AT511841A4 - Seat / reclining furniture - Google Patents

Abstract

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 (4) has two hinged in the region of one end on the frame (2) in fixed bearings (9,10) and in the region of its other ends via a connecting arm (11) pivotally coupled pivot arms (7,8). To ensure a substantially gap-free movement of the backrest for the purpose of seat depth adjustment, 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 the upper (9) hinged (first) pivot arm (7) is inclined downwards in the basic position and the connecting arm (11) in the region of its coupling to this pivot arm (7) on the backrest (5) fixed support arm (12) upwards protrudes, wherein the maximum amount of the downward slope is about half the height (h) of the seat / lying cushion (3). The at the lower fixed bearing (10) hinged (second) pivot arm (8) can be connected to a locking device (13).

Description

P43933

Seat / Liegemöbei

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 in the region of its other ends via a Verbindungsann articulated coupled pivot arms.

Such a seat / reclining furniture is known from AT 506 805 Bl. 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 known from DE 20 2006 005 139 Ul in this sitting the backrest but not on the frame, but on the seat / reclining cushion and can take two end positions through the parallelogram steering, always one and the same side 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 seat / reclining furniture 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 are provided on the frame 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. 3 3 m *

• ·······

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 return the backrest to the basic position, it is necessary to form 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 Auslöseanschläge are provided at which abut against associated stops of the pawl in the two limit positions of the backrest for disengaging or locking 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 favorable if the second pivoting arm is connected to a pivoting spring anchored to the frame and stretched in each of the two limit positions of the backrest. 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 to the other limit position, experience the movement by the initially tensioned spring pivot support, the spring tension decreases approximately to the middle of the pivoting range and then increases again.

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,

1 is an inventive seat / reclining furniture with backrest in basic position,

2 is an enlargement of the parallelogram in the position shown in FIG. 1,

3 the seat / reclining furniture with located between the two limit positions backrest,

FIG. 4 shows the position of the parallelogram steering system associated with FIG. 3 in an enlarged view; FIG. 5 shows the seat / reclining furniture with the backrest in the end position;

6 shows 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 in the normal position and

Fig. 8 the associated to Fig. 7 position of the parallelogram steering in 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 initial position, the backrest 5 sits on the frame 2 (FIG. 1), its effective height corresponding to its 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 5

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 stops 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 pivot arm 7 is in the normal position of the backrest 5, in which it rests on the frame 2, as shown in Fig. 1 is inclined downwards, wherein the maximum extent of the downward inclination, ie about the height difference between the fixed bearing 9 and the coupling point of the connecting arm 11, approximately 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 can be seen in particular from Figures 2,4, 6,8, approximately the shape 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. 6 6

• * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * · «« ·

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 associated stops 23 of the pawl 16 in the two limit positions of the backrest 5 for Ent and. Snapping the nose 17 abut.

The second Schwenkarni 8 is connected to a frame 2 (or on the fitting plate 6) anchored in the two limit positions of the backrest 5 each tensioned pivot spring 24. The pivot spring 24 is fastened to the second pivot arm 8 on a retaining pin 25 which is located approximately in the middle between the two formed on the semicircular part 14 notches 15. Usually 5 Parallelogrammlenkungen 4 -all cases 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 on the frame 2 according to FIG. 1. The parallelogram steering 4 is in the position shown in FIG. 2 in a larger position. 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 passes into the intermediate position shown in FIG. 3, the parallelogram steering 4 assuming the position clearly visible in FIG. 4. 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 in the upper beam of the large Greek gamma (Γ) · The spring 24th is a little less excited. Due to the fact that the pivot arm 7 initially 7 7

· * · «» Φ • · * 4 4 ·

• * · ** ································································································································································································································································ extending movement of the support arm 12 and thus the backrest 5, since this pivoting range of the pivot arm 7 extends approximately tangentially to the pivoting circle around the fixed bearing 9.

In Fig. 5, the second limit position of the backrest 5, namely the end position is illustrated, and Fig. 6 shows in turn on an enlarged scale, the associated position of the parallelogram 4. The nose 17 of the pawl 16 is engaged in that notch 15, the from Connecting arm 11 is furthest away The position of the pin 20 in the two slots 18 and 19 is approximately identical to that shown in FIG. 1 and FIG. 2. The pivot spring 24 is in turn stretched more. Since the swivel arm 7 has left the tangential region of the swivel circle illustrated in FIGS. 3 and 4, the backrest 5 is moved toward the foot end of the seat / reclining furniture 1 after reaching the height h of the seat / reclining cushion 3, which ultimately leads to seat depth adjustment. In the limit position according to FIG. 5, the effective height of the backrest corresponds to its total height, since the backrest 5 rests entirely on the seat / lying cushion 3.

If the backrest 5 is to be returned to the other limit position, the basic position shown in FIG. 1, it must first be pulled forward in the direction of the foot end of the seat / reclining furniture 1. In this case, meets the trigger stop 22 of the pivot arm 8, which is the Verbindungsann 11 farthest on 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 - related on Fig. 8 - slightly obliquely pushed upwards, so that the two pins 20 abut in the slots 18 and 19 respectively at the lower end of the slots 18,19. 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 the Parallelogrammlenkimg 4 their highest voltage and thereby supports the return of the back pad 5 in its normal position. As soon as the backrest 5 again reaches the basic position shown in FIG. 1, the 8 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 its position shown in FIG. 8 - is pressed down obliquely until the pin 20 at the top End of the slot 19 abuts and the pin 20 in the slot 18 in the upper beam of the large Greek gamma (Γ) passes, so that the pawl spring 21 presses the pawl 16 toward the circular portion 14 of the pivot arm 8 and the nose 17 in the Basic position fixing notch 15 occurs.

As can be seen from FIGS. 1, 3, 5 and 7, no undesired gap occurs during the entire sequence of movement between the backrest 5 and the seat / lying cushion 3.

Claims (7)

Claims 1. seat / reclining furniture (1), with a frame (2) carrying a seat / reclining cushion (3) and one connected thereto via at least one parallelogram (4) in the basic position on the frame (2), between two limit positions variable-position backrest (5), wherein the parallelogram (4) articulated in the region of one end on the frame (2) in fixed bearings (9,10) and in the region of its other ends via a connecting arm (11) pivotally coupled pivot arms (7,8 ), 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) articulated (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) protrudes upwards, wob ei the maximum extent of the downward slope about half the height (h) of the seat / lying cushion (3) corresponds. 2. sitting / lying furniture according to claim 1, characterized in that the lower fixed bearing (10) hinged (second) pivot arm (8) with a latching device (13) is in communication. 3. sitting / lying furniture according to claim 2, characterized in that the latching device (13) on the lower fixed bearing (10) hinged, second pivot arm (8) with respect to this fixed bearing (10) has approximately kreisabschnittformigen part in the area the ends of 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). 4. 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 is angled in the region of the nose (17) about 90 ° in the direction of its other end, in the vicinity of which 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. 5. 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) Auslösungsanschläge (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). 6. seat / reclining furniture 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. 7. sitting / lying 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) trained notches (15) is located.