DE7408768U - Reclining furniture, in particular a mobile hospital bed with a height-adjustable mattress frame and an adjustable backrest - Google Patents

Description

PAl EN TA MW-ALT E ^: "" /

DiPL-INO. LUDEWIG graduate phys. BUSE . dipl-phys. MENTZEL (0

WUPPERTAL 2 UNTERDORNEN 114 CALL (02121) 553611/12

511 password; " Doppelhebe1"

Company WiIh. Berg, 599 Altena (Westphalia)

Reclining furniture, in particular a mobile hospital bed with a height-adjustable bed Mattress frame as well as with an adjustable backrest

The invention relates to reclining furniture, in particular a mobile hospital bed, with an actuating member for height adjustment of the mattress frame as well as with a handle for inclination adjustment from one that can be swiveled out of the mattress level Backrest.

In the known hospital bed, the actuators for the height adjustment of the mattress frame are as pedals in the underframe of the bed are often arranged at the foot of the bed. Sometimes there were handles on the narrow end of the bed to adjust the mattress frame intended. The handle used to adjust the inclination of a backrest that can be swiveled out of the mattress level are usually provided on the long side of the bed in the head area. For adjusting the mattress frame on the one hand and the backrest on the other hand, the operator has to go to different places on the bed, which is cumbersome and is time consuming. It is also disadvantageous that there is a considerable amount of space on the bed for the various actuators and handles is claimed, which is lost for the attachment of other important aids for treating the patient lying in bed. After all, the patient lying in bed is not always able to change his position

the mattress frame and the backrest from the bed To reach actuators and handles or even to operate.

The invention is based on the object of providing reclining furniture of the aforementioned Type to develop which in terms of the design, arrangement and operation of the actuators and handling for the change in position of the mattress frame and the backrest is cheaper is trained.

This is achieved according to the invention in that the actuator for the mattress frame on the one hand and the handle for the Backrest on the other hand are combined into a common control member with two alternative control movements, the movement of which in the one control direction a Stellbewet'ing to the mattress frame associated linkage triggers, but leaves the linkage of the backrest immobile, and its movement in the other control direction causes an adjusting movement of the linkage belonging to the backrest, but leaves the linkage of the mattress frame unchanged.

By combining the actuating member and the handle in a common control member, there is initially considerable space saved at the bedside. Furthermore, additional components are also previously required because of the double function of the actuator dropped out. Nevertheless, a targeted adjustment of the mattress frame is possible on the one hand and the backrest on the other hand in an independent manner possible because the control member is dependent of which of the two alternative tax movements is carried out, acts either on the backrest or on the mattress frame to adjust it. With one at a time

the Steuerbewegunqen the control member is the connection with the the linkage which remains ineffective is in free-wheeling, so that no Imouls is transferred to its movement. This changes only, and in a functionally mirror-inverted manner, when the steering movement is carried out in the other direction. because a common control element is used for adjusting the mattress frame on the one hand and the backrest on the other hand, can all of this can be done from one point on the bed. This actuation point can be so favorable in the area of the mattress frame be arranged that the operation of the common control member both by the staff in front of the bedside as well can be performed equally well by the patient lying in bed.

A particularly inexpensive and reliable one can be used for this Obtain an embodiment of the invention in that a control shaft rotatably mounted on the mattress frame is used as the control member. The aforementioned alternative control movements consist of rotations of the shaft in opposite directions of rotation. To the Pivoting the control shaft one could use a one-armed lever, which alternates, depending on whether the mattress frame or the backrest should be operated in opposite directions Directions is pivoted. In order to avoid any misunderstandings, it is advisable to use a two-winged control shaft on the control shaft Handle to provide one wing when the mattress frame is operated and the other wing only when the Backrest are detected. This can be explained by the location of the two Lever and by finger grooves or the like. On the wing, which take the anatomical conditions into account, conveniently predetermine.

Further '/ advantages and measures of the invention are related with the specific description of the following figures a lsnefihrt, to which reference is made in this regard.

