EP1871323B1 - Lit de soins comportant a un entrainement a deux moteurs - Google Patents

Lit de soins comportant a un entrainement a deux moteurs Download PDF

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Publication number
EP1871323B1
EP1871323B1 EP06723644A EP06723644A EP1871323B1 EP 1871323 B1 EP1871323 B1 EP 1871323B1 EP 06723644 A EP06723644 A EP 06723644A EP 06723644 A EP06723644 A EP 06723644A EP 1871323 B1 EP1871323 B1 EP 1871323B1
Authority
EP
European Patent Office
Prior art keywords
nursing bed
bed according
electric motors
motors
lever
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.)
Not-in-force
Application number
EP06723644A
Other languages
German (de)
English (en)
Other versions
EP1871323A1 (fr
Inventor
Hans-Peter Barthelt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PL06723644T priority Critical patent/PL1871323T3/pl
Publication of EP1871323A1 publication Critical patent/EP1871323A1/fr
Application granted granted Critical
Publication of EP1871323B1 publication Critical patent/EP1871323B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/16—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto converting a lying surface into a chair
    • 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
    • A61G7/018—Control or drive mechanisms
    • 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
    • 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
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/053—Aids for getting into, or out of, bed, e.g. steps, chairs, cane-like supports
    • 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
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1073—Parts, details or accessories
    • A61G7/1076—Means for rotating around a vertical axis

