EP0813853A2 - Dispositif de lit - Google Patents

Dispositif de lit Download PDF

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Publication number
EP0813853A2
EP0813853A2 EP96120729A EP96120729A EP0813853A2 EP 0813853 A2 EP0813853 A2 EP 0813853A2 EP 96120729 A EP96120729 A EP 96120729A EP 96120729 A EP96120729 A EP 96120729A EP 0813853 A2 EP0813853 A2 EP 0813853A2
Authority
EP
European Patent Office
Prior art keywords
bed plate
rotation
bed
plate structure
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96120729A
Other languages
German (de)
English (en)
Other versions
EP0813853B1 (fr
EP0813853A3 (fr
Inventor
Masayasu Morita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
France Bed Co Ltd
Original Assignee
France Bed Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by France Bed Co Ltd filed Critical France Bed Co Ltd
Publication of EP0813853A2 publication Critical patent/EP0813853A2/fr
Publication of EP0813853A3 publication Critical patent/EP0813853A3/fr
Application granted granted Critical
Publication of EP0813853B1 publication Critical patent/EP0813853B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/001—Beds specially adapted for nursing; Devices for lifting patients or disabled persons with means for turning-over the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/008—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame tiltable around longitudinal axis, e.g. for rolling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/012—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame raising or lowering of the whole mattress frame
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position

