EP1903916B1 - Folding bed with scissors-type lifting arrangement - Google Patents

Abstract

The invention relates to a folding bed which is covered with a mattress (9) and comprises a head frame, back frame and foot frame (8, 7, 6) which are connected to one another in an articulated manner and are arranged in a collapsed state in a basic frame (1) or box such that they can be raised and lowered by means of a lifting mechanism (4), in which case the lifting mechanism (4) comprises scissors-type lifting arrangements which are provided on both sides of the head frame (8), are spring-loaded for lifting action, and have their top ends articulated on the end sides of the head frame (8), and that the first scissors arm (47) is articulated, at the top end, on a short block link (43) at the back-part head-frame end at an articulation (44) on which acts a link plate (42) which is connected in an articulated manner to a control arm (41) and is connected to a spacing head-frame connector (20) of the head frame (8) and of the back frame (7). Supporting legs and catches secure the end positions; claddings prevent access to movable parts and springs.

Description

The invention relates to a folding lounger, which is covered with a mattress and which consists of a head, back and Fußrahmen, which are hinged together and folded with a Hubbeschlag in a base frame or box are arranged raised and lowered, wherein the Hubbeschlag arranged on both sides of the head frame lifting spring-loaded scissors, which are each hinged at the bottom with a first scissor arm on the base frame and are mounted horizontally displaceable with a second scissor arm, which is hinged endendig end to the head frame.

Such known Faltliegen usually have each held on both sides of the base frame four-bar linkages that require tilting the deck when raising and lowering and therefore require considerable space in and around the base frame around.

Out GB 769 599 A a folding lounger of the type mentioned is known.

It is an object of the invention to provide a secure lifting and folding fitting with a fixed mattress, which is extremely compact stowage in the base frame.

The solution is that the first scissor arm is hinged at the top to a short blocking link at the rear part-side head frame end in a hinge which is engaged by a tab articulated to a control arm connected to a spacer head frame connector of the head frame and back frame is and is arranged so that when the head frame connector is spent in a horizontal lying position, the blocking link is in a dead position of the scissors link, and at angled Position of the connector of the blocking link is led out of the dead position, so that the Hubbeschlag keeps the head frame lowered.

Advantageous embodiments are specified in the subclaims.

The blocking link has such a length that at a pivoting about 180 °, the scissors between the upper position in which the bed is used, and the lower retracted position is adjusted. Correspondingly longer is the control arm, which controls the full stroke movement by pivoting about 90 °. The horizontal traction component secures the locking position of the blocking link.

The distance-maintaining connector between the head frame and the back frame has a length which corresponds to about twice the thickness of the mattress, which is folded when lowering the lounger.

Likewise, there is a spacer-holding another connector between the back frame and the foot frame, which, however, is much shorter, since the mattress is guided around this connection outside.

In order to ensure a uniform folding of the three frames, the two connectors are connected to a control rod so that the two frame joint assemblies each form approximately the same angle. For this purpose, the control rod is articulated at the two connectors spaced from the joint of the back frame, so that a controlling four-bar linkage is formed.

The four-bar linkage is preferably formed such that in the folded state, the joint of the control rod on the Fußrahmenverbinder the connecting line between the adjacent joint of the Fußrahmenverbinders on the back frame to the other joint of the control rod passes through, creating a Unfolding is prevented by the pressure of the compressed mattress areas. Only lifting the foot part releases the lock by moving the hinge on the foot frame connector back over that line, tightening the control rod.

The folding of the connectors is advantageously supported by a spring biased between the back frame and the head frame connector.

The mattress is advantageously held at the head and foot with an envelope in an undercut groove profile, in particular on the head and foot frame, by a rod is inserted into the impact, whose diameter is greater than the Nutaustrittsweite. In this way, the mattress or its supporting clothing when folding the frame always remains in the frame levels and covers the fittings, such as springs, control rods, scissors and support legs from above. Side of the frame, only the hinge pin heads and the connector are accessible, so that there is no risk of crushing or crushing the operator. The scissor arms and the locking mechanism are blocked in the lying position of the bed and thus secured. The folding and unfolding of the frame is effected by attacking and lifting at the free end of the foot, so that no risk of collision with the base frame and the scissors occurs.

