ES2975377T3 - Seating and recliner furniture - Google Patents

Abstract

The sitting and reclining furniture substantially consists of a base frame by which the sitting and reclining furniture is supported on a floor surface, a seat which is hinged to the base frame, a backrest which is hinged to a rear end of the seat and to the base frame and a footrest which is attached to the seat and is adjustable by a footrest mechanism between an extended and a retracted position. The sitting and reclining furniture is adjustable between a sitting position and a reclining position, the base frame having a swinging frame in the manner of a four-link chain to which the seat is hinged, the swinging frame being in the sitting position in a rear position and in the reclining position in a front position on the base frame. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Seating and reclining furniture

The invention relates to a seating and reclining piece of furniture which is adjustable from a sitting position to a reclining position, in particular a bed position.

According to patent document EP 3281 558 B1, an upholstered piece of furniture with a reclining function is known, which comprises a base frame to which a seat is hingedly connected. Furthermore, a backrest is hinged to a rear end of the seat and to the base frame. Furthermore, a footrest can be adjusted between an extended position and a retracted position. In the reclining or bed position, these three elements (backrest, seat and footrest) are aligned essentially flat and horizontally with the floor surface.

In order to be able to move the upholstered furniture back and forth easily between the sitting position and the reclining position, the upholstered furniture is designed in such a way that the seat is guided on a lower and upper guide rail, the lower guide rail being S-shaped, so that the rear of the seat moves via an approximately S-shaped path when moving from the sitting position to the reclining position, meaning that a support element arranged on the seat to support it is initially located off the floor surface and is lowered to floor level only after a predetermined distance has been overcome. The seat pushed forward is supported in the reclined/bed position via the support element.

Documents CN 108294515 A and CN 110179271 A disclose seating and reclining furniture according to the preamble of claim 1.

The invention is based on the object of specifying seating and reclining furniture which allows a structurally simpler adjustment between the seating position and the reclining position and which increases the stability of the seating and reclining furniture.

According to the invention, this object is achieved by a seating and reclining piece of furniture according to claim 1, which consists substantially of

a. a base frame with which the seating and reclining furniture rests on a floor surface, b. a seat hinged to the base frame,

c. a backrest hinged to a rear end of the seat and to the base frame and

d. a footrest that is supported by the seat and is adjustable between an extended position and a retracted position by means of a footrest mechanism, the seating and reclining furniture is adjustable between a seating position and a reclined position,

The base frame has a swing frame in the form of a four-link chain to which the seat is hingedly connected, the swing frame being in a rearward position in the sitting position and in a forward position in the reclined position on the base frame. In addition, the seat has a support leg which, in the reclined position, comes into contact with the ground surface to support the seat and is located at a distance from the ground surface in the sitting position.

The two guide rails according to EP 3281 558 B1 are replaced according to the invention by the swing frame in the manner of a four-link chain, by means of the displacement of the seat and backrest coupled to it by a tilting movement of the swing frame, so that the adjustment mechanism is considerably simplified both in production and in assembly.

According to a preferred embodiment of the invention, the swing frame has two pivoting arms spaced apart from each other, each of which is hinged at one end to the (stationary) base and is hinged at the other end to the seat or to an intermediate pivoting element. According to a preferred embodiment, the seat (on each side) is in turn hinged to the swing frame, in particular to the intermediate pivoting element, with two pivoting arms in the manner of a four-link chain. In the latter case, the seat can be moved forwards with the aid of the swing frame relative to the part of the base frame which is fixedly supported on the floor surface. Depending on the dimensioning of the four-link chain, the seat can also be rotated so that a slightly raised seat in the front seating position is oriented substantially parallel to the floor surface in the reclined position. If the swing frame has a tilting element, the seat is held in place on the base frame by a second four-link chain via the two articulated arms. The use of two four-link chains increases the travel distance of the seat when moving from the sitting position to the reclining position. In principle, however, it is also conceivable that the travel distance is achieved with just one four-link chain.

Ideally, the support leg only briefly touches the floor surface just before reaching the reclined position to prevent the support leg from contacting an obstacle, such as a carpet edge, or causing the support leg to rub against the floor surface.

