EP1510152B1 - Mattress base with articulated backrest and headrest portions - Google Patents

Description

The invention relates to a mattress frame with the back part pivotable thereon and a head part hinged pivotably on the back part.

From the DE 20017 758 U1 a device for adjusting the back part and the head part of a reclining furniture is known in which the backrest and the head part is associated with each function as a four-bar linkage lever assembly functionally, each lever assembly is arranged in pairs in the lateral region. Each of the backrest associated lever assembly is equipped with a control cam, in which the associated end portion of an axle is mounted, which carries the head part. In the wood and valley of the backrest and the headboard is a traverse at an acute angle to the base frame of the device. When pivoting this cross member about a fixed axis, the control cam is first pivoted, being initially pivoted about the head part associated lever arrangement only the head part in an inclined position to the foot, wherein the head part shifts towards the head of the backrest. In this position, the traverse is approximately horizontal. Upon further pivoting of the traverse, the backrest is brought into an inclined position, wherein the inclination of the head part remains unchanged despite the further pivoting movement. In the swung-up end position of the backrest, the head part is again approximately in the plane of the Rückenlchen, that is, when the back part is pivoted to the end position, the head part is swung back.

At one of the FR-A-2798270 Known slatted frame is assigned to the headboard as a four-bar chain to be considered lever assembly functionally. In the starting position, a cross member is also inclined in this arrangement to the horizontal surfaces of the head part and the back part. When pivoting the traverse around a fixed axis, the head part is first brought into an inclined position to the back part, wherein this skew is maintained during further, common pivoting the head part and the back part. Two spring wooden strips arranged between the head part and the back part are counteracted during this movement pivoted the pivoting movement of the head part and the back part, so that no gap between the head part and the foot part is formed. Upon further pivoting of the head part and the foot part whose position remains unchanged, however, the two slats are pivoted opposite, so that they lie in the plane of the head part. When pivoting the back part in the end position, the head part and the two spring slats remains approximately in the position, so that the head part, the backrest and the two slats are in the final position in a plane.

1. 1. bei einem Hochschwenken des Rückenteils das Kopfteil zunächst mit gleichem oder zumindest nicht merklich vom Schwenkwinkel des Rückenteils abweichendem Schwenkwinkel mit hochgeschenkt wird. Mit anderen Worten soll das Kopfteil in diesem Anfangs-Schwenkbereich der Schwenkbewegung des Rückenteils bis zu einem Winkel von etwa 12° nicht voreilen, indem es seine Schwenkbewegung beginnt, bevor das Rückenteil sich in Bewegung setzt, oder indem es sich um einen größeren Winkel verschwenkt als das Rückenteil.
2. 2. das Kopfteil bis zu einem Schwenkwinkel des Rückenteils von etwa 30° diesem zunehmend um einen Schwenkwinkel von bis zu etwa 20° vorauseilt.
3. 3. das Kopfteil ab einem Schwenkwinkel des Rückenteils von etwa 50° die erreichte Voreilung gegenüber dem Rückenteil zumindest abzubauen beginnt.
4. 4. der im Bereich des Matratzenrahmens liegende Schwenkpunkt des Rückenteils mit zunehmendem Verschenken desselben in Richtung des Kopfbereiches des Matratzenrahmens verschoben wird und
5. 5. das Kopfteil mit zunehmendem Verschwenken gegenüber dem Rückenteil gegenüber diesem in Richtung des Kopfbereiches verschoben wird.

The object of the present invention has been made to connect a mattress frame, its back part and its head part by coupling links so inevitably adjustable together that

1. 1. at a pivoting of the back part, the head part is first with the same or at least not noticeable from the swing angle of the back deviating swivel angle with high. In other words, in this initial pivoting range, the headboard should not advance the pivotal movement of the back portion to an angle of about 12 degrees by starting its pivotal movement before the back portion begins to move or by pivoting through a greater angle than the back part.
2. 2. the head part progresses up to a pivoting angle of the back part of about 30 ° this increasingly by a pivot angle of up to about 20 °.
3. 3. The head part starts from a pivoting angle of the back part of about 50 °, the achieved overfeed towards the back part at least begins.
4. 4. The pivot point of the back part lying in the region of the mattress frame is displaced with increasing giving away in the direction of the head area of the mattress frame, and
5. 5. the head part is displaced with increasing pivoting relative to the back part relative to this in the direction of the head region.