Definitions

  • the present invention relates to a bed apparatus effective to prevent development of any bedsore in a bed user especially, such as a fed-ridden ill or elderly person.
  • the patient being unable to turn in a bed or raise his or her own body, has to be kept confined to the fed for a prolonged period of time.
  • the bed user continuing his or her supine position over a prolonged period, has suffered a so-called "bedsore" and experiences greater pain in him or her.
  • the patient In order to prevent such bedsore, the patient has to properly rotate his or her position by varying a bed plate in a width direction. Bed apparatuses having such a rotation function have been developed.
  • the bed plate has such a structure as to allow its portion to be driven in a freely raising/lowering manner, so that the bed user, being unable to raise his or her torso under his or her own, can eat and read in a raised bed plate or maintain his or her torso comfortably in a raised bed plate.
  • a bed apparatus has been developed which has both the rotation function and the raising/lowering function.
  • the bed apparatus equipped with both the rotation function and the raising/lowering function, usually includes a base on which a rest frame is so placed as to be movable in an up/drown direction.
  • the base is of such a type that a support frame is mounted thereon and that a rotation frame is rotatably mounted on the support frame with a bed plate structure provided on the rotation frame.
  • the bed plate structure has a middle bed plate assembly and side bed plate assemblies provided one at each side of the middle bed plate assembly in which case these bed plate assemblies are rotatable only in an upward direction.
  • the respective bed plate assemblies are divided into a plurality of bed plates each having a predetermined length in a longitudinal direction and connected to be rotatable.
  • the rotation frame has a width dimension smaller than that of the bed plate structure.
  • the support frame has its width dimension set to be greater than the rotation frame and smaller than the bed plate structure.
  • the support frame includes a rotation drive mechanism for rotationally driving the rotation frame in a width direction and the rotation frame has a raising/lowering drive mechanism to allow the bed plate in the bed plate structure to be driven in a raising/lowering direction.
  • the bed plate structure is driven in an interlocking relation.
  • one side bed plate assembly at a lower side in a rotation direction abuts against the upper surface of one side of the support frame and rotated upward, so that the user in a supine position can be prevented from falling on the bedside.
  • the bed plate structure bendably rotating in a width direction cannot be raised and lowered in the longitudinal direction, while, on the other hand, the bed plate structure in a raising/lowering state cannot be rotated in the width direction.
  • the bed plate structure in one of the rotating state and raising/lowering state is driven toward the other state, an undue force is applied to the bed plate structure, so that the bed plate structure and drive mechanism are sometimes caused to damage.
  • the usual practice is to prevent the bed plate structure in one of these two states from being driven toward the other state. That is, whether the bed plate structure is in the rotating state or in the raising/lowering state is detected by a corresponding limit switch. If either one of these states taken by the bed plate structure is detected by the limit switch, then a control circuit effects such control as to prevent the bed plate structure from being driven toward the other state, that is, from being driven in both these states.
  • the limit switch detects whether or not the middle bed plate assembly of the bed plate structure is in a horizontal state (a zero-rotation-angle state) and whether or not the raising/lowering angle of the respective bed plates is set at a zero raising/lowering angle.
  • the bed plate structure in the rotated state (inclined state) is driven in a horizontal direction
  • the middle bed plate assembly is bent, so that, just before the middle bed plate is set to the horizontal state, the limit switch is sometimes turned ON by the bent middle bed plate assembly to stop the rotation of the bed plate structure.
  • the limit switch In such a state, if the bed plate structure is electrically detected by the limit switch as being horizontal, it is possible to set the bed plate structure in a raised/lowered state. If, however, there arises a variation in a distribution of a load inflicted by the user on the middle bed plate assembly due to the raising/ lowering of the bed plate structure, then the limit switch, being turned ON upon rotation of the bed plate structure, is sometimes rendered OFF.
  • the bed plate structure Since, in this case, the bed plate structure is detected as being not only in a raising state but also in the rotating state, these operations are immediately stopped by the control circuit, that is, the mutual drive inhibiting control circuit. Even if, thereafter, the rotation or raising/lowering operation is to be restarted, the bed plate structure is detected by the respective limit switch's signals as both in a rotating state and in the raising/lowering state and the bed plate structure is moved neither to a rotating state nor to a raising/lowering state under the control circuit.
  • the present invention is achieved based on the above-mentioned situations and it is accordingly the object of the present invention to provide a bed apparatus which, even if a bed plate structure is to be stopped both in a rotating state and in a raising state, enables an intended operation to be performed through a control circuit without involving any non-operation.
  • a bed apparatus is provided, characterized in that
  • a bed apparatus as shown in FIG. 1 includes a base 1 of a rectangular frame.
  • the base 1 has stopper-equipped casters 2 at four corners on its lower surface.
  • a pair of brackets 3 are provided uprightly in those opposed side positions of the base 1 at each end of a longitudinal direction such that one pair of brackets 3 are located in a corresponding relation to the other pair of brackets 3 as viewed in a width direction as shown in FIG. 3.
  • a pair of rotation shafts 5 constituting a raising/lowering link mechanism 4 are rotatably spanned on each pair of brackets 3.
  • a pair of levers 6 are fixed at one end to the end portions of the respective rotation shafts 5.
  • a support shaft 7 is fixed at an end portion to the other end sides of the levers 6 in a respective pair.