''. ^ show:

Fin. 1 a side view of the hospital bed,

Fi η. 2 enlarged, partially in section, a partial view of the bed of FIG. 1

Fig. 3 is a longitudinal sectional view through the head end of the mattress frame with two positions of the backrest located there and its linkage,

FIGS. 4 and 5 show the mode of operation in a scherr.atische representation of the linkage used to operate the mattress frame.

The hospital bed consists of an undercarriage that can be moved on rollers 11 10 and a mattress frame 12 which can be adjusted in height by means of a number of lifting levers 19, 20.

The underframe 10 consists of U-shaped profiled longitudinal beams 14 connected between transverse beams 13 at the ends, in the side walls of which two parallel shafts 17, 18 are arranged, which run in the transverse direction of the bed. The aforementioned lifting levers 19, 20 are located on the ends of the two shafts 17, 18 protruding laterally from the longitudinal beam 14 and are connected to the mattress frame 12 via a rigid bracket 21 or an articulated link 24.

/ 4 '.-BVöK -', j. n

A lifting drive is located in the longitudinal member 14 of the underframe 10 30 arranged, which carries an extendable push rod 31 which is articulated at the end of a lever arm 3 3, which rotatably with the one , 'rush 17 communicates. A this lifting drive 30 comprehensive At the opposite end of the push rod 31, the chassis 34 is connected to the underframe 10 via a pivot bearing 35. The one when driving out the push rod 31 performed on the shaft 17 angular adjustment the lifting lever 19 continues in an upward movement. However, this goes through a coupling linkage (not shown in more detail) Rotation of the shaft 17 also on the other shaft 18 over, so that. if the coupling is not broken, a corresponding upward movement of the other lifting lever 20 takes place. Due to the aforementioned interruption of the coupling, any Achieve the incline setting of the mattress frame. However, this is not shown in detail.

In the head area of the mattress frame 12 there is also a backrest arranged and connected to the mattress frame 12 by a swivel joint 16. From the mattress level, the backrest 15 can be divided into different Inclination positions are extended, for which a between Mattress frame 12 and backrest 15 arranged work rods 22 is responsible. The appearance and the mode of operation can be seen in more detail in FIG. 3.

Arranged on the mattress frame 12 is a girder which runs under it and to which a controllable gas pressure spring 26 is attached in a stationary position via a plurality of brackets 27. The gas pressure spring 26 has a gas filling flowing through the axial movement of a control pin 28 between two chambers of a piston (not shown in detail). The gas spring 26 serves as a force *

Storage. In the position shown in FIG. 3, shown in solid lines the gas pressure spring 26 is in the state of a “filled energy storage device”. The control pin which is under internal spring loading 28 is axially protruding. One on the gas spring 26 extendable piston rod 29 is in the pushed-in position. The backrest 15 is in the flattest position, which is effected by the following members of the further work linkage 22 will. Under the backrest 15 there is a girder 32 on which a pair of tabs 37 running parallel to one another is located is welded in place. An intermediate liner 44, which is also arranged in pairs, is attached to the strap ends via a hinge 42 is, which is why the piston rod 29 can be arranged between the two links 44, 44, which has a further joint at its free end 45 for connecting these pairs of links 44, 44 has. The tabs 37 assume an eastern angular position with respect to the backrest 15. This is achieved not only by the rigid connection of the straps 37 on the girder 32, but also by a spacer plate 46, which is welded at one end to the pair of tabs 37 and at the other end to a frame web of the backrest 15. It What is important here is that the joint 42 does not come down below the axis 47 of the gas pressure spring 26 indicated by dash-dotted lines in FIG.

