EP1480590A1 - Lit reglable - Google Patents

Lit reglable

Info

Publication number
EP1480590A1
EP1480590A1 EP03709949A EP03709949A EP1480590A1 EP 1480590 A1 EP1480590 A1 EP 1480590A1 EP 03709949 A EP03709949 A EP 03709949A EP 03709949 A EP03709949 A EP 03709949A EP 1480590 A1 EP1480590 A1 EP 1480590A1
Authority
EP
European Patent Office
Prior art keywords
link mechanism
lead screw
bed
support arms
trolley
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.)
Withdrawn
Application number
EP03709949A
Other languages
German (de)
English (en)
Inventor
Stephen Hayes
Stephen Hollyoak
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.)
Huntleigh Technology Ltd
Original Assignee
Huntleigh Technology 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 Huntleigh Technology Ltd filed Critical Huntleigh Technology Ltd
Publication of EP1480590A1 publication Critical patent/EP1480590A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A61G7/002—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

Definitions

  • the present invention relates to a hospital bed or trolley platform and in particular to the means of varying the height of a bed or trolley platform, relative to the floor.
  • radius arms are widely used for the raising and lowering of bed/trolley platforms but can inhibit patient hoist access when the bed is at its lowest height. They also tend to produce shearing points, which can cause damage to fingers, cables etc. Radius arms are also difficult to clean due to the presence of rotating joints and stabilising links.
  • Linear motion columns and scissor mechanisms individually or in combination are also known in the hospital environment, for lifting trolleys and beds.
  • the combined mechanism relies on the column structure to provide stability and guidance, with the scissor mechanism purely providing the means of lift.
  • the scissor mechanism on its own does not provide adequate stability to support a bed/trolley platform.
  • the scissor mechanism is driven by a motor/gearbox mounted to the base of the column. This motor/gearbox drives a single- direction-threaded lead screw on which runs a threaded nut, which is attached to the centre pivot or arm of the middle pair of scissor arms.
  • the column structure is in three telescopic sections, with each section attached to different parts of the scissor mechanism. Thereby the sections of the column are driven upward as the scissor mechanism extends .
  • the mechanism does not have a very short closed length.
  • the aim of this invention is to provide a direct linear motion column in a compact form with minimum possible closed height to lift the platform, whilst providing a range of heights equivalent to existing bed mechanisms.
  • the present invention provides a platform comprising a lower frame supporting an upper frame carrying the platform, at least one pivotally interconnected scissor action link mechanism interconnecting the lower frame with the upper frame for moving the upper frame parallel to the lower frame between a lowered and a raised position, the link mechanism including at least a first and a second pair of pivotally interconnected support arms, the first pair of support arms being slidably arranged on the lower frame and the second pair of support arms being vertically arranged between the first pair of support arms and the upper frame, an electric motor drive system containing an electric motor and a lead screw, the lead screw being rotatable by the motor, the lead screw having one half threaded as a right-hand thread and the other half threaded as a left-hand thread, nut elements arranged on the adjacent interconnecting arms of the first and second pairs of support arms, the nut elements respectively being mounted on each half of the lead screw for travelling therealong, rotation of the lead screw by the motor adjusting the elevation of the link mechanism as the nut elements travel
  • the link mechanism consists of a pair of interlocking support arms, each of the arms of substantial width in relation to its length, to provide rigidity and stability to the mechanism.
  • the support arms are hinged together with close-fitting, full- width pivot pins, in order to minimise free play within the link mechanism.
  • the first and second support arms are slidably arranged at the upper and lower frames respectively by brackets such that one nests inside the other, when the scissor link mechanism is fully retracted.
  • the respective brackets each interlock with a central cover to prevent ingress of dirt and air when the link mechanism is extended.
  • the brackets and central cover thereby conveniently comprise the link mechanism housing.
  • the housing can comprise a plurality of sections interlocking together. Since the scissor mechanism provides the rigidity and stability, the interlocking sections of the housing act purely as protection against ingress of particles and fluid. Therefore these sections only need to just overlap one another and therefore the closed height can be greatly reduced unlike the prior art columns.
  • the motor of the electric drive mechanism is prevented from rotating in relation to the link mechanism via a contact block abutting the inside faces of the adjacent interconnected support arms.
  • a bed/trolley platform is raised and lowered by means of a pair of scissor link mechanisms having a housing, one mounted at each end of the bed/trolley platform.
  • Figure 1 is a schematic view of a bed having columns according to the invention
  • Figure 2 is a side view of the column and scissor link mechanism according to the invention in the extended position
  • Figure 3 is a side view of the column and scissor link mechanism according to the invention in the retracted position.
  • the bed 1 comprises a platform 8 mounted on an upper frame 10 and supported on a lower frame 12 by two telescopic columns 14 housing a scissor link mechanism.
  • the columns 14 support the platform at the foot end and at the head end of the bed. It is possible to have only one central column 14 supporting the platform or four columns 14, two at the foot end and two at the head end.
  • the columns 14 are all identical.
  • FIG. 2 shows the structure of the scissor mechanism within a column 14.
  • the scissor link mechanism is driven by motors 15 to raise and lower the platform 8 relative to the lower frame 12.
  • the scissor link mechanism consists of two pairs of interlocking arms 16a, 16b, each arm 16a, 16b of substantial width in relation to its length in order to provide rigidity and stability to the mechanism.
  • the four arms 16a, 16b are hinged together with close-fitting, full- width pivot pins 18, in order to minimise free play within the mechanism.
  • the lower arms 16a of the scissor mechanism are mounted to a base bracket 21, via a pivot to a sliding carriage 22, again via a pivot.
  • the sliding carriage 22 mounted to guide-rails 25 rigidly fixed to the base bracket 21.
  • the upper arms 16b of the scissor mechanism are mounted to an upper bracket 26 in a similar fashion. Therefore, as the scissor mechanism is extended, the upper bracket 26 and lower bracket 21 are driven apart.
  • the slide mechanisms 22, 25 at the ends of the upper and lower arm pairs 16a, 16b allow for the horizontal change in centres that occurs as the scissor mechanism is extended.
  • the scissor mechanism is extended by means of a lead screw 31 driven by a motor/gearbox unit 15.
  • This lead screw has one half threaded as a right-hand thread and the other half threaded as a left-hand thread.
  • Two matching threaded nuts 33, 34 are mounted to each half of the lead screw.
  • One of the nuts 33 is mounted to one of the upper support arms 16a and the second nut 34 is mounted to other interconnected lower support arm 16b.
  • the nuts 33, 34 are free to rotate in axes parallel to the pivot pins 18 connecting the arms 16a, 16b. Therefore, as the lead screw 31 is rotated one way by the motorl5, the nuts 33, 34 are driven apart thereby extending the scissor mechanism. When the lead screw 31 is rotated in the opposite direction, the nuts 33, 34 are driven toward one another thus retracting the scissor mechanism.
  • the column housing 14 consists of the upper 26 and lower 21 brackets and a central cover 28 inbetween.
  • the central cover 28 is free to slide in relation to both the upper and lower brackets.
  • the upper edge 41 of the cover 28 engages with an inner rim 42 at the lower edge of the upper bracket 26 and similarly, the upper edge of the lower bracket 21 engages with an inner rim of the cover 28.
  • the cover 28 cooperates with the upper and lower brackets 26, 21 to bridge the intervening gap upon any extension of the scissor mechanism.
  • the cover 28 may include one or more interlocking parts .
  • the upper bracket 26 and cover 28 nest within the lower bracket 21 to provide a very low minimum height upon retraction of the scissor mechanism.
  • Positional feedback of the height of the platform 1 can be either via devices mounted directly to the rotor of the motors 15 or geared off the rotor. Alternatively, feedback could be achieved by measuring the rotation of any of the pivots 18 in the mechanism or measuring linear displacement of any part of the mechanism in relation to a fixed point on either of the mounting brackets.
  • Our preferred embodiment uses a pair of columns 14 at each end of the bed/trolley platform, the invention is equally applicable where a single column, mounted near to the centre of the platform, would be preferable.
  • These applications may include specialist beds, trolleys and examination/therapy couches.

