WO1987007830A1 - Steering device for a bed - Google Patents

Steering device for a bed Download PDF

Info

Publication number
WO1987007830A1
WO1987007830A1 PCT/SE1987/000277 SE8700277W WO8707830A1 WO 1987007830 A1 WO1987007830 A1 WO 1987007830A1 SE 8700277 W SE8700277 W SE 8700277W WO 8707830 A1 WO8707830 A1 WO 8707830A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
bed
steering
floor
gable
Prior art date
Application number
PCT/SE1987/000277
Other languages
French (fr)
Inventor
Sture Norelius
Original Assignee
Sture Norelius
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 Sture Norelius filed Critical Sture Norelius
Publication of WO1987007830A1 publication Critical patent/WO1987007830A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
    • A47C19/021—Bedstead frames
    • A47C19/024—Legs
    • 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
    • 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
    • A61G7/0528—Steering or braking devices for castor wheels
    • 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
    • A61G7/08—Apparatus for transporting beds

Definitions

  • the present invention concerns a steering device for a bed including a mainly rectangular frame provided whith four upright members arranged mainly at each corner of the frame.
  • Each upright member is provided with a wheel, e.g. a freely, around a vertical axis swivelling caster wheel.
  • the american patent publication US 4 300 782 shows a bed whith four wheels, of which three are freely swivelling caster wheels and a fourth is a caster wheel to be steered.
  • this steering device does not ad- mit a disengagement of the steering wheel in that way that the bed can be handled on four freely swivelling caster wheels. None of the wheels can be raised or lo ⁇ wered in that way that the bed can be lowered on suppor ⁇ ting upright members resting upon the floor.
  • the purpose whith the present invention is to eliminate the drawbacks whith the existing bed designs.
  • the purpose has been achieved by the present invention, which concerns a steering device for a bed including a mainly rectangular frame provided whith four upright mem ⁇ bers arranged mainly at each corner of the frame, whereby each upright member is provided whith a wheel, e.g. a freely, around a vertical axis swivelling caster wheel.
  • the invention is characterised in that a fifth steering wheel is arranged at one gable of the bed closed to one of the other wheels of the bed, that the fifth wheel can be raised and lowered mainly in a vertical direction by help of a raising and lowering device, that the support point on the floor of the fifth wheel can be brought into a position below the support point on the floor of a adjacent wheel thus unloading the adjacent wheel, whereby the stability of the bed is maintained, and that the second wheel, supporting against the floor at the gable with the fifth wheel, is constituted by a freely, around a vertical axis swivelling caster wheel.
  • the fifth wheel is operated by help of ' a steering facility at least from a position at the opposite gable of the bed.
  • a steering device which admits caster wheels to be used at the four upright members of the bed on the same time as the bed can be steered during transportation by help of the fifth steering wheel.
  • the fifth steering wheel is possi ⁇ ble to use as well at existing beds, where this is ar ⁇ ranged as an adapter, as at beds where the fifth wheel is integrated in the bed design. DESCRIPTION TO FIGURES The invention is described below as an embodi ⁇ ment according to the figures enclosed.
  • Figure 1 shows a bed schematically in a perspec ⁇ tive view from one side and provided whith a steering device.
  • Figure 2 shows a gable of a bed provided whith a steering device.
  • Figure 3 shows the bed according to figure 2 from one side.
  • FIG 4 shows a part of a fifth wheel partly in a cross section.
  • a bed according to figure 1 includes a mainly rectangular frame 1 , which also can be foldable as shown on figure 1 , provided with four upright members 2 ar ⁇ ranged mainly at each corner of the frame, whereby each upright member is provided with a freely, around a verti- cal axis swivelling caster wheel 3.
  • a fifth wheel to be steered 4 is arranged at one gable of the bed, according to figure 1 , at the gable which constitutes the foot end of the bed and which also is shown on figure 2.
  • the fifth wheel to be steered is arranged closed to one caster wheel 3 of the bed and can be raised or lowered by help of a rai ⁇ sing and lowering device 5, which is operated in a ver ⁇ tical direction by a turning bar 6 provided whith a le-ver 7 arranged at the head end of the bed, whereby the sup- port point of the steering wheel 4 against the floor 8 can be brought into a position below the support point on the floor 8 of the caster wheel 3.
  • the steering wheel 4 is lowered from its raised position according to figure 2 and 3 the adjacent caster wheel 3 is raised the way that the load of the bed is transferred to the stee ⁇ ring wheel 4.
  • Each upright member is provided whith a raising and lowering support 9 of a known kind.
  • the supports 9 must be raised in order to transfer the load from one caster wheel 3 to the steering wheel 4.
  • the steering wheel 4 can be steered by help of a steering facility 10 including a steering bar 11, which is vertically arranged at the head end of the bed, e.g. at the gable of the bed which is opposite to the gable at which the steering wheel is located.
  • the steering bar 11 is provided whith a steering handle 12 at its upper end and is connected at its lower end to a flexible cabel 13, the casing of which is firmly clamped to the frame 1 of the bed, and by help of which pushing and pulling forces can be transferred by an arm 20 from the steering handle 11 to a steering support 14 on the steering wheel 4.
  • the steering wheel 4 according to figure 4 includes a wheel body 15, which is carried on a journal 16 which is turning relative to a housing 17, which is firmly arranged on the bed.
  • the journal 16 can be turned by help of the steering support 14, which is firmly con- nected to the journal 16. Further the journal 16 is axially movable in the housing 17 by help of the raising and falling device 5, which includes an excentrically carried ball bearing 18, which, when turned, pushes the journal 16 causing a lowering of the wheel body 15. When the ball bearing 18 is turned further or together to the initial position the journal is brought back to its re- • tracted position by help of a spring 19, which is shown dotted on figure 4. The lower end of the spring 19 is connected to the housing 17 and its upper end is connec- ted to the journal 16.

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

Steering device for a bed including a mainly rectangular frame (1) provided with four upright