RU194951U1 - Combined backrest unit - Google Patents

Abstract

The utility model relates to structural elements of seats for compartment and reserved seats railway cars, specialized cars (mobile homes, mobile workshops and laboratories for various purposes), in particular to back supports built into the back of a sofa (benches, etc.) with the possibility of their transformations to convert a berth to a seat. The combined unit of the back of the sofa of the vehicle, containing the basis of the back - the wall of the vehicle and a sliding section. The retractable section is made with the possibility of extension with its entire volume and the ability to adjust the retractable section to the physique of a particular person. The mechanism for extending the section is a lever with hinges that together ensure circular movement of the section in the horizontal plane. 2 s.p. f-ly, 11 ill.

Description

The utility model relates to structural elements of seats for compartment and reserved seats railway cars, specialized cars (mobile homes, mobile workshops and laboratories for various purposes), in particular to back supports built into the back of a sofa (benches, etc.) with the possibility of their transformations to convert a berth to a seat.

Known designs of the backs of seats (sofas) of compartment and reserved seats wagons, including retractable sections that allow you to convert a berth into a chair. These include, for example, “The backrest with armrests for the seat and the sleeping shelf of a rail vehicle” (DD229655A1), comprising a backrest frame, a section connected with the upper end to the backrest frame with the possibility of rotation in the vertical plane, and the lower end with a rotary lead through the guide the groove of the section and the horizontal axis mounted in the frame supports, on which the armrests are unilaterally fixed, having the ability to support the stops of the lower part of the section that is advanced forward.

A disadvantage of the known design is the extension of the section exclusively by rotation around a fixed axis. As a result, such a device is limited by the function of adjusting the formed chair for a specific person, first of all, by the growth indicator, namely, the ability to adjust the depth of the seat and, in combination with the depth of the seat, tilt the retractable section is limited.

As a prototype, a slightly more advanced combined unit of the back of the sofa (RU2109648C1) is selected, comprising a back frame, a section connected with its upper end to the back frame with the possibility of rotation in the vertical plane, and the lower end with a rotary leash through the section cutting guide, and installed in the supports the horizontal axis, on which the armrests are unilaterally fixed, having the ability to support the stops of the lower part of the section that is advanced forward, while there is a decree between the armrest and the section naya frame support under the horizontal axis on which one-sidedly fixed leash and armrests have the ability to lock in the retracted position.

The prototype and the analogue have the same disadvantages indicated above.

The technical problem that the utility model is aimed at eliminating is the low possibility of adjusting the retractable section for the physique of a particular person.

The indicated technical problem is solved by the combined unit of the back of the sofa containing the backrest base (frame) and a sliding section, in which, according to the proposal, the sliding section is made with the possibility of extension with its entire volume.

The retractable section can be made to rotate in a vertical plane to provide more convenient support on it with the back of a seated person.

The sliding section is made with the possibility of fixing in various intermediate positions (extension depth, angle of inclination).

The utility model is illustrated by drawings.

In FIG. 1 to 3 show the disadvantages of sofas, benches, etc. without pull-out section.

In FIG. 4 conventionally shows the position of a seated with extended movable section.

In FIG. 5 conventionally shows the placement of a lying person with the movable section removed.

In FIG. 6 shows an example of installing one pull-out section along the length of one berth.

In FIG. 7 shows an example of installing two drawer sections along the length of one berth.

In FIG. 8 to 11 show examples of the implementation of extension mechanisms and, accordingly, the placement of a seated person.

The combined unit of the back of the sofa (seat, bench, shelf, locker) 1, contains the base of the back 2 and the pull-out section 3. The block also contains a pull-out mechanism 4. Various latches, stops, locks, etc. any known design is assumed, adapted to the appropriate extension mechanism 4 and the design features of the backrest 2, section 3 and the combined unit as a whole. Not shown in the drawings.

Often lockers or sleeping shelves 1 have such a width (more than 600 mm), which provides the necessary space for a lying person, but does not provide comfort for a sitting person. Passenger seats, as a rule, have a depth of 400 to 550 mm, with this depth the average person can lean on the back of the seat and place their feet on the floor. If the depth of the seat 1 is more than 550 mm, then the seated person will either put his feet on the floor without resting his back on the back (Fig. 1), or, to lean on the back, will be forced to assume a reclining position (Fig. 2), or lean on the back, but without the ability to bend the leg at the knee joint and place the feet on the floor (Fig. 3). On a narrow sleeping shelf (locker) 1 passenger will sit comfortably, but he will not have enough space to lie.

The utility model allows you to install the retractable section 3 in at least two positions: “pressed against the wall” or “extended” (Fig. 4). In the position pressed against the wall, section 3 allows you to comfortably accommodate a lying person (Fig. 5).

Between the extreme positions (“pressed against the wall” or “pushed”) can be intermediate - for tincture under the growth of a seated person (several people). The surface of section 3, facing the back of a seated person, may have a slope to the wall (base 2) on which it is mounted. Also, the tilt can be adjustable. The retractable section 3 can be integral (Fig. 6) and divided into several parts, for example, into two parts on opposite sides of a window mounted in the wall along which bench 1 is placed (Fig. 7).

The extension mechanism 4 sections 3 is a lever with hinges, together providing a circular movement of section 3 in the horizontal plane. Fixation in the required position is done manually. In FIG. 8, 9, mechanism 4 is shown having only two extreme positions.

As an implementation option, the lever may be telescopic; Fixation in the required position is done manually. In FIG. 10, 11, mechanism 4 is shown having only two extreme positions.

Claims (3)

1. The combined unit of the back of the vehicle’s sofa, containing the back of the vehicle - the wall of the vehicle and a retractable section, characterized in that the retractable section is designed to extend all its volume and the ability to adjust the retractable section to the physique of a particular person, while the extension mechanism of the section is a lever with hinges that together ensure the circular movement of the section in the horizontal plane. 2. The combined unit of the back of the sofa according to claim 1, characterized in that the pull-out section is rotatable in a vertical plane. 3. The combined unit of the back of the sofa according to claim 1, characterized in that the pull-out section is made with the possibility of fixing in various positions.

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