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)

Abstract

L'invention concerne un lit/chariot (1) qui comprend une plate-forme (8) portée par des pieds télescopiques (14) renfermant des systèmes de liaison à ciseaux. Deux écrous filetés assortis (33, 34) sont montés à la fois sur chaque moitié d'une vis-mère (31) entraînée par un moteur (15), et sur les bras de support (16a, 16b) du système de liaison à ciseaux. La vis-mère (31) comporte une moitié droite filetée et une moitié gauche filetée opposée. Lorsque la vis-mère (31) tourne dans un sens, les écrous (33, 34) s'écartent, déployant ainsi le système de liaison à ciseaux. Lorsque la vis-mère tourne dans le sens opposé, les écrous (33, 34) se rapprochent l'un de l'autre, repliant ainsi le système de liaison à ciseaux. Les pieds (14) comportent des supports de fixation de liaison à ciseaux (21, 26) par rapport auxquels une enveloppe centrale (28) coulisse, abaissant ainsi l'ensemble lorsque le système de liaison à ciseaux est replié.
EP03709949A 2002-03-07 2003-03-03 Lit reglable Withdrawn EP1480590A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0205393 2002-03-07
GB0205393A GB2386062B (en) 2002-03-07 2002-03-07 Adjustable bed
PCT/GB2003/000889 WO2003073974A1 (fr) 2002-03-07 2003-03-03 Lit reglable

Publications (1)

Publication Number Publication Date
EP1480590A1 true EP1480590A1 (fr) 2004-12-01

Family

ID=9932515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03709949A Withdrawn EP1480590A1 (fr) 2002-03-07 2003-03-03 Lit reglable

Country Status (5)

