3 of the base from the back through the connection of the branches of the U-beams 10 of the frame 4 with beams 8, 9 of the frame 3. In connection installed additional beams 14 and 15. The ends of the branches of the U-beams 10 are bent at an acute angle and directed toward the seat. The branches 11 of the beam 10 are connected by cross bars 12, which are attached to the flat spring 13, the frame 4 of the seat is located between the beams 5, 6 of the frame 1 of the back, which are interconnected with jumper 7. The bracket plywood, glued foam rubber, which is fitted upholstery. The connection frame 4 of the seat frame 3 base side of the backrest and a command-line position of the frame 4 of the seat, passing between the beams 5, 6 of the frame 1 backrest, provide elasticity to the seat. The implementation of the framework in the form of a spatial loop containing consolino the poor. 3 C.p. f-crystals, 25 ill.

The invention relates to designs of chairs, in particular, with frame made of tubular elements.

From U.S. patent N 3870364, CL F 47 C 3/00, NPK 297/294, 1975 known to the chair, containing a support, a seat and backrest with armrests, made in the form of respective frames, connected with the formation of the frame of the chair, the upholstery and the filler of the base frame and backrest contain arched beams and associated jumper, seat frame consists of a U-shaped beams, the branches of which are connected by cross-beams, seat frame connected to the support frame with swing and with the formation of spatial loop, the transverse size of the seat is less than the distance between the respective armrests parts of the backrest. The connection of the seat frame by frame basis, forming the top of the loop spatial placed in front and made the hinge, and the ends of the branches of the U-shaped beams seats are designed for supporting on the floor, what ensures the firmness of the seat. However, increasing the size of the chair, and, in addition, when the deformation of the seat the ends of the branches of the U-shaped beams seat is moved across the floor, which is a disadvantage of the known chairs. It is the seat of pprovost seats while reducing its weight and size and give the chair the original spatial layout.

The invention consists in the following.

The chair, as the closest analogue that comprises a support, a seat and backrest with armrests, made in the form of respective frames, connected with the formation of the frame of the chair, the upholstery and the filler of the base frame and backrest contain arched beams and associated jumper, seat frame consists of a U-shaped beams, the branches of which are connected by cross-beams, seat frame connected to the support frame with swing and with the formation of spatial loop, the transverse size of the seat is less than the distance between the respective arms of the backrest, but unlike most similar analogue of the base frame contain at least one additional curved beam connected with the main ridges, and are interconnected by respective sections of curved beams with the formation of spatial ring, the end of each branch of the U-shaped frame beams made curved at an acute angle, the top of which corresponds to a peak spatial loop, and is connected to the arcuate base beams from the back seat.

The chair is characterized by the fact that at least one of the beams of wypolnena arc.

Feature of the chair is accommodation at the place of connection of the ends of the branches of the U-shaped seat with a curved base beams additional curved beams connected with these beams, seat and base.

In addition, we offer the seat frame to perform additional longitudinal arcuate beams, curved at an acute angle, the top of which corresponds to a peak spatial loop, connected to respective ends and arcuate base beams.

These characteristics are essential to achieve a technical result and interconnected.

Performing a chair containing a support, a seat, a backrest, with armrests, made in the form of respective frames, connected with the formation of the frame of the chair, the upholstery and the filler, the execution of the base frame and backrest containing at least two (namely the primary and at least one additional) curved beams, connected by bridges, the connection of these frames between a respective end sections of the curved beams with the formation of spatial ring, the execution of the seat frame containing the U-shaped beam, the arcuate base beams from the side of the backrest provide stiffness and compactness of the chair.

Performing the lateral dimension of the seat lesser distance between the respective armrests area of the back and the connection to the seat base with the ability to swing and with the formation of spatial loop with the apex of the loop located on the side of the backrest and the appropriate form of the ends of the branches of the U-shaped beams of the seat provides a firm Seating for smaller chairs, and gives the chair originality.

Performing at least one beam from a curved pipe, which in at least one bend is made with radial slits from the center of the arc improves the manufacturability of the chairs by reducing load during bending of the beam and contributes to maintaining the smooth lines of the beam at the place of bending due to the exclusion of local buckling (buckling) of the pipe wall in place of a bend.

