RU2189163C2 - Wall chair with hinged seat - Google Patents

Abstract

FIELD: domestic facility. SUBSTANCE: wall chair has back attached to wall and equipped with side walls and hinged seat pivotally connected to back. Supporting bar is positioned between side wall lower parts extending forward. In operating position seat is lying on supporting bar to transmit loading of sitter's weight to back. In operating position rear part of seat abuts against back from below. Springy member is positioned in cavity defined by side walls and supporting bar and offset relative to seat axis of rotation. Springy member is adapted for moving seat from intermediate position to vertical position and for holding seat in this position. Seat is hold in horizontal position by gravitational force. Wall chair may be used in entrance rooms of apartments for putting on or lacing shoes, as well as for serving as piece of furniture in vans, cabin of mobile radar etc. EFFECT: simplified and compact construction and manufacture, convenient use and enhanced reliability in operation. 4 cl, 4 dwg

Description

 The wall-mounted chair with a folding seat is intended for use as a household item in the hallways of apartments (for putting on and lacing shoes), as well as for use as a piece of furniture in motor vans, cabins of mobile radar stations, etc.

 Known wall folding chairs (Europatent 0329483; German patent 2343566; US patents 3850476, 4270794), the seats of which are rotated on a horizontal axis or pins. Similar essential features of these analogues are the presence of a backrest attached to the wall (or other vertical plane), a folding seat, hinged knots for turning the seat, spring elements that hold the seat in an upright position. In the working position, the seat rests on the hinge nodes (horizontal axis, pins), and the back of the seat is held by the back. The spring elements are made in the form of spiral springs worn on the axis of rotation of the seat (German patent 2263706; US patent 4270794), or coil springs, the axis of which coincides with the axis of rotation of the seat (Japanese patent 08003101).

 The described analogues have common disadvantages for them. The first drawback is that in the working position, a large tipping moment from the weight of the person sitting on the chair (inevitable with a small distance between the seat support point and the back of the chair holding the back of the seat) is entirely perceived by the hinged nodes, forcing them to be powerful and heavy. The second disadvantage is that the spring elements in the form of spiral springs, worn on the axis of rotation of the seat, constantly return the seat to a vertical position, which makes it uncomfortable to use such a chair. Spring elements in the form of cylindrical springs, according to the description of the Japanese patent, are free from this drawback, however, hinge mechanisms with such springs are complex in design and manufacture.

 The closest analogue, taken as a prototype of the invention, is a wall folding chair described in Europatent 0614634, class. A 47 C 9/06, 1994.

 The essential features of the prototype, which coincide with the essential features of the claimed solution, are the presence of a backrest attached to the wall (or other vertical plane) with side walls protruding forward in its lower part, a folding seat, the back of which in the working position abuts against the back, and the element holding the seat upright.

 The prototype has the above disadvantages of analogues.

 The aim of the invention is to eliminate the disadvantages of the prototype while ensuring simplicity and reliability of the design with small dimensions when folded.

 The specified technical result is achieved due to the fact that in the known prototype containing a backrest with side walls, a folding seat and a spring element, a support block is installed between the lower parts of the side walls that protrude forward. The hinged seat is connected to the back with the help of hinges fixed on the side walls and in the working position lies on the support bar, pressing its back part from the bottom to the back. The spring element is installed in the cavity formed by the side walls and the support bar, so that the axis of the spring is offset from the axis of rotation of the seat.

Figure 1 shows a cross section of a chair in a working position;
figure 2 is the same in the folded position;
figure 3 - spring element;
figure 4 - node I in figure 1.

 The wall chair consists of a back 1, side walls 2, between which a support block 3 is fixed, a folding seat 4 connected to the back by hinges 5, a spring element 6 installed in the cavity formed by the side walls 2 and the support bar 3 (Fig. 1 and Fig. .2). The spring element 6 consists of a coil spring 7, worn on the rod 8, mounted in the bracket of the base 9 (figure 3). The axis of the rod 8, on which the spring 7 is worn, is offset relative to the axis of the hinges 5. One end of the spring 7 is fixed to the base 9, and the other (long) end 10 is pressed against the rear of the seat 4 (figure 4).

 The spring element can be made in the form of a leaf spring, one end of which is fixed on the support bar in the cavity formed by the side walls 2 and the support bar 3, and the other end is pressed against the rear of the seat 4.

 In the working position, the seat 4 lies on the support bar 3, passing through it to the back 1 all the load from the weight of the seated person. In this case, the back of the seat 4 rests against the back of the bottom 1. The end of the spring is pressed against the beveled rear end of the seat 4, without preventing the seat from being held in a horizontal position under the influence of gravitational forces. When the seat 4 is rotated from the worker to a vertical position, the upper edge of the beveled rear end of the seat slides along the end of the spring. After passing through the intermediate position, the end of the spring begins to put pressure on the upper surface of the rear of the seat 4, creating an effort to rotate the seat into a vertical position and hold it in this position (figure 4).

 The wall-mounted chair with a folding seat is small-sized, simple in design, not difficult to manufacture, convenient and reliable in operation.

Claims (4)

 1. Wall chair with a folding seat, comprising a back with a side wall attached to a wall or other vertical plane, a folding seat pivotally connected to the back, the back of which in the working position rests against the back from the bottom, and an element that holds the seat in an upright position, characterized in that between the protruding lower parts of the side walls of the backrest, a support block is mounted on which the seat rests in the working position, and the element that holds the seat in the upright position is spring-loaded offset relative to the axis of rotation seat, with one end of the spring element is pressed against the back of the seat.  2. The chair according to claim 1, characterized in that the spring element is installed in the cavity formed by the side walls of the back and the support bar, and consists of a base, a rod fixed to it, on which a spiral spring is mounted, one end of which is fixed to the base, and the other end is pressed against the back of the seat.  3. The chair according to claim 1, characterized in that the spring element is installed in the cavity formed by the side walls of the back and the support bar, and consists of a leaf spring, one end of which is fixed to the support bar, and the other end is pressed against the back of the seat.  4. The chair according to any one of paragraphs. 2-3, characterized in that the rear end of the folding seat has a bevel.

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