Definitions

  • a nursing bed which has a height-adjustable lift, which is arranged on the mattress frame.
  • the mattress frame with the patient lying thereon is to be brought from the normal bed height into a care height which makes it easier for the personnel to carry out manipulations on the patient in need of care.
  • the known bed has an electric motor which drives a screw via a worm gear.
  • the jackscrew extends between the lifter base and the lifter head to extend the lifter accordingly in height.
  • the drive is self-locking.
  • the electric motor itself is a low voltage DC motor.
  • the supply voltage is approx. 24 volts DC.
  • the EP 1 312 330 A1 describes a nursing bed with a height-adjustable base with a so-called scissor lift.
  • the base has a top and a bottom frame, which are connected to each other via two scissors on both sides of the bed.
  • two Spindelhubmotoren are provided extending between the lower and a cross member, which is inserted between two struts of the two scissors.
  • the document does not specify how to control the load distribution between the motors and how to prevent the unbalanced load on the bed from causing the other motor, which is less loaded, to increase the tilt of the upper frame.
  • the nursing bed according to the invention has a height-adjustable lift.
  • two electric motors are provided, which work kinematically in parallel. Since these electric motors are self-locking due to the threaded spindle drive, if no countermeasures are taken, tensions can occur which damage the bed and the motors. Because of the stiffness of the lever mechanism of the base to meet this small path differences of the electric motors.
  • the two electric motors are electrically connected in series in the nursing bed according to the invention.
  • FIG. 1 shows in a perspective view a nursing bed 1 in the lying position, while FIG. 2 the nursing bed 1 in the seat or chair position reproduces.
  • the nursing bed 1 has a Bettumrandung 2 with a head part 3, a foot part 4 and side walls 5 and 6.
  • the viewer facing side wall 5 is located in the reclining position as illustrated at a distance from the floor, whereby there is a gap between the lower edge of the side wall 5 and the floor, which allows the nursing staff to deliver the toes under the bed.
  • the side wall 5 is movably mounted and arrives in the chair position of the nursing bed 1 in a downwardly shifted position, like this FIG. 2 lets recognize.
  • the special storage of the side wall 5 is for example in detail in the DE 199 12 937 A1 explained.
  • To the bed lifter 7 include a height-adjustable base 8, on the head of a rotary hinge 9 is fixed with a vertical axis of rotation, an intermediate frame 10, and a reclining frame 11, on which a mattress 12 is located.
  • the reclining frame 11 is rectangular in plan view.
  • the reclining frame 11 is divided into a central portion 13 which is fixedly connected to the intermediate frame 10, a back portion 14 which is hinged to the central portion 13, a thigh portion 15 which is also hinged to the central portion 13, and a lower leg portion 16.
  • Der Lower leg portion 16 is hinged to the remote from the central portion 13 end of the thigh portion 15.
  • the hinge axes about which the sections 14, 15, 16 are movable relative to the central section 13 are horizontal.
  • the foot frame 11 still has a foot portion 17 which is rigidly connected directly to the base 8.
  • the central portion 13 of the reclining frame 11 has two parallel to each other longitudinal bars 18, which are spaced apart according to the width of the nursing bed 1. Because of the lateral view, the visible longitudinal spar 18 conceals the associated longitudinal spar of the central section 13 lying behind it.
  • the back portion 14 is bounded by a spar 19 and another parallel spar, which, because of the representation in FIG. 3 can not be seen.
  • the spar 19 is hinged to the spar 18 while the other concealed spar is connected to the longitudinal spar 18 parallel to the longitudinal beam.
  • the two spars 19 of the back portion 14 are connected to each other via a not visible in the figure cross member at the upper end at 20.
  • a further transverse strut 21 connects the two longitudinal members 19 at the bottom.
  • the thigh portion 15 is limited by two longitudinal beams, of which only a longitudinal beam 22 can be seen.
  • the other longitudinal spar is covered by the longitudinal spar 22.
  • the two longitudinal struts 22 are connected by a transverse strut 23.
  • the cross strut 26 extends approximately at the center of each longitudinal spar 22 at the bottom.
  • the lower leg portion 16 is bounded by two longitudinal beams, of which in turn only the longitudinal beam 24 can be seen in the figure.
  • the two longitudinal beams 24 are connected to each other at the lower end at 25 via an unrecognizable transverse strut.
  • the two longitudinal bars 24 are connected by a strut 26, are fastened to the two mutually parallel guide rails 27, which extend to the end 25. They extend as shown at an angle to the longitudinal beam 24 and Although so that they converge toward the foot 25 towards.
  • the distance between the two guide rails 27 is significantly smaller than the distance between the two longitudinal beams 24. Opposite these, the guide rails 27 are offset approximately 20 cm inwards.
  • All longitudinal bars 18, 19, 22, and 24 bear towards the center of the bed pointing pins to this rubber molded parts with the longitudinal beams 18, 19, 22, and 24 to connect anchoring spring rods in a known manner, which extend across the width of the reclining frame 11 ,
  • the hinges connecting adjacent longitudinal beams 18, 19, 22, 24 on each side of the bed 1 are shown schematically at 29, 30 and 31.
  • the lower leg portion 16 may be raised or lowered via an unillustrated electric motor.
  • the electric motor is coupled by a gear 32 and is located in the intermediate frame 10th
  • Another electric motor 33 is supported in the intermediate frame 10 and leads to the cross brace 21. In this way, the back portion 14 can be raised or lowered.
  • the two longitudinal members 18 of the central part 13 are rigidly connected to the intermediate frame 10.
  • the intermediate frame 10 is composed of a square frame welded together square tubes, of which only a square tube 34 can be seen.
  • the parallel square tube is hidden by the square tube 34.
  • the rectangular frame is narrower than the distance between the longitudinal members 18 corresponds to each other.
  • a total of four arms 35 are welded, of which two each carry a longitudinal beam 18.
  • the booms 35 are horizontal and perpendicular to the longitudinal axis of the nursing bed. 1