In both prior art devices, it is not possible in a comfortable and pleasant for the user from the horizontal starting position the Head part and the back part to pivot at the same time, however, wherein the head part is brought forward in an inclined position to the back part.

The subtasks 1) to 3) take into account that, for example, with reflux problems loaded resting in the rest position usually require a slight lifting of the back part. For example, asthmatics should be in this initial swivel range to about 12 °, the headboard but not raised against the back. In a central pivoting range of the back part between about 12 ° and about 30 °, the head part, for example. To read against the back but clearly be swiveled by up to 20 ° in order to achieve a support of the head in a comfortable position. In contrast, the headboard at the steepest position of the back at about 64 °, for example, to eat again approximately in the pivoting position of the back part to be able to hold the head straight.

The subtasks 4) and 5) take into account the desire that when pivoting back part and headboard the mattress bending around a median plane should not be compressed or forced to move on the pivoting mattress frame sections, not even in the upper position, as usual, to protrude beyond the headboard. Even for a recumbent, this stretch pushing the mattress frame sections has proven to be pleasant.

The present invention solves the problems posed by the features of the main claim. In the main claim is of four-bar pairs and displacement device pairs of speech, because they are arranged in pairs on the right and left in the mattress frame. The four-joint pairs and displacement device pairs are each the same or mirror-image executed. Four-joints connected directly to the pivotable mattress frame sections have the advantage that they guide the mattress sections without play and prevent unintentional pivoting movements thereof. Four joints also have low wear and require no maintenance.

The movement connection between the central four-bar linkage of the invention for pivoting the back part and the other devices for displacing the back part and the displacement of the head part has the advantage that a continuous flow and bumpless transition of all movements is given, since all devices are always moved together. The fact that they cause due to their different length and the chosen arrangement of their articulation points different pivoting movements of their associated Matratzenrahmenteile, is in the nature of the matter and is of course intended.

In a preferred embodiment also provided for solving the subtask 4 device pair for moving the back part in the direction of the head end during its pivoting is designed as a four-bar linkage. Alternatively, this pair of devices can also be designed as dragged by handlebars, guided by sliders in scenes rocker arm. As drag lever here is the back part. With regard to the head part, the subtasks 4) and 5) can alternatively be achieved in that the back part and / or head part are designed as crank-arm-pulled, slide-guided drag levers. With regard to the head part, the subtask 3) can also be met by means of this embodiment.

The beginning and the course of the pivoting movements of the back part and the head part and their interdependence can be varied by changing the length of the coupling links of the four joints and the geometric arrangement of their joints within wide limits. In the case of the use of finger lever devices slots are used, in which the bolts of the joints are displaced. The oblong holes can be formed like a backdrop curves.

• Fig. 1 bis 5 die schematische Seitenansicht einer ersten Ausführungsform der Erfindung durch das dem Kopfende zugewandten Bereich eines Matratzenrahmens mit jeweils zunehmendem Winkel des Anhebens des Rückenteils;
• Fig. 6 und 7 eine alternative Vorrichtung zum Verschieben des Rückenteils;
• Fig. 8 und 9 eine weitere Vorrichtung zum Verschieben des Rückenteils;
• Fig. 10 bis 13 eine zweite Ausführungsform der Erfindung in Darstellung wie in den Fig.1 bis 5.

In the figures of the drawing embodiments of the invention are shown schematically. Show it

• Fig. 1 to 5 the schematic side view of a first embodiment of the invention by the head end region facing a mattress frame with each increasing angle of lifting of the back part;
• 6 and 7 an alternative device for moving the back part;
• 8 and 9 another device for moving the back part;
• Fig. 10 to 13 a second embodiment of the invention in illustration as in the Fig.1 to 5 ,

The FIGS. 1 to 5 and 10 to 13 show only the head end facing area of a total of the FIGS. 6 to 9 recognizable mattress frame 1, which usually consists of a rectangular frame of two longitudinal bars 2 and two connecting them cross struts 3. It contains several, partly pivotally mounted in it mattress frame parts, of which not shown here are a solid pelvic part, to which at the foot towards a pivotal leg portion and connect to this pivoting footboard. Shown are an adjoining the pelvic part to the head end 4, in the mattress frame 1 swung-up back part 5 and a pivotally mounted on this headboard 6. Back part 5 and head part 6 also consist of frame with longitudinal bars and cross struts.