At the foot and the head frame connector support frames are arranged, each consisting of two legs and a cross strut. On the head frame connector, the legs are connected so that they lie automatically when folding between the head and back frame. The fußendseitigen legs are either firmly connected to the frame or pivotally mounted in rod ends on the Fußrahmen, with two hinge pins are guided in an angular backdrop to a backdrop corner. The bolts are mounted spaced apart from the standing leg, and the legs of the gate are slightly longer than the extension of the spaced Bolt, so that in each case in the angled and the parallel end position of the legs to the foot frame is a safeguard against folding away at lateral load. The safety is greater, the higher the load on the frame. When lifting the foot end of the lounger, the legs lower from the security position, so that they can be easily pivoted by hand in the hammered parallel position. The folding and unfolding of the support frame is advantageously done with raised foot frame. In the parallel position of the legs to the foot frame there is a free space between them, so that there is no risk of jamming.

The entire assembly is completely safe in all details and in all folding operations and avoids the risk of crushing fingers and hands by maintaining minimum distances between the moving parts. There is also no uncontrolled entry or exit and no risk of shearing in the joints. In the unfolded lying position, the mattress is surmounted by no frame parts, so that there is no risk of impact for a racket. All parts are in a fixed position with each other when the couch is loaded by persons alternately.

In a further embodiment, the lounger on a base frame, in the side frame in each case below the scissors are articulated. The two side frames are connected to each other by truss rods. The frames are made of angle material, in the vertical leg hooks for attaching upholstered armrests, a front panel and a backrest are introduced. The two Fußendseitigen legs fit with folded couch between the side frames and are on the inside to the front truss rod. Thus, the folded frame has a firm footing there.

To further increase the stability of the frame in the unfolded state is on both sides between the vertical fußendseitigen side rail of the side frame and the an angle-shaped or boomerang-shaped support angle hinged on both sides of the back end of the back frame, which supports the back frame on a lying height, as well as the legs do that.

The support bracket has an eye towards the scissors courtesy, in which the scissor spring is hooked, which is connected at the head end side with the there articulated scissor arm. Thus, the scissors spring holds not only the scissors and the support bracket in the lying position.

At the head end of the base supports are arranged on which the head frame is supported in the folded state. Thus, this position is supported by the legs at the other end stable and independent of the thickness of the cushion pads, which contributes to safety.

Furthermore, each foot is an elastic latching fork arranged on both sides of the foot frame, which surrounds a cross strut of the back frame in the folded state and thus secures the state against self-opening. Furthermore, a catch to the side frame is provided at the foot frame end.

As a further security measure, the folding of the foot frame to the back frame is braked on both sides in each case by a damper which is articulated on the one hand to the foot frame and on the other hand to the foot frame connector.

The head and Fußrahmenverbinder are box-shaped with caps and close the articular fields and the mutually displaceable and pivoting hinge parts to the outside.

In an advantageous embodiment, the Fußrahmenverbinder is made as a multifunctional part of plastic, are formed in the bearing eyes, lever projections and a leg connecting pin and locking recesses for a flap.

The attached backrest is advantageously hollow, so that it can be used to accommodate blankets and pillows. Through a flap, which extends in the back area, the storage space is easily accessible.