Extra roll-formed beams at the junction of the ends of the branches of the U-shaped beams with curved base beams and their connection with these beams seat and base increases the durability of the frame of the chair by increasing the strength of the most responsible loaded connections in the frame of the chair.

Equipment frame side is tstuat the top of the spatial loops, and their connection with the cross members of the frame of the seat and arched base beams also improves the durability of the frame due to load balancing on multiple connections and provides the validation of the pair of the base and seat smooth shape.

In Fig. 1 shows the frame of the chair in isometric in Fig. 2 - the main arcuate upper beam of the frame, backrest, side view; Fig. 3 is a view in plan; Fig. 4 - additional arcuate lower beam of the frame, backrest, side view; Fig. 5 is a view in plan; Fig. 6 - the main arcuate outer beam of the base frame, a view in plan; Fig. 7 - additional arcuate inner beam of the base frame, a view in plan; Fig. 8 is interconnected arcuate outer and upper beams of the frame base and backrest, side view; Fig. 9 is a view in plan; Fig. 10 is interconnected inner and lower arcuate beams of the frame base and backrest, side view; Fig. 11 is a view in plan; Fig. 12 is connected between a base frame and backrest, front view; Fig. 13 - the same, lateral view; Fig. 14 is a view in plan; Fig. 15 - frame, seat, side view; Fig. 16 is a front view; Fig. 17 is a view in plan; Fig. 18 - the frame of the seat Assembly, type speese in ISO when attaching the sheathing to the frame of the backrest; in Fig. 23 chair in isometric in Fig. 24 is a view of B in Fig. 22 of Fig. 25 - section 1-1 in Fig. 24.

A useful model is arranged as follows.

The chair includes a frame, including the frame of the backrest 1 + 2, base 3, a seat 4 formed beams connected by jumpers (Fig. 1).

Frame 1 back contains the top 5 and bottom 6 core and at least one additional curved beams, for example beams interconnected by a jumper 7 (Fig. 1-5). In a preferred embodiment, the beams 5, 6 of the frame 1 of the backrest is made curved, with gibs located in different planes.

Frame 3 base contains 8 external and main and at least one additional curved beams, such as internal beams 9 (Fig. 6, 7). In a preferred embodiment, the seat beams 8, 9 of the frame 3 is made curved, and the arc is located in the same plane with the ends of the beams 8, 9.

Frames 1, 3, backrest and base are interconnected by connecting the upper beam 5 with external beam 8 (Fig. 8, 9) and the lower beam 6 with the inner beam 9 (Fig. 10, 11). While the upper beam 5 and 8 external beam frames 1, 2, backrest and base form a closed spatial contour of the eye is first spatial path. These circuits are interconnected by crosspieces 7, forming the skeleton in the form of spatial ring (Fig. 12-14). In a preferred embodiment, the chair of the connection beams 5, 8 and 6, 9 between itself and the beams 5, 6 with cross bars 7 are welded.

The frame of the seat has a U-shaped beam 10, is made curved with bends in different planes. The branches 11 of the beam 10 are interconnected by a cross member 12 (Fig. 15-17), to which is attached a flat spring 13 (Fig. 1, 18-22). You can perform the U-beams 10 composed of interconnected longitudinal beams (not shown), however, in the preferred embodiment, the beam 10 is made of one piece.

The ends of the branches 11 of the U-beams 10 from the side frame 1 of the seat back bent at an acute angle, and is directed towards the seat (Fig. 15, 17). The curved ends of the branches 11 of the U-beams 10 are connected, for example, by welding with external 8 and 9 internal beams of the frame 3 of the base. In connection installed additional curved beams 14, the ends of which are connected with beams 8, 9 of the frame 3 of the base, the ends of the branches 11 of the U-shaped frame 4 of the seat. The connection frame 4 of the seat frame 3 of the base is reinforced with at least tx2">

The transverse size of the frame 4 of the seat is less than the distance between the respective arms 2 plots the frame 1 of the back, due to the connection frame 4 of the seat frame 3 base attached to the frame and the seat form a spatial loop (Fig. 1, 23), the top 16 which is on the side of the seat back.

