EP1294254B1 - Seat-recliner fitting that can be adjusted by a motor - Google Patents

Description

The invention relates to a chair fitting for motor Tilt adjustment of a backrest and motor Ausund Folding a two-piece legrest.

Known fittings of such kind consist of a variety of individual elements and assemblies in a chair frame and Mounted on the armrest, backrest, seat and leg support elements and need to be connected.

An armchair with adjustable toe and footstool is from document DE-U-9 420 149.

It is an object of the invention to provide a much simpler Furniture fitting to create, the most simple to the furniture parts to assemble.

The solution is that the fitting completely between two side plates connected with trusses preassembled at the factory is, on each of which a side wall with an armrest to attach is that on each side board seat fitting handlebar are articulated directly or indirectly, where a mounting bracket for fixing a seat frame over the length of which he himself approximately extended, articulated, and the leg support parts with a scissor arm directly or indirectly as a support bracket are articulated, the elbows on each leg supports wear, and at the mounting bracket directly or indirectly Mounting plate is articulated for holding a seat back frame and that between the two-sided mounting plates a Backrest crossbar is arranged and between the Mutual mounting angles a seat cross member is arranged and between this and the backrest crossbar itself Drive member of a Rückenlehnenverstellmotors extends and that between the two scissors a shear crossbar extends between the and one of the trusses is a drive member of a Leg propulsion engine extends, or that the Drive member of the legrest motor between a traverse and a arranged between the mounting brackets cross member extends.

Advantageous embodiments are in the subclaims specified.

The basic structure that the entire handlebar and drive means wear and also to be mounted on the backrest, seat and Wear support elements, consists of the two outer side panels, where to attach the side panels with the armrests are, and the intervening firmly connected with these Traverses. The handlebars are made of flat iron, z. T. as far as one Narrow clearance is needed, cranked, close to the boards arranged, and the mounting bracket and elbows extend with their mounting legs for receiving the seat frame or the plate-shaped leg supports in each case. The Basic structure also includes the drives with the motors.

The driving forces are transmitted from the motors via crossbars to the each arranged symmetrically to both sides, to be moved Transfer fittings directly or indirectly through crossbars. When Drive means are preferably provided spindle motors, the very easy to steer.

The entire basic structure is in bearing on its side panels Sidewalls added the armrests and side upholstery wear. A separate base frame for the furniture deleted since all other furniture parts, the back, the seat and the Leg support plates held on the basic structure and fastened are. The transverse stability of the furniture results except by the Crossbars through the crossbars and the winkelfest screwed Furniture parts that range from side fitting to side fitting.

The trusses and spars are preferably made of pipes that used in matching recesses and there detachable or fixed connected, z. B. welded, are.

The two leg supports lie through a suitable training of Scissor arms and linkages of the seat-side support on the one hand at the lower front scissor section and on the other with an auxiliary link at the lower seat side scissor section so to each other, that the legrests extended in one plane one behind the other and retracted approximately vertically one behind the other are arranged, wherein the inner support plate between the Scissors extend and the wider outer support plate the Front under the seat completes. The support plates can with a matching upholstery or covered with upholstery, so that they are an integral part of the optical seating design are.

An advantageous wide projection of legrests is through long Reached scissor links that are close under the seat directly or indirectly hinged to the side panels and the Pivoting to reach the ground. The whole Swiveling angle of the inner scissor arms is approx. 145 °. she lie in a plane of the scissors, so that small moments in the Bearings occur. The front links of the scissors are each on both sides of the rear and the associated terminal leg of Elbow that closes the scissors. One of the front Scissor link, preferably the outer one, is so wide that he always overlaps the others at least a bit, so that no Danger of crushing when adjusting the scissors for finger od. consists. In addition, this wide training scissors a high stability with extended support for receiving the Load.

The seat mounting brackets are each front. With a short and Rear with a longer seat fitting handlebar on the side board articulated directly or indirectly. These seat arms extend up. The front handlebar is with a Leg rest fitting handlebars and is associated with this adjusted by the legrest adjustment drive. The seat is thereby coupled with the legrests so that the seat link at exhibited supports are approximately parallel and at adjusted supports are inclined forward so that in this Position of the seat forward is further lowered and at the Adjust the rear substantially at a constant height. There the backrest is hinged to the seat mounting bracket in the rear area is and the Lehnenverstellantrieb between the seat and the Backrest is located, the respective backrest position remains relative to the seat of the legrest adjustment untouched, the seat and Lean together about horizontally shifted.

