EP2572606A1 - Seat or lounger - Google Patents

Abstract

The seating/reclining furniture (1) has a seating/reclining cushion (3) that is supported on frame (2) through parallelogram steering (4) seated in reference position on the frame. The parallelogram steering has pivot arms (7,8) that are coupled with fixed bearings (9,10) through connecting arm (11). The fixed bearings are provided on the frame at different heights. The support arm (12) mounted on seat back is projected upwards corresponding to maximum extent of downward inclination of support arm to approximately half the height (h) of cushion.

Description

The invention relates to a seat / reclining furniture, with a seat / reclining support frame and connected thereto via at least one Parallelogrammlenkung, seated in the basic position on the frame, positionally adjustable between two limit positions backrest, wherein the Parallelogrammlenkung two in the region of one ends Has hinged on the frame in fixed bearings and hinged in the region of its other ends via a connecting arm pivot arms.

Such a seat / reclining furniture is from the AT 506 805 B 1 known. In this, an L-shaped backrest with unequal legs after pivoting can be rotated by 90 ° by means of the parallelogram steering in order to obtain a new seat depth after renewed lowering to the frame. The disadvantage here, however, are necessary for a trouble-free operation, strict compliance with dimensional ratios and the need to provide the backrest on both sides with a seat / couch pad corresponding surface texture. Moreover, during the 90 ° rotation, foreign objects can enter between the backrest and the frame, and there is also a risk of injury to the operator.

Another seat / reclining furniture with seat depth adjustment is from the DE 20 2006 005 139 U1 known. In this, the backrest sits but not on the frame, but on the seat / lying cushion and can take two end positions through the parallelogram, with always one and the same side of the backrest facing the user. A disadvantage is that the back cushion is raised during the pivoting operation of the parallelogram from the seat / reclining cushion, the greater the seat depth adjustment, so that in this phase objects or body parts between the underside of the backrest and the seat / lying cushion can be clamped.

The aim of the invention is therefore a SitzlLiebgemöbel in which the seat depth is variable without the occurrence of a significant gap between the backrest and frame, so as to withstand any risk of injury and movement inhibition.

This object is achieved with a seat / reclining furniture of the type mentioned in the present invention that the fixed bearing on the frame are provided at different heights, with the back of the seat / reclining facing lower bearing is lower, and that the hinged at the upper fixed bearing (first) Swivel arm is inclined downwards in the basic position and from the connecting arm in the region of its coupling to this pivot arm, a support arm attached to the backrest projects upwards, wherein the maximum extent of the downward inclination corresponds to about half the height of the seat / lying cushion.

By the struck positional relationships of the bearing, the downward inclination of the upper (first) pivot arm in the basic position in the extent of half seat / reclining cushion height and by attaching the backrest to a support arm which projects from the connecting arm of the two pivot arms in the region of the movable bearing of the first pivot arm upwards When the seat depth is changed, the backrest initially moves from the basic position about the seat / reclining seat height substantially vertically upwards and only toward the foot end of the seat / reclining furniture, whereby hardly any gap occurs during the entire movement between the seat / reclining cushion and the backrest , As a result, any pinching of objects or body parts is largely prevented. By the measures taken, there is another advantage, namely that the effective backrest height is lower in the home position than in the preferred end position. Because in the basic position, the furniture is usually used more for lying, the backrest is actually no Lehnfunktion, whereas the furniture is used in the preferred end position of the backrest mainly for sitting with possibly horizontal legs, but with approximately upright upper body, which is why in this position a (around the seat / reclining cushion height) higher effective backrest height is beneficial.

In order to secure the limit positions of the backrest, it is expedient if the articulated at the lower fixed bearing (second) arm is in communication with a locking device. This is preferably designed so that it has on the hinged at the lower bearing, the second pivot arm with respect to this bearing approximately circular section-shaped part which is provided in the region of the ends of its circumference with two the limit positions of the back rest defining notches on an am Frame movably mounted pawl are adapted.

In order to be able to return the backrest to the basic position, it is necessary to make the latching device releasable. This is achieved in accordance with the invention in that the pawl has at one end of the shape of the notches corresponding, projecting nose and extending in the direction of a first slot, which is in the nose approximately 90 ° in the direction of her Angled at the other end, in the vicinity of another, approximately in the direction of the angled portion of the first slot extending, second slot is that both slots are interspersed with a pin attached to the frame and that on the opposite side of the nose of the latch the pawl is provided in the direction of the second pivot arm oppressive, supported on the frame pawl spring. Namely, the pawl is brought into a position in which the second slot abuts with its the first, angled slot end facing away from the associated pin, so is the first slot passing through pin in its angled portion, whereby the nose penetrate into any notch can.