  • a roller 8 is rotatably provided on each extreme end of the respective support shaft 7.
  • a first arm 9 is fixed at a one-end side to an intermediate portion of one rotation shaft 5 and a second arm 11 is fixed at its intermediate portion to the intermediate portion of the other rotation shaft 5.
  • One and the other end of an interlocking rod 12 are pivotally mounted on the other end of the first arm 9 and one downwardly attending end of the second arm 11, respectively.
  • a raising/lowering drive mechanism 13 is provided on the upper surface of an intermediate portion of an interlocking rod 12.
  • the raising/lowering drive mechanism 13 comprises a drive source 14 swingably mounted on the interlocking rod 12 and a drive shaft 15 driven by the drive source 14 in back and forth motion and the forward end of the drive shaft 15 is pivotally mounted on the other end of the second arm 11.
  • the second arm 11 When the drive shaft 15 is driven in a projecting direction with the operation of the raising/lowering drive mechanism 13, the second arm 11 is rotated in a counterclockwise direction as indicated by an arrow a in FIG. 1 in interlock with the one rotation shaft 5. With the rotation of the second arm 11, the inter-locking rod 12 is slidably moved in a direction as indicated by an arrow b in FIG. 1 to allow the first arm 9 to he rotated in a counterclockwise direction as indicated by an arrow c in FIG. 1.
  • FIG. 11 shows a state in which the rest frame 21 is raised over the base 1.
  • connection link 23 In order to prevent the raised rest frame 21 from being freely moved along a longitudinal direction through the contact of the rollers with the guide rails, one end and other end of a connection link 23 are rotatably connected to the rest frame 21 and lever 6 as shown in FIG. 3.
  • the connection link 23 inhibits the rest frame 21 with the rolls 8 supported in the guide rails 22 from being freely moved in a horizontal direction.
  • the detaching of the connection link 23 enables the rest frame 21 to be detached from the base 1.
  • the rest frame 21 can be raised and lowered in the horizontal state without involving a horizontal slide motion and hence is neither tilted nor has its longitudinal end abutted against a wall surface.
  • a rectangular support frame 25 larger than the rest frame 21 is detachably fixed to the upper surface of the rest frame 21.
  • the support frame 25 has three lateral rods 26 provided along the width direction and longitudinal rods 28 mounted by connection members 27 on both the ends of the respective lateral rods as shown in FIGS. 2 and 3.
  • An abutting plate 28a made of a resin is provided on the upper surface of the longitudinal area of the respective longitudinal rod 28.
  • a pair of receiving members 29 are uprightly provided on the opposed end portions of the pair of lateral rods 26 which in turn are each provided on both the longitudinal end portions of the support frame 25.
  • the receiving member 29 has arcuate recess 29a one opened at its top side and one at its inside surface side.
  • a rotation frame 32 is provided relative to and between the pair of longitudinal rods 28 of the support fame 25.
  • a pair of support rollers 33 are rotatably mounted one at each end face of the respective longitudinal section of the rotation frame 32. The respective support roller 33 is engaged with the associated recess 29a in the receiving member 29.
  • connection bracket 30 is provided on end portions of each of the pair of longitudinal rods 28 of the support frame 25 such that the connection bracket 30 depends from its fixed upper end portion.
  • the lower end portion of the respective connection bracket 30 is detachably mounted at each of four corners of the rest frame 21 as shown in FIG. 1.
  • the support frame 25 is moved in interlock with the up/down motion of the rest frame 21.
  • a pair of mounting rods 34 are spanned between the pair of lateral rods 26 one at one longitudinal end portion and one at the intermediate portion of the support frame 25 as shown in FIGS. 2, 3 and 6.
  • An auxiliary lateral rod 26a is spanned between the intermediate portions of the mounting rods 34 in a parallel relation to the lateral rod 26.
  • a rotation drive means 35 is provided relative to these rod members 26, 26a and 34 to allow the rotation frame 32 to be rotated in a right/left direction.
  • the rotation drive means 35 is so constructed as shown in FIGS. 5 to 8.
  • a bracket 36 is provided at the lower surface side of the one-side mounting rod 34 as shown in FIG. 6 and a drive source 37 has its one end pivotally mounted on a bracket 36.
  • the drive source 37 comprises a motor 38a, a screw shaft 38b rotated through the rotation of the motor 38a, and a movable body 38c movable along the screw shaft 38b.
  • a pair of first links 39 of an L shape are pivotably mounted at one end to the movable body 38c to provide a link mechanism 40A as shown in FIG. 5.
  • the first link 39 is fixed at the other end to a support shaft 41.
  • the support shaft 41 is rotatably spanned on brackets 40 which are mounted upright on the one-side lateral rod 26 and auxiliary lateral rod 26a as shown in FIGS. 5 and 6.
  • One end portion of the support shaft 41 is projected from the one-side bracket 40 toward the other-side lateral rod 26 side.
  • One end of a second link 42 which is straight, is fixed to the projecting end of the support shaft 41.
  • An interlocking pin 43 is provided on the other end of the second link 42 and projected there. The interlocking pin 43 is slidably engaged with elongated holes 44a and 45a extending from one end side to an intermediate area side of the third and fourth links 44 and 45, respectively, and cannot be slipped out of these elongated holes.
  • connection pin 46 is pivotally mounted on the other end side of the third and fourth links 44 and 45 as shown in FIG. 5.
  • One-end sides of connection links 47a, 47b and one side faces of retaining members 49, 49 are pivotally mounted on the connection pins 46, 46 with the retaining members 49, 49 fixed to both end portions of a steady link 48.
  • the other-end sides of the connection links 47a, 47b are pivotally mounted on both end portions of the rotation frame 32 in a width direction on one longitudinal end of the rotation frame 32.
  • connection links 47a, 47b and support rollers 33, 33 on both the ends of the rotation frame 32 are mounted on the rotation frame 32 by means of an associated pin 51 as shown in FIGS. 6 and 7 (see 47b).