In a first embodiment, each of the mounting bracket of Seat and the mounting plate of the backrest on a mounting bracket extension hinged together, about on the middle height of the seat and the backrest between these close to the Lehnpolster is arranged. This closes the two upholstery in the sitting position close to each other and move away in the Lying only about a measure of half the seat cushion height equivalent. The side tightly attached to the upholstery Joints and mounting parts are sufficiently down in the gap offset so as not to be distracting.

In a second embodiment, each of the mounting bracket and the Mounting plate connected to a backrest scissors, whose Handlebars are designed and articulated so that the backrest pad and the seat cushion during the backrest adjustment always in the upper Touch area and no gap between them. For the Linkage of the lower seat side handlebar has the seat mounting bracket a downward extension. The upper The seated scissor arm is located near the lower back seat hinged to the other scissor arm.

In a further embodiment of the second embodiment, the Leherenscherenlenker arranged to a multi-part scissors, wherein thereby advantageous adjustments of the movements different upholstery are possible. This will be in Particularly advantageous way the touch of backrest and Seat pad throughout the adjustment range of the back almost without Slip the pads on each other possible and thus an elevated Wear of the contact points avoided.

In a third embodiment, the legrests on the Movement of the seat frame adjusted, whereby the engine at a Traverne is attached and its adjusting spindle over one Swivel lever, which attacks in the rear seat frame area, the Seat frame moved back and forth. The coupling of the seat frame in front area with the support bracket so allows the Adjustment of legrests. In this advantageous arrangement eliminates the cross member between the leg support links and allows greater freedom from this area.

Fig. 1

zeigt eine Seitenansicht eines Sessels in Liegestellung bei abgenommener Seitenwand, teilweise in Ansicht I - I;

Fig. 2

zeigt eine Aufsicht auf den Beschlag von Figur 1;

Fig. 3

zeigt eine Fußstütze teilweise eingezogen;

Fig. 4

zeigt die Lehne in einer Relaxstellung;

Fig. 5

zeigt die Sitzstellung;

Fig. 6

zeigt eine Lehne mit Scherenanlenkung in Sitzstellung;

Fig. 7

zeigt eine Liegestellung zum Sessel gemäß Figur 6, teilweise in Ansicht VII - VII;

Fig. 8

zeigt eine Aufsicht auf den Beschlag von Figur 7;

Fig. 9

zeigt einen Sessel, ähnlich zu Fig. 6 und 7, in einer Zwischenstellung mit einer mehrteiligen Schere zur Lehnenanlenkung und einer anderen Position des Beinstützenantriebs;

Fig. 10

zeigt eine Anlenkungsvariante zwischen Sitzrahmen und Stützenbeschlaglenker in einer Ausschnittsvergrößerung des Bereichs X gemäß Fig. 9;

Fig. 11

zeigt eine Ansicht A - A gemäß Fig. 10 im Schnitt;

Fig. 12

zeigt eine Aufsicht auf den Beschlag von Fig. 9.

Advantageous embodiments are shown in FIGS. 1-8:

Fig. 1

shows a side view of an armchair in a lying position with the side wall removed, partly in view I - I;

Fig. 2

shows a plan view of the fitting of Figure 1;

Fig. 3

shows a footrest partially retracted;

Fig. 4

shows the backrest in a relaxed position;

Fig. 5

shows the sitting position;

Fig. 6

shows a backrest with scissor linkage in sitting position;

Fig. 7

shows a lying position to the chair according to Figure 6, partly in view VII - VII;

Fig. 8

shows a plan view of the fitting of Figure 7;

Fig. 9

shows an armchair, similar to Figures 6 and 7, in an intermediate position with a multi-part scissors for Lehnenanlenkung and another position of the legrest drive.