In many cases, a substantially automatic release and latching of the locking device is desired. This can be achieved with a preferred embodiment in that on both sides of the notches at the ends of the circular portion portion of the second pivot arm Auslösungsanschläge are provided at which abut against associated attacks the pawl in the two limit positions of the backrest for disengaging or snapping the nose.

To facilitate starting from each of the two limit positions of the backrest, the movement of the pivot arms in the other limit position and to support, it is advantageous if the second pivot arm is connected to a seated on the frame, in each of the two limit positions of the backrest tensioned pivoting spring. To achieve this, the pivot spring may be mounted on the second pivot arm on a retaining pin which is located approximately in the middle between the two formed on the circular portion portion notches. As soon as in this construction the backrest is moved into the respective other limit position, the movement is supported by the initially tensioned pivot spring support, wherein the spring tension decreases approximately to the middle of the pivoting range and then increases again.

• Fig. 1 ein erfindungsgemäßes Sitz/Liegemöbel mit Rückenlehne in Grundstellung,
• Fig. 2 eine Vergrößerung der Parallelogrammlenkung in der Stellung gemäß Fig. 1,
• Fig. 3 das Sitz/Liegemöbel mit zwischen den beiden Grenzstellungen befindlicher Rückenlehne,
• Fig. 4 die zu Fig. 3 zugehörige Stellung der Parallelogrammlenkung in Vergrößerung,
• Fig. 5 das Sitz/Liegemöbel mit in Endposition befindlicher Rückenlehne,
• Fig. 6 die Position der Parallelogrammlenkung gemäß Fig. 5 in vergrößerter Darstellung,
• Fig. 7 das Sitz/Liegemöbel am Beginn der Rückführung der Rückenlehne in die Grundstellung und
• Fig. 8 die zu Fig. 7 zugehörige Stellung der Parallelogrammlenkung in vergrößertem Maßstab.

The invention will be explained in more detail below with reference to an exemplary embodiment illustrated in the drawings. They show, in schematic view in each case,

• Fig. 1 an inventive seat / reclining furniture with backrest in basic position,
• Fig. 2 an enlargement of the parallelogram steering in the position according to Fig. 1 .
• Fig. 3 the seat / reclining furniture with the backrest between the two limit positions,
• Fig. 4 the too Fig. 3 associated position of the parallelogram steering in magnification,
• Fig. 5 the seat / reclining furniture with the backrest in the end position,
• Fig. 6 the position of the parallelogram steering according to Fig. 5 in an enlarged view,
• Fig. 7 the seat / reclining furniture at the beginning of the return of the backrest to the basic position and
• Fig. 8 the too Fig. 7 Associated position of the parallelogram steering on an enlarged scale.

The seat / reclining furniture 1 according to the invention comprises a frame 2, which carries a seat / reclining cushion 3 and is connected via a parallelogram 4 with a backrest 5. In the illustrated embodiment, the Parallelogrammlenkung is mounted entirely on a fitting plate 6, which in turn is attached to the frame 2. In the basic position, the backrest 5 sits on the frame 2 ( Fig. 1 ), whereby their effective height corresponds to their total height reduced by the height h of the seat / lying cushion 3. The parallelogram steering 4 has two pivot arms, an upper, first pivot arm 7 and a lower, second pivot arm 8. The upper, first Swing arm 7 is articulated on the frame 2 (or on the fitting plate 6) in an upper, front bearing 9, whereas the lower, second pivot arm 8 in a lower, rear fixed bearing 10 on the frame 2 (or on the fitting plate 6) pivotally is stored. The two pivot arms 7, 8 are articulated in the region of their fixed bearings 9, 10 opposite ends via a connecting arm 11. From the connecting arm 11 is in the range of its coupling to the pivot arm 7, a support arm 12 from above, on which the backrest 5 is attached. The swivel arm 7 is in the basic position of the backrest 5, in which it rests on the frame 2, as from Fig. 1 obliquely inclined downwards, wherein the maximum amount of the downward slope, ie about the height difference between the fixed bearing 9 and the coupling point of the connecting arm 11, about half the height h of the seat / lying cushion 3 corresponds (see Fig. 2 ).