At the mattress frame 1 and at its pivotal parts such as the back part 5 and the head part 6, not shown here, slats are arranged on which rests a mattress, also not shown.

On the mattress frame 1 a pivot shaft 8 is mounted in both sides attached to it shields 7, preferably by means of a only in FIG. 1 shown drive device of motor 9 and gear 10 is rotatable. By means of this pivot shaft 8 are described below four-joint pairs 11 for pivoting the back part 5, of four-bar linkages or Verlagerungsvorrichtungspaaren for pivoting and moving the head part 6 and four-bar pairs or adjusting devices for moving the back part 5 can be driven.

It is understood that the described four joints and displacement devices are each arranged identically left and right in the mattress frame, so that they are each addressed as pairs and their constituents in the plural.

Parallel to and in the vicinity of the longitudinal spars of the back part 5 and the head part 6, the first four-bar linkage pairs 11 for pivoting the back part 5 are arranged on both sides within the mattress frame 1. Each of these four-bar linkages has four coupling links, which are connected by four joints movable with each other. The Joints are preferably made of spigot or bolt-shaped shaft / hub connections whose axes are perpendicular to the plane of the drawings.

One of the joints on the indicated by a dotted line 12 base coupling member of the four-bar linkage 11 is formed by the pivot shaft 8, are attached to the second coupling members in the form of pivot levers 13 and pivoted. At the other joints 14 of the base coupling member 12, which also sit on the plate 7, the back part 5 is articulated as a coupling member. Pivot lever 13 and back part 5 are connected at their other ends by means of joints 15 and 16 by handlebar 17 as a fourth coupling member movable together. The joints 16 sit on the back part 5 arranged tabs 18. The elements 5, 12, 13 and 17 form the displaceable quadrangle of the first four-bar linkage eleventh

In the embodiment of the FIGS. 1 to 5 two second four-bar linkages 21 are arranged between the back part 5 and the head part 6 on both sides. Their virtual base-coupling members 22 are located between arranged on the back part 5 joints 16 of the link 17 and further arranged on the back part 5 joints 23. The movement initiating coupling members 24 are formed by extensions of the links 17 to joints 25 which are connected to the head part 6 on both sides carrying shields 26 sit. The third coupling links form links 27, which extend between the joints 23 and arranged on the shields 26 joints 28. The virtual fourth coupling member 29 finally lie between the joints 25 and 28th

As can be seen, the coupling links 22 and 29 cross over here. This results in that the pivot arches of the two real coupling links 24 and 28 are set opposite each other, the coupling link 24 thus "up around", the coupling member 28 "swings around". This shows that a variety of possibilities are offered for the functional dimensions of the coupling links and the geometric arrangement of their joints, which are variable depending on the desired mutual dependence of the pivoting movements of the back part 5 and the head part 6.

Upon rotation of the pivot shaft 8 by means of the motor 9 and the gear 10, the pivot lever 13 from its initial position in the lowered position of back part 5 and head part 6 according to FIG. 1 up in the in FIG. 2 shown Position turned. By connecting via the handlebar 17 and the back part 5 is also raised. As a result of the propriety between the pivot shaft 8 and the pivot point 14 of the back part 5 while the handlebars 17 are pivoted as part of the first four-bar linkage pairs 11 in the counterclockwise direction. Since the extensions 24 of these links 17 also form coupling links of the second four-bar linkage 21, in this case also the second four-bar linkage is pivoted in the sense that the head part 6 is increasingly - anticipatory - pivoted relative to the back part 5 and displaced in the direction of the head end 4.

The coupling members 17 of the first four-bar linkage 11 and the coupling links 24 of the second four-bar linkage 21 represent arms integral, double-armed lever 17/24. Thus, the two four-bar linkage pairs 11 and 21 are motion-connected.

The geometric arrangement of the coupling members of the four-bar linkage 11 and 21 and their pivot points is such that the high pivoting movement of the head portion 6 relative to the back portion 5 to a high pivot angle thereof of about 12 ° the pivoting of the back portion by not more than 5 ° , so not noticeably ahead. Only at a high pivot angle of the back part of about 30 ° ( FIG. 3 ) reaches the pivot angle of the head part relative to the back about 20 °. In this case, the head part 6 is already displaced substantially in the direction of the head end 4.

