RU11670U1 - CHAIR - Google Patents

Abstract

A chair, the frame of which is made of metal tubular elements by welding, including a frame under the seat, mounted on pairs of legs connected in pairs, the rear ones being combined with the legs deflected back, which are connected by two transverse jumpers and serve as a support under the wooden arc-shaped bar with a cross-section underneath human hand, back with elongated ends, characterized in that the front legs are equipped with protrusions for attaching the elongated ends of the squared arc back, and between s and two transverse webs built support panel.

Description

Chair.

The utility model relates to furniture, to chairs, the frame of which is made of metal tubular elements by welding.

The prior art characterizes the chair described in the patent of the Russian Federation No. 2124857 from 21.01. Ш, А47С5 / 04, the frame of which is made by welding of metal tubular elements. The legs of the chair are fixed on a support under the seat and are rigidly connected by cross members. The rear legs are combined with the struts deflected back, connected by cross bars (extensions). At the ends of the racks, a wooden bar-shaped backrest is strengthened, the profile of which and the spatial position in interconnection with the racks are optimized to satisfy consumer qualities when sitting with people with different anthropometric data.

The surface of the wooden seat assembly is processed according to the profile of the supporting part of the seated person, which is convenient and does not tire out for a long time, moreover, being rigid, it is useful in the medical aspect and is favorable due to the biological effect on the body of the sitting person.

The chair is versatile, stable and easy to use; it has an extended period of clearing

The disadvantage of the described chair is that it has a limited area of use only as an official, for work in the workplace and in the office. The chair is not suitable for resting with the arms of the one sitting on the armrests to distribute the load on the bone skeleton and back muscles.

More comfortable and multifunctional is the chair according to the patent of the Russian Federation No. 20.01. Ш, А47С5 / 04, semicircular back

A 47 with 3/023, 5/04

which is made of hardwood with a width and shape under the hand of a person and is cantileverly fixed by means of spikes on the ends of the uprights of the support seat to form elongated ends located in the plane of the center of mass of the mortar ..

The frame is made by welding metal tubular elements. The legs are connected in pairs by concave arc cross members and are welded to the seat support. The backrests are reinforced with two transverse jumpers placed mezkd by the seat support and the squared arc back.

The rigid welded frame of the stable chair allows the seated person to lean back, leaning on the back with the mass of the body and on its cantilever protruding ends with the forearms of the hands, unloading the spine than to change the pose and temporarily rest without getting up from the chair.

The open space between the rear legs and the location of the cantilever ends of the squared back in the plane of the center of mass of the chair make it convenient to move it manually.

The round seat, open on three sides, allows a person to sit sideways in a chair, resting his elbow on the arc back, which creates additional convenience.

However, the disadvantage of this closest analogue is that the chair is not adapted enough for a complete rest of a sitting person, since there are no armrests whose functions are performed by the console elongated ends of the back, and there is no support for the spine and muscles of the entire back of the seated person, and this restricts the use of the chair only as a service, office and will reduce consumer demand.

of a well-known chair due to the destruction of the spike connection of the wooden NOA back at the ends of the racks from the action on its elongated cantilever ends of cyclic dynamic loads in operation.

The task to which this technical solution is directed is to expand the functionality of the chair and its comfort while maintaining the service life.

The required technical result is achieved by the fact that in a known chair, the frame of which is made of metal tubular elements by welding, including a frame under the seat, mounted on pairs of legs connected in pairs, the rear ones are combined with the uprights deflected back, which are connected by two transverse jumpers and serve as a support under the mounted on top of a debt wooden block with a cross section under the hand of a person, a back with elongated ends, at the suggestion of the author, the front legs are equipped with protrusions for I mount udlenonnyh all squared arc back, and between the uprights and cross bridges built support panel.

Distinctive features provided, without significant constructive improvements, the expansion of the functional capabilities of the chair and the area of its use.