  • Substantially L-shaped steady grooves 50 are provided, as engaging means, on the other side faces of the retaining members 49 and opened at one-end face side and lower end face side situated inside in the width direction of the support frame 25.
  • An engaging pin 52 serving as a engaging body is projected from the other-side lateral rod 26 toward the auxiliary lateral rod 26a and slidably engaged with the steady groove 50 of the retaining member 49 as shown in FIGS. 7 and 9.
  • a distance L1 between the engaging pins 52 is made somewhat greater than a distance between those open ends of the pair of steady grooves 50 but made smaller than a distance L2 between the extreme ends of the steady groove 50.
  • the paired engaging pins 52 are engaged with the associated steady grooves 50 of the retaining members 49 so that the rotation frame 32 is held in a steady state without being shaken in a right/left direction. That is, since the rotation frame 32 is rotatably supported by a link mechanism 40, it is unavoidable that, when the link mechanism 40A is not in a driven state, that is, the rotation frame 32 is in the horizontal state, shaking occurs in the rotation direction due to a play at the respective link.
  • the movable body 38c of the drive source 37 When, in FIG. 8, the movable body 38c of the drive source 37 is driven in a direction of an arrow A, the first link 39 is rotated in a direction of an arrow B and, in this case, it is done in interlock with the second link 42, the interlocking pin 43 provided at the other-end side of the second link 42 is engaged with the upper end of the elongated hole 45a of the fourth link 45 to allow the link 45 to be rotated in a raised direction of an arrow D in FIG. 8 and, at the same time, the interlocking pin 43 is slidably moved along the elongated hole 44a in the third link 44a.
  • the steady link 48 is also moved in slide motion in the horizontal direction as indicated by an arrow C.
  • the steady groove 50 of the one side retaining member 49 situated on the upper end side of the fourth ring 45 is allowed to be disengaged from the one side engaging pin 52 and the other side engaging pin 52 is relatively moved in slide motion toward the extreme end side of the steady groove 50 of the other side retaining member 49.
  • connection links 47a, 47b As indicated by a phantom line in FIG. 8, that is, the rotation frame 32 has its other-end side raised over the support frame 25 with the support rollers 33, that is, rollers 33 supported in the associated recesses 29a of the receiving members 29 on the one-end side of the rotation frame 32 in a width direction, as their fulcrums.
  • the interlocking pin 43 With further driving of the first links 39 from that state, the interlocking pin 43 is upwardly moved in slide motion into abutting contact with the extreme end of the elongated hole 44a in the third link 44 to push the third link 44 in a direction of an arrow E in FIG. 8.
  • the steady link 48 slides in a horizontal direction reverse to the arrow C to allow the one side engaging pin 52 to be brought back into engagement with the steady groove 50 of one side retaining member 49. That is, the rotation frame 32 is held in a horizontal state without being shaken in the right/left direction.
  • the third link 44 is upwardly moved in a raised direction and the rotation frame 32 can be rotated with its width-direction other-end side as a fulcrum.
  • a bed plate structure 61 is disposed on the upper side of the support frame 25 and rotation frame 32.
  • the bed plate structure 61 comprises, as shown in FIGS. 10A and 10B, a middle bed plate assembly 62 having a size substantially corresponding to that of the rotation frame 32 and a pair of side bed plate assemblies 64 connected, by hinges 63 as will be set out below, to both sides of the middle bed plate assembly such that these side bed plate assemblies 64 can be rotated only in the raised direction.
  • the respective bed plate assemblies 62 and 64 are provided in plural members, that is, as first to fourth bed plates 62a to 62d and 64a to 64d, respectively, in the present embodiment.
  • the bed plates of the respective bed plate assemblies 62 and 64 are placed over four mounting frames 65a to 65d sequentially connected in a rotatable manner.
  • the respective bed plates 62a to 62d of the middle bed plate assembly 62 are fixed to the mounting frames 65a to 65d.
  • the floor plates 62a to 62d of the side bed plate assembly 62 are place over the mounting frames 65a to 65d to allow them to be rotated upwardly.
  • the respective bed plates 62a to 62d and 64a to 64d are provided as an integral structure by blow-molding the middle bed plate assembly 62 and paired side bed plate assemblies 64 with a synthetic resin.
  • the middle bed plate assembly 62 and paired side bed plate assemblies 64 are formed as a hollow structure having a predetermined thickness.
  • the top ends of the middle bed plates and those of the side bed plates as viewed in their thickness direction are connected, as an integral structure, by thinned areas serving as hinges 63.
  • the side bed plate assemblies 64 can be rotated relative to the middle bed plate assembly 62 in a raised direction as indicated by a phantom line in FIG. 10B and the rotation of the side bed plates in a down direction is restricted by the the abutting contact of the side bed plate ends with the adjacent ends of the middle bed plates.
  • a plurality of air ports 66 are provided at the respective bed plates of the middle and side bed plate assemblies at the time of blow molding to penetrate through their thickness. By doing so, the bed plate structure 61 allows air to pass through the air ports in the thickness direction.
  • the bed plates 62a to 62d and 64a to 64d are formed of two kinds of molding units differing in their size. A pair of juxtaposed molding units are placed at each longitudinal ends of the bed plate structure and two molding units of different size are placed between one pair of juxtaposed molding units at one end and the other pair of juxtaposed molding units on the other end of the bed plate structure.
  • the rotation frame 32 When the rotation frame 32 is rotated by the rotation drive means 35 and, at this time, it is done in interlock with the middle bed plate assembly 62 in the bed plate structure 61, the one side bed plate 64 situated on the "raised” side is maintained on the same plane as the middle a bed plate assembly 62 while the other side bed plate assembly 64 situated on the lower end side is abutted against the abutting plate 28a provided on the side area of the support frame 25 so that the upward bending is made at a predetermined angle while preventing the downward rotation.