Below the mattress frame 12 is vertically extending tabs 49 a special control shaft 52 below the mattress frame 12 and carries a tab 54, which is fixed against rotation therewith. The tab 54 is designed in such a way that upon rotation of the control shaft 52 in the sense of the indicated rotary arrow 55 of the tabs against the The end of the control pin 28 abuts. As a result, a valve is opened in the interior of the gas pressure spring 26, which the gas filling on the

can occur on the opposite side of the piston and thereby move the piston rod 29 out axially in the direction of the arrow 56 shown leaves. The piston end having the articulation point moves into position 45 ', from which, as indicated by dashed lines is indicated, the steepest inclination 15 'of this backrest is achieved. The articulation point 45 has long been the Dashed-dotted axis 47 of the gas pressure spring moves further. The handlebar pair has reached the position 44 ', whereby the pair of tabs rigidly attached to the backrest assume the position 37' is forced. Of course, there is between the dashed steepest slope 15 'and the flat surface 15 shown in solid lines Intermediate position of the backrest can be set continuously. this happens simply by letting go of the control shaft 52, whereby it is rotated back against the arrow 55 shown and the tab 54, which is fixed against rotation thereon, is pivoted back. So that the control pin 28 of the gas pressure spring 26 is released and can be moved back into its pushed-out locking position under the spring load inherent in it, where the aforementioned Valve inside the gas pressure spring 26 is closed. This creates a further flow of the gas filling between the two chambers prevented in the gas pressure spring 26 and maintained the position present at this moment in the extension of the piston rod 29. Depending on the extent of the extension that has taken place, this corresponds to a specific inclined position of the backrest 15.

A pivoting back of the backrest 15 from a steep inclination into a shallower position can with the selected drive means one Gas pressure spring 26 cannot be taken care of automatically by this. Depending on the inclination, the energy storage of this gas pressure spring has 26 more or less discharged and cannot be self-sufficient again.

tMust be brought into a more highly charged working state. Man For this purpose, the backrest is swiveled back by hand, whereby of course gravity helps. For example, to move the backrest back from the dashed position 15 ', a pivoting movement in the sense of the indicated rotary arrow 59 is carried out by detecting its frame, via which connected thereto members 37, 44 of the working rod 22 is Finally, the piston rod 29 is also pushed back into the gas pressure spring 26. Valves ensure a suitable reversal of the gas fillings inside. To return the Gas pressure spring 26 in its initial position shown in solid lines, energy is consumed by increasing the pressure of the gas fillings is stored in a chamber inside it. There is now a full "Kraftsneicher" before the operation of the fiteuerzanfens 28 via the control shaft 52 again a pivoting work on the backrest.

The control shaft 52 issues different control commands, as can be seen in connection with FIG. 2. At both ends of the steering wheel 52, the} because on the linging edges of the mattress frame 12 en len, there is a rotatably connected, double-leaf Handle 61, 71. The two wings 61, 71 are angled to a horizontal plane and are each on their to Provide finger grooves on the bottom side of the surface. If one grasps one of these two wings 61, 71 and thus rotates the control shaft 52 in the sense of the arrow 55 also drawn in FIG. 2, then the inclination adjustment described in connection with FIG the backrest 15 comes about. If, however, the two wings 61, 71 are rotated in opposite directions - as shown in FIG. 2 Rotary arrow 62, it is initially, with regard to the backrest 15,

to determine that this remains unaffected by this, because the on The tab 54 formed on the shaft 52 moves away from the control pin 28 of the gas pressure spring 26. So here comes one Freewheeling of the interacting components 54, 28, which do not affect the working linkage 22 belonging to the backrest 15 leaves. The control movement of the handle 61, 71 in this direction of rotation 62, however, has a control effect with regard to the height adjustment of the mattress frame 12, because a release linkage 60 acts on the lifting drive 30 in the underframe 10, the mode of operation of which is first to be explained briefly. A more detailed description and illustration of the lifting drive can be found in the descriptive text of a parallel patent application, password: "Clamping lifter" can be seen to which reference is made extensively.

