A UNIT FOR THE CHANGE OF BACKREST AND FOOTREST POSITION OF A LEISURE FURNITURE

Description

[0001] The subject of the invention is a leisure furniture with a backrest and footrest with a unit in the form of a footrest attachment mechanism and a backrest attachment mechanism in order to change the relative position of the footrest and backrest compared to the seat, in accordance with the user's requirements.

[0002] In the US 2016/0073785 patent description a solution was presented, in which the footrest moves on a scissor support mechanism and has no kinematic connection with the backrest mounting mechanism.

[0003] It is known from American patent application No. US 4 423 903 A a handle operated incliner chair which he has a combined seat and backrest member moveable from a normal occupant sitting position to an occupant inclining position by means of a mechanism attached to a stationary chair frame, by an occupant-operable handle. The handle causes a rotary element connecting identical mechanisms on either side of the chair to actuate linkages that simultaneously thrust out a footrest member and pull down and forward the rear of the seat part with its attached back while thrusting up and forward the front of the seat. A two link control assembly is provided to control and guide the back from moving backward from its normal position to the inclined position and comprise a control link attached intermediate its length to a toggle plate which is itself pivotably connected to the chair frame upwardly and rearwardly of the axis of the rotary element. The toggle plate is pivotably attached to a primary thrust lever at a point allowing the back control lever to be pivoted intermediate it and the toggle frame pivot point. One end of the back control link is attached to the rear of the seat bottom and the other end is attached to a guide link which is in turn attached to the chair frame, and is the second link in the control assembly.

[0004] In the PL 405547 patent filing a convertible armchair was presented with an independent backrest, unfolding to three positions, activated by pressing on the armrest, whereas the backrest adjustment is independent from the unfolding mechanisms. The armchair is characterised by the longitudinal seat bars, mounted on transverse bars, having in their rear zones arms for the mounting of the backrest arms, whereas the lower arms of the levers are connected by a crossbar, and in the front zone having a symmetric scissor mechanism for the movement of the footrest, whereas the scissor elements are connected by a crossbar, and actuator cylinders being placed between the crossbars and/or transverse bars and crossbars.

[0005] A furniture for sitting presented in the Polish description PL 174683 is known, transforming into a furniture for lying down, with a protracting part with a furniture padding for the placement of legs, which is placed below the part for sitting, and a mechanism slides out, with the raising hardware fixed to the sides of the part sliding out, using which the furniture padding is raised to the level equal to the height of the seat level, and each raising hardware has in the slid out position of the part for lying down on the part on the opposite side of the part for sitting down a directing arm, which is attached in an articulated manner both to the frame part of the furniture padding and to the side girder assigned to it, whereas the opposite side of the raising hardware is equipped with a directing connector attached in an articulated manner both to the connecting arm connected with the frame part and to the side girder. Theoretical articulation points of each of the directing connectors in the area of the connection with the connecting arm and side girder are located in the direction of the part for sitting, on the outside of the surface of a horizontal projection of the part for lying down, and the points of rotation of the directing connector and directing lever are placed above the upper edge of their assigned side girder, and the connecting arm is bent away with its free end side towards the part for sitting. This solution enables assuming a semi-reclined position and requires significant strength.

[0006] The goal of the solution according to the invention is a construction of a mechanism, which will reduce the strength required to slide out the footrest, which may be particularly important for elderly persons.