  • a user lying on the bed plate structure 61 has his or her body position moved or raised in a right/left direction by the rotation of the middle bed plate assembly 62 in the right/left direction at which time the lying user is prevented from dropping out of the bed plate structure 61 by the bending of the side bed plate assembly toward the upper side of the middle bed plate assembly 62.
  • rollers may be employed in place of the abutting plates 28a in which case bending is achieved by the abutting of the side bed plate assembly 64 against the rollers.
  • a raising/lowering motion drive mechanism 71 is provided at the intermediate portion of the length of the rotation frame 32 to raise and lower the bed plates 62a, and 64a of the bed plate assemblies 62 and 64 in the bed plate structure 61 as shown in FIG. 3.
  • the drive mechanism 71 comprises a box 72 incorporating a built-in power transmission mechanism, not shown, a pair of drive sources 73 provided one at each of side surfaces of the box 72, a first rotation shaft 74 provided on one end portion of the box 72 in a manner to extend through the opposed side portions of the box and adapted to be rotated by one of the paired drive sources 73 and a second rotation shaft 75 provided on the other end portion of the box 72 and extend through the opposed side portion of the box 72. Both the ends of each of the first and second rotation shafts 74 and 75 are rotatably supported by associated brackets 76.
  • First push-up arms 77 are fixed at one end to both the end portions of the first rotation shaft 74 and second push-up arms 78 are fixed at one end to both the end portions of the second rotation shaft 75.
  • the other end portions of each of the push-up arms 77 and 78 are rotatably mounted on associated roller 79.
  • the rollers 79 on the first push-up arms 77 are placed in rolling contact with the mounting frame 65a mounted on the bed plate 62a of the middle bed plate assembly 62 as shown in FIG. 10A and the rollers 79 on the second push-up arms 78 placed in rolling contact with the mounting frame 65c of the third bed plate 62c of the middle bed plate assembly 62.
  • the first rotation shaft 74 is rotated to allow the first push-up arms 77 to be rotated in the raised direction, the first bed plate 62a of the middle bed plate assembly 62 is moved up in the "raised” direction and, in this case, it is done in interlock with the first bed plate 64a of the side bed plate assembly 64.
  • the third bed plate 62c of the middle bed plate assembly 62 is rotated in a "raised” direction and it is done in interlock with the fourth bed plate 62d and bending is achieved in an upwardly convex dogleg-like manner.
  • the corresponding bed plates 64c and 64d of the side bed plate assemblies 64 are also moved in interlocking manner.
  • the rotation drive means 35 and raising/lowering drive means 71 are driven by a control device 101 as shown in FIG. 12.
  • the control device 101 has a control section 102 comprised of a CPU.
  • a remote controller 103 is connected to the control section 102.
  • a command signal for driving the drive means 35 and drive means 71 is input to the control section 102 by the remote controller 103.
  • a display unit 104 is connected to the control section 102 and the command signal selected by the remote controller 103 can be displayed, in graphics form, on the display unit 104.
  • the remote controller 103 can select an automatic operation and manual operation upon the rotation motion of the bed plate structure 61 and set the rotation motion angle, rotation motion cycle, etc., of the rotation operation.
  • the control section 102 delivers a rotation signal and back-raising signal from the control section 102.
  • a first mutual drive inhibiting circuit 105 is provided in the control section 102 to inhibit the simultaneous outputting of both the rotation motion signal and back-raising signal.
  • the drive circuit section 107 outputs a drive signal for driving the drive source 37 of the rotation drive means 35 and a drive signal for driving the pair of drive sources 73 of the raising/lowering motion drive means 71. By doing so, it is possible to effect the rotation motion drive and raising/lowering motion drive of the bed plate structure 61.
  • the control section 102 includes a preferential return circuit 108 for allowing the bed plate structure 61 to be driven from a raised state preferentially to a lying-down state in advance of the rotation motion drive and raising/lowering drive motion of the bed plate structure 61.
  • a return signal from the preferential return circuit 108 is input to the drive circuit section 107.
  • a drive signal is output from the drive circuit section 107 to cause the bed plate structure 61 to be driven in a direction toward a lying-down position. By doing so, the bed plate structure 61 causes the bed plate structure 61 to be driven in the lying-down direction by the drive source 73 of the drive means 71.
  • An initial state (horizontal state) at a time of rotating the bed plate structure 61 and initial state (flat state) at a time of raising/lowering the bed plate structure 61 are detected as shown in models in FIGS. 13A and 13B. That is, the former initial state is detected by first and second limit switches 111 and 112 provided on both width-direction ends at the lower surface of the middle bed plate assembly 62 of the bed plate structure 61. That is, with the bed plate structure 61 in a not-rotated horizontal state, the first and second limit switches 111 and 112 are pushed down by the rotation frame 32, that is, the rotation frame supporting the middle bed plate assembly 62, and placed in an ON state. With the bed plate structure 61 in the latter state (flat state), any one of these limit switches is turned ON and the other limit switch OFF.
  • the initial state at a time of raising/lowering the bed plate structure 61 is detected by third and fourth limit switches 113 and 114, that is, the third limit switch 113 turned ON by being pushed by the first push-up arm 77 for raising/lowering the first bed plate 62a when the first bed plate 62a is in the horizontal sate and the fourth limit switch 114 turned ON by being pushed by the second push-up arm 78 for raising/lowering the third bed plate 62c when the third bed plate 62c is in the horizontal state. That is, when the first bed plate 62a or the third bed plate 62c is raised from the flat state, the third or the fourth limit switch is placed in the OFF state.
  • the detection signals from the first to fourth limit switches 111 to 114 are input to the first mutual drive inhibiting circuit 106.