The user feels particularly comfortable if he can remain in the seating and reclining furniture when adjusting it between the sitting and reclining positions. However, it must be ensured that the base frame cannot tilt forward during movement. This can be solved, for example, by dimensioning the base frame large enough in the longitudinal direction. In addition, the adjustment mechanism can be dimensioned so that the seat with the footrest is not pushed too far forward. With this solution, however, it is accepted that the backrest in the reclining position protrudes relatively far back over the base frame. A corresponding clearance to the wall or other objects is required behind the seating and reclining furniture. In many cases, however, it is desired to keep the distance to the rear as small as possible, so that the seat and footrest move relatively far forward. As a result, it may be necessary for the base frame to have at least one (additional) support element which comes into contact with the floor surface at least in the reclined position, which is hinged to the swing frame and can be moved with the swing frame between a retracted position and an extended position, the support element being moved in the sitting position in the retracted position and in the reclined position in the extended position. For this purpose, in a special embodiment, the support element may have at least one wheel or a roller which is in contact with the floor surface and which is fastened to a support which is movably guided in the base frame, the support being hinged to the swing frame via at least one drive rod, so that a movement of the swing frame causes a simultaneous displacement of the support together with the support element.

Although manual adjustment of the seating and reclining furniture from the seating position to the reclined/bed position is conceivable in principle, the comfort of such seating and reclining furniture for the user is significantly increased if the seating and reclining furniture is electrically adjustable. According to a first illustrative embodiment, a first drive mechanism is provided for extending and retracting the footrest. Furthermore, the seat and backrest can be adjusted between the seating position and an intermediate position by a seat and backrest adjustment mechanism, the angle between the seat and backrest being greater in the intermediate position than in the seating position. Actuation of the seat backrest adjustment mechanism can be implemented according to the first embodiment with a second drive unit.

In a second illustrative embodiment of the invention, it can also be provided that this adjustment is carried out with the aid of the first drive, in the sense that the seat and backrest are adjusted after the footrest has been extended. However, it is also conceivable that both the extension of the footrest and the adjustment of the seat and backrest are carried out simultaneously or partially simultaneously with the first drive.

In both the first and second illustrative embodiments, however, a swing frame drive may be provided to rotate the swing frame between the rear and forward positions. The swing frame drive thus moves the seating and reclining furniture from the intermediate position to the reclined position. In the seating position of the seating and reclining furniture, the footrest is retracted while the backrest is raised and the seat is in a retracted position relative to the base frame, in which it is preferably slightly tilted backwards. A horizontal alignment would also be conceivable.

In the intermediate position of the seat and recline furniture, the footrest is extended and at the same time the angle between the seat and backrest is increased by means of the seat and backrest adjustment mechanism, the angle preferably increasing by a maximum of 20°, and most preferably by a maximum of 15°. The increase in the angle between the seat and backrest is achieved, on the one hand, by tilting the backrest backwards by means of the seat and backrest adjustment mechanism, and, on the other hand, by moving the backrest forwards together with the seat. The seat can even be raised slightly at the front to achieve a particularly comfortable intermediate position for the user, which is especially suitable for relaxing or watching television.

From this intermediate position, the seat and recline furniture is moved into the reclining position by activating the swing frame drive, in which the footrest is still extended, the backrest is lowered backwards and the seat is in a position pushed forwards in relation to the base frame. Ideally, the backrest, seat and footrest are aligned approximately parallel to the floor surface and, with their upholstery, preferably form a flat reclining surface like a bed.

The backrest is preferably articulated via a backrest frame on a rotation axis extending transversely at the rear end of the seat. The seat backrest adjustment mechanism also has at least one actuating rod, which is articulated with a first end to the backrest frame and with another end to the base frame, so that the angle between the seat and the backrest changes when the seat is displaced relative to the base frame. The backrest is thus articulated solely to the seat and articulated directly to the base frame via at least one actuating rod.

Other configurations of the invention are explained in more detail by referring to the following description of two illustrative embodiments.

In the figures:

Figures 1-5 are side views of the seating and reclining furniture according to a first embodiment,

Figures 6-9 are three-dimensional representations of the seating and reclining furniture according to the first illustrative embodiment,

Figures 10-13 are side views of the seating and reclining furniture according to a second embodiment and

Figures 14-16 are three-dimensional representations of the seating and reclining furniture according to the second embodiment.