Fig. 10

shows an articulation variant between the seat frame and support bracket in an enlarged detail of the area X in FIG. 9;

Fig. 11

shows a view A - A in FIG. 10 in section;

Fig. 12

shows a plan view of the fitting of Fig. 9th

In Figure 1, a chair in lying position in side view represented, whose one side wall is removed and at the Rear side wall 42 a complete assembly assembly is screwed, the symmetrical, in the picture congruent, fitting assemblies, each at one Side board 4 are held, of which the picture in the back concealed is screwed to the side wall 42. Because the lateral fitting assemblies are symmetrical, are continuous always the same reference characters for related parts related. Between the side boards 4 extend as Figure 2 shows stable trusses 40, 41, the tubular design welded in suitable board recesses or otherwise are detachably or firmly connected.

In the front and rear of the board 4 is one each Seat fitting arm 24, 34A articulated, at the other end respectively a mounting bracket 20 is hinged, at the inside directed leg a seat frame of a seat is bolted. The mounting bracket 20 is to the mirror image located with a stable seat cross member 22 connected.

The rear side extends from the mounting bracket 20 up to about halfway up the seat cushion a mounting angle extension 20A, to a fitting plate as a mounting plate 10 of the backrest. 1 or a back frame, hinged to which they laterally screwed several times. The said Lehnengelenk 23 at the Mounting plate 10 is located slightly below the surface of the Lehnpolsters. Under this Lehnengelenk 23 is a backrest crossbar 12 arranged from mounting plate 10 to mounting plate.

Each of this Lehnenquerholm 12 and the seat crossbar 22 is with a drive member 13, preferably a spindle, a Lehnenverstellmotor 11 hinged.

Presses the adjusting spindle 13, the spars 12, 22 apart, so the seat 2 is pushed forward on the seat mounting bracket 20, being supported on the short front arm 34A. At the Separating the spars 12, 22, the backrest 1 with the Mounting plate 10 is pivoted upward, as shown in Figures 3 and 4 in different phases shows. In the raised position Close the seat cushion and the Lehnpolster close to each other. The front seat handlebar 34A sits beyond its Board joints in the seat-side upper scissor arm 34 of the Support bracket handlebar and is common with its drive adjusted.

In the rest position shown in Figure 1, the backrest 1 is after Slightly inclined at the back and the seat cushion 2 at the back slightly inclined and one hand wide towards the back 1 shifted, however, remains a gap between the two pads by a few centimeters wide.

In front of the seat extend to a slightly lower level in alignment with each other the surface of two leg supports 3A, 3B, the screwed on both sides with elbows 30A, 30B respectively Support bracket links 34 - 38 are articulated, consisting of a Auxiliary link 38 and a pair of scissors 34 - 37 exist, the other end is hinged to the side board 4. The scissors 34 - 38 has relatively long levers that range approximately from seat to floor, when the scissors joint about its lowest point when pivoting goes through, as can be deduced from Figures 3 and 5, the one Intermediate state or the pivoted state of the leg supports 3A, 3B show.

The front leg rest 3B is pivoted vertically and reaches up with a small distance to below the frame of the Seat 2 and down to a few inches above the ground. In Transverse direction closes them, as Figure 2 shows, with low Side clearance the whole front area between the armchair side walls 42 off.

The rear leg rest 3A lies wrapped approximately parallel to front of this spaced, so that even a padding Has space. The side extension of the rear legrest 3A is according to Figure 2 is slightly smaller than the front, so the side Space for the scissors and the flange of the elbows 30A, 30B remains.

Thus, the rear legrest 3A from the vertical position in the about horizontal support position according to Figure 1 pivots when the Is operated scissors, is the downward leg of the Elbow 30A on the one hand to a front scissor arm 36th and on the other hand with an auxiliary link 38 on a rear side Scissor arm 35 hinged. The visibility of the Support bracket links 34-38 in Figure 1 correspond to a view I - I from the middle in Figure 2 on the above drawn fitting.

As Figure 2 shows, the rear scissor arms 34, 35th arranged one above the other close to the side board 4 and the front scissor arms 36, 37 right or left of these. These narrow design of the scissor assembly avoids the occurrence of torsional moments.