  • the first and second mutual drive inhibiting circuits 105 and 106 inhibit the rotation signal or the back-raising signal from being input to the drive circuit section 107, so that the bed plate structure 61 is driven in the other state. Further, if the bed plate structure 61 is to be placed both in the rotating state and in the raising state, it is driven neither in a rotating state nor in the raising state.
  • the bed plate structure 61 provided over the support frame 25 allows three operations: an up/down motion, a rolling motion in the width direction and a partial raising/lowering bed motion.
  • the raising/lowering drive mechanism 13 is operated, driving the drive shaft 15 in a projected direction.
  • the levers 6 are raised from the lying-down state through the pair of rotation shafts 5 connected at both the end portions to the levers 6 so that the rest frame 21 can be raised with the rotation of the levers 6.
  • the rotation frame 32 with the bed plate structure 32 placed thereon is provided over the upper side of the rest frame 21 with the support frame 25 interposed, these are raised as one unit.
  • the height level of the bed plate structure can readily be adjusted.
  • the bed plate structure 61 can be made adequately low so that he or she can readily be get into or out of the bed plate structure.
  • the drive source 37 of the rotation drive means 35 is operated to drive the link mechanism 40A.
  • the link mechanism 40A enables the third link 44 or fourth link 45 to be driven in the raised direction in accordance with the direction in which the movable body 38c of the drive source 37 is operated.
  • the rotation frame 32 With the fourth link 45 driven in the raised direction, the rotation frame 32 has its width-direction other-end side raised with the roller 51, that is, the roller engaged with the recess 29a of the receiving member 29 on the width-direction one-end side, as a fulcrum.
  • the bed plate structure 61 is operated in an interlocking manner. That is, the bed plate structure 61 has its middle bed plate assembly's other-end side is raised with the width-direction one-end side as a fulcrum as indicated by a phantom line in FIG. 8.
  • the one side bed plate assembly 64 connected to the width-direction one-end side of the bed plate structure has its lower surface abutted against the abutting plate 28a of the support frame 25 so that the one side bed plate assembly is bent upwardly.
  • the side bed plate assembly 64 connected to the other-end side of the bed plate structure is interlockingly moved in the same plane as that of the middle bed plate assembly 62.
  • the rotation frame 32 can be rotated in a direction reverse to that set out above.
  • the middle bed plate assembly 62 of the bed plate structure 61 can be rotated by the rotation frame 23 in an alternate right/left motion.
  • any user lying on the bed plate structure 61 can experience his or her body position change in the right/left direction.
  • Any user needing a long-term confinement in bed such as an ill or an elderly person, can prevent an onset of a bedsore.
  • the side bed plate assembly 64 connected to the width-direction one-end side, that is, the base end side, of the rotating middle bed plate assembly 62 is bent upwardly to provide an upwardly convex surface so that the user is prevented from dropping out of the bed plate structure when he or she experiences any body position change in the right or left direction.
  • the middle bed plate assembly 62 has the other-end side driven in the raised direction with the width-direction one-end side as a fulcrum. For this reason, the width-direction one-end side, that is, the lower end side, of the rotating middle bed plate assembly 62 is not displaced to a height level substantially lower than any support height level of the bed plate structure 61 and the middle bed plate assembly 62 can be rotated in such a manner. Even if the support height of the bed plate structure 61 is made enough low, the user can experience his or her body position change by rotating the middle bed plate assembly 62 in the right/left direction.
  • the support height of the bed plate structure is made enough low, the user, such as an ill or an elderly person in particular, can readily get into and out of the bed plate structure 61 without the help of any attendant or caretaker.
  • the paired engaging pins 52 on the support frame 25 engage with the associated steady grooves 50 at the retaining member 49 provided on the rotation frame 32 side so that the rotation frame 32 is prevented from being shaken in the right/left direction.
  • the bed apparatus is used with the rotation frame assembly 23 in the horizontal state, then the bed user never will suffer any discomfort which would other wise been involved due to the shaking of the bed frame structure 61 in the right/left direction. That is, even if the rotation frame 32 is so structured as to be rotated by the link mechanism 40a, the rotation frame 23 can be prevented from being shaken.
  • the engaging pins 52 are automatically brought into and out of engagement with the associated steady grooves 50 through the operation of the link mechanism 40A. For this reason, no specific extra operation is necessary and the bed apparatus is easier in operation and very advantageous.
  • the raising/lowering motion drive mechanism 71 is operated with the bed plate structure 61 in the horizontal position. That is, the paired drive source 73 is operated to enable the first and second rotation shafts 74 and 75 to be rotated at which time the push-up arms 77 and 78 are moved in an inter-locking manner.
  • the first bed plate 62a of the middle bed plate assembly 62 is raised as indicated by the phantom line in FIG. 1 and the first bed plates 64a of the paired side bed plate assemblies 64 are moved interlockingly so that the bed user can have his or her upper body half moved to a raised position.
  • the second push-up arms 78 driven in the raised direction, the third bed plate 62c of the middle bed plate assembly 62 is rotated with one end connected to the second bed plate 62b acting as a fulcrum, that is, rotated at the other end side in a raised direction so that the fourth bed plate 62d connected to the other-end side of the third bed plate is raised on its one-end side.
  • the third bed plate 62c and fourth bed plate 62d are bent in an upwardly convex, substantially dogleg-like manner and the third and fourth bed plates 64c and 64d of the paired side bed plates 64 are moved in an interlocking manner.
  • the user having his or her upper body half raised, is held in an upwardly leg-bent position by the third bed plates 62c and 64c and fourth bed plates 62d and 64d so that he or she can be held in upper half body-raised position comfortably and at ease.