Figures 1 to 9 show a first illustrative embodiment of a seating and reclining piece of furniture, consisting mainly of a base frame 1 with which the seating and reclining piece of furniture is supported on a floor surface 2, a seat 3, a backrest 4 and a footrest 5. The seating and reclining piece of furniture can be adjusted between a seating position shown in Figure 1 and 6 and a reclining position shown in Figure 5 and 9, intermediate positions can also be used (Figures 2 to 4 and 6 to 8).

Only the seat mechanism is shown in the figures. Of course, the seat 3, backrest 4 and footrest 5 are provided with appropriate padding, which has been omitted for reasons of clarity. The mechanics are also covered on the side and back in the usual way.

The base frame 1 has a basic structure with two longitudinal frame parts 100, 101, which are connected to each other by crossbars 102, 103. Furthermore, a swing frame 104 is provided in the basic structure, which is designed as a four-link chain and has two separate swing arms 105, 106, which are articulated at one end at hinge points 107, 108 on the base frame 1 or on its longitudinal frame parts 100, 101. With the respective other end, the two swing arms 105, 106 are fastened at second hinge points 109, 110 to an intermediate swing element 110. By rotating the swing arms 105, 106, the intermediate swing element 110 moves forwards or backwards in the direction of the longitudinal frame parts 100, 101. The base frame 1 has a basic structure with two longitudinal frame parts 100, 101, which are connected to each other by crossbars 102, 103. The swing frame 104 is arranged in a horizontal position, and ... The oscillating element 104 is also correspondingly designed on the other side of the seating and reclining furniture, so that on each side two oscillating arms 105, 106 are articulated to the associated longitudinal frame parts 100 and 101 and articulated at the other end, each connected to an intermediate oscillating element 110.

The base frame 1 is supported at its rear end by support legs 111 on the floor surface 2. A support element 112 is provided at the front end of the two longitudinal frame parts 100, 101, so that the seating and reclining furniture is supported on the floor surface 2 in the front area via the support elements 112 and in the rear via the support legs 111. If the support elements 112 are designed as a wheel or a roller, as shown in the illustrative embodiment, the seating and reclining furniture can be conveniently moved and positioned by lifting the rear part. The support legs 111 ensure that the seating and reclining furniture does not slide unintentionally during use. Although only one support element 112 is shown in Figures 6 to 9 for reasons of clarity, two support elements are provided, so that the seating and reclining furniture is supported on the floor surface 2 at four points. The two support elements 112 are attached to a support 113 designed as a rod, the support 113 being movably guided in guides 114 in the longitudinal frame parts 100 and 101. Furthermore, the support element 112 is hinged to a drive rod 115, which is hinged at its other end to the (front) swing arm 105 at a hinge point 116. A pivoting of the swing arm 105 causes a displacement of the support 113 and thus a displacement of the support element 112 via the drive rod 115.

In the sitting position, the swing frame 104 is located in a rear position on the base frame 1, in which the support element 112 is also used on the longitudinal frame parts 100, 101 (Figure 1, 6). In the reclining position according to Figure 5 or 9, the swing frame 104 is located in a forward position in which the support 113 together with the support element 112 extends forward. In this way, the distance between the rear support legs 101 and the front support elements 112 is increased, so that unintentional forward tilting of the seating and reclining furniture can be reliably prevented when adjusting the reclining position, in particular if the adjustment is carried out with a person positioned on the seating and reclining furniture.

