EP2051606A2

EP2051606A2 - Armchair

Info

Publication number: EP2051606A2
Application number: EP07788414A
Authority: EP
Inventors: Michael Mackert
Original assignee: Kintec Solution GmbH
Current assignee: Kintec Solution GmbH
Priority date: 2006-08-19
Filing date: 2007-08-14
Publication date: 2009-04-29
Anticipated expiration: 2027-08-14
Also published as: DE102006038736A1; WO2008022939A2; RU2396891C1; DE102006038736B4; DK2051606T3; US20090289477A1; US7918496B2; WO2008022939A3; EP2051606B1; ES2397030T3

Abstract

Armchair (1) with a seat surface (2) and a leg rest (4) which can be pivoted out, wherein the armchair can be pivoted between a sitting position and a reclining position, for which purpose the seat surface (2) can be displaced to the rear in relation to a fixed frame (3) and is articulated in the front region via erecting levers (9), and the leg rest (4) is coupled to the seat surface (2) in such a manner that it is pivoted when the seat surface (2) is displaced to the rear, wherein the leg rest (4) is connected to the erecting levers (9) by means of a first sliding mounting (12) and is articulated on the fixed frame (3) by means of a second siding mounting (13), wherein the first sliding mounting (12) is connected pivotably to the second siding mounting (13), and wherein the second sliding mounting (13) is configured in such a manner that its orientation changes during the pivoting operation, characterized in that the leg rest (4) has a thigh part (10) and a calf part (11), which parts are connected pivotably to each other in such a manner that, when the seat surface (2) is displaced to the rear, the calf part (11) is pivoted from a position arranged approximately parallel to the seat surface (2) and below the seat surface (2) into an approximately horizontal position.

Description

armchair

The invention relates to a chair with a seat, wherein the chair between a sitting and lying position is pivotable, to which the seat is displaced to the rear.

Such chairs are known and are also referred to as sitting and lying furniture. They allow an adjustment of the position between a "normal" upright sitting position and a far back, z. B. approximately horizontally oriented lying position.

In the lying position, an additional leg rest can be swung forwards / upwards. The problem is the distance between the front edge of the seat and the floor, which limits the size of the leg rest. To solve this problem, pull-out legrests are used, which are operated via scissors lever systems, Bowden cables, etc.

In such, from DE 296 00 282 U1 known chair, it is necessary to make the adjustment by shifting the seat by pressing on the armrests, as a Parallellenkersystem is provided, the body weight and the center of gravity together with the Seat shifted backwards. The leg rest is connected to the parallel link system in such a way that it is pivoted out or swung in during pivoting. The leg rest is further formed in two parts, wherein the two parts move against each other during pivoting, so as to create a longer contact surface despite small size in the pivoted state. The parallel link system requires a relatively large height and to change the inclination of the seat when moving a toggle mechanism is necessary. To retract the extended part of the leg rest when swiveling in, a pull-in rope is provided.

DE 198 30 418 A1 discloses a chair in which the seat element is arranged so that it is displaceable in relation to the underframe to the rear and is coupled to the backrest by connecting means which tilt the backrest when moving the seat part to the rear, wherein the backrest is connected to the seat member and the base by adjusting means which can make changes in the tilt angle of the backrest regardless of the position of the seat. Furthermore, the footrest is coupled to the underframe and the seat so that they Moving the seat backwards and forwards / upwards. For this purpose, the footrest is coupled to the underframe and the seat by a scissor system arranged inside behind or below the footrest. Similar to the armchair known from DE 296 00 282 U1 a Bowden cable is provided, which is used for moving the plate elements of a double plate arrangement against each other.

From DE 20 2005 000 136 U1 a chair is known, the seat surface consists of a tubular frame, wherein the lateral tubes are each provided between the front and rear provided double roller assemblies, so that the seat is horizontally displaceable.

DE 44 30 303 A1 discloses a chair with fold-out legrest, in which the seat is pivoted when swinging the legrest up to increase the clear height under the seat part, so that the legrest can be swung despite greater length than the clear height , For this purpose, the seat part is articulated on a seat joint near the seat of the frame and the legrest with its one end to a knee joint directly to the seat part and coupled together so that the seat part in intermediate positions during folding and unfolding by pivoting about the seat hinge on the side of his knee joint opposite the stand surface is automatically raised.