Fig. 1

zeigt eine perspektivische Gesamtansicht der Faltliege entfaltet;

Fig. 2

zeigt den Faltbeschlag eingefaltet in Seitenansicht;

Fig. 3

zeigt die Hubschere beim Anheben in Seitenansicht;

Fig. 4

zeigt die Hubschere in Höchstlage in Seitenansicht;

Fig. 5

zeigt den Faltbeschlag eingefaltet in Seitenansicht mit Detailausschnitt eines Rahmenverbinders;

Fig. 6

zeigt den Faltbeschlag halb gefaltet in Seitenansicht mit Detail des Rahmenverbinders;

Fig. 7

zeigt den Faltbeschlag gestreckt in Seitenansicht mit Detail eines Rahmenverbinders;

Fig. 8

zeigt eine Perpektiv-Explosionsdarstellung einer Matratzenbefestigung;

Fig. 9

zeigt eine Seitenansicht zu Fig. 8 im Detail;

Fig. 10-12

zeigen das Fußende mit dem Stützgestell in drei Schwenklagen;

Fig. 13

zeigt die ausgefaltete Liege einer Variante an einer Seite perspektivisch vom Fußende aus;

Fig. 14

zeigt die eingefaltete Liege zu Fig. 13 perspektivisch an einer Seite vom Fußende aus;

Fig. 15+16

zeigen jeweils eine Ecke perspektivisch bei fast eingefaltetem bzw. eingefaltetem Rahmen;

Fig. 17

zeigt eine schräge Innenansicht eines Verbinders mit Verkleidung;

Fig. 18

zeigt ein Verbinderstück in Perspektive;

Fig. 19+20

zeigen den Fußrahmenverbinder mit Bein bei auf- und eingefaltetem Rahmen;

Fig. 21+22

zeigen perspektivische Seitenansichten auf- und eingefaltet vom Kopfende her;

Fig. 23-25

zeigen Blendstücke der Rahmenverbinder;

Fig. 26

zeigt eine eingefaltete Liege mit Rückenlehne bei abgenommener Armlehne.

Advantageous embodiments are in the Fig. 1 to 26 shown.

Fig. 1

shows an overall perspective view of the folding lounger unfolded;

Fig. 2

shows the folding fitting folded in side view;

Fig. 3

shows the scissors when lifting in side view;

Fig. 4

shows the scissors in maximum position in side view;

Fig. 5

shows the folding fitting folded in side view with detail of a frame connector;

Fig. 6

shows the folding fitting half folded in side view with detail of the frame connector;

Fig. 7

shows the folding fitting stretched in side view with detail of a frame connector;

Fig. 8

shows a perspective exploded view of a mattress attachment;

Fig. 9

shows a side view Fig. 8 in detail;

Fig. 10-12

show the foot with the support frame in three pivoting positions;

Fig. 13

shows the unfolded couch of a variant on one side in perspective from the foot end;

Fig. 14

shows the folded bed Fig. 13 in perspective on one side from the foot end;

Fig. 15 + 16

each show a corner in perspective at almost folded or folded frame;

Fig. 17

shows an oblique interior view of a connector with cladding;

Fig. 18

shows a connector piece in perspective;

Fig. 19 + 20

show the leg frame connector with leg up and folded in frame;

Fig. 21 + 22

show perspective side views on and folded from the head end ago;

Fig. 23-25

show blanks of the frame connector;

Fig. 26

shows a folded lounger with backrest with armrest removed.

Fig. 1 shows a perspective view of the unfolded couch, which consists of the head frame 8, the back frame 7 and the foot frame 6, which are hinged together and covered with a mattress 9. The head frame is supported on a scissors 4, which is mounted in a base frame 1. Folding fittings and Hubbeschläge are each arranged symmetrically on both sides of the longitudinal axis. Support frame 3 with two legs 33, 33A and a transverse strut 29, 29A are respectively arranged between the back frame 7 and at the foot end.

Fig. 2 shows the folding fitting folded in side view without mattress. It can be seen that in each case between the head frame 8 and the back frame 7 is a head frame connector 20, and between the back frame 7 and the foot frame 6, a Fußrahmenverbinder 21 is arranged hingedly connected. These connectors 20, 21 are placed approximately vertically when folded couch. On the foot frame 6, the folded support frame with the legs 33 and the Fußrahmenverbinder 21, the further support frame with the legs 33A is arranged.

