RU158725U1 - FURNITURE ITEM AND BACK PILLOW LIFTING MECHANISM - Google Patents

Abstract

A piece of furniture and a backrest cushion lifting mechanism comprising a supporting structure, seat, backrest, backrest cushion lifting mechanism, characterized in that the backrest cushion lifting mechanism is made in the form of telescopic rails, the fixed parts of which are interconnected by a plate and hinged to a lower base rigidly fixed with a back, and movable guides are interconnected by a traverse and pivotally with the upper base rigidly fixed to the pillow.

Description

The utility model relates to furniture, and may find application in transformable sofa beds, armchairs, beds and / or furniture with adjustable backrest height.

A known piece of furniture containing a base, sidewalls with soft armrests, a back with a cavity, a transformation mechanism with two sections and a head restraint, a soft mattress, a wall cushion and a seat cushion, while the back cushion lifting mechanism consists of a support element in the form of a fork rigidly fixed to the frame base of the back cushion, the connecting rod, the axis of which is fixed on the front of the back, and equipped with a finger that engages with the fork, and a coil spring, which is fixed at one end on the connecting rod finger and the other at the fork (see. IPC A47C 17/13, the description of the patent of the Russian Federation №2158102, publ. 27.10.2000).

The disadvantages of the known design are:

- rigid connection of the backrest cushion lifting mechanism;

- unreliability due to the possibility of a connecting rod when moving;

- low performance, due to the need to apply a sufficiently large force to lower the pillows.

Closest to the claimed utility model is a piece of furniture containing a supporting structure, a backrest, a mechanism for raising the back cushion, including a supporting element, a spring and a connecting rod, and further comprising a housing articulated with a supporting element made in the form of a rocker mounted in the upper part housing and pivotally connected to it by the axis on which the plate is located, one end mounted on the housing, and the other on the beam, pivotally connected to the connecting rod, made in the form of four hugolnoy plates with holes for fastening the seat cushion (see IPC A47C 17/13, utility model patent №92311 of the Russian Federation, published on 20.03.2010, the..) - the closest analogue.

Low operational reliability due to the presence of a spring, having a limited service life, which is determined by the number of cycles when folding and decomposing the pillows and backs.

The technical result of the claimed utility model is to increase the operational reliability of the work.

The essence of the technical solution lies in the fact that in the piece of furniture and the mechanism for lifting the back cushion containing the supporting structure, seat, back, mechanism for raising the back cushion, mechanism for raising the back cushion, it is made in the form of telescopic guides, the fixed parts of which are interconnected by a plate and articulated with the lower base rigidly fixed to the back, and the movable guides are interconnected by a traverse and pivotally with the upper base rigidly fixed to the pillow.

The implementation of the mechanism for lifting the pillow in the form of telescopic guides, the fixed parts of which are connected by a plate and pivotally with a lower base rigidly fixed to the back, and the connection of the movable guides between each other by a traverse and pivotally with the upper base rigidly fixed with the pillow provide a small effort to lift and lowering the cushion, which increases the operational reliability of the work as a whole by eliminating the breakdown of the constituent mechanism for raising the back cushion.

The inventive utility model is illustrated by drawings, where in FIG. 1 shows a piece of furniture with a raised pillow and a lifting mechanism; in FIG. 2 - a piece of furniture with an intermediate position of the pillow and a lifting mechanism; in FIG. 3 - a piece of furniture with a folded pillow and a lifting mechanism; in FIG. 4 shows the lifting mechanism when the cushion is in FIG. 1 and FIG. 3; in FIG. 5 - lifting mechanism with the position of the pillow in FIG. 2. The piece of furniture contains the supporting structure 1, the back 2, the seat 3, the lifting mechanism 4 pillows 5.

The lifting mechanism (see Fig. 3) consists of telescopic rails, the fixed 6, 7 parts of which are interconnected by a plate 8 and by means of rivets 9, 10 pivotally with the lower base 11, fixed with rivets (not shown) with the back 2 and the movable guides 12, 13 are interconnected by a traverse 14 and by means of rivets 15, 16 pivotally with the upper base 18, fixed by means of rivets (not shown) to the pillow 5.

The lifting mechanism 4 pillows 5 works as follows. A hand force is applied to the pillow 5, which puts the pillow in the position shown in FIG. 2 or FIG. 3. Moreover, due to the fact that the stationary 6 and 7 parts of the telescopic guides are connected to the rivets 9 and 10 pivotally with the base 11, and the movable 12 and 13 guides are connected with rivets 15 and 16 pivotally to the upper base 18, the lifting mechanism 4 is rotated, and with it, and pillows 5 in a folded position.

Compared with known devices, this design has several advantages:

- simplicity in manufacturing;

- high operational reliability due to the presence of telescopic rails;

- high performance, due to the need for small efforts to raise and lower the pillows;

- additional degrees of freedom due to articulated joints;

Claims (1)

A piece of furniture and a backrest cushion lifting mechanism comprising a supporting structure, seat, backrest, backrest cushion lifting mechanism, characterized in that the backrest cushion lifting mechanism is made in the form of telescopic rails, the fixed parts of which are interconnected by a plate and hinged to the lower base, rigidly fixed with a back, and movable guides are interconnected by a traverse and pivotally with the upper base, rigidly fixed to the pillow.

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