The hinged at the bottom, rear bearing 10, second pivot arm 8 is connected to a locking device 13 in connection. This points to the hinged at the lower, rear bearing 10, the second pivot arm 8 with respect to the fixed bearing 10 approximately circular portion 14 which is provided in the region of the ends of its circumference with two the limit positions of the backrest 5 defining notches 15, the a on the frame 2 (or on the fitting plate 6) movably mounted pawl 16 are adjusted. The pawl 16 has at its one end to the shape of the notches 15 corresponding projecting nose 17. In the direction of the nose 17 extends a first slot 18 which is angled in the region of the nose 17 about 90 ° in the direction of its other end. The slot 18 therefore has, as in particular from the Figures 2 . 4 . 6 . 8th it can be seen in the form of a large Greek gamma (Γ). In the vicinity of the nose 17 opposite end of the pawl 16, a second slot 19 is formed which extends approximately in the direction of the angled portion of the first elongated hole 18, ie in the direction of the vertical bar of the Greek gamma (Γ). Both elongated holes 18, 19 are each penetrated by a pin 20 fastened to the frame 2 (or to the fitting plate 6). On the opposite side of the nose 17 of the pawl 16 a supported on the frame 2 pawl spring 21 is provided, which presses the pawl 16 in the direction of the second pivot arm 8.

On both sides of the notches 15 8 release stops 22 are provided at the ends of the circular portion 14 of the second pivot arm at which abut against associated stops 23 of the pawl 16 in the two limit positions of the backrest 5 for disengaging or snapping the nose 17.

The second pivot arm 8 is connected to a on the frame 2 (or on the fitting plate 6) anchored in the two limit positions of the backrest 5 respectively tensioned spring 24 pivot. The pivot spring 24 is fastened on the second pivot arm 8 to cinem holding pin 25, which is located approximately in the middle between the two formed on the semicircular portion 14 notches 15.

Usually 5 Parallelogrammlenkungen 4 - at most, each mounted on a fitting plate 6 - provided on both sides of the backrest. These can be connected to each other for synchronization of the movement of the two Parallelogrammlenkungen 4 via a crossbeam 26.

In the basic position of the backrest 5 this rests according to Fig. 1 on the frame 2. The parallelogram 4 is located in the in Fig. 2 Larger position shown. The pivot arm 7 is inclined downwards to the rear, wherein the maximum extent of the inclination corresponds to approximately half the height h of the seat / lying cushion 3. The nose 17 of the pawl 16 is engaged in that notch 15, which is closest to the connecting arm 11. The slot 19 of the pawl 16 rests with its upper end on the pin 20, whereas the pin 20 located in the slot 18 is located in the upper beam of the large Greek gamma (Γ). The pivot spring 24 is tensioned.

If the backrest 5 is slightly raised or pulled forward, it enters the in Fig. 3 illustrated intermediate position, wherein the parallelogram 4 from the Fig. 4 clearly apparent position occupies. The nose 17 of the pawl 16 slides over the outer circumference of the circular portion 14 of the pivot arm 8 in consequence of the contact pressure of the pawl spring 21. The pin 20 in the slot 18 is still located in the upper beam of the large Greek gamma (Γ). The spring 24 is slightly less tensioned. Due to the fact that the swivel arm 7 initially approximately at half the height h of the seat / reclining cushion 3 is inclined downwards, approximately up to an upward inclination to the same extent approximately a perpendicular upward movement of the support arm 12 and thus the backrest 5, since this pivoting range of the pivot arm 7 approximately tangential to Pivot circle runs around the fixed bearing 9.

In Fig. 5 is the second limit position of the backrest 5, namely the end position, illustrated, and Fig. 6 again shows in an enlarged scale, the associated position of the parallelogram 4 The nose 17 of the pawl 16 is engaged in that notch 15, which is far away from the connecting arm 11. The position of the pins 20 in the two slots 18 and 19 is approximately identical to that according to Fig. 1 respectively. Fig. 2 , The pivot spring 24 is in turn more tense. Since the swivel arm 7 in Fig. 3 and 4 illustrated has left tangential range of the pivoting circuit, the backrest 5 is moved after reaching the height h of the seat / reclining cushion 3 toward the foot of the seat / reclining furniture 1, which ultimately comes to seat depth adjustment. In the limit position according to Fig. 5 corresponds to the effective height of the backrest of their total height, since the backrest 5 rests entirely on the seat / lying cushion 3.