The outer front scissor arm 37 is about twice as wide as the rest trained. As a result, he has a much higher Resistance torque and it is formed in any traversing position Such gap between the front scissor arms, in the one Finger fits, which could be pinched by it. The back Scissor arms 34, 35 are also in their closest position, the figure Fig. 1 shows, spaced so far that fingers fit between and thus no danger of crushing exists.

FIGS. 6-8 show a second embodiment of the backrest linkage, which is done via scissors gear 14 - 17. The views Figures 6 and 7 are taken from the section VI - VI; the Side boards and the rear seat handlebars are for the better Clarity not shown there.

FIG. 6 shows the backrest 1 in an upright position and FIG. 7 in FIG completely lowered. The upholstery of the back 1 and the seat 2 touch each other in all positions; it does not form any disturbing Gap out, pulled in the loose cushions or clothes ends or could be trapped.

The seat fitting 20 has a downward Mounting angle extension 20B, on the one above the other one behind the other, the seat-side scissor arms 14, 15 are displaced are articulated. The leaning side scissor arms 16, 17 are after directed on the one hand to this and on the other hand one above the other spaced and consecutively on a mounting plate 10B hinged and about this with the backrest 1 to her frame connected.

As Figure 8 shows, the backrest transverse spar 20B is at the Lehnenverstellmotor 11 is connected, cranked formed. The backrest crossbar 20B extends between mounting plates 10B. These as well as all backrest drive elements and the backrest scissors gear lie in all backrest positions under the seat and the backrest cushion, and these pads extend laterally close to the armchair side walls.

Fig. 9 shows a chair in another exemplary Embodiment of the backrest scissors 14 - 17 and the Legrest drive 31, 33. The backrest scissor arms 14, 15, 16, 17 together with other Leherenscherenlenkern 15A, 16A one Multi-level scissors in the style of a Nuremberg scissors. The backrest 1 is shown in an upright position.

The seat-side scissor arm 15 is with the reclining side Scissor arm 16 and scissor arm 14 via two additional scissor arms 16A and 15A pivotable with the reclining-side scissor arm 17 connected. In this embodiment, the reclining scissor arm is located 16 spaced in front of the reclining side scissor arm 17. It gives This is an advantageous adjustment possibility of movement the backrest to different structures, so that the upholstery of the Back 1 and the seat 2 again in each position also in an advantageous manner so that no gap arises.

The motor 31 of the legrest adjustment drive is on the crossbar 40 hinged, his Stützenverstellspindel 33 is pivotable hinged a cross member 22A. The cross member 22A is between two Swing levers 43 and is connected to these. The pivot lever 43 are pivotally mounted on the side plates 4 and at their upper ends pivotally connected to the mounting brackets 20. When adjusting the Stützenverstellspindel 33, for example in Towards the foot end, this direction of movement is through the Swivel lever 43 vice versa, so that the mounting bracket 20 in the to move in the opposite direction. In the front area of the Mounting bracket 20, the support bracket 34 are coupled hinged and drive out the leg supports 3A, 3B out. The Leg supports 3A, 3B are thus indirectly via the movement of the Mounting bracket 20 adjusted. The advantage here is that the Cross spar 32 is eliminated and more space for retracting the Leg supports 3a, 3b arises.

10 shows an enlarged detail of the region X. as shown in FIG. 9, the coupling of mounting bracket 20 with Support bracket 34 via a bolt 44. The Support bracket 34 has an angled for this purpose Extension with a slot 34B, with the bolt 44 and thus connected to the mounting bracket 20. It's special advantageous to use a slot as thus essential lower driving forces required for leg rest adjustment are.

In Fig. 11 is a view of the section A - A of FIG. 10th shown. The elongated hole 34B is low in friction Embodiment, for example, a socket 34C provided. In this is the bolt 44, which also has a socket 34D, low-friction. Material of the sockets 34C, 34D is preferably plastic.

In an advantageous arrangement are Sitzbeschlaglenker 34A, Support bracket 34 and mounting bracket 20 in one Anlenkungspunkt by the bolt 44 pivotally against each other connected.

FIG. 12 shows a plan view of the fitting according to FIG. 9.