The fully folded scissors consists essentially of the scissor arms 47, 48 which are connected in the scissors joint 51. At the lower end of the first scissor arm 47 is the joint 50, with which the scissors is mounted on the base frame.
The second scissor arm 48 is articulated on a slider 56, which is guided horizontally displaceable in the base frame.

Fig. 3 shows a side view of partially raised scissors. Between the head end of the head frame 8 in the eyelet 54 and the first scissor arm 47 in the eyelet 55 a tension spring 53 is tensioned, which provides a lifting force as a counterforce to the weight of the lounger and thereby supports the deployment of the lounger. The second scissor arm 48 is articulated to the head frame 8 with a hinge 52 at the head end, and the first scissor arm 47 is articulated in the hinge 44 by means of a tab 42 in the hinge 45 on a short control arm 41 fixedly connected to the head frame connector 20 in the hinge 49 is pivotally connected to the head frame 8. In addition, at the upper end of the first scissor arm 47 and set back from the joint 49, a blocking link 43 is articulated in the joints 44, 46, so that the joints 49, 46, 44, 45 form a four-bar linkage.

As Fig. 4 shows, is located in the upper position of the scissor locking block 43 by a stop approximately parallel to the head frame 8 and thereby the joint 44 in a blockade position above the line connecting the joints 46, 50. The load O is unable to release the blockade; In addition, the spring 53 acts in the blocking direction. Only a lifting of the back frame 7 and thus a revving towards M, Fig. 3 , the head part connector 20 solves the blockage, since the hinge 46 of the blocking lever 43 on the head part frame 8 above the joints 44, 45 of the tab 42, which is driven by the control arm 41.

Fig. 5 shows the folded state of the frame 6, 7, 8 in an occupancy with a mattress 9. Left is a enlarged detail view of the header connector 20 shown, which is connected in the joints 17 and 15 with the head frame 8 and the back frame 7. In addition, a tension spring 19 engages in the eyelets 16, 14 between the connector 20 and the back frame 7 in the closing direction. The connector 20 creates a distance between the two frames 8, 7 which holds space for the folded mattress there.

The Fußrahmenverbinder 21, which connects the foot frame 6 and the back frame 7 slightly spaced in the joints 10, 11, is so long that a jamming of fingers between them is excluded.

Approximately parallel to the back frame 7, a control rod 22 is articulated in the joint 13 on the head part connector 20 and in the joint 12 on a short arm 21A on the foot part connector 21. The connecting line or joints 11, 13 is in the shown folded position above the joint 12, whereby this position is maintained against a mattress back pressure T. Only a pressure in the direction of C on the foot of the couch brings the joint 12 over the dead center, so that thereafter lifting by a movement in the direction F initiates further deployment, which is supported by the spring 19 and the control rod 22, since this in Joint 13 offset to the folding joint 15 attacks.

Further details of the folding movements of the frame and its connector shows Fig. 6 to the right is a partial enlargement of the connector 20 is shown.

Fig. 7 also shows with an enlarged detail of the header connector 20, the frame 6 -8 in the extended lying position. Apart from the frame and its connectors as well as the heads of the joints, no fittings are free at the sides. The spring 19 and the control rod 22 are frame inside, so that there is no risk of trapping or otherwise injury. At the overlapping areas of the frame with the connectors abutment areas are formed, so that the joints are not on the Stretch position can be moved. Only a lifting of the foot end in the direction A leads the folding in accordance with the buckling shape Fig. 5 one.

8 and 9 show in a partial exploded view or in cross-section the holder of the mattress on a mattress carrier cloth 2 or with a mattress collar. This or this has an impact 24 on the edge, in which a fixing rod 26 is inserted. Both together are inserted with loose fit in a cylindrically undercut groove 27, wherein the free end of the impact 24, the groove 27 passes under the mattress support cloth 2.