[0007] The essence of the solution, which is a leisure furniture with a backrest and footrest with a unit in the form of a footrest attachment mechanism and a backrest attachment mechanism for the change of the position of the backrest and the footrest, lies in the fact that the footrest attachment mechanism has two pantograph mechanisms, each in the form of a pantograph lower arm and a pantograph upper arm, to which, at their front edges a footrest bases of the furniture are attached in a rotating manner, and the pantograph lower arm at the opposite edge is attached in a rotating manner to a pantograph front connector, which in its centre zone is attached in a rotating manner to the pantograph upper arm, and in its end zone to a pantograph support mounted in the leisure furniture frame, to which also a pantograph rear connector is mounted, connected in the centre zone in a rotating manner with the end of the pantograph lower arm, whereas in the end zone the pantograph rear connector has a rotationally mounted a footrest rear arm for the connection with the second pantograph rear connector, whereas the pantograph lower arms of both pantographs are connected in their centre zones with a footrest front arm, moreover the footrest rear arm is connected by a pull rod attached in a rotating manner to the edge of a backrest attachment mechanism arm, mounted in a rotating manner approximately in the middle zone at a base plate support of the backrest attachment mechanism, whereas from the second edge to an axis embedded in the supports of the base plate of the backrest mounting support mechanism, whereas the supports have a backrest arm placed on the axis, connected with the backrest support axis.

[0008] It is advantageous when to the plate support an electric actuator is attached on an axis, with a controller, with the opposite end attached to the axis placed on the pull rod.

[0009] This unit structure enables the construction of a furniture which enables changing the position of the sitting person to a semi-reclined without having to stand up, which is particularly useful for elderly persons and persons with disabilities. Moreover significant strength is not required to change the position of the unit. It is possible to retract the backrest by approx. 320 mm and simultaneously change the backrest inclination by 6-8°. The structure is light and not visible when the footrest is folded.

[0010] The subject of the invention, in an example, but not limiting, implementation was presented on the figure, where on fig. 1 the unit for extending the footrest is presented in a perspective view, fig. 2 presents the unit for extending the footrest in a side view, in a position with the footrest not extended, fig. 3 presents the unit for extending the footrest in a side view, in a position with the footrest in an intermediate extension position, fig. 4 presents the unit for extending the footrest in a side view, in a position with the footrest fully extended, whereas on fig. 5 the unit was presented in a version with an electrical actuator, fig. 6 presents the leisure furniture in a cross section in a folded position, fig. 7 presents the leisure furniture in a cross section in an intermediate position, and fig. 8 presents the leisure furniture in a cross section in an unfolded position.

[0011] A leisure furniture with a backrest and footrest with a unit in the form of a footrest attachment mechanism and a backrest attachment mechanism for the change of the position of the backrest and the footrest, where the footrest attachment mechanism has two pantograph mechanisms, each in the form of a pantograph lower arm 1 and pantograph upper arm 2, to which, at their front edges the footrest bases 3 of the furniture are attached in a rotating manner. The pantograph lower arm 1 at the opposite edge is attached in a rotating manner to the pantograph front connector 4, which in its centre zone is attached in a rotating manner to the pantograph upper arm 2, and in its end zone to a pantograph support 5 mounted in the leisure furniture frame, to which also the pantograph rear connector 6 is mounted, connected in the centre zone in a rotating manner with the end of the pantograph upper arm 2. In the end zone the pantograph rear connector 6 has a rotationally mounted footrest rear arm 7 for the connection with the second pantograph connector 6, whereas the lower arms 1 of both pantographs are connected in their centre zones with the footrest front arm 8. Moreover the footrest rear arm 7 is connected by a pull rod 9 attached in a rotating manner to the edge of the backrest attachment mechanism arm 10, mounted in a rotating manner approximately in the middle zone at the base plate 12 backrest attachment mechanism support 11, whereas from the second edge to an axis 13 embedded in the supports 14 of the base plate 15 of the backrest mounting support mechanism. The supports 14 have a backrest arm 17 placed on the axis 16, connected with the support 11 axis 18.

[0012] There are version where to a plate support 19, 23 is connected by a screw with the base of the backrest mechanism base 12, mounted on the axis 20 the electric actuator 21 with a controller not shown on the figure, with the opposite end attached to the axis 22 placed on the pull rod 9.

[0013] On the figure the footrest mounted to the base 3 was not shown, nor the backrest mounted to the plate 15.