In a further upward pivoting of the back part 5 to an angle of about 56 ° ( FIG. 4 ) causes the recognizable from the drawing mutual position of the coupling members pivoting back of the head part 6 in almost flush with the back part 5 position. In this case, the head part 6 is still displaced further in the direction of the head end 4. In the outermost pivot position to about 65 ° ( FIG. 5 ) is even a pivoting back of the head part 6 behind the back part. 5

In order to achieve the desired displacement of the back part 5 during pivoting in the direction of the head end 4, third four-bar linkage pairs 30 are provided in a preferred embodiment. These can be formed by two links 31 and 32, which by means of joints 33 and the already introduced joints 14 fixed to the mattress frame 1 and with joints 35 and 36 in different Distance at the lower end of the back part 5 are articulated. Between the joints 14 and 33 is here the dash-dotted lines indicated base coupling member, while the links 31, 32 and the portion of the back portion 5 between the joints 35 and 36 form the other coupling members.

When swinging up the back part 5, these links 31 and 32 as from FIGS. 1 to 5 can be seen in turn pivoted so that they move the back in the direction of the head end 4 back.

This displacement of the back part 5 can alternatively be achieved by means of displacement devices, as disclosed in German Utility Model 299 05 092.0, to which reference is made. These devices will be described below.

In the in the in the FIGS. 6 and 7 reproduced device 37, the pivot shaft 8 is connected to a gear 38 which engages in a second, also rotatably mounted in the plate 7 gear 39 with preferably larger numbers of teeth. On this second gear 39 or on the shaft 5 lever 40 are fixed on both sides of the frame of the back part, which are connected via pivot pins 41 with the lower end of the back part 5.

When turning the pivot shaft 8 for pivoting the back part 5, the adjusting lever 40 from the in FIG. 6 shown position in the FIG. 7 rotated, whereby the back part 5 is displaced by the pivot pin 41 in the direction of the head end 4.

In the in the FIGS. 8 and 9 shown device 42 lever 43 are provided, which are mounted on the one hand in the plate 7, on the other hand connected to the back part 5 at its lower end via a pivot pin 41. In their central region, handlebars 44, which are offset relative to the pivoting shaft 8 and also articulated on the pivoting levers 13, act on these adjusting levers 43.

When pivoting the back part 5, the handlebars 44 pivot the adjusting lever 43 counterclockwise and move while the back part in Towards the head end 4.

For moving back part 5 and head part 6 in the direction of the head end 4 and for pivoting the head part relative to the back part, it is also possible advantageously to use pairs of displacement device 45 or 46 according to FIGS FIGS. 10 to 13 are used, which have moved by handlebars or by crank arms, guided at their end in scenes rocker arms. The swinging up of the back part 5 serves here already described above four-bar pair 11. It is understood that drag lever Verlagerongsvorrichtungen according to the FIGS. 10 to 13 with four-joint displacement devices of FIGS. 1 to 5 or with displacement devices of the FIGS. 6 to 9 can be combined.

The displacement device pair 45 for moving the back part 5 uses only the links 32, which are articulated with their joints 14 and 36 on the plate 7 and on the back part 5 here. At the inner end of the back part sliders are, for example. In the form of bolts 47 are arranged, which are stirred in parallel to the longitudinal direction of the mattress frame 1 scenes 48. The sliders can also be performed in rails with C-shaped cross-section. Sliders 48 or rails can also be bent when a certain path of movement of the back part 5 is desired.

The displacement device pair 46 for moving and pivoting the head part 6 here use the above-described extensions 24, which are connected with their terminal joints 25 with the head part 6 bearing shields 26, as the head part displacing crank arms. At the inner end of the shields 26 also bolt-like sliders 49 are provided, which are guided in curved scenes 50.

As from the motion sequential FIGS. 10 to 13 recognizable, pull the handlebar 32, the back part 5 when pivoting in the direction of the head end 4, the sliders 47 in the scenes 48, the back straight lead. Correspondingly, the crank arms 24 pull the shields 26 carrying the head part 6 in the direction of the head end 4. The functionally bent connecting links 50 guide the sliders 49 so that the head part 6 first moves in relation to the back part 5 according to FIG. FIG. 12 ), then swings backwards ( FIG. 13 ).