The groove 27 is located in a profile strip 23 which is attached with a leg 28 to the frame tube profile, for example of the foot frame 6 with screw 5 o. The like. In a corresponding manner, upper straps of the mattress on the frame, for example, near the fold in the area of the header connector 20, if necessary, are also possible. Fig. 5 attached.

10 to 12 show the pivotal mounting of a leg 33 at the foot of the foot frame 6. There, a joint head 34 is fixed, the side of an angular gate section with a vertical and a horizontal link leg 36, 37, which meet in a corner 35. The horizontal leg 37 connects at the bottom to the vertical and extends away from the foot end. The leg 33 engages with two on the standing leg spaced superimposed bolts through the gate 36, 35, 37, which are secured with bolt heads 31, 32 against being pulled out. The distance between the bolts is less than the leg length of the link legs 36, 37, so that the leg 33 placed vertically - Fig. 10 - Is held stable against lateral forces, and placed horizontally - Fig. 12 - maintains this position accordingly. The link 37 is so far away from the foot frame 6, that there is at least a fingerbreiter safety distance between the leg 33 and the foot frame 6.

A variant of the folding lounger show Fig. 13 - 25 , The details shown there can also be advantageously combined with the previously described embodiment.

In Fig. 13 is the lounger, which has a base frame 90, shown in the unfolded lying position, and Fig. 14 shows the folded seating position without arm and backrest and front panel.

The base frame 90 consists of side frames 91, which consist of pipe and angle material and are interconnected from side to side with cross members 92. The corner brackets 75, 75A of the side members 91 have laterally angular notches 76, which serve to receive head pins on upholstered armrests for their attachment.

Furthermore, at the corner angle 75 in the back region corresponding plug receptacles for the attachment of the back cushion part and, accordingly, in the front corner angle 75A a notch 76A is introduced for a front panel to be attached. At the top, a tab is mounted with a bearing 78 for a boomerang-shaped support bracket 80, the other end is hinged near the head frame connector 20 on the back frame 7.

At the supporting angle end located near the bearing 78, a short angular extension 79 is formed with cranks 84, 86, which is directed towards the head end and connected to the scissor spring 53, which is connected to the rear joint 52 of the scissor arm 48 at the other end. As a result, the support bracket 80 is held in its superscript support position for the back frame 7. On the other hand, how Fig. 14 shows the support bracket 80 held in the folded position by the spring 53 in the downwardly pivoted position.

The articulation of the support bracket 80 am.Rückenrahmen 7 consists of a pin 81, which in a winkelschenkelparallelen slot 82 - 83 is limited slidable and pivotable. In the front end position 82 of the pin 81, the lounger and scissors in the lying position is stable and securely held against sinking and buckling. For folding the pin 81 must be effected in the rear position 83 of the slot by lifting the foot and back frame 6, 7 and then the support bracket 80 are rotated so that the scissors 47, 48 begins to fold. Only then can the frame connectors 20, 21 be folded in, as described for the first described model.

To further stabilize the two folding positions, the foot-end legs 33B are firmly connected to the foot frame 6. In the folded state, the legs 33B are behind the Grundsetzraverse 92 within the base frame 90 on the ground and support the foot frame 6 firmly there from how Fig. 14 shows.

At the rear end of the back frame 7 is also supported in the folded state on a base frame support 77. This support 77 elastically locks with the back frame 7.

The connectors 20, 21 of the frames 8, 7; 7, 6 are provided with protective caps 95, 96, 97, which in the Fig. 23 - 25 are shown enlarged. They are made of plastic with molded locking pins 95A, 97A, which are releasable only with tools, so that a secure contact protection of the movable parts enclosed therein or below is given. An oblique nose 95B on the protective cap 95 of the foot frame connector 21, which faces the inner side of the bed, protects against engagement with the connecting portion of the deployable leg 33A, as well Fig. 15 shows.