The protrusions of the front noves above the frame of the seat serve as an additional support for the elongated ends of the wooden squared back, which are the armrests, which completes the design and artistic unity of the product in the form of a chair, both in shape and in purpose.

The proposed constructive design, in addition to utilitarian purpose - the convenience and comfort of a seated person - provides rigidity of fastening of the squared arc back, fixing its spatial half-life, which increases the service life.

The plane of the ipHTpa of the chair masses extends to the armrest sections of the backrest beam between the two supports (the protrusion of the front legs and the legs of the rear legs), therefore, when manually transporting, transporting the chair for the squared pile, exclude the generation of bending moment in its spike joints, which do not destroy the wooden seats backrests ,,

An additional panel of racks serves as a support for the body of a sitting person, contributing to the distribution of body weight, unloading of the bone skeleton and back muscles, which is necessary during relaxation for comfortable rest directly at the workplace.

The forms of structural elements and their stable interconnection are self-sufficient, not requiring additional elastic fillers, upholstery and decorative materials.

The proposed furniture design is universal, it serves both for work and leisure, which expands the use of the chair and determines its consumer demand at a relatively LOW cost.

Some of the essential features are necessary, and their totality is sufficient to achieve a novelty of quality that is not inherent in the signs in their disunity of a new super-effect, but not the sum of the effects by definition

A comparative analysis with identified analogues of the prior art showed that the proposed technical solution is not known and should not be used for furniture, can be reproduced serially in industrial production, then it meets the patentability criterion M.

which depicts:

in FIG. 1 - photo of a chair,

in FIG. 2 - schematically frame

in FIG. 3 is the same side view.

The front legs 1 of the chair (Fig. 2, 3) are connected by a meadow cross member 2 and aligned with the protrusions 3, and the rear legs 4 are aligned with the uprights 5 and connected by an arc cross member 6. Legs 1 and 4 along the transition line in places of alignment with the protrusions 3, the uprights 5, respectively, are rigidly welded with the frame 7 under the seat (figure 1). Racks 5 are connected by two jumpers 8, between which a support panel is placed (Fig. 1) with a plywood base and a semi-soft coating.

Legs 1 and 4, protrusions 3 and racks 5 are made of pipe 0 25x1.5mm, frame 7 - from pipe 0 19x1.5mm, crossbars 2, 6 and lintels 8 - from pipe 0 15x1.5mm.

At the ends of the protrusions 3 and uprights 5, the blind grooves in the interference fit, forming a spike connection (Fig. 3), are secured to the adhesive and secured with screws with a 9-hardwood backboard and hardwood. The arcuate back of Y at the end sections forms the NIKI 10 armrest, resting on protrusions 3, to which they are also mechanically connected.

The seat and the support panel of the struts 5 (Fig. 1) are attached to the frame with screws (not shown conditionally).

Cross section of a back: 9 with armrests 10, profiled one,. ,. . .- is made in shape and size under the wrist of a person’s hand, which is convenient for manually carrying the armrests 10, on which the forearms and palms of the hands are placed during rest.

.6

The backrest 9 with a support panel, integrated with the uprights 5 and transverse jumpers 8, serves to support the back of a seated person when the body is tilted back to rest.

The structural elements of the frame are welded together and form a strong, spatial supporting structure, which is stable and functional.

Noyaosi 1 and 4 are closed from below with plastic plugs (figL).

Lightweight, durable and stable. The multi-functional chair has an original elegant appearance of furniture with an aesthetically sophisticated look.

The proposed chair is intended for use in industry and everyday life, for offices and halls of social and cultural enterprises, for work and leisure.

Claims (1)

A chair, the frame of which is made of metal tubular elements by welding, including a frame under the seat, mounted on pairs of legs connected in pairs, the rear ones being combined with the legs deflected back, which are connected by two transverse jumpers and serve as a support under the wooden arc-shaped bar with a cross-section underneath human hand, back with elongated ends, characterized in that the front legs are equipped with protrusions for attaching the elongated ends of the squared arc back, and between s and two transverse webs built support panel.