The footrest 5 is supported on the seat 3 and can be adjusted between an extended position (Figure 2) and a retracted position (Figure 1) via a footrest mechanism 500. In the illustrative embodiment shown, the footrest mechanism 500 is designed as a scissor-joint style linkage mechanism, which is supported at two articulation points 501, 502 on the seat 3 or its seat frame. The footrest mechanism 500 is also connected to a first drive 503, which is designed, for example, as a linear drive and is supported at one end on a crossbar 300 of a seat frame of the seat 3, while its other end is hingedly connected to a crossbeam 310. The crossbeam 310 is hinged at its two ends by lever arms 314 about an articulated shaft 312 on the seat frame. The lever arms 314 have hinge points 313 at the end opposite the hinge axis 312 for engaging the footrest mechanism 500. The cross beam is attached to the lever arm at a central region of the lever arm between the hinge axis 312 and the hinge point 313. Actuation of the first drive 122 causes the cross beam 310 to pivot about the hinge axis 312, resulting in the footrest 5 moving from the retracted position according to Figure 1 to the extended position according to Figure 2 via the footrest mechanism 500. When the mechanism is actuated in the opposite direction, the footrest 5 is retracted. A detailed description of the footrest mechanism can be found in EP 3 459 395 B1, to which reference is made herein.

The seat 3 has a seat frame, of which only the crossbar 300 and the two longitudinal bars 301, 302 are shown here. The seat 3 is articulated to the swing frame 104 on each side with two articulated arms 303, 304 in the manner of a four-link chain (second). The two articulated arms 304 are articulated via first hinge points 305, 306 on the longitudinal crossbar 301 and at second hinge points 307, 308 on the intermediate swing element 110 of the swing frame 104 (Figure 6). On the opposite swing frame 110, the seat 3 is correspondingly connected to the swing frame via two articulated arms. The four-link chain of the seat connection is formed by the link points 305, 306, 307 and 308.

The two articulated arms 303 and 304 form part of a seat back adjustment mechanism for adjusting the seat 3 and the backrest 4 between the seating position shown in Figure 1 and 6, respectively, to an intermediate position shown in Figure 3 and 8. The seat back adjustment mechanism also has an articulated shaft 400 with which the backrest 4 is coupled to the seat 3. The seat back adjustment mechanism also provides two drive rods 401, 402, which are hinged at one end to a hinge point 403 or 404 and at the other end to hinge points 117 or 118 on the base frame 1 (Figure 8). A second drive 309, which is preferably also designed as a linear drive, is hinged at one end to a cross bar 119 of the swing frame 104 and is also connected at its other end to the cross beam 310.

An activation of the second drive 309 in the direction of increasing the distance between the crossbar 119 and the crossbeam 310 causes a displacement of the seat 3 in which the articulated arms 303 and 304 pivot about their second articulation points 307 and 308 and move the seat forward. Since the backrest 4 is articulated at its lower end via the articulation axis 400 at the rear end of the seat 3, the lower end of the backrest 4 is pushed forward together with the seat 3. The actuating rods 401, 402 cause an increasing inclination of the backrest 4 backwards, so that the angle a between the seat 3 and the backrest 4 increases from the position shown in Figure 1 to the position shown in Figure 3.

Figure 1 shows the seating position of the recliner-seating furniture, in which the seat 3 is slightly tilted backwards and the backrest is slightly tilted backwards, the seat and backrest, for example, form an angle of approximately 100° / - 8°. In the illustration according to Figure 2, only the first drive was activated to bring the footrest 5 into the extended position. The seat 3 and the backrest 4 initially remain unchanged. Subsequent activation of the second drive 309 causes the seat 3 to pivot forwards with the aid of the two articulated arms 303, 304 to the position shown in Figure 3. The seat draws the backrest 4 articulated on the joint axis 400, the drive rods 401, 402, causing the backrest 4 to tilt backwards.

The articulated arms 303 and 304 are dimensioned in length and orientation in the positions according to Figure 1 and 3 such that the front end of the seat 3 is raised slightly when moving from the position according to Figure 1 to the position according to Figure 3, so that the seat is tilted 3° / - 2° further backwards. Furthermore, the angle a between the seat and the backrest 4 increases compared to the seating position according to Figure 1 by, for example, 12° / - 3°. Because the tilting of the backrest 4 backwards is accompanied by a movement of the lower end of the backrest 4 forwards, the clearance required for the tilting of the backrest is shortened behind the seating and reclining furniture. Ideally, the required clearance measured from the joint axis 400 is less than 50 cm.

The first intermediate position according to Figure 2 is, for example, a very convenient position for reading or watching television. The second intermediate position according to Figure 3 is especially suitable for relaxing.