The lifting rod 31 already mentioned above is arranged axially displaceably in the chassis 34 between two vertical guide slats 38, 39, they determine the inclination of the working rod 31. Two clamping members 40, 50 are also arranged in the chassis, which are alternately tilted with the push rod 31 stand. The rear clamping member 50 is used to axially transport the push rod 31 in the direction of the arrow 36. This transport clamping member 50 can be actuated via a pedal 86 shown in FIG. The pedal 86 is adjoined by a handlebar 87 and finally an angle lever 70 at, de _r / vertical overlap 73 is supported by a pivot axis 72 on the chassis 34 and at its short end a rotary bearing 51 of the transport member carries 50th If the pedal 86 is pivoted in the sense of the rotary arrow 85 drawn in in FIG. 1, the result is a movement of the axis 51 of the clamping member at the other end of this lifting rod 90 approximately parallel to the axis of the push rod

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31 movement taking place in the direction of the arrow drawn «g. here by is the clamping member 50, which is usually by effect a compression spring 58 is held pressed against a fixed stop 81 on the chassis, q brought into clamping engagement with the push rod 31 and transports them in the direction of arrow 36. The push rod 31 is thus on the tilting passage 53 firmly captured in the clamping member 50.

Meanwhile, the other clamping member 40, which is usually in clamping engagement with the push rod 31 via its feed-through opening 43 stands, through the movement 36, relieved against the compression spring 48 acting on it in the same sense. The locking clamp member 40 is fixedly attached in the chassis 34 via a pivot bearing 41. If the push rod 31 is at rest, the push is = rod 31 is held at the lead-through opening 43 of the clamping member 40. Meanwhile, when the stop 81 becomes effective, the transport clamping member 50 is free relative to the push rod 31. During the upward movement of the mattress frame 12 over the above mentioned lifting rod 90 takes place by moving the push rod 31 in the direction of the arrow 36, it is to lower the Mattress frame 12 only required, the tilting clamp to lift briefly on the locking clamping member 40 until the desired position is reached continuously. That is what this is for The release linkage 60 mentioned above, which, as already mentioned, is in operative connection with the control shaft 52. At the bottom The end of this release linkage 60 is located, as the last link in front of the clamping member 40 to be unlocked, an angled one Unlocking lever 57, which is attached to a length-adjustable via a swivel blade 65 Bracket / is attached to the chassis 34. One end of the lever 57 is attached to the chassis at 67 with a

directed return spring 68 and stepped a pair of unlocking cams 69, which when pivoting the unlocking lever 57 in the sense of the drawn rotary file 80 against the canted Press the end of the clamping member 40 and cause its pivoting back into its pivot bearing 41. At that moment the push rod is 31 released and is able to counteract the axial loads acting on it from the mattress frame via gravity move the arrow 36 drawn into the interior of the chassis 34. This is a ^ i'.ckbrvegunq the lifting lever 19, 20 on the hospital bed according to Fig. 1 allows, so that the desired deeper position can be achieved. Once this has been achieved, only the release lever 57 needs to be released because it is then moved back by itself, against the rotary arrow 80 shown, due to the return spring 6 8, and the unlocking camcn 69 moved away. As a result, under the influence of the compression spring 48, the locking clamping member is tilted again 40, which secures the selected position of the scraper rod 31 by clamping.

The release linkage 60 has in connection with its last link, the Release lever 57, a Bowden cable 74. The lower end 75 of the Bowden cable jacket 76 is attached to a bracket 83 of the chassis 34. The lower end 78 of the Bowdenzurj core 77 is for the execution of the Control movement rotatably attached to the end of the unlocking lever 57.

In contrast, the upper end 79 of the Bov.'denzug jacket 76 is supported so as to be movable on an angle lever 63, which in turn is connected to the control shaft 52 in a rotationally fixed manner. In contrast, the upper end 82 of the Bowden suction core 77 is fixedly attached to the mattress frame. _{In the} present case, one uses a

-12-

serr, area running frame web 64 of the mattress frame 12, which is provided with a slot 84 for the introduction of the cable core 77 at this point. When turning the two wings 61, 71 the common handle in the sense of the drawn arrow 62 from Fi <). 2 there is an inward movement of the lower cable end 78 in the direction of the arrow 80 marked in, where the cable core is fixed in place at 82. This mode of operation results from the schematic FIGS. 4 and 5.