To facilitate assembly of the seat frame 2 on the mounting bracket 20 are in it several centering pins 18 and also round Screw holes 19 introduced. The seat frame can therefore with the Centering pin (18) inserted into matching centering holes and in Be held in position when the fixing screws through the Screw holes 19 are screwed.

The backrest frame and the side walls are made with templates pre-drilled or equipped with bolts or sockets, so that the backrest and the side boards are there without any further precise position be screwed.

To facilitate the assembly of the seat frame 2 are preferred and / or the armchair side walls 42, the mounting bracket and / or the Side boards 4 introduced into the centering pin 18, whereby these are held in matching holes and kept centered are screwed positionally accurate.

LIST OF REFERENCE NUMBERS

1

Backrest (backrest frame)

2

Seat (seat frame)

3

legrests

3A

legrests

3B

legrests

4

side boards

10

mounting plate

10B

Mounting plate with scissors joint

11

Engine to 1

12

Backrest crossbar for 11/1

12B

Backrest crossbar bent at the scissors joint

13

Adjusting spindle in 11 (drive link)

14

Backrest handlebars or arms

15, 15A

Backrest handlebars or arms

16, 16A

Backrest handlebars or arms

17

Backrest handlebars or arms

18

centering

19

screw holes

20

Mounting bracket for 2

20A

Bracket extension

20B

Mounting angle extension for scissor joints

22

Seat crossmember

22A

transverse spar

23

back hinge

24

Seat fitting handlebar rear

30

elbow

30A

Elbow to 3A

30B

Elbow to 3B

31

Motor for 3A, 3B

32

Crossbar for 31

33

Stützenverstellspindel in 31 (drive member)

34

Support bracket on the back

34A

Seat fitting handlebar front

34B

Long hole

34C

Rifle

34D

Rifle

35

Support bracket - scissor handlebar

36

Support bracket on the front

37

arm hinge

38

auxiliary link

40

Trusses between 4

41

Trusses between 4

42

Armchair side wall with armrest

43

Schenk lever

44

bolt

Claims (21)