If the backrest 5 again in the other limit position, the in Fig. 1 shown basic position to be returned, it must first be pulled slightly towards the foot of the seat / reclining furniture 1 forward. In this case, the trigger stop 22 of the pivot arm 8, which is the farthest from the connecting arm 11, hits the associated stop 23 of the pawl 16, whereby the nose 17 exits from the end position of the backrest 5 defining notch 15. At the same time thereby the pawl 16 - based on Fig. 8 - Slid slightly upwards so that the two pins 20 in the slots 18 and 19 respectively at the lower end of the slots 18, 19 abut. As a result, the pawl 16 is unlocked and remains due to the pressure of the pawl spring 21 in this unlocked position. The pivot spring 24 reaches in this position of the parallelogram 4 their highest voltage and thereby supports the return of the back pad 5 in its normal position. Once the backrest 5 back in Fig. 1 reached shown basic position, the closest to the connecting arm 11 hits Trigger stop 22 of the swing arm 8 on the nose 17 of the pawl 16 nearest stop 23, so that the pawl 16 - based on Fig. 2 and starting from their position according to Fig. 8 - Is pressed obliquely down until the pin 20 abuts the upper end of the slot 19 and the pin 20 passes in the slot 18 in the upper beam of the large Greek gamma (Γ), so that the pawl spring 21, the pawl 16 toward the circular section Part 14 of the swing arm 8 presses and the nose 17 enters the basic position fixing notch 15.

How out Fig. 1 . 3 . 5 and 7 it can be seen, occurs during the entire movement sequence between the backrest 5 and the seat / couch pad 3 no unwanted gap.

Claims (7)

Sitting / lying furniture (1), with a seat / couch pad (3) carrying frame (2) and one with this at least one Parallelogrammlenkung (4) connected, in the basic position on the frame (2) seated, positionally adjustable between two limit positions backrest ( 5), wherein the parallelogram guide (4) has two swivel arms (7, 8) articulated in the region of their one ends on the frame (2) in fixed bearings (9, 10) and articulated in the region of their other ends via a connecting arm (11), characterized in that the fixed bearing (9,10) on the frame (2) are provided at different heights, wherein the back of the seat / reclining furniture (1) facing fixed bearing (10) is lower, and that at the upper fixed bearing (9) hinged (first) pivot arm (7) is inclined downwards in the basic position and from the connecting arm (11) in the region of its coupling to this pivot arm (7) on the backrest (5) fixed support arm (12) projects upwards, wherein the maximum extent of the downward slope about half the height (h) of the seat / lying cushion (3) corresponds. Sitting / lying furniture according to claim 1, characterized in that the lower fixed bearing (10) hinged (second) pivot arm (8) with a locking device (13) is in communication. Seat / reclining furniture according to claim 2, characterized in that the latching device (13) at the lower fixed bearing (10) hinged, second pivot arm (8) with respect to this fixed bearing (10) has approximately circular portion which in the region of the ends its circumference with two the limit positions of the backrest (5) defining notches (15) is provided, which are adapted to a on the frame (2) movably mounted pawl (16). Sitting / lying furniture according to claim 3, characterized in that the pawl (16) at its one end of the shape of the notches (15) corresponding projecting nose (17) and extending in the direction thereof, first slot (18) which in the region of the nose (17) is angled approximately 90 ° towards its other end, in the vicinity of another, approximately in the direction of the angled portion of the first Langloches (18) extending, second slot (19) is that both slots (18,19) are penetrated by one on the frame (2) fixed pin (20) and that on the nose (17) opposite side of the pawl (18) 16) a pawl (16) in the direction of the second pivot arm (8) oppressive, on the frame (2) supported pawl spring (21) is provided. Seat / reclining furniture according to claim 4, characterized in that on both sides of the notches (15) at the ends of the circular portion portion (14) of the second pivot arm (8) Ausiöseanschiäge (22) are provided at which associated stops (23) of the pawl (16 ) abut in the two limit positions of the backrest (5) for disengaging or locking the nose (17). SitzlLiebgemöbel according to one of claims 1 to 5, characterized in that the second pivot arm (8) with a on the frame (2) anchored, in the two limit positions of the backrest (5) respectively tensioned pivot spring (24) is connected. Seat / reclining furniture according to claim 6, characterized in that the pivot spring (24) on the second pivot arm (8) on a retaining pin (25) is fixed, which is approximately in the middle between the two on the circular portion portion (14) formed notches (15).

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