In Fig. 4, the Bowden cable is stretched for a better overview shown. All relevant components are marked with the aforementioned reference symbols. Fig. 4 is from the previous one Description understandable. The sum of the sections 91 protruding from the Bowden cable jacket 76 at both ends is remarkable, 92 of the bowden cable core 77.

If now, as evidenced by FIG. 5, the control shaft 52 is so far in the sense of the indicated arrow 62 is moved further until the illustrated Inclined position 63 * of the lever is reached, the distance between the upper end 79 and the lower end 75 of the Bowden cable jacket shortened, which is why the deflectable Bowden cable has to buckle. The exposed upper section 91 'of the Bowden cable core As a result of this, 77 became a Hitch. Since the total length of the Soul must remain constant is necessarily the one exposed below Section 92 'of the soul has become shorter by a corresponding amount. This causes the pivoting shown in FIG. 5 of the release lever in its position 57 shown, in which the unlocking cams occupy the corresponding inclined position 69 'to render the locking clamping member 40 ineffective from Fig. 2

The position explained with reference to FIG. 5 is shown in phantom in FIG. The deflection of the Bowden cable 74 is expressed in the larger arc formation 74 'shown in the course of the Bowden cable. This is guided with the help of an eyelet 9 3 attached to the angle lever 63, which eyelet 9 3 moves into position when the lever is pivoted 63 'also moved. The Bowden cable 74 is passed through an opening in the longitudinal member 14 of the underframe 10, which by a Cable sleeve 94 can be closed. Instead of at Chassir 34 could the jacket end 75 of the Bowden cable can also be attached to the underframe itself.

The above-mentioned rotation 55 for adjusting the inclination of the backrest 15 affects the actuation of the mattress frame in a freewheel. For this purpose, the free end of the angle lever 63 is the protruding cable core 77 with a free The pipe socket 95 surrounding the play is provided which is screwed into the angle lever 9 3 via an external thread. Nuts 96 secure the position of the pipe socket 95 with its relevant lower front end 97. The upper end 79 of the is supported against this front end 97 Bowden cable jacket 76. This way, when rotating in mind of the rotary arrow 62 the bending of the Bowden cable into the position 74 ' achieved. But if you move the two wings 61, 71 of the handle in the direction of the rotary arrow 55, the tube 95 slides ineffectively longitudinally along the Bowden cable and does not affect the position of the upper one End 79 of the Bowden cable jacket 76. This has the consequence that the rotational movement of the control shaft 92 in the direction of rotation 55 the release linkage 60 leaves unaffected and thus the locking position of the locking clamping member 4O does not cancel.

PATENT LAWYERS

DIPL-ING. LUDEWiG > DlPL-PHYS. BUS! 56 WUPPERTAL 2 UNDER THORNS 114

DIPL-PHYS. ME NTZ E

Call (0 2121) 55 3611/12

511

Password: "Doone! Lever"

List of reference symbols:

10 subst

11 role

12 mattress frames

13 cross members

14 side members

15 backrest

16 swivel joint of

17 wave

18 wave

19 lift lever

20 lift levers

21 rigid tab

22 work joints 2 3 girder 2 4 handlebars 2 5 pair of brackets

26 gas spring

27 tab for 2 8 control fences

29 piston rod

30 lifting drive

31 push rod

32 girder

33 lever arm

34 chassis

35 swivel bearings

36 arrow

37 tabs

38 guide plate

39 guide rail

40 Locking Clamp Link

41 pivot bearings

42 joint

43 Feed-through opening of

44 intermediate links

45 joint

46 Distance bar

47 axis

48 compression spring

49 tab

50 transport clamp

51 pivot bearings

52 control shaft

53 Feedthrough opening

54 noise

55 rotary part on

56 "for sale

57 Release lever

58 compression spring

59 Swing back from

60 looseness twinge

61 right wing of the handle

62 Rotary File

63 angle lever

64 frame tar

65 swivel bearings from

-2-

66 adjustable brackets

67 connecting ends of

68 return spring

69 Release cam

70 angle lever

71 left Flüael the handle

72 swivel axis

73 laps

74 bowden cable

75 lower end of

76 coat of

77 soul of

78 Lower end of

79 Upper end of

80 rotating arrow

81 stop for

82 Upper end of

83 tab

84 slots

85 rotating arrow

86 pedal

87 handlebars

88 turntables from

89 PrehDfeil

90 push rods

91 upper free section of

92 lower free section of

93 eyelet

94 socket 14

95 pipe socket

96 nuts on

97 front end of

Claims (7)

Password; "Double lever" claims 1. Reclining furniture, in particular a mobile hospital bed, with an oinera actuator to adjust the height of the mattress frame and a handle to adjust the inclination of a backrest that can be swiveled out of the mattress level, which means that the actuator for the mattress frame (12) and the handle for the backrest (15 ) are combined into a common control element (52) with two alternative control movements (55, 62), the movement of which in one control direction (62) triggers a steering movement i O) of the rod (60) belonging to the mattress frame (12), but the linkage (22) of the backrest (15) leaves unmoved, and its movement in the other control direction (55) causes a steering movement of the linkage (22) belonging to the backrest (16), but the linkage (bOjQO) of the mattress frame ( 12) leaves unchanged. 2. Reclining furniture according to claim 1, characterized in that the common control element from a rotatably mounted control shaft (52) consists, the control movements with mutually opposite Direction of rotation (55; ^ ~). 3. Reclining furniture according to claim 2, characterized in that the common control shaft (52) has a two-winged handle (6l; 7l) , one wing (61) when actuating the mattress frame (12) and the other wing (71) when actuating the Backrest ( 1 5) is to be grasped. H. Reclining furniture with an iioial arranged on the mattress frame. youth member and one, assuming that, to the fluban i. ri ^u - b llowdenzue guided in the underframe as £ expensive rsre s tönre tu. dir ·· Mnhenverste 11 us of the mattress frame according to one or more of claims 1 to 3, characterized in that on its upper edge (79; -) the Bowdenzusi core '77; is fixed on the mattress frame (12) and the Bovfdenzus jacket (7t>) is detachably attached to a non-rotatable plane (63) that is lined with the steering shaft, while the Bowden cable jacket (76), conversely, is on the lower edge (75; 7 ") ) set in the underframe (10) and the Bowden cable Seel ° (77j steuerbeweglioh is coupled to a working link (57) of the lifting drive (30). 5. A bed according to claim '·, characterized gekennzoichne i that the control shaft (52) "ine implementation (9") is provided for the Bowden cable SeeIe (77) on the lever (63), in the hand region, the Bowdeuzur coat ( 97) is supported on the surface side of the lever (03) facing the lower ceste11 (10). 6. Reclining furniture with a K ^ Tf memory serving to lower the backrest, affordable gas pressure fndprn according to one or more of the insp ^ iiche 1 to ^r ), ilariiiroli konnzn without the fact that the control shaft (5-) a detaching cloth (5Ί) has, whose movement path at Urehune dor Volle (52) in one direction of rotation ( ^r · ') with the control pin (2 ^) only gas pressure spring (26) is aligned. M08768-t.7.7t 7. Ii esremnlifil according to claims, dadiirrh * s kdiiizp i c hne t that the pressure spring (2 ^f >) with her ^ m ijehnusn is rigidly attached to the Mn tra t / en frame (12). and your spreader pin ('J) is called Ueweeuneen the backrest (1 5 Ϊ a fixed l.aee in the mattress frame (IJ) ei ηη i mmt.