[0014] In the first position, where the furniture has a closed footrest, the backrest is in the most vertical position. After taking a position on the leisure furniture, advantageously a sofa, by slightly raising the backrest and exerting stronger pressure it is possible to move the backrest support mechanism by approx. 32 cm. The backrest will tilt backwards by an angle of 6-8°, there will be a relative movement of the arm 17 in relation to the axis 18 and the tilting of the plate 15. This will result in the rotation of the arm 10 in relation to the support 11 axis 18a and movement of its lower edge forwards. This movement will result in the movement of the pull rod 9 forwards and the movement of the rear arm 7 forwards. The layout of the pantographs will result in the supports 3 of the footrest will be placed in a position that is approximately horizontal and approximately parallel to the plane of the seat of the leisure furniture.

[0015] Folding the mechanism to its original position is conducted by increasing the pressure on the footrest and bringing it to an approximately vertical position. The pantograph system will then move the pull rod 9 backwards, resulting in the rotation of the arm 10 around the support 11 axis 18a and movement of the plate 15 to an approximately horizontal position, while bringing the backrest to a vertical position and moving it forward.

[0016] In the version with the electrical actuator 21, it is activated by a controller and moves the pull rod 9 forwards, moving the footrest forwards and inclining the backrest and moving it backwards, or from this position moves the pull rod 9 backwards, bringing the backrest to a vertical position and moving it forward in the manner described above while lowering the footrest.

Claims

1. A leisure furniture with a backrest and footrest with a unit in the form of a footrest attachment mechanism and a backrest attachment mechanism for the change of the position of the backrest and the footrest, characterized in that the footrest attachment mechanism has two pantograph mechanisms, each in the form of a pantograph lower arm (1) and a pantograph upper arm (2), to which, at their front edges footrest bases (3) of the furniture are attached in a rotating manner, and the pantograph lower arm (1) at the opposite edge is attached in a rotating manner to a pantograph front connector(4), which in its centre zone is attached in a rotating manner to the pantograph upper arm (2), and in its end zone to a pantograph support (5) mounted in the leisure furniture frame, to which also a pantograph rear connector (6), connected in the centre zone in a rotating manner with the end of the pantograph lower arm (1), whereas in the end zone the pantograph rear connector (6) has a rotationally mounted a footrest rear arm (7) for the connection with the second pantograph rear connector (6), whereas the pantograph lower arms (1) of both pantographs are connected in their centre zones with a footrest front arm (8), moreover the footrest rear arm (7) is connected by a pull rod (9) attached in a rotating manner to the edge of a backrest attachment mechanism arm (10), mounted in a rotating manner approximately in the middle zone at a base plate (12) support (11) of the backrest attachment mechanism, whereas from the second edge to an axis (13) embedded in the supports (14) of the base plate (15) of the backrest mounting support mechanism, whereas the supports (14) have a backrest arm (17) placed on the axis (16), connected with the backrest support (11) axis (18).

2. A unit in accordance with claim 1, wherein an electric actuator (21) is attached on an axis (20) of a plate support (19,23) that is connected by a screw with the base plate (12), with a controller, with the opposite end attached to the axis (22) placed on the pull rod (9).