DE 37 18 645 A1 also discloses a chair with swivel-out legrest, in which the legrest is pivotable between a substantially aligned with the seat part unfolded end position and a folded down at least partially under the seat part end position. The leg rest consists of a thigh part and a lower leg or foot part hinged to it. These are connected by coupled drive and transmission means. In an intermediate position during the unfolding process, the thigh part and the foot part form an acute angle. The drive and transmission means have a coupling gear, which includes a thigh rocker, a foot pad and hiss links. The thigh rocker is connected to the thigh part and hinged to a seat-mounted seat joint. The Fußkoppel is connected to the foot part and hinged to a knee joint of the thigh swing. The intermediate links are connected to one another at a common joint. An intermediate member is at a hinge of the femoral and the other intermediate member is at one Wrist joint of the foot pad jointed near the knee joint. The Fußkoppel has a on the opposite side of the knee joint on the hinge joint projecting, the free end of the foot forming lever. The joint joint is in both end positions under the action of a holding member in each case in a stable position.

From WO 2004/034849 A1 a mechanism for a chair is known, which allows the pivoting and simultaneous removal of the leg rest by moving the seat backwards, which is approximately vertically downwards in the pivoted state. For this purpose, the mechanism comprises a substantially fixed, linearly extendable element, which is connected to the frame and is pivotally articulated to the leg rest, and a pivotable, linear extendable element, which is fixedly connected to the leg rest and pivotable with the substantially fixed, linear extendable element is articulated. The extendable elements are designed as telescopic profile rails. A portion of the substantially fixed rail is connected to the frame and the other part pivotally connected to the leg rest. One part of the pivotable profile rail is accordingly pivotable with the frame and the other part, which is fixedly connected to the legrest, is pivotally connected to the part of the substantially fixed profile rail, which is pivotally connected to the legrest. Also, when moving the seat over a parallelogram-like lever system, the substantially fixed rail is changed in their orientation, so that a chair structure is achieved, despite the simple, stable construction a smooth and harmonious and soft pivoting of the legrest allowed (see, for Page 7).

However, the construction disclosed in WO 2004/034849 A1 has some disadvantages.

Thus, it is merely provided that the leg rest in the pivoted state is approximately vertically downwards. Thus, a light, elegant overall visual appearance of the chair can not be realized. Also, it has been found that the users still want the pull-out and pivoting mechanism smoother and more harmonious pull-out and pivoting mechanism. The invention has for its object to provide a chair with a seat and a swinging leg rest, which is very simple and without complex mechanics to adjust between the sitting and lying position. In particular, the leg rest in the pivoted position "invisible" should be located below the seat and still provide in the swung-out position sufficient support surface for comfortable storage of the legs available. It is also particularly important that a smooth overall movement sequence results when pivoting.

This object is achieved by the recited in claim 1 armchair.

Characterized in that the leg rest has a thigh part and a lower leg part, which are pivotally connected to each other so that the lower leg part is pivoted to the rearward displacement of the seat from a position approximately parallel to the seat and below the seat in an approximately horizontal position, it is It is possible to swivel the leg rest below the seat and approximately parallel to it, so that it does not disturb the appearance of the chair.

In particular, this embodiment allows the provision of a leg rest with a particularly large contact surface, since the leg rest is not only pulled out, but also opened.

Here, the lower leg part may be pivotally hinged to the thigh part and be pivotally connected to the second sliding bearing. Thus, the simultaneous swinging out and swinging in and out or pulling in of the leg rest is achieved in a simple manner.

A particularly harmonious and smooth movement of the leg rest from the pivoted to the pivoted position (and vice versa) is achieved when the second sliding bearing is suspended between the seat and frame so that their angle changes during pivoting.

Conveniently, the second slide bearing is on the one hand pivotally suspended on the frame and on the other hand articulated via a lever on the seat, so that it is arranged vertically variable in the rear area during pivoting. Especially It is preferred if the lever is a Z-shaped multi-part lever, in which the individual partial levers can be arranged pivotably against each other.

Thus, a nearly fixed arrangement of the second slide bearing is achieved, but which allows a necessary compensation of the orientation of the second sliding bearing, so that nothing stuck in the movement of the leg rest or the armchair between their positions. It is virtually a fixed in a narrow range floating storage.

In a particularly preferred embodiment, the thigh part is connected by means of the first slide bearing with the setting levers and articulated by means of the second slide bearing on the fixed frame, wherein the thigh part forms the pivotal connection between the first slide bearing and the second slide bearing.

Further features, details and advantages of the invention will be explained with reference to the following description of an embodiment with reference to the drawing. Show it:

Figure 1 is a perspective view of a chair according to the invention, wherein the leg rest is in the pivoted position.

Fig. 2 is a simplified side view of the chair of Fig. 1;

FIG. 3 is a perspective view of the chair of FIG. 1 with the leg rest in an intermediate position during pivoting; FIG.