1. A seat-recliner fitting for motor-driven adjustment of the inclination of a back rest (1) and motor-driven extension and retraction of a two-part leg support (3A, 3B), characterised in that the fitting is completely pre-assembled at the factory between two side plates (4) connected by cross-members (40, 41), a side wall (42) with an arm rest being fixed to each side plate; in that seat-fitting links (24, 34A) are directly or indirectly pivoted to each side plate (4) and are pivoted to an assembly bracket (20) for fixing a seat frame (2) and extending approximately along the length thereof, and the leg support parts (3A, 3B) are directly or indirectly pivoted to scissor support links (34 - 37) to form support fitting links which respectively bear the leg supports (3A, 3B) on angle pieces (30A, 30B) and an assembly plate (10, 10B) for holding a back rest frame (1) is directly or indirectly pivoted to the assembly bracket (20) and a transverse back rest member (12, 12B) is disposed between the assembly plates (10, 10B) on each side and a transverse seat member (22) is disposed between the assembly brackets (20) on each side and a drive element (13) of a back rest adjusting motor (11) extends between the transverse seat member (22) and the transverse back rest member (12, 12B) and a transverse scissor member (32) extends between the two scissor links (34, 35), and a drive element (33) of a leg-support drive motor (31) extends between the member (32) and one of the cross-members (40, 41) or the drive element (33) of the leg-support motor (31) extends between a cross-member (40) and a transverse member (22A) disposed between the assembly brackets (20).
2. A seat-recliner fitting according claim 1, characterised in that an extension (20B) is integrally formed on each assembly bracket (20) of the seat (2) and projects beyond the back of the seat (2) and to half way up its height and the assembly plate (10) of the back rest (1) is pivoted to its end region.
3. A seat-recliner fitting according claim 1, characterised in that an extension (20B) is integrally formed on each assembly bracket (20) of the seat (2) and extends downwards on the rear seat region and a scissor back rest link (14 - 17) is pivoted to it and extends backwards and upwards, where it is pivoted to an assembly plate (10B) fixed to the back rest (1).
4. A seat-recliner fitting according claim 3, characterised in that the transverse member (12B) is bent backwards and extends between the assembly plates (10B).
5. A seat-recliner fitting according claim 3 or 4, characterised in that the scissor back-rest links (14 - 17) are so disposed and constructed that upholstery on the back rest (1) is in contact with upholstery on the seat (2) at each inclination of the back rest, and the scissor back-rest links (14 - 17) and the assembly plate (10B) are covered by the upholstery.
6. A seat-recliner fitting according any of the preceding claims, characterised in that the drive elements (13, 33) of the motors (11, 31) are adjustment spindles.
7. A seat-recliner fitting according any of the preceding claims, characterised in that the scissor support links (34 - 37) when in the retracted state extend from the front seat region approximately to the floor, and the leg supports (3A, 3B) are spaced apart one behind the other so that the front leg support (3B) almost completely closes a front region under the seat (2).
8. A seat-recliner fitting according claim 7, characterised in that the scissor support links (34 - 37), when completely extended, respectively so hold the front angle piece (30B) in front of the seat (2) so that the front leg support (3B) is slightly inclined to and somewhat lower than the seat surface, and the seat-side angle piece (3A) is so pivoted via a side limb to the bottom front scissor link (36) and so pivoted via an auxiliary link (38) to the seat-side bottom scissor link (35) that the seat-side leg support (3A) mounted on the angle pieces (30A), when completely extended, is in line with the front leg support (3B).
9. A seat-recliner fitting according any of the preceding claims, characterised in that the seat-side scissor support links (34, 35) are disposed one above the other and the front scissor support links (36, 37) are disposed on each side of the rear links.
10. A seat-recliner fitting according any of the preceding claims, characterised in that the seat-side scissor support links (34, 35) are so disposed that in all positions they are separated by at least a finger's breadth.
11. A seat-recliner fitting according any of the preceding claims, characterised in that the outer front scissor support link (37) has a width such that in all positions it overlaps the inner scissor support link (36).
12. A seat-recliner fitting according any of the preceding claims, characterised in that the top seat-side support link (34), on the other side of its direct or indirect articulation to the side plate (4), extends further than the front seat fitting link (34A) up to the joint to the assembly bracket (20) and is shorter than the rear seat fitting link (24) and is such relative thereto that when the leg supports (3A, 3B) are extended the seat frame (2) is lower at the front and further to the rear than when the leg supports (3A, 3B) are retracted, and the seat frame (2) at the rear is approximately always at the same height when moved backwards and forwards on adjustment of the leg supports.
13. A seat-recliner fitting according any of the preceding claims, characterised in that the transverse member (22A) between the assembly brackets (20) is disposed on downwardly directed extensions of the assembly brackets (20) or on rocking levers (43) pivotable on the side plates (4).
14. A seat-recliner fitting according any of the preceding claims, characterised in that the support fitting links (34) are additionally pivotable on the assembly brackets (20).
15. A seat-recliner fitting according claim 14, characterised in that the support fitting links (34) on the assembly brackets (20) are pivotable at the points of articulation of the seat fitting links (34A).
16. A seat-recliner fitting according claim 14 or 15, characterised in that the support fitting links (34) are formed with slots (34B) at the points of articulation on the assembly brackets (20).
17. A seat-recliner fitting according claim 16, characterised in that the slots (34B) on the support fitting rods (34) have a low-friction construction.
18. A seat-recliner fitting according claim 17, characterised in that the slots (34B) have plastic bushes (34C) and the bolts (34) guided in the bushes (34C) are provided with a suitable plastic bush (34D).
19. A seat-recliner fitting according any of the preceding claims, characterised in that the scissor back-rest links (14 - 17) are multi-part scissors like a lazy tongs.
20. A seat-recliner fitting according any of the preceding claims, characterised in that the assembly brackets (20) on the seat-side angle limb and/or the side plates (4) comprise centring bolts (18) and screw holes (19), and the seat frame (2) and side walls (42) are adjusted in position and held and screwed in matching centring boreholes.
21. A seat-recliner fitting according any of the preceding claims, characterised in that the transverse members (12, 22, 22A, 32) and/or the cross-members (40, 41) are tubes which are held in boreholes and releasably or permanently connected.

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