In a preferred embodiment, the connection of the branches of the U-shaped frame beams 10 with crossbars 12, additional curved 14 and additional longitudinal arcuate 15 beams, with the beams 8, 9 of the base is made of welded. Beams 5, 6, 8, 9, 10, 14, 15 it is advisable to run out of the pipes. In the case of execution of the beams of the tubes to prevent local buckling of the pipe wall in place of a bend on the pipe by bending a radial slits (grooves), and the width and depth of the slits (grooves) must ensure that contact opposite sides of the slits (grooves) in place of the minimum bend radius (not shown).

To make the frame around the upper and lower beams 4, 5 is wound with the tape 17, which is then glued to the beams 5, 6 of the frame 1 of the back. To the frame 4 of the seat base 3 is attached plywood 18, which is then glued filler 16, such as foam and batting (fitted upholstery 20, for example skin (Fig. 23).

The invention operates as follows.

The frame of the chair is assembled in the following sequence.

Blanks for beams 5, 6, 8, 9, 10, 14 Flex pattern. The ends of the beams 5, 8 and 6, 9 frames 1, 3 backs and bases are interconnected, for example, by welding (Fig. 8-11). Top 5 and bottom 6 of the beams of the frame of the backrest are connected by a cross member 7. This forms the frame of the backrest and the base frame in the form of spatial ring.

Then going to the frame 4 of the seat, which branches 11 of the U-beams 10 are connected by cross bars 12, which are attached to the flat spring 13. The ends of the branches 11 of the beam 10 are connected, for example, by welding, with 8 external and internal beams 9 of the frame 3 of the base. At the junction of the ends of the branches 11 of the U-beams 10 with beams 8, 9 of the frame 3 reasons are more curved beams 14, which connect, for example, by welding both ends of branches 11 of the U-beams 10 of the frame 4 of the back, and beams 8, 9 of the frame 3 of the base. In the plane of symmetry of the chair impose additional longitudinal arcuate beams 15 and connect it with the cross members 12 of the frame 4 of the seat and beams 8, 9 of the frame 3 of the base. If e is consistent bending of beams 10, 12, 14.

After Assembly of the frame of the chair to the top 5 and bottom 6 beams of the frame 1 back stick tape 17, attached to beams plywood 18, it is glued filler 19, for example foam rubber, which is fitted upholstery 20.

After operations, the chair is made.

The chair operates as follows.

When loading frame 4 of the seat load is transmitted to the connection point of the beams 10, 14, 15 of the frame 4 of the seat with beams 8, 9 of the frame 3 of the base. Frame 4 of the spring seat relative to the attachment frame 4 of the seat to the frame 3 of the base, which increases the elasticity of the seat and creates convenience for the user.

The execution frame of the chair in the form of a spatial loop gives the chair an elegant, original form with low weight and dimensions.

1. The chair, containing a support, a seat and backrest with armrests, made in the form of respective frames, connected with the formation of the frame of the chair, the upholstery and the filler of the base frame and backrest contain arched beams and associated jumper, seat frame consists of a U-shaped beams, the branches of which are connected by cross-beams, seat frame connected to the support frame with swing and oblokotilas areas of the back, characterized in that the base frame and backrest contain at least one additional curved beam connected with the main ridges, and is connected between a respective end sections of the curved beams with the formation of spatial ring, the end of each branch of the U-shaped beams of the seat frame is made curved at an acute angle, the vertex of which is the peak spatial loop, and is connected to the arcuate base beams from the back seat.

2. The chair under item 1, characterized in that at least one of the beams is made of a bent pipe, which in at least one bend is made with radial slits from the center of the arc.

3. The chair on the PP.1 and 2, characterized in that the junction of the ends of the branches of the U-shaped seat frame with arched base beams placed additional curved beams connected to the beams of the seat and the base.

4. The chair on the PP.1 to 3, characterized in that the frame of the seat provides additional longitudinal arcuate beams, curved at an acute angle, the top of which corresponds to a peak spatial loops, and United the respective ends of the strut frame

 

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