Fig. 4 is a simplified side view of the chair of Fig. 3;

Fig. 5 is a perspective view of the chair of Figure 1, wherein the leg rest is in the pivoted position, and

6 is a simplified side view of the chair of FIG .. 5

In the figures, a chair designated as a whole with 1 or the underlying this mechanics is shown, for reasons of clarity, a possibly existing backrest, swivel base, armrests, etc. are omitted. It is understood that the backrest can be firmly coupled with the still to be described movement of the legrest or can be configured completely independently adjustable.

The chair 1 is adjustable between a seated position shown in FIGS. 1 and 2 and a lying position shown in FIGS. 5 and 6, whereby an intermediate position shown in FIGS. 3 and 4 is passed through.

The chair 1 comprises a seat 2, a fixed frame 3 and a retractable and retractable and swing out and leg rest. 4

The seat 2 consists essentially of two cheeks 5 angled on the upper side, which are arranged on the respective sides of the chair and connected by corresponding struts.

The frame 3 consists essentially of an approximately U-shaped support 6 which extends downwardly and to which the rotary foot, not shown, is attached. At the respective end sides of the support 6 are also belonging to the frame 3 side cheeks 7, which extend obliquely upward sloping forward.

The cheeks 5 are pivotally connected in the rear area via a pivot lever 8 with the cheeks 7 of the frame. In the front area, the cheeks 5 are connected in accordance with pivotable setting lever 9. Thus, the seat surface 2 for initiating the displacement movement of the seated position (see Fig. 1) in the

Lying position (see Fig. 5) are moved backwards, wherein the seat surface 2 while slightly lowered in the rear and easily placed in the front area compared to the fixed frame.

At the front edge of the seat 2 and their cheeks 5, the leg rest 4 is arranged. This has a thigh portion 10 and a pivotally connected lower leg part 1 1. The lower leg part 1 1 is pivoted in the rearward displacement of the seat 2 from a position approximately parallel to the seat 2 and below the seat 2 position in an approximately horizontal position. The lower leg part 1 1 consists essentially of levers 15, which are pivotally attached to the thigh part 10 and connected to each other via corresponding struts.

The thigh part 10 essentially comprises two angle plates 16 arranged on the respective left and right sides of the leg rest 4. The angle plates 16 are linearly displaceable via first slide bearings 12 with the erection levers 9 and are pivotably connected via swivel levers 17 to a second slide bearing 13. The rocker arms 17 are transversely stiffened.

The leg rest 4 is thus connected by means of the first sliding bearing 12 to the raising levers 9 and articulated by means of the second slide bearing 13 via the pivot lever 17 to the fixed frame 3 and the cheeks 7. The first sliding bearing 12 is thus pivotally connected to the second sliding bearing 13.

The angle plates 15 of the thigh portion 10 are connected by means of the first slide bearing 12 with the raising levers 9 and articulated by means of the second slide bearing 13 on the fixed frame 3 and their cheeks 7. The thigh part 10 formed the pivotal connection between the first sliding bearing 12 and the second sliding bearing 13.

Further, the lower leg part 1 1 is pivotally hinged to the thigh part 10 and connected via a pivot lever 14 pivotally connected to the second sliding bearing 13, to which the lever 14 is articulated to the lever 17.

The sliding bearings 12 and 13 are so-called ball rail, so consist of rails, which are arranged linearly displaceable ball bearings.

The first sliding bearings 12 are thus each secured between the raising levers 9 and the corresponding angle plates 16 of the femoral part 10. Thus, the angle plates 16 are linearly displaceable relative to the raising levers 9.

The second slide bearings 13 are therefore pivotally (not visible) articulated in the front region on the respective cheek 7 and designed in the rear area so that their orientation changes during pivoting. This is in each case a corresponding lever 18 is provided, which is designed in several parts and Z-shaped. The individual parts 18A, 18B and 18C are arranged pivotable relative to one another.

The one part 18 A is firmly welded to the seat side cheek 5. The second part 18C is pivotally attached to the second slide bearing 13. The parts 18A and 18C are hingedly connected via the third part 18B.

Thus, the lever 17 is compressed or pulled apart when moving the seat surface 2, so that each attached thereto rear portion of the second sliding bearing 13 raises or lowers.

Overall, the following sequence of movements in the adjustment of the chair 1 from the sitting position (see Fig. 1 and 2) in the lying position (see Fig .. 5 and 6):

To initiate the movement, the user shifts his weight to the rear, so that the seat 2 or its cheeks 5 move backwards relative to the frame 3 or its cheeks 7, wherein the cheeks 5 are guided in the rear area by the pivot lever 8.