There, a further latching mechanism 61, 62 is shown, which consists of an elastic fork 61 which is fixed to a horizontal gusset 60 on the foot frame 6 adjacent to the fußendseitigen leg 33 B, and a matching cross member 62 of the back frame 7. The two catch parts 61, 62 close the two frames 6, 7 together in the full fold-in position at a fixed distance, which is independent of the thickness of an overlying mattress.

Fig. 16 shows a further detail at the foot of the foot frame 6. There is a latching hook 64 is disposed in the corner above the leg, which causes a latching with a resilient extension 65 which is fixed to the base frame 90 in the folded state. Thus, the foot frame 6 is folded on all sides releasably connected to the base frame 90 connected.

Fig. 17 shows a further embodiment of the head frame connector 20A, which carries no leg. It consists of angular material and is provided with a cover 98 on its open side and with a protective cap 97 over its joint parts. Thus, the hinge spring 19, Fig. 5 , completely included.

Fig. 18 shows another embodiment of the Fußrahmenverbinders 21 B, which is designed in one piece with removed cover. Also a receiving shaft T1 for the connection of the leg is formed, including rivet holes.

The two frame bearings T3 are bush-shaped and arched by protective and stiffening sheets S1, S2. In the braced arches receiving holes S3 are formed for the pins of the protective cover. Parallel to the receiving shaft T1 extends the extension T8, the mounting holes T5, T2 contains for locking parts.

On the other hand, of the shank T1, a receiving opening T6 for a joint 71 of a damper 72 is reinforced by the arc S2. The arrangement of the damper 72 shows Fig. 19 , This is hingedly connected at the other end 70 to the foot frame 6 and slows down the unfolding and folding of the foot frame 6, in particular in the position Fig. 6 which helps to protect operators if they let go of the frame.

Fig. 20 shows the folded state of the frame 6, 7 with the intermediate leg 33A and the inner damper 72nd

The FIGS. 21 and 22 show from further perspectives the details described above with the same references.

Fig. 26 shows an exploded perspective of folded into a bench B deck without upholstered side parts, but with suspended back cushion part P. This is designed as a hollow body so that it encloses a storage space for blankets or the like. The padded Rückenanlageplatte P1 is hinged at the bottom with a hinge P2 to a frame connection wall P3.

LIST OF REFERENCE NUMBERS

O

load direction

1, 90

basic frames

2

Mattresses Sling

3

support stand

4

scissor lift

5

Screw

6

foot frame

7

back frame

8th

head frame

9

mattress

10

Joint 6 - 21

11

Joint 7 - 21

12

Joint 22 - 21

13

Joint 22 - 20

14

Hooking eye 19 at 7

15

Joint 7 - 20

16

Hooking eye 19 to 20

17

Joint 20 - 8

18

Stop in extended position 20/8

19

joint spring

20, 20A

Headframe connector 7 - 8

21, 21A, 21B

Foot frame connector 6 - 7

22

control rod

23

Molding

24

Impact of 2

25

rivet

26

fixing rod

27

groove

28

leg

29

Cross strut 29 A

30

Articulating wall

31, 32

bolt heads

33, 33A, 33B

leg

34

joint head

35

backdrop corner

36, 37

backdrop leg

41

Control arm at 20 for 42

42

Tab at 41 and 44

43

block link

44

Joint 43 to 47

45

Joint 42 - 41

46

Joint 43 to 8

47

1. scissor arm

48

2. Scissor arm in the pivot bearing

49

Joint 8 - 20 and 41

49-46-44-45

bar linkage

50

Scherengelenk 1 - 47

51

Scissors joint on 8

52

scissor joint

53

scissors spring

54, 55

Federösen

56

Glider 1 - 48

60

Corner Panel

61

elastic fork} locking mechanism

62

Traverse} locking mechanism

64

Latching hook} latching mechanism

65

elastic extension} locking mechanism

70

Dämperlager

71

joint

72

damper

75, 75A

corner angle

76, 76A

notches

77

Basic frame support

78

Warehouse for 80

79

Angle extension

80

Support angle (boomerang)