  • the rotary hinge 9 connects the intermediate frame 10 with the height-adjustable base 8. It consists of a ring 36 and a rotatably mounted in the ring 34 turntable 37 together. The fifth wheel 37 is bolted to the intermediate frame 10 via screws, not shown.
  • the exact structure of the rotary hinge 9 is in the DE 102 50 075 A1 which is incorporated herein by reference.
  • To the height-adjustable base 8 include an upper frame 39 and a frame 41, which consist of correspondingly welded together square tubes, of which two mutually parallel square tubes longitudinal bars 39a and 41a form. Over a total of four toggle lever pairs 42 and 43, the upper frame 39 is supported on the lower frame 41. The rotary hinge 9 is connected to the upper frame 39.
  • the knee lever pairs 42, 43 are each located next to a longitudinal side of the base 8, so that the corresponding knee lever pairs 42, 43 on the other longitudinal side in the side view of FIG. 3 are not recognizable.
  • the toggle lever pair 42, 43 is composed of an upper toggle lever 44 and a lower toggle 45.
  • Each toggle lever 42, 43 is articulated to the upper and lower frames 39, 41, respectively, via a horizontal axis hinge 46 on the bed side concerned. All axes of the hinges 46 are parallel to each other.
  • the hinges 46 are coaxial with their axes to the axes of the hinges of the unrecognizable toggle 42, 43.
  • Hinges 47 connect the toggle pairs 42, 43 to the lower frame 41.
  • the axes of the hinges 47 are parallel to the axes of the hinges 46, with the axes of hinges 46, 47 corresponding to each other on both sides coaxial with each other.
  • the two toggle pairs 42, 43 on each side of the base 8 are each coupled by an associated horizontal coupling strut 48 with each other.
  • Each coupling strut 48 is, as shown, hingedly connected to the knee joint 49 of each toggle lever pair 42,43.
  • Fig. 3 For adjusting the height of the lifter 8 are according to Fig. 3 two Spindelhubantriebe 52 and 53 are provided.
  • To the Spindelhubantrieb 52 includes a permanently energized electric motor 54a and a worm gear included in a transmission case 55a.
  • To the gear housing 55a of the worm gear is followed by an outer telescopic tube 56a, in which an inner telescopic tube 57a is guided longitudinally displaceable.
  • the inner telescopic tube 57a is reciprocated in a known manner by means of a screw spindle contained therein.
  • the inner telescopic tube 57a is pivotably anchored via a lug 58 to a lower transverse beam 59.
  • the cross-beam 59 extends adjacent to the shaft 51, i. next to the lower ends of the two toggle arms 45.
  • a further connecting fork 61a is provided in extension of the inner telescopic tube 57a.
  • This connecting fork 61a is pivotally anchored to a tab 62.
  • the tab 62 is seated on a cross-beam 63 which extends between the longitudinal beams 39a of the upper lifter frame 9.
  • the Spindelhubantrieb 53 is mechanically parallel to the Spindelhubantrieb 52 and is constructed of the same components, which is why the structural and structural elements occurring there are provided with the same reference numeral and the addition b.
  • the Spindelhubantrieb 53 extends between tabs 64 and 65, which are provided on the lower cross member 59 and the upper cross member 63.
  • the electric motors 54a and 54b and the two Spindelhubantriebe 52 and 53 are permanently excited DC motors. Their power supply via two two-pin connection cable 66a and 66b.
  • two electrical connections 67a and 68a belong to the spindle lifting drive 52 and the electrical connections 67b and 68b to the other spindle lifting drive 53.
  • the two electric motors 54a and 54b are electrically connected in series, i. the motor power input 68a is connected to the motor power input 67b.
  • the motor current input 67a leads to a movable contact of a key switch 69, while the power input 68b is connected to a movable contact of another key switch 70.
  • Their normally closed contacts 71 and 72 are connected together to a terminal 73 of a voltage or current source 74.
  • the two key switches 69 and 70 also have working contacts 75 and 76, which are also galvanically connected to each other and are connected to a second terminal 77 of the voltage source 74.
  • the position shown is the rest position of the two key switches 69, 70 and causes the two electric motors 54a and 54b of the Spindelhubantriebe 52, 53 are de-energized.
  • the power input 67a of the series connection of the two electric motors 54a and 54b is connected to the terminal 77 of the DC power source 74, while the other power terminal 68b is connected to the terminal 73.
  • the two Spindelhubantriebe 52, 53 for example, in the sense of extending or stretching the lifter 8, so in the same direction, set in motion.
  • the power input 68b is connected to the terminal 77 in the voltage source 74, while the current input 67a of the series connection of the two Spindelhubantriebe 52 and 53 remains connected to the terminal 77 of the voltage source 74.
  • the series connection of the two Spindelhubantriebe 52, 53 are set, for example, in the sense of retraction of the lifter 8 in motion.
  • the spindle lifting drive 52 upon actuation, for example, of the pushbutton 69 in terms of lifting, the spindle lifting drive 52 is in a position in which it would lead the spindle lifting drive 53. Such a situation may occur, for example, when the lifter 8 starts from the lower mechanical end position.
  • the Vorauseilen first leads to an increased load transfer compared to the Spindelhubantrieb 53. Due to the higher load on the Spindelhubantriebs 52, the speed of the driving associated electric motor 54a slightly smaller than the rotational speed of the other electric motor 54b. As a result, the back EMF generated by the armature of this motor 54a is smaller than the back EMF of the armature of the electric motor 54b.
  • both motors 54a, 54b are to generate the same force, the motors 54a, 54b must also largely coincide with respect to the design details relevant to the force generation and flywheel masses.
  • the direction of rotation does not matter. It is useful to achieve maximum utilization when the rated voltage of each of the two Spindelhubantriebe 52, 53 is half as large as the output voltage of the power source 74th
  • the invention is described in connection with a rotatable care bed. It is understood, however, that dispensed with the rotation and the invention can also be applied to a normal nursing bed.
  • two drive motors are used in the height-adjustable lift.
  • the two drive motors are installed mechanically parallel. In order to obtain a symmetrical load distribution between the two motors, they are electrically connected in series and are supplied as a series connection from a common voltage source.