Ansprüche

1. Freizeitmöbelstück mit einer Rückenlehne und Fußstütze mit einer Vorrichtung in Form eines Fußstützen-Arretierungsmechanismus und eines Rückenlehnen-Arretierungsmechanismus zur Änderung der Position der Rückenlehne und der Fußstütze, dadurch gekennzeichnet, dass der Fußstützen-Arretierungsmechanismus über zwei Scherenmechanismen, jeweils in Form eines unteren Scherenschenkels (1) und eines oberen Scherenschenkels, verfügt, an dem an den jeweiligen Vorderkanten der Fußstützenunterbau (3) des Freizeitmöbelstücks rotierend angebracht ist, und der untere Scherenschenkel (1) an den entgegengesetzten Kanten rotierend an dem vorderen Verbindungsstück des Scherenmechanismus (4) angebracht ist, der in dessen mittlerem Bereich rotierend am oberen Scherenschenkel (2) und in dessen hinterem Bereich an einer Stütze des Scherenmechanismus (5) angebracht ist, die am Rahmen des Freizeitmöbelstücks befestigt ist, an dem ebenso ein hinteres Verbindungsstück des Scherenmechanismus (6) im mittleren Bereich rotierend am Endstück des unteren Scherenschenkels (1) angeschlossen ist, wobei der Endbereich des hinteren Verbindungsstücks des Scherenmechanismus (6) einen rotierend befestigten hinteren Fußstützenschenkel (7) zum Verbinden mit dem hinteren Verbindungsstücks des zweiten Scherenmechanismus (6) aufweist, wobei die unteren Scherenschenkel (1) beider Scherenmechanismen in deren mittleren Bereichen mit dem vorderen Fußstützenschenkel (8) verbunden sind und der hintere Fußstützenschenkel (7) zudem mit einer Zugstange (9) verbunden ist, die rotierend an der Kante des Schenkels des Rückenlehnen-Arretierungsmechanismus (10) angebracht ist, der etwa im mittleren Bereich rotierend an einer Stütze (11) der Grundplatte (12) des Rückenlehnen-Arretierungsmechanismus ausläuft und von der zweiten Kante zu einer Achse (13), die in den Stützen (14) der Grundplatte (15) des Stützmechanismus der Rückenlehnenbefestigung befestigt ist, wobei die Stützen (14) einen Rückenlehenschenkel (17) aufweisen, der auf der Achse (16) platziert und mit der Achse (18) der Rückenlehnenstütze (11) verbunden ist.

2. Eine Vorrichtung nach Anspruch 1, in der ein elektrischer Antrieb (21) auf einer Achse (20) eines Stützbleches (19, 23) angebracht ist, das durch eine Schraube mit der Grundplatte (12) verbunden ist, eine Steuerung aufweist und das entgegengesetzte Ende an der an der Zugstange (9) platzierten Achse (22) befestigt ist.

Revendications

1. Meuble d'agrément doté d'un dossier, d'un repose-pieds et d'une unité sous la forme d'un mécanisme de fixation du repose-pieds et d'un mécanisme de fixation du dossier lesquels servent à modifier la position du dossier et du repose-pieds, caractérisé en ce que le mécanisme de fixation du repose-pieds présente deux mécanismes à pantographe, chacun sous la forme d'un bras inférieur de pantographe (1) et d'un bras supérieur de pantographe (2), auxquels, sur leurs bords avant, les bases de repose-pieds (3) du meuble sont fixées de manière rotative, et le bras inférieur du pantographe (1), sur le bord opposé, est fixé de manière rotative à un connecteur avant du pantographe (4), qui, dans sa zone centrale, est fixé de manière rotative au bras supérieur du pantographe (2), et dans sa zone d'extrémité à un support de pantographe (5) monté dans le cadre du meuble d'agrément, auquel est également fixé un connecteur arrière du pantographe (6), relié dans la zone centrale de manière rotative à l'extrémité du bras inférieur du pantographe (1), alors que dans la zone d'extrémité, le connecteur arrière du pantographe (6) comporte un bras arrière de repose-pieds (7) monté en rotation pour la connexion avec le second connecteur arrière du pantographe (6), alors que les bras inférieurs' du pantographe (1) des deux pantographes sont connectés dans leurs zones centrales avec un bras avant du repose-pieds (8), de plus le bras arrière du repose-pieds (7) est connecté par une tige de traction (9) fixée de manière rotative au bord d'un bras du mécanisme de fixation du dossier (10), monté de manière rotative approximativement dans la zone centrale sur un support (11) de la plaque de base (12) du mécanisme de fixation du dossier, tandis que du deuxième bord à un axe (13) encastré dans les supports (14) de la plaque de base (15) du mécanisme de fixation du dossier, les supports (14) ont un bras de dossier (17) placé sur l'axe (16), relié à l'axe (18) du support (11) du dossier.

2. Unité selon la revendication 1, dans laquelle un actionneur électrique (21) est fixé sur un axe (20) d'un support de plaque (19, 23) qui est relié par une vis à la plaque de base (12), avec un contrôleur, l'extrémité opposée fixée à l'axe (22) étant placée sur la tige de traction (9).

Drawing