SU1433467A1 - Convertible sofa - Google Patents

Abstract

The invention relates to furniture production and can be used in the manufacture of sofa beds, transformable in three positions. The purpose of the invention is to expand the operational capabilities due to the additional position of the sofa with an increased working surface. The two levers 22, 25 of the transformation mechanism are pivotally interconnected. During the transformation, the finger 21 moves in the slot 23 of the lever 22, and the finger 17 moves in the slot 11 of the plate 10. When transformed into a large sofa, the frame 14 of the seat moves to the right. The stop 18 passes through the protrusion 12 of the plate 10. The finger 17 occupies the extreme right position. When transformed into the bed position, push the carriage 7 further to the right. The axle 13 of the carriage does not have a lower end of the lever 22. The backrest 20, when moving the finger 21 in the slot 23, turns around the axis 3 and will be placed along the seat 15. 8 Il.

Description

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 09 00 NU ОЬ The invention relates to mebb: flax production and can be used in the manufacture of sofa beds, transformable in three positions.

The aim of the invention is to expand the operational capabilities due to the additional position of the sofa with an increased working surface,

Fig. I is a sofa bed, side view, in the sofa position, without sidewall, the seat frame is in the rearmost position; figure 2 - the backbone of the seat, vyshchivny in the most forward position; n | 1 fig 3; a sofa bed in the bed position; in fig 4, the same in the start position of the transformation from the bed to the sofa position and at the end of the transformation from the sofa to the bed position; Fig.5 - the same, in the position of the Bed, top view / in Fig, 6 - an elongated process of a lever with a slot; Fig, 7 - spring-loaded node sofa bed, an option; Fig 8 - Scheme of operation of the transformation mechanism.

Sofa bed designs are next.

A stop 2, axles 3, 4, a guide 5 and a turret 6 are mounted on the housing 1. In the housing there is a trolley 7 movable on wheels 8, 9, of which the wheel 8 moves along the rail 5. On the trolley 7 a plate 10 is fixed which has a longitudinal slot 11 and a protrusion 12 facing upwards in the lower part, an axis 13 is fixed on the left. On the carriage 7, the frame 14 of the seat with a soft element 15 is mounted for movement, in front of which there is a bottom. the grip 16 is fixed, and in the back part is the finger 17, which interacts with the walls of the slot 11, and the stop 18, which interacts with the protrusion 12. Above the seat 15 in the sofa position is the backrest frame 19 with a soft element 20. The backrest frame 19 is installed pivotally on axis 3, has a finger 21 fixed in its middle part, and is connected to the carriage 7 by means of a lever 22. The long arm of the lever 22 has a transverse section with a curvilinear slot 23 in which the finger 21 is movably located. The lower end of the lever 22 is mounted on axles 13 of the trolley 7. Lever 22 pycrnir 24 is connected with its upper part with the auxiliary lever 25 mounted on the axis 4 of the housing 1. The finger 17 and the stop 18 are rigidly fixed to the frame 14 by means of the bracket 26. The lever 22 is connected with the middle part of the carriage 7 by its middle part 27 by spring 27 its lower part is connected with the upper rear part of the body 1 by a spring 28; Details of the transformation mechanism are located on two sides of the sofa bed.

Instead of springs 27, 28 a spring 28 can be installed (FIG. 7), and the backrest 20 can be of any other shape and size.

Sofa bed is as follows.

/ From position Small sofa The sofa bed is shifted to the Large sofa position. They take the grip 16, slightly raise the frame 14 of the seat and move it to the right along the arrow in FIG. In this case, the frame 14 is rotated counterclockwise with its finger 17, moves to the right, the stop 18 passes over the protrusion 12, the finger 17 takes the rightmost position in the slot 11, the stop 18 enters the protrusion 12, the gripper 16 is free. Thus obtained a large sofa presented in figure 2. When converting a small sofa to a large spring 27, 28, it is unclenched (tensioned). The finger 17 is moved to the extreme right position of the slot 11,

When turning a large sofa into a bed, move cart 7 further to the right. At this time, the finger 17, being in the slot 11 in the extreme right j position, forces the carriage 7 to the right, which with its axis 13 t does not have the lower end of the lever 22 to the right, and the back 20 with the help of finger 21 and slot 23 rotates around axis 3 clockwise. The finger 21 describes the arc 29, the lever 25 (hinge 24) - the arc 30, and the intersection point of the axial lines of the slot 23 and the lever 22 - the arc 31. The lever 25 holds the frame 19 with the back 20, which smoothly sets its flat surface at the seat 15. A gap is formed between the backrest 20 and the seat 15 (Fig. 4). To eliminate tearing, lift the seat frame 14 slightly.

for gripping the 16 to exit the stop 18 above the protrusion 12 and move it to the left until the backrest 20 is closed with the seat 15, (FIG. 3).

When turning the bed into a sofa, slightly raise the frame 14 by the grip 16 and move it to the right until the stop 18 leaves the ledge 12 and lower it. In this position, the frame 14 is moved to the left to the position of the Large sofa (Figure 2), if necessary, to form

 the small sofa needs to again raise the frame 14, catch the grip 16 and move it all the way to the left, i.e. as far as the stop 2, and lower the frame 14. In the Small Sofa and Large Sofa positions, wheel 9 is always in the shoe 6. The frame 14 rises easily and not above the hands of a standing person. The springs 27 and 28 are always in a stressed state, with the maximum stress being created in the Bed position. The mechanism allows the sofa bed to be moved from the Small Sofa position to the Bed position and back again. The size, position and direction of the slits are determined by drawing the kinematic scheme.

Claims (1)

Invention Formula A sofa bed containing a trolley placed in the housing with a fixed seat back, a backrest frame with a soft element, set to five about 5 0 five rotatable around the horizontal axis when the sofa bed is transformed into the Bed position, and a transformation mechanism that includes two spring-loaded arms connected to one end at one end, one of which is pivotally mounted on the body with a free end, and the other has an elongated process, and a bogging element for pushing the carriage, characterized in that, in order to expand the operational possibilities due to the additional position of the sofa bed with an increased working surface, An anism of sofa bed transformation is provided with two guide fingers, one of which is fixed on the backrest frame, and the other, oh, on the seat frame, with an abutment fixed to the seat frame and fixed on the trolley with a plate with a longitudinal slit and protrusion on the end from the lengthening arm of the lever is placed on the back and has a transverse section with a longitudinal curved slot at the end, and during the transformation of the sofa bed, the finger fixed on the backrest frame interacts with With the notches in the transverse section of the lever, the finger fixed on the seat frame interacts with the walls of the slot in the plate, and the support fixed on the seat frame with the plate protrusion. sixteen FIG. g Fig.Z / FIG. five 2S FIG. 6 Sfus. 7 21 at 9i, g. 8