A piece of furniture with an oblique seat with mechanism for horizontal unfolding of a triple mattress including a headrest

Abstract

 A piece of furniture with an oblique seat with mechanism for horizontal unfolding of a triple mattress, according to the invention comprises a body (1), three-part matrress (2), (3), (4), a backrest (20), to a body a mechanism for unfolding matrresses is affixed. Mechanism for unfolding mattresses comprises a horizontal slat (8) with arms (13), (14), (15) to which levers (12), (11) are mounted hingedly, to which angular slats (7), (6), with affixed matrresses (4), (3), are mounted hingedly. Mattress of a headrest (2) has a lenght no more than 440 mm and thickness smaller than half of thickness of the rest of mattresses and it is affixed to a lower angular slat (5), which is joined hingedly with levers (10) and (9) which, with second ends joined hingedly with arms (15) and (14) of a horisontal slat (8) and a lever (10) is joined additionally hingedly with a back lever (11) by means of a short flat bar (16).

Description

[0001] This invention relates to a piece of furniture with oblique seat with mechanism for horizontal unfolding of a triple mattress including a headrest, which is used in furniture making industry.

[0002] It is known from Polish description of utility model W.119996 "A piece of furniture with a lever for displacement with raising of a horizontal seat ", which comprises a body with two seats joined with two levers left and right. The lever comprises upper angle bar (2) and lower angle bar (1), which are affixed to upper seat (10) and lower seat (9), upper angle bar (2) is joined hingedly with horizontal slat (3) by means of front lever (8) and back lever (5), which simultaneously are joined hingedly with a lower angular slat (1), horizontal slat (3) is joined with a front lever (8) by a coil spring, left and right levers are joined by a synchronizer.

[0003] It is also known from Polish utility model W.121965 "Sofa with mechanism for unfolding of triple mattress perpendicularly to adjustable backrest". Sofa comprises a body (1), three part mattress (2), (3), (4) with a support (18), a backrest (5), to the body mechanism for unfolding mattresses and mechanism of adjustable backrest are attached. Mechanism for unfolding mattresses comprises a horizontal slat (6) to which levers (8) and (9) are mounted hingedly to which angular slats (10), (11), (12) with affixed mattresses are mounted hingedly. Horizontal slat (6) is supplied with a lower arm (13) to which assistance spring (14) is mounted with its second end joined with a plate (15), self-aligningly joined with a back lever (8).

[0004] The aim of the invention is working out of such a construction of a piece of furniture, which will ensure higher comfort of use while using it for sitting and also for turning it into a bed for lying and longitudinal sleeping.

[0005] Nature of the invention is characterised by that, the piece of furniture comprises a body with mounted three part mattress and adjustable backrest, mechanism for unfolding a triple mattress and mechanism for adjusting a backrest, moreover mechanism for unfolding a triple matress comprises a horizontal slat with upper vertical arm and with three lower arms, upper angular slat, middleangular slat and lower angular slat, which are affixed to upper mattress, middle mattress and mattress of a headrest, to the front end of a horizontal slat a front lever is mounted hingedly, with its second end it is joined with upper angular slat in its middle part, moreover front lever has a shape approximating a letter "F" upside down with a middle protrusion joined hingedly with front end of middle, angular slat. Back lever in a shape aproximating letter "C" with obtuse arms, with its lower end it is joined hingedly with horizontal slat, in middle part it is joined with middle angular slat and its upper end is joined hingedly with the end of a front angular slat. Mattress of a headrest with smaller lenght and thickness affixed to a lower angular slat is driven by a mechanism made up of two levers of a shape of stright, flat bars which the front lever is joined hingedly with its low end with the end of front vertical protrusion of horizontal slat, upper end is joined hingedly with a low angular slat and on 1/3 of lenght it is joined hingedly by a short flat bar with a lever in a shape of a letter "C". Second straight lever, with its one end is joined hingedly with a middle arm of a horizontal slat and with its second end it is joined hingedly with a back, angular slat.

[0006] A piece of furniture is shown on the drawing on which fig.1 presents a piece of furniture unfolded in a side view, fig.2 presents a piece of furniture in a transitional position in a side view, fig.3 presents a piece of furniture in a folded position in a side view.

[0007] A furniture according the invention comprises a body 1, a three-part mattress 2, 3, 4 , a backrest 20. To the body horizontal slats 8, left and right are affixed.

[0008] Mechanism for unfolding mattresses comprises a horizontal slat 8 affixed to a body 1 to which levers, front 12 , back 11 are affixed hingedly, to which angular slats 7, 6 are affixed hignedly, to which mattresses 4 , 3 are affxed. A horizontal slat 8 has a shape of a flat bar with arms joined stably, upper, vertical 21 and three lower vertical arms 15, 14 and 13. A backrest 20 is joined with a body 1 by means of an adjustable mechanism of a back rest, which is described, claimed in an application W.129865. Mattress of a headrest 2 with smaller lenght and thickness has an angular slat 5 affixed, to which levers 10 and 9 in a shape of straight flat bars are affixed hingedly, which with second ends are joined hingedly with lower vertical protrusions, 15, and 14 , and a lever 10 is joined hingedly by a short flat bar 16 with a back lever 11 on its bend. To a lower arm 13 a spring is attached, with is its second end it is joined with an arm 18 of a lever 12. An arm 18 of a lever 12, right and left are joined by a synchronizer 22.

Claims

1. A piece of furniture with an oblique seat with mechanism for horizontal unfolding of a triple mattress, having a body, a triple mattress, adjustable backrest with a mechanism, mechanism for unfolding mattresses, characterised in that a mechanism for unfolding a triple mattress comprises a horizontal slot (8) equiped with upper arm (21) and three lower arms (13, 14, 15), to horizontal slot (8), a front lever (12), and back lever (11) are fastened hingedly, to which angular slats , upper (7) and middle (6) are fixed hingedly, to which mattresses (4, 3) are fastened, mechanism is aided with a coil spring fastened to an arm (13) of a horizontal slat (8) and an arm (18) of a front lever (12), and a mattress of a headrest (2) is fastened to a lower angular slot (5), which is joined hingedly with an arm (14) by a lever (9) and by a lever (10) with an arm (15) of a horizontal slat (8), and a lever (10) is joined hingedly by means of short flat bar (16) with a back lever (11).

2. A piece of furniture according to claim 1, characterised in that a front lever (12) has a shape of a flat bar approximating a letter (F) upside - down.

3. A piece of furniture according to claim 1, characterised in that a back lever (11) has a shape of a flat bar aproximating to a clamp with obtuse arms with lower arm with doubble bend.

4. A piece of furniture according to claim 1, characterised in that to the arm (13) of a horizontal slat (8) a coil aiding spring is attached, with its second ending joined with a pin attached to an arm (18) of a front lever (12).

5. A piece of furniture according to claim 1, characterised in that the mattress of an headrest (2) has thickness smaller than half of thickness of the rest of mattresses.

6. A piece of furniture according to claim 1, characterised in that in folded position, a seat is situated obliquely.

7. A piece of furniture according to claim 1, characterised in that in an unfolded position mattresses are placed horizontally.

Drawing