RU2576227C1 - Stool - Google Patents

Abstract

FIELD: furniture.

SUBSTANCE: invention relates to stools and is aimed at increasing rigidity of stool with an overall simplification of structure. Stool comprises a seat, associated with pairwise crossed flat bases directed at an angle to surface of seat. One of legs with pairwise crossing is located with its plane in vertical plane of symmetry of stool and in middle part stool crosses second leg piece located in plane perpendicular to plane of first leg, through hole made at its root profile crossing, mainly perpendicular, and ends of legs are inserted into holes of seat made at cross section profile and at angles corresponding to angles of inclination of legs to seat surface.

EFFECT: increased rigidity of stool with overall design simplification.

5 cl, 4 dwg

Description

The present invention relates to the production of kitchen and garden furniture and can be used in everyday life, as well as for outdoor recreation.

Of the patented designs, a stool is known, which consists of a seat connected with crossed legs mounted on axles fixed in a rectangular crosspiece located in the middle of the stool. The legs are mounted with the possibility of rotation to the limit stops (US 1896446 A, publ. 7.02.33).

The disadvantages of this technical solution are the complications consisting, in addition to the seat and legs, of additional parts and structural elements: a rectangular cross, fixed axes, restrictive stops, etc. and, as a result, an increase in material consumption, mass, complication of the manufacturing process and assembly.

Of the later patents granted, a stool is known, which consists of a seat associated with three crossed legs mounted on studs-axles forming a cross-tee located in the middle of the stool. The legs are mounted on studs with the possibility of rotation to the fixing grooves made in the legs, and securing them with wing nuts (US 2358059 A, publ. 12.09.44)

This design is complicated by a spider, wing nuts, legs of complex shape and profile with the execution of fixing grooves in them, and for reliable fixing of the legs it is necessary to unscrew and tighten the wing nuts, and it takes physical effort and time to tighten the nuts.

Closest to the claimed technical solution is a stool (RU No. 2057474, publ. 04/10/1996), consisting of a seat and crossed legs connected to a multi-faceted stiffener, located in the middle of the stool with nails, in which the legs are crossed in pairs in parallel planes passing through the edges of the square stiffener.

The disadvantages of this technical solution is the complexity of the design, which consists in the use of a stiffening rod and many nails for satisfactorily fixing the legs on the rod, the node for securing the legs is cumbersome, increasing material consumption and costs. Due to the nail joints of the legs with the rod, as well as their pairwise arrangement in parallel planes, hinged parallelograms are formed, and the stiffness of the stool is ensured by the rigidity of the nail joints related to the hinges, which cannot be recognized as sufficiently reliable. The adaptation to gender irregularities described in the description as a positive effect is also a significant drawback consisting in the insufficient stiffness of the stool. Mobility in nail joints during intensive use will inevitably lead to an increase in their loosening and rapid breakdown.

The task to which the invention is directed is to simplify the design and increase the stiffness of the stool.

This problem is solved due to the fact that the claimed stool containing a seat associated with intersecting pairwise flat legs (width greater than thickness) directed at an angle to the seat surface has the following differences: one of the legs in pairwise crossing is located with its plane in the vertical plane of symmetry the stool and in the middle part of the stool crosses the second leg, located in the plane perpendicular to the plane of the first leg, through an opening made along the profile of the leg crossing it, predominantly perpendicularly, and the ends of the legs are inserted into the holes of the seat, made along the cross-sectional profile and at angles corresponding to the angle of inclination of the legs to the surface of the seat.

The stool can be assembled with a swivel joint of the seat and legs with a hole.

The stool can be assembled with a seat made without holes and resting on the ends of the legs.

The stool can be assembled from two pairs of legs intersecting during crossing and located symmetrically relative to the vertical plane of symmetry of the stool in parallel planes.

The stool can be assembled from two pairs of legs intersecting during crossing and located symmetrically with respect to the vertical plane of symmetry of the stool in parallel planes, and two legs of one pair of each pair located symmetrically with respect to the vertical plane of symmetry of the stool, are bent at the intersection with the seat and protruding above the seat elongated ends secured back.

The technical result provided by the given set of features is to simplify the design and increase the stiffness of the stool. The legs are interconnected and the seat without intermediate and fasteners, which simplifies the stool. One of the legs intersecting during pairwise crossing is inserted into the other through the hole in the last, and the upper ends of the legs are inserted into the holes made in the seat under them. After joining the legs and the seat, it is enough to sit on the stool, after which all the joints are jammed, the stiffness increases due to the elimination of mobility in the joints and the stool can be transferred and used as a non-separable. The assembly does not require tools, fasteners, or special skills and takes a few seconds.

As a result, by simplifying the design, a reduction in mass, material consumption, simplification of manufacturing technology, assembly, etc. is also achieved.

The invention is illustrated by drawings, which depict:

In FIG. 1 is a drawing of a stool on two legs in three projections.

In FIG. 2 is a drawing of a stool with a seat resting on two legs in three projections.

In FIG. 3 is a drawing of a stool, on four legs in three projections.