Country Link
EP (1) EP1480590A1 (fr)
AU (1) AU2003214379A1 (fr)
GB (1) GB2386062B (fr)
TW (1) TW200304803A (fr)
WO (1) WO2003073974A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907441A1 (fr) * 2006-10-20 2008-04-25 Rotobloc Psp Sarl Table elevatrice a ciseau.
CN108590272A (zh) * 2018-04-25 2018-09-28 扬州大学 一种立体车库电动剪式升降台
WO2022094764A1 (fr) * 2020-11-03 2022-05-12 唐山圣因海洋科技有限公司 Dispositif d'entreposage doté d'une fonction de levage et procédé associé

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DE102004016728A1 (de) * 2004-04-05 2005-10-13 Siemens Ag Hebevorrichtung
WO2008052564A1 (fr) * 2006-11-03 2008-05-08 Linak A/S Colonne élévatrice pour les lits d'hôpitaux ou de soin
FR2951372B1 (fr) 2009-10-20 2011-12-09 Hill Rom Sas Lit d'hopital ou d'hebergement a plan de couchage reglable
DE102012006192B4 (de) * 2012-03-27 2018-01-25 Drägerwerk AG & Co. KGaA Wärmetherapiegerät
KR101461282B1 (ko) * 2012-11-21 2014-11-20 경기도 구급 이송용 들것 모듈
DE202013004323U1 (de) * 2013-05-10 2013-06-11 Kesseböhmer Holding e.K. Höhenverstellbares Möbel
CN104176675B (zh) * 2013-10-30 2015-06-10 上海联影医疗科技有限公司 一种伸缩式支撑结构和病床升降机构
CN104173050B (zh) * 2014-07-08 2015-06-10 上海联影医疗科技有限公司 垂直升降机构、升降病床、医疗检查设备
CN104739594A (zh) * 2015-03-27 2015-07-01 苏州市天烨医疗设备有限公司 医用升降装置
CN105858555A (zh) * 2016-06-20 2016-08-17 泰州格灵电器制造有限公司 一种空气能热泵外机安装举托器
CN106379834A (zh) * 2016-11-24 2017-02-08 华南理工大学 一种可升降移动机器人
US11679046B2 (en) * 2019-11-04 2023-06-20 GE Precision Healthcare LLC Method and system for providing dual axes motions using a single drive
AT523540B1 (de) * 2020-05-28 2021-09-15 Fank Harald Höhenverstellbares Bett, verwendbar als Polstermöbel
CN112550627A (zh) * 2020-12-07 2021-03-26 沪东中华造船(集团)有限公司 一种船舶管系安装的平台支撑方法
CN114310999B (zh) * 2022-01-04 2024-03-29 深圳爱络凯寻科技有限公司 一种智能连体机器人夹持机构伸缩调整机构
CN114344005A (zh) * 2022-01-21 2022-04-15 毕威泰克(浙江)医疗器械有限公司 医用病床
CN114856274B (zh) * 2022-03-11 2023-07-28 浙江镭蒙科技有限公司 一种立体车库用防坠落的固定举升机

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GB193230A (en) * 1922-01-11 1923-02-22 George Herbert Cuming Butler Improvements relating to lifting jacks
US2587094A (en) * 1948-01-26 1952-02-26 Nels O Berg Adjustable hospital table
DE2607751A1 (de) * 1976-02-26 1977-09-01 Ritter Ag Dentalstuhl
FI65761C (fi) * 1981-09-03 1984-07-10 Elevator Gmbh Teaterscen
US4449262A (en) * 1981-09-08 1984-05-22 Siemens Medical Laboratories, Inc. Medical couch incorporating a lifting mechanism
US4457403A (en) * 1982-09-16 1984-07-03 Up-Right, Inc. Self-propelled elevating work platform
US4638610A (en) * 1983-03-03 1987-01-27 Elevator Gmbh Theatrical stage
US4943034A (en) * 1987-04-24 1990-07-24 Wagnon Power Jack, Inc. Power jack and method
FR2780638B1 (fr) * 1998-07-01 2000-09-29 Hill Rom Sas Lit de soins a ensemble de colonnes telescopiques
DE20116130U1 (de) * 2001-10-01 2001-12-13 Koetter Helmut Hubsäule für ein Kranken- und Pflegebett
DE20118952U1 (de) * 2001-11-20 2002-02-14 Koetter Helmut Hubsäule für Kranken- oder Pflegebetten

Non-Patent Citations (1)

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Title
See references of WO03073974A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907441A1 (fr) * 2006-10-20 2008-04-25 Rotobloc Psp Sarl Table elevatrice a ciseau.
CN108590272A (zh) * 2018-04-25 2018-09-28 扬州大学 一种立体车库电动剪式升降台
WO2022094764A1 (fr) * 2020-11-03 2022-05-12 唐山圣因海洋科技有限公司 Dispositif d'entreposage doté d'une fonction de levage et procédé associé

Also Published As

Publication number Publication date
GB2386062B (en) 2004-04-28
WO2003073974A1 (fr) 2003-09-12
GB2386062A (en) 2003-09-10
TW200304803A (en) 2003-10-16
GB0205393D0 (en) 2002-04-24
AU2003214379A1 (en) 2003-09-16

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