81

pen

82, 83

Long hole

84, 86

offsets

90

base frame

91

side frame

92

Trusses from the base frame

95, 96, 97

caps

95A, 97A

Connector pin at 95 and 97, respectively

95B

Extensions to 95

98

paneling

99

guard

B

seat

P

Back cushioning member

P1

Back bearing plate

P2

joint

P3

Frame connecting wall

S1, S2

Protective / stiffening bow

S3

mounting holes

T1

shank

T2, T5

mounting hole

T3

frame bearing

T4

In stock

T6

Recording breakthrough

T8

extension

TZ

spreading

Claims (26)

1. Folding bed, covered with a mattress (9) and comprising a head frame, back frame and foot frame (8, 7, 6) which are connected to one another in an articulated manner and are arranged in a collapsed state in a basic frame (1) or box such that they can be raised and lowered by means of a lifting mechanism (4),
   whereby the lifting mechanism (4) comprises scissors-type lifting arrangements, springloaded for lifting action, which are provided on both sides of the head frame (8) respectively, a first scissors arm (47) of each lifting arrangement being articulated, at the bottom end, on the basic frame, where a horizontally movable second scissors arm (48) is supported, the top end of which is articulated at the end of the head frame (8), caracterized in that the first scissors arm (47) is articulated, at its top end, on a short block link (43) at the back-part head-frame end with an articulation (44) on which acts a link plate (42) which is connected in an articulated manner to a control arm (41) and is connected to a spacing head-frame connector (20) of the head frame (8) and of the back frame (7), and is arranged in such a way, that when the head frame connector (20) is brought to a horizontal position, the block link (43) is in a dead-centre position of the scissors articulation (44), and that when the connector is in an inclined position the block link (43) is lead out from the dead-centre position, so that the lifting mechanism (4) holds the head frame (8) in a lowered position.
2. Folding bed according to claim 1, characterized in that a tension spring (53) is, with one end, mounted at the top end of the head frame and, with the other end, at the link-side of the first scissors arm (47).
3. Folding bed according to claim 1, characterized in that the control arm (41) is about twice as long as the distance between the articulations of the block link (43).
4. Folding bed according to claim 1, characterized in that the head frame connector (20) has a length that corresponds approximately to a double thickness of the mattress (9).
5. Folding bed according to claim 1, characterized in that between the back frame (7) and the foot frame (6) a foot frame connector (21) is articulated, which provides for a distance at least the width of a finger between the two frames (7, 6) in the parallel folded state.
6. Folding bed according to claim 1, characterized in that a folding spring (19) pulls the back frame (7) towards the head frame connector (20).
7. Folding bed according to claim 5, characterized in that between the head frame connector (20) and the foot frame connector (21) a control rod (22) is in each case articulated in such a way that a four-bar linkage with the back frame (7) is formed, which in the collapsed condition of the bed is in a locking position against an expansion force (T) of the mattress (9) folded in between the head frame (8) and the back frame (7), and that the articulation (12) of the control rod (22) is arranged at the foot frame connector (21) at a sticking-out handlebar (21A) so that the locked position is released by pivoting the bottom end of the foot frame (6).
8. Folding bed according to claims 6 and 7, characterized in that the folding spring (19) and the control rod (22) are arranged within the frames (6, 7).
9. Folding bed according to one of the above claims, characterized in that the mattress (9) and / or a mattress sling (2) in their outside margins are each provided with a tuck (24), and into the tuck (24) a fixing bar (26) is inserted, and the tuck (24) with the fixing bar (26) is plugged in an undercut slot (27) of a profile bar (23), which is attached to one of the frames (6, 7, 8).
10. Folding bed according to one of the above claims, characterized in that at each side of the bottom end of the foot frame (6) respectively one articulation head (34) is arranged, in which respectively one leg (33) is held in an angled motion link (35, 36, 37) with two bolts (31, 32) so that it can be pivoted and locked.