In order to now move the seating and reclining furniture into the reclined position according to Figure 5, in which the seating and reclining furniture assumes a flat bed position, it is necessary to adjust the swing frame 104. For this purpose, a swing frame drive 120 is provided, in particular a linear drive, which is coupled at one end to a (front) crossbar 102 of the base frame 1 and is coupled at its other end to a cross beam 121, which in turn is connected to the rear articulated arms 304 of the swing frame 104. An activation of the swing frame drive 120 is transmitted via the cross beam 121 to the articulated arms, which pivot about the associated hinge point 108 on the base frame 1 and thereby rotate the swing frame 104 with its interposed tilting element 110 from the rear position in Figures 1 and 6 into the rear position. front shown in Figure 5 and 9. Activation of the swing frame drive 120 to the position shown in Figure 5 and 9 also causes the support element 112 to extend at the same time, which serves to support the weight shifted forward by the movement of the seat 3 and the footrest 5, so that this adjustment process prevents the seating and recline furniture from tilting forward even when there is a person on them.

In order to increase the stability of the seating and reclining furniture, in particular in the region of the front end of the seat 3, the seat has at least one support leg 311 on both sides, which in the reclined position according to Figure 5 and 9 comes into contact with the floor surface 2 to support the seat 3, said support leg being located at a distance from the floor surface 2 in the sitting position according to Figure 1 and also in the intermediate positions. The support leg 311 is placed on the floor surface 2 from above and can be moved over an existing carpet edge without any problems. In the reclined position according to Figure 5 and Figure 9, the footrest 5, the seat 3 and the backrest 4 with their associated upholstery (not shown) preferably form a reclining surface that is as flat as possible and horizontal to the floor 2.

The displacement of the seat 3 and thus the corresponding lowering of the backrest 4 is achieved first via the four-link chain (articulated arms 303, 304) with which the seat 3 is articulated to the swing frame. The further displacement takes place via the second four-link chain, which is formed by the swing frame 104.

10 to 16 show a second illustrative embodiment of a seating and reclining piece of furniture according to the invention, which differs substantially from the first illustrative embodiment only in that the second drive 309 has been dispensed with, so that in addition to the swing frame drive 120, only one further drive (first drive 122) is provided, with which both the footrest 5 is extended and retracted and the seat and backrest are adjusted. Otherwise, the design of the swing frame 104, the design and connection of the support element 112, the support leg 311 and also the footrest mechanism 500 are designed according to the first illustrative embodiment. The connection of the swing frame drive 120 with the tilt lever 106 is also identical.

The first drive 122 of the second embodiment is hinged at one end to the crossbar 300 of the seat frame of the seat 3 and at its other end to the crossbeam 310, the first drive 122 again being designed as a linear drive, so that when activated, the distance between the crossbar 300 and the crossbeam 310 can be varied. The crossbeam 310 is again hinged via lever arms 314 about the hinge axis 312 in the seat frame and is connected to the footrest mechanism 500 via hinge points 313. Actuation of the first drive 122 causes the crossbeam 310 to rotate about the hinge axis 312, which has the consequence that the footrest 500 moves from the retracted position according to Figure 14 to the extended position according to Figure 15 via the footrest mechanism 500.

In this illustrative embodiment, the lever arms 314 extend beyond the hinge axis 312 and provide an additional point of articulation 315 to which a link rod 316 is attached at one end. The other end of the link rod 316 is connected to the (rear) link arm 304 of the second four-link chain (Figures 14 and 16).

A rotation of the lever arm 314 via the cross beam 310 causes, on the one hand, activation of the footrest 5, and, on the other hand, the movement of the seat 3 forward with simultaneous inclination of the backrest 4 backwards, as described in the first illustrative embodiment. The seating and reclining furniture then reach the intermediate position shown in Figures 11 and 15, which corresponds, for example, to the position according to Figure 3 of the first illustrative embodiment.

Although in the example shown the first drive unit 122 is hinged to the crossbar 300 of the seat frame, it could also be connected to the swing frame. This would have the consequence, however, that, although the hinge rod 316 could be dispensed with, a much greater travel of the first drive 122 would be required.

To move the seating and reclining furniture from the position according to Figures 11 and 15 to the reclined position according to Figures 13 and 16, the swing frame drive mechanism 120 is again actuated in the same manner as described above.