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  • 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)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Control Of Multiple Motors (AREA)

Claims (12)

  1. Lit de soins (1) qui comprend :
    - un élévateur (8) réglable en hauteur,
    - un premier et un second moteur électrique (54) qui servent à déplacer l'élévateur, ces deux moteurs agissant mécaniquement en parallèle et étant reliés électriquement en série,
    - une source de courant (74) qui sert à alimenter les moteurs électriques (54).
  2. Lit de soins selon la revendication 1, caractérisé en ce que chaque moteur électrique (54) présente une sortie d'entraînement à vis filetée.
  3. Lit de soins selon la revendication 1, caractérisé en ce que les moteurs électriques (54) sont des moteurs à courant continu, alimentés en permanence.
  4. Lit de soins selon la revendication 1, caractérisé en ce que la tension nominale de chaque moteur électrique (54) est égale à la moitié de la tension nominale de la source de courant (74).
  5. Lit de soins selon la revendication 1, caractérisé en ce que les deux moteurs électriques (54) sont construits de la même manière.
  6. Lit de soins selon la revendication 1, caractérisé en ce que chaque moteur électrique (54) entraîne un mécanisme à broche filetée.
  7. Lit de soins selon la revendication 6, caractérisé en ce que les mécanismes à broche filetée ont la même construction.
  8. Lit de soins selon la revendication 1, caractérisé en ce qu'entre la source de courant (74) et chaque moteur électrique (54) est monté un circuit de commande (69, 70) par lequel peut être modifiée la polarité du courant adressé au moteur électrique (54) correspondant.
  9. Lit de soins selon la revendication 8, caractérisé en ce que chaque circuit de commande (69, 70) est équipé d'un commutateur à commande manuelle par lequel le courant adressé au moteur électrique (54) correspondant peut à partir de l'état de coupure, présenter une polarité ou la polarité opposée.
  10. Lit de soins selon la revendication 8, caractérisé en ce que le circuit de commande (69, 70) présente une sortie commune pour les deux moteurs électriques (54).
  11. Lit de soins selon la revendication 1, caractérisé en ce que l'élévateur (8) présente un pied d'élévateur (41) et une tête d'élévateur (39).
  12. Lit de soins selon la revendication 11, caractérisé en ce que le pied d'élévateur (41) et la tête d'élévateur (39) présentent respectivement des barres d'articulation de moteur (59, 63) qui sont parallèles, et les deux entraînements à filetage (52, 53, 54) des moteurs électriques sont ancrés par une extrémité sur la barre d'articulation de moteur (59) et par l'autre extrémité sur l'autre barre d'articulation de moteur (63).
EP06723644A 2005-04-21 2006-03-23 Lit de soins comportant a un entrainement a deux moteurs Not-in-force EP1871323B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06723644T PL1871323T3 (pl) 2005-04-21 2006-03-23 Łóżko rehabilitacyjne z napędem wyposażonym w dwa silniki