At the same time the raising lever 9 are pivoted forward and upward in the front region by the displacement movement, so that the cheeks 5 of the seat 2 are slightly raised.

First, the upper leg part 10 is pivoted upward and forward by the pivoting of the raising lever 9 (see Fig .. 4).

By pivoting the raising lever 9, the orientation or the angle between the sliding bearings 12 and 13, so that the leg rest 4 begins to be served and pulled out.

At the same time a change in the articulation points of the lever and an extension of the lever or the distances of the articulation points is effected by the change in angle between the sliding bearings 12 and 13, so that the lower leg part 1 1 begins to be unfolded and a withdrawal of the first slide bearing 12 begins. The parts 18A, B and C of the Z-shaped lever 18 pivot to each other, so that the rear portion of the second slide bearing 13 is slightly raised by shortening the articulation points of the parts 18A, B and C to each other. As a result, a harmonious overall movement is achieved in which "nothing is stuck".

In the further movement of the cheeks 5 of the seat 2 to the rear (see Fig. 6), the set-up lever 9 reach its final position, whereby the leg rest 4 is fully extended and swung open and unfolded. The slide bearings 12 and 13 are now pulled out.

The parts 18A, B and C of the Z-shaped lever 18 have their apex of shortening the articulation points of the parts 18A, B and C to each other and again pivoted back or forth, so that the rear portion of the second sliding bearing 13 after its lifting is lowered again.

The final position of the chair 1 is chosen and limited by a limiting element 19 (see Figures 3 and 5) so as to be held by the weight of the user. The leg rest 4 is positioned much higher than usual and at the same time offers an extended support surface for the legs.

The assumption of the sitting position can also be achieved by the shifting of the weight of the user, if necessary with the assistance of a spring, not shown, by reversing the above-described movements.

LIST OF REFERENCE NUMBERS

1 armchair

2 seats

3 frame

4 leg rest

5 cheeks

6 support

7 cheeks

8 pivot lever

9 raising lever

10 thigh part

1 1 lower leg part

12 slide bearing

13 plain bearing

14 pivot lever

15 levers

16 angle plates

17 pivot lever

18 levers

18A part of the lever 18

18B part of the lever 18

18C part of the lever 18

19 limiting element

Claims

claims

1 . Armchair (1) with a seat surface (2) and a swing-out leg rest (4), wherein the chair between a sitting and lying position is pivotable, to which the seat surface (2) against a fixed frame (3) is displaced to the rear and in the front The area is articulated via raising lever (9) and the leg rest (4) is coupled to the seat surface (2) in such a way that it is pivoted when the seat surface (2) is moved backwards, the leg rest (4) being moved by means of a first slide bearing (12 ) is connected to the raising levers (9) and articulated by means of a second sliding bearing (13) on the fixed frame (3), wherein the first sliding bearing (12) is pivotally connected to the second sliding bearing (13), and in that the second plain bearing ( 13) is designed such that their orientation changes during pivoting, characterized in that the leg rest (4) has a thigh part (10) and a lower leg part (1 1), the derar t are pivotally connected to each other, that the lower leg part (1 1) when the rearward displacement of the seat surface (2) from a position approximately parallel to the seat surface (2) and below the seat surface (2) is pivoted to an approximately horizontal position.

2. Armchair according to claim 1, characterized in that the second slide bearing (13) between such seat (2) and frame (3, 7) is suspended, that changes their angle during pivoting.

3. Armchair according to claim 1 or 2, characterized in that the second slide bearing (13) on the one hand pivotally on the frame (3, 7) is suspended and on the other hand via a lever (18) is articulated on the seat surface (2), so that it is arranged vertically variable in the rear area during pivoting.

4. Armchair according to claim 3, characterized in that the lever is a Z-shaped multi-part lever (18A, B, C).

5. Chair according to claim 4, characterized in that the individual partial levers (18A, B, C) are arranged pivotably against each other.

6. Armchair according to one of the preceding claims, characterized in that the thigh part (10) by means of the first sliding bearing (12) connected to the setting levers (9) and by means of the second slide bearing (13) on the fixed Frame (3, 7) is articulated, wherein the thigh part (10) forms the pivotal connection between the first slide bearing (12) and the second slide bearing (13).

7. Armchair according to one of the preceding claims, characterized in that the lower leg part (1 1) is pivotally articulated on the thigh part (10) and is pivotally connected to the second sliding bearing (13).