The scenes 50 are here arcuately down and then led back up and end in straight, inclined end pieces. But the scenes 50 can also be shaped differently to achieve other gradients of pivoting of the head part.

It is understood that four-joint displacement devices of FIGS. 1 to 5 with drag lever displacement devices according to the FIGS. 10 to 13 or with relocation devices FIGS. 6 to 9 can be combined.

LIST OF REFERENCE NUMBERS

1

mattress frame

2

longeron

3

crossmember

4

head

5

back

6

headboard

7

sign

8th

pivot shaft

9

engine

10

transmission

11

First four-joint pairs

12

Base-coupling element

13

pivoting lever

14

Joint on the base coupling link

15

Joint on the handlebar 17

16

Joint on the handlebar 17

17

handlebars

18

Lug for joint 16

19

20

21

Second four-joint pairs

22

Base-coupling element

23

Joint on the back part 5

24

Movement initiating coupling link

25

Joint on the shield

26

The headboard 6 bearing shield

27

handlebars

28

coupling member

29

coupling member

30

Third four-joint pairs

31

handlebars

32

handlebars

33

Joints on the mattress frame

34

Joints on the mattress frame

35

Joints on the back 5

36

Joints on the back 5

37

Displacement device back part

38

gear

39

gear

40

lever

41

pivot pin

42

Displacement device back part

43

lever

44

handlebars

45

Displacement device back part

46

Displacement device headboard

47

slide

48

scenery

49

slide

50

Curved backdrop

Claims (7)

1. Mattress frame (1) having a backrest part (5) mounted pivotably therein and able to be moved towards the head end (4) and a headrest part (6) mounted pivotably on the backrest part and able to be moved towards the head end (4), wherein

   - at least the backrest part (5) can be pivoted upwards by means of a pair of four-bar linkages (11),

   - the backrest part (5), while it is pivoted upwards, can be moved in the direction of the head end (4) of the mattress frame (1) by means of a pair of displacement devices (30, 37, 42, 45) connected in terms of movement to the four-bar linkages (11),

   - the headrest part (6), while the backrest part (5) is pivoted upwards, can be pivoted backwards and forwards with respect to the backrest part and moved in the direction of the head end (4) of the mattress frame (1) by means of a pair of displacement devices (21, 46) connected in terms of movement to the four-bar linkages (11).
2. Mattress frame (1) according to Claim 1, characterized in that at least one of the pairs of displacement devices (21, 30) consists of a further pair of four-bar linkages.
3. Mattress frame (1) according to Claim 1, characterized in that at least one of the pairs of displacement devices (45, 46) comprises drag levers (5, 26) pulled by links (32, 24), said drag levers being guided by means of slides (47, 49) in guides (48, 50).
4. Mattress frame (1) according to Claim 2, characterized in that in each case one link (17) of the four-bar linkages (11) moving the backrest part (5) has an extension (24) which forms a link of the pair of four-bar linkages (21) moving the headrest part (6).
5. Mattress frame (1) according to Claim 2, characterized in that the articulation points (16, 25; 23, 28) of the coupling members (24) or links (27) of the pairs of displacement devices (21) in the form of four-bar linkages are selected such that the pivot arcs of the coupling members (24) mounted pivotably on the backrest part (5) and causing the pairs of four-bar linkages (21) to move run in the opposite direction to the pivot arcs of the links (27) likewise mounted pivotably on the backrest part.
6. Mattress frame (1) according to either of Claims 2 and 3, characterized in that the pairs of displacement devices (21, 46) pivoting the headrest part (6) backwards and forwards and moving it towards the head end (4) are designed such that the headrest part (6) does not lead or does not perceptibly lead the pivoting movement of the backrest part (5) in an initial region of the pivoting upwards movement thereof up to a pivoting position of about 12°; increasingly leads the pivoting movement of the backrest part (5) by up to 30° in a central region of the pivoting upwards movement thereof up to a pivoting position of about 30° and, in an end region of the pivoting upwards movement of the backrest part (5) up to a pivoting position of about 60°, the lead achieved decreases to at least close to a position flush with the backrest part (5).
7. Mattress frame (1) according to Claim 6, characterized in that the pairs of displacement devices (21, 46) for the headrest part (6) guide the headrest part (6) into a hanging back position in relation to the backrest part (5) when the latter is in its maximum upwardly pivoted position.

Images