In FIG. 4 is a drawing of a stool, on four legs with two elongated and a back, one projection (side view).

The proposed stool, FIG. 1, consists of a seat 1 connected to legs 2 and 3. The above structural elements are made as follows. The rectangular seat is carved from plywood 18 mm thick. Near the opposite edges of the seat, holes are made for the ends of legs 2 and 3. The holes are made along the cross-sectional profile of the legs and are located at an angle to the surface of the seat corresponding to the angle of inclination of the legs. Leg 2 is cut out of multilayer plywood 12-14 mm thick and has the shape of a board. In the middle part, an angle is predominantly 90 °, a longitudinal hole is made to the plane of the leg along the cross-sectional profile of leg 3. Leg 3 is rectangular in profile, cut from plywood 12-14 mm thick, the ends of the legs are beveled horizontally. Leg 2 with the upper end inserted into the corresponding hole in the seat (on the extension element "a" of the drawing is shown with an increase). Leg 3 is inserted into the hole made in the middle of leg 2, and the upper end is inserted into the corresponding hole in the seat. All connections are made in a tight fit with an effort of at least the weight of the stool, excluding the loss of legs. When landing on a stool, all joints are jammed, after which the stool can be moved and used as a non-separable. Considerable physical effort is required to disassemble. Disassembly can be facilitated by using legs as levers. The disassembled stool is compact (all parts are flat).

The seat 1 can be connected to the leg 2 pivotally (on the extension element "b" of the drawing is shown with an increase).

In FIG. 2 shows a drawing of a stool, the seat of which is made without holes and rests on the ends of the legs. In this embodiment, the stool can be quickly disassembled. Assembly and disassembly in 2 seconds. The seat is not fixed and is carried separately. The stool shown in FIG. 1, using the back of the seat as the main one (for instant assembly and disassembly with short-term use).

In FIG. 3 shows a drawing of a stool with four legs. The positions of the elements correspond to the positions shown in the drawing, FIG. 1. The drawing does not require additional explanations.

In FIG. 4 shows a drawing of a stool on four legs with a back (chair). As can be seen from the drawing, two legs with holes are bent at the intersection with the seat and higher, and in the upper part a back is attached to them.

The seat in the above-described stool designs can be fixed or fixed in another simpler way (not shown in the drawings), for example, on cylindrical dowels, you can also put it on top of the connection of two legs (traveling option), can be fixed on glued Velcro or using double-sided scotch tape, you can use the seat without holes (simplification of manufacture) or turn the seat over, using the back side as the main one (significant acceleration of assembly and disassembly up to 2 seconds).

For the manufacture of stool parts, any materials suitable for this can be used (wood, metal, plastic, etc., as well as their combinations).

Claims (5)

1. A stool containing a seat associated with pairwise crossing flat legs (width greater than thickness) directed at an angle to the seat surface, characterized in that one of the legs, when pairwise crossed, is located with its plane in the vertical plane of symmetry of the stool and intersects in the middle of the stool the second leg, located in a plane perpendicular to the plane of the first leg, through an opening made along the profile of the leg crossing it, mainly perpendicularly, and the ends of the legs are inserted into Verstov seat formed in the profile cross-section and at angles corresponding to the angles of inclination of the legs to the seat surface. 2. The stool according to claim 1, characterized in that the seat and the leg with the hole are pivotally connected. 3. A stool containing a seat connected with two flat legs intersecting in pairs (width greater than thickness) directed at an angle to the seat surface, characterized in that one of the legs, when pairwise crossed, is located with its plane in the vertical plane of symmetry of the stool and intersects in the middle of the stool the second leg, located in the plane perpendicular to the plane of the first leg, through an opening made along the profile of the leg crossing it, mainly perpendicular, and the seat rests on top s ends of the legs. 4. A stool containing a seat associated with two pairs of intersecting pairwise flat legs (width greater than thickness) directed at an angle to the surface of the seat, characterized in that one of the legs of each pair when pairwise crossing is located with its plane in a vertical plane parallel to the plane of symmetry of the stool and in the middle part of the stool crosses the second leg, located in the plane perpendicular to the plane of the first leg, through an opening made along the profile of the leg crossing it, mainly but perpendicularly, and the ends of the legs are inserted into the holes of the seat, made along the cross-sectional profile and at angles corresponding to the angles of inclination of the legs to the surface of the seat. 5. A stool containing a seat associated with two pairs of intersecting pairwise flat legs (width greater than thickness) directed at an angle to the surface of the seat, characterized in that one of the legs of each pair when pairwise crossing is located with its plane in a vertical plane parallel to the plane of symmetry of the stool and in the middle part of the stool crosses the second leg, located in the plane perpendicular to the plane of the first leg, through an opening made along the profile of the leg crossing it, mainly but perpendicularly, and the ends of the legs are inserted into the holes of the seat, made along the cross-sectional profile and at angles corresponding to the angles of inclination of the legs to the surface of the seat, and two legs in one of each pair are bent at the intersection with the seat, and protruding above the seat elongated ends fixed back.

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