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005018686A DE102005018686B4 (de) 2005-04-21 2005-04-21 Pflegebett mit Doppelmotorantrieb
PCT/EP2006/002652 WO2006111239A1 (fr) 2005-04-21 2006-03-23 Lit de soins comportant a un entrainement a deux moteurs

Publications (2)

Publication Number Publication Date
EP1871323A1 EP1871323A1 (fr) 2008-01-02
EP1871323B1 true EP1871323B1 (fr) 2010-07-21

Family

ID=36498829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723644A Not-in-force EP1871323B1 (fr) 2005-04-21 2006-03-23 Lit de soins comportant a un entrainement a deux moteurs

Country Status (11)

Country Link
US (1) US20090038074A1 (fr)
EP (1) EP1871323B1 (fr)
JP (1) JP4889727B2 (fr)
CN (1) CN101175462B (fr)
AT (1) ATE474540T1 (fr)
AU (1) AU2006237045A1 (fr)
CA (1) CA2605123A1 (fr)
DE (2) DE102005018686B4 (fr)
DK (1) DK1871323T3 (fr)
PL (1) PL1871323T3 (fr)
WO (1) WO2006111239A1 (fr)

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CN112386047A (zh) * 2019-08-15 2021-02-23 麒盛科技股份有限公司 一种三折叠电动床
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DE10215395C1 (de) * 2002-04-08 2003-10-23 Eckhard Bangemann Pflegebett
DE10250075A1 (de) * 2002-10-25 2004-05-13 Hans-Peter Barthelt Drehbett mit verbessertem Drehscharnier
WO2004057122A1 (fr) * 2002-12-23 2004-07-08 Jacking Systems Limited Systeme de levage de dalles en beton
DE10341705B4 (de) * 2003-09-10 2016-06-09 Dewertokin Gmbh Anordnung zum Betrieb eines elektrisch verstellbaren Sitz- und/oder Liegemöbels
DE102004019144B3 (de) * 2004-04-21 2005-09-22 Barthelt, Hans-Peter, Dipl.-Ing. Pflegebett mit verbessertem Heber

Also Published As

Publication number Publication date
DK1871323T3 (da) 2010-11-22
JP2008536590A (ja) 2008-09-11
CN101175462B (zh) 2011-04-20
CA2605123A1 (fr) 2006-10-26
AU2006237045A1 (en) 2006-10-26
DE102005018686A1 (de) 2006-11-02
CN101175462A (zh) 2008-05-07
ATE474540T1 (de) 2010-08-15
PL1871323T3 (pl) 2010-12-31
WO2006111239A1 (fr) 2006-10-26
DE102005018686B4 (de) 2007-03-22
DE502006007481D1 (de) 2010-09-02
EP1871323A1 (fr) 2008-01-02
US20090038074A1 (en) 2009-02-12
JP4889727B2 (ja) 2012-03-07

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