  • step S1 With reference to a flow chart in FIGS. 14 and 15, explanation will be given below about the control under which the bed plate 61 is driven in rotation motion and in raising/lowering motion.
  • the preferential return circuit 108 in the control section 102 outputs a return signal to the drive circuit section 107 and, by the return signal, the drive source 73 of the drive means 71 drives the bed plate structure 61 preferentially in a lying-down direction.
  • step S4 it is decided whether or not, at step S4, the bed plate structure 61 is in the rotating state and, if it is in the rotating state, the rotation angle of the bed plate structure 61 is returned back to a zero angle state in step S5. That is, a rotation signal is output from the control section 102 and the drive source 37 of the rotation drive means 35 drives the bed plate structure 61 to set the latter to a zero rotation angle.
  • the first mutual drive inhibiting circuit 105 in the control section 102 and second mutual drive inhibiting circuit 106 outside the control circuit 102 inhibit the bed plate 61 from being driven either in the raising/lowering state or in the rotating state.
  • control section 102 includes the preferential return circuit 108, even if the first to fourth limit switches 111 to 114 for detecting the rotating state and raising/lowering state of the bed plate structure 61 detect the rotating state and raising state of the bed plate structure 61, the bed plate structure is driven preferentially from the raised state to the initial laying-down state by the return signal from the preferential return circuit 108.
  • step S5 When, at step S5, the bed plate structure 61 is returned back to both the flat and horizontal state, an automatic operation is done in an initially set automatic operation mode at step S5. That is, in order to prevent the onset of a bedsore in the bed user, the bed plate structure 61 is driven in rotation motion at an initially set rotation angle and rotation cycle.
  • step S7 it is decided whether or not the bed plate structure 61 is in the rotating state at a step S8 and, if the bed plate structure 61 is in the rotating state, the bed plate structure 61 is driven to the flat state at step S9. Then it is decided whether or not the bed plate structure 61 is in the lying-down (flat) state at step S10. If the bed plate structure 61 is in the not flat (raised) state, it is driven in the lying-down position as shown in step S11 and the automatic operation cycle is ended.
  • step S1 If, on the other hand, the manual operation is selected at step S1, four kinds of operations as shown in FIG. 15 can be selected by push buttons on the remote controller 103.
  • step S12 in the case where the bed plate structure 61 is set in the lying down state from the raised state as a first manual operation shown in step S12, the bed plate structure 61 is caused to be driven preferentially in the laying down direction. This is shown in step S13. Then it is decided whether or not the bed plate structure 61 is in the lying down (flat) position and, if YES, that operation is ended.
  • the bed plate structure 61 is set from the rotated state back to a horizontal state, it is caused to be driven preferentially in the lying down direction as shown at step S16 by a corresponding command signal from the preferential return circuit 108.
  • step S17 it is decided whether or not the bed plate structure 61 is set in the lying down (flat) state and, if it is confirmed as being flat, the bed plate structure 61 is driven in the horizontal direction by the drive source 37 of the rotation drive means 35 as shown in S18.
  • step S19 it is decided whether or not the bed plate structure 61 be set in a horizontal state. If YES, a second manual operation is ended.
  • the bed plate structure 61 is driven from its flat state toward a raised direction as shown in step S20, it is driven by a corresponding command signal toward the horizontal state as shown in step S21. It is decided, at step 22, whether or not the bed plate structure 61 is set horizontal and, if YES, the bed plate structure 61 is driven in a raised direction at step 23.
  • the bed plate structure 61 is rotated as shown in step S24, it is caused to be driven, by the preferential return circuit 108, preferentially toward the lying down (flat) position as shown in step S25. It is decided, at step S26, whether or not the bed plate structure 61 be set in the flat position. If YES, the rotation operation of the bed plate structure 61 is started as shown in step S27.
  • Step 28 corresponds to a manual operation stop command whereby, as shown in step S29, the manually operated bed plate structure 61 can be stopped at a predetermined raising angle or a rotation angle.
  • the bed plate structure 61 is driven from the raised state, by the preferential return circuit 108, preferentially toward the lying down state even in the presence of the first and second mutual drive inhibiting circuits 105 and 106.
  • the raised state of the bed plate structure 61 is released and the driving of the bed plate structure 61 is inhibited by the first and second mutual drive inhibiting circuits 105 and 106 under the control circuit. It is, therefore, possible to effect the raising operation and rotating operation of the bed plate structure 61.
  • the first mutual drive inhibiting circuit 105 is provided in the control section 102 and the second mutual drive inhibiting circuit 106 is provided outside the control section 102. For this reason, even if either one of these two mutual drive inhibiting circuits are erroneously operated, the other mutual drive inhibiting circuit serves as a back-up circuit so that the bed plate structure 61, being in a raising state, can be positively prevented from being driven in a rotating state.
  • the first mutual drive inhibiting circuit 105 in the control section 102 has a risk of being erroneously operated due to noise generated in the control section 102. It is, however, possible to, even under the operation error of the first mutual drive inhibiting circuit 105, positively prevent the raising bed plate structure 61 from being rotated by the second mutual drive inhibiting circuit 106.
  • the present invention is not restricted to the above-mentioned embodiment and can be variously changed or modified without departing from the spirit and scope of the present invention.
  • the mutual drive inhibiting circuits are provided one inside and one outside the control section, for example, it may be provided on either one of these sides.