11. Folding bed according to claim 10, characterized in that the motion link (35, 36, 37) has a vertical side piece (36) whose length is in each case bigger than a bolt spacing of the bolts (31, 32), which are arranged at a distance one above the other when the leg (33) stands upright.
12. Folding bed according to claim 11, characterized in that the leg (33) which is held horizontally in a horizontal side piece of the motion link (37) has a distance of approximately a finger's breadth to the foot frame (6), said horizontal side piece being attached to the bottom end of the vertical side piece of the motion link (36).
13. Folding bed according to claim 11 or 12, characterized in that both legs (33) are connected by a cross brace (29).
14. Folding bed according to claim 5, characterized in that at the two foot frame connectors (21) respectively one leg (33A) is mounted in such a way, that it has approximately a finger's breadth of distance to the foot frame (6) when folded.
15. Folding bed according to one of the claims 1 to 14, characterized in that the legs (33, 33A) are arranged within the back frame (7) when folded.
16. Folding bed according to one of the above claims, characterized in that on each side of the bottom end of the foot frame (6) respectively one leg (33B) is firmly mounted.
17. Folding bed according to one of the above claims, characterized in that the basic frame (90) is composed of side frames (91) on both sides, which consist of angular material connected with crossbars (92).
18. Folding bed according to claim 17, characterized in that the side frames hold notches (76, 76A) to append side, back and front cushion parts, as well as bearings (78), supports (77) and catching appendices (65), to the frames (6, 7, 8) to further support and interlock them.
19. Folding bed according to claim 18, characterized in that a boomerang-shaped support angle (80) is mounted in the bearing (78), with a side piece which, when the bed is unfolded, is arranged parallel to the back frame (7), the side piece comprising a slotted hole (82, 83) being supported on the back frame (7) by means of a movable bearing stud (81), said angle also being connected to the scissors spring (53) by a link plate extending from the bearing (78) towards the top side, the other end of the spring being connected to the scissors articulation (52) at the head side.
20. Folding bed according to one of the above claims, characterized in that the head frame connector (20A) is built of a profile material, which at its free side is covered byh a protective cap (98) and, at its articulations, by a protective hood (99), in such a way that the spring (19) is kept inside.
21. Folding bed according to claim 18, characterized in that the supports (77) are mounted on the basic frame (90) with their top ends and, in the collapsed state, support the foot frame connector (21B) in a releasable catch.
22. Folding bed according to claim 18, characterized in that the catching appendices (65) are elastic and, by way of their position in the collapsed state, catch in a releasable connection with a catch (64) at bottom end of the foot frame (6).
23. Folding bed according to one of the above claims, characterized in that at the bottom end of the foot frame (6) an elastic locking bracket (61) is arranged, which in the collapsed state encloses a crossbar (62) of the back frame (7) and holds the foot frame (6) at a distance.
24. Folding bed according to one of the above claims, characterized in that the foot frame connector (21B) contains an articulation piece, manufactured of one part, and contains the frame bearing (T3) in protecting stiffening bends (S1) and mounting holes (S3) for cladding pins (95A), an attach shank (T1) for a leg (33A) with fixing drill holes, an appendix (T8), with fixing drill holes (T5, T2) for locking parts, as well as an attachment aperture (T6) for an articulation (71) of a damper (72) reinforced by a bend (S2), said damper being articulated on the frame (6) at the other end.
25. Folding bed according to claim 24, characterized in that the articulation piece of the foot frame connector (21B) is clad with a protective cap (95) by means of connector pins (95A), and the protective cap (95) bearing appendices (95B), which cover the access area of the leg (33A).
26. Folding bed according to claim 18, characterized in that at the basic frame (90) a releasable cushion back part (P) can be attached, which contains a receiving space for blankets or the like, and whose back plate (P1) is articulated to a frame connecting wall (P3) with a joint (P2).

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