The first illustrative embodiment has the advantage that the seat and backrest adjustment mechanism can also be operated independently of the footrest 5. It is conceivable that the intermediate positions according to Figures 2 and 3 can also be reached without the footrest being extended. However, since the second embodiment is operated with only two motors, it can be manufactured more economically.

Claims (13)

1. Seat and recline furniture with a. a base frame (1) with which the seating and reclining furniture rests on a floor surface (2), b. a seat (3) which is articulated to the base frame (1), c. a backrest (4) which is hinged to a rear end of the seat (3) and to the base frame (1) and d. a footrest (5) which is supported on the seat (3) and can be adjusted between an extended position and a retracted position through a footrest mechanism (500), where the seating and reclining furniture is adjustable between a seating position and a reclining position, wherein the base frame (1) has a swing frame (104) in the manner of a four-link chain, to which the seat (3) is articulated, the swing frame (104) being in a rear position in the seating position and in a reclined position in the front position on the base frame (1), characterized in that the seat (3) has a support leg (311) which comes into contact with the ground surface (2) to support the seat (3) in the reclined position and is arranged at a distance from the ground surface (2) in the seating position. 2. Seating and reclining furniture according to claim 1, characterized in that the seat (3) is articulated on each side with two articulated arms (303, 304) in the manner of a four-link chain on the swing frame (104). 3. Seating and reclining furniture according to claim 1, characterized in that a first mechanism (503, 122) is provided for extending and retracting the footrest (5). 4. Seating and reclining furniture according to claim 1, characterized in that a seat back adjustment mechanism is provided for adjusting the seat (3) and the backrest (4) between the seating position and an intermediate position, the angle between the seat (3) and the backrest (4) being greater in the intermediate position than in the seating position. 5. Seating and reclining furniture according to claim 3 and 4, characterized in that the seat back adjustment mechanism is coupled to the first drive (503, 122) to adjust the seat (3) and the backrest (4) between the seating position and the intermediate position. 6. Seating and reclining furniture according to claim 3 and 4, characterized in that the seat back adjustment mechanism is coupled with a second drive (309) to adjust the seat (3) and the backrest (4) between the seating position and the intermediate position. 7. Seating and reclining furniture according to claim 1, characterized in that a swing frame drive (120) is provided for rotating the swing frame (104) between the rear and front positions. 8. Seating and reclining furniture according to claim 1, characterized in that the seat backrest adjustment mechanism adjusts the angle (a) between the seat (3) and the backrest (4) by a maximum of 20°. 9. Seating and reclining furniture according to claim 1, characterized in that the backrest (4) is articulated with the seat (3) and at least one actuating rod (402) is provided, which is articulated at a first end to the backrest (4) and at another end to the base frame (1), so that the angle (a) between the seat (3) and the backrest (4) changes when the seat (3) moves relative to the base frame (1). 10. Seating and reclining furniture according to claim 1, characterized in that a. In the sitting position of the recline and seat furniture, the footrest (5) is retracted and the backrest (4) is raised, while the seat (3) is in a retracted position with respect to the base frame (1) and b. In the reclined position of the seating and reclining furniture, the footrest (5) is extended and the backrest (4) is lowered backwards, while the seat (3) is in a position pushed forward with respect to the base frame (1). 11. Seating and reclining furniture according to claim 1, characterized in that the base frame (1) has at least one support element (112) which comes into contact with the floor surface (2) at least in the reclined position and which is articulated on the swing frame (104) and movably connected to the swing frame (104) between a retracted position and an extended position, the support element (112) being positioned in the seating position in the retracted position and in the reclined position in the extended position. 12. Seating and reclining furniture according to claim 11, characterized in that the support element (112) has at least one wheel or a roller which is in contact with the floor surface (2) and which is attached to a support (113) which is movably guided in the base frame (1), the support being articulated on the swing frame (104) through at least one drive rod (115). 13. Seating and reclining furniture according to claim 1, characterized in that the swing frame (104) has two separate swing arms (105, 106) which are articulated at one end to the base frame (1) and articulated at the other end and connected to the seat (3) or an intermediate tilting element (110).