Landscapes

  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)
EP19960120729 1996-06-21 1996-12-21 Dispositif de lit Expired - Lifetime EP0813853B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP162052/96 1996-06-21
JP16205296 1996-06-21
JP16205296A JP3362097B2 (ja) 1996-06-21 1996-06-21 ベッド装置

Publications (3)

Publication Number Publication Date
EP0813853A2 true EP0813853A2 (fr) 1997-12-29
EP0813853A3 EP0813853A3 (fr) 1998-05-13
EP0813853B1 EP0813853B1 (fr) 2002-05-29

Family

ID=15747187

Family Applications (1)

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EP19960120729 Expired - Lifetime EP0813853B1 (fr) 1996-06-21 1996-12-21 Dispositif de lit

Country Status (3)

Country Link
EP (1) EP0813853B1 (fr)
JP (1) JP3362097B2 (fr)
DE (1) DE69621432T2 (fr)

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EP0951892A2 (fr) * 1998-04-22 1999-10-27 Faram S.p.A. Lit pour institutions avec structure de sommier articulé et dispositif pour le mouvement et le contrÔle du sommier
EP0965320A3 (fr) * 1998-06-18 2000-09-06 Vauth-Sagel GmbH & Co. Grundstücksverwaltung Lit de malades ou de soins
EP1346669A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
EP1346666A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
EP1346667A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
EP1346668A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
ES2200663A1 (es) * 1996-11-11 2004-03-01 Flex Equipos De Descanso Sa Mejoras introducidas en la patente de invencion p9602367 por "tablero perfeccionado para su colocacion preferentemente en lechos de camas".
CN106137623A (zh) * 2016-08-08 2016-11-23 首都医科大学附属北京天坛医院 起坐翻身床
CN108524147A (zh) * 2018-04-27 2018-09-14 江苏赛康医疗设备股份有限公司 一种坐便盆驱动装置及其坐便床
CN111166582A (zh) * 2019-12-31 2020-05-19 肖梅 一种用于人员卧床检查的辅助翻动装置
CN113599152A (zh) * 2021-08-02 2021-11-05 中国人民解放军空军军医大学 一种picc置管床

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JP3638795B2 (ja) * 1998-07-13 2005-04-13 フランスベッド株式会社 背上げ式ベッド装置
JP2001161757A (ja) * 1999-12-07 2001-06-19 Marutaka Kogyo Kk ベッド
JP3357984B2 (ja) * 2000-01-14 2002-12-16 株式会社椿本チエイン ギャッヂベッドの電動装置及び電動ベッド
JP3715900B2 (ja) * 2001-04-06 2005-11-16 和夫 大場 いびき防止用安眠ベッド
JP2003010259A (ja) * 2001-07-03 2003-01-14 Kazuo Oba いびき防止用安眠ベッド
JP3862663B2 (ja) * 2002-03-18 2006-12-27 パラマウントベッド株式会社 ベッド等の仰臥台におけるボトムの昇降制御方法
CN100340222C (zh) * 2003-12-23 2007-10-03 郭平安 多功能防褥疮保健床
JP2005304820A (ja) * 2004-04-22 2005-11-04 Yutaka Denshi Seisakusho:Kk 寝返り支援ベッド
JP2006136635A (ja) * 2004-11-15 2006-06-01 Paramount Bed Co Ltd 複数機能を有するベッド及びその制御方法
CN101032440B (zh) * 2007-04-05 2011-09-28 上海品兴科技有限公司 多功能翻身床
WO2013077288A1 (fr) 2011-11-22 2013-05-30 パラマウントベッド株式会社 Dispositif de lit
DE102012217069A1 (de) * 2012-09-21 2014-03-27 Rössle & Wanner GmbH Unterfederung mit Verstellvorrichtung
JP6353824B2 (ja) * 2015-12-02 2018-07-04 フランスベッド株式会社 昇降用駆動装置及びベッド装置
JP6550414B2 (ja) * 2017-03-02 2019-07-24 フランスベッド株式会社 ベッド装置
JP2019097658A (ja) * 2017-11-29 2019-06-24 フランスベッド株式会社 ベッド装置
CN110381905B (zh) * 2017-03-02 2021-08-03 法兰西床株式会社 床装置
JP2019058575A (ja) * 2017-09-28 2019-04-18 フランスベッド株式会社 ベッド装置

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2200663A1 (es) * 1996-11-11 2004-03-01 Flex Equipos De Descanso Sa Mejoras introducidas en la patente de invencion p9602367 por "tablero perfeccionado para su colocacion preferentemente en lechos de camas".
EP0951892A2 (fr) * 1998-04-22 1999-10-27 Faram S.p.A. Lit pour institutions avec structure de sommier articulé et dispositif pour le mouvement et le contrÔle du sommier
EP0951892A3 (fr) * 1998-04-22 2000-05-31 Faram S.p.A. Lit pour institutions avec structure de sommier articulé et dispositif pour le mouvement et le contrôle du sommier
EP0965320A3 (fr) * 1998-06-18 2000-09-06 Vauth-Sagel GmbH & Co. Grundstücksverwaltung Lit de malades ou de soins
EP1346668A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
EP1346667A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
EP1346666A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
EP1346669A1 (fr) * 2002-03-18 2003-09-24 Paramount Bed Company Limited Procédé de réglage d'une embase de lit ou analogue
CN1302758C (zh) * 2002-03-18 2007-03-07 八乐梦医用床有限公司 床等仰卧台的底板的升降控制方法
CN106137623A (zh) * 2016-08-08 2016-11-23 首都医科大学附属北京天坛医院 起坐翻身床
CN108524147A (zh) * 2018-04-27 2018-09-14 江苏赛康医疗设备股份有限公司 一种坐便盆驱动装置及其坐便床
CN111166582A (zh) * 2019-12-31 2020-05-19 肖梅 一种用于人员卧床检查的辅助翻动装置
CN113599152A (zh) * 2021-08-02 2021-11-05 中国人民解放军空军军医大学 一种picc置管床
CN113599152B (zh) * 2021-08-02 2023-02-07 中国人民解放军空军军医大学 一种picc置管床

Also Published As

Publication number Publication date
JPH105286A (ja) 1998-01-13
EP0813853B1 (fr) 2002-05-29
EP0813853A3 (fr) 1998-05-13
JP3362097B2 (ja) 2003-01-07
DE69621432D1 (de) 2002-07-04
DE69621432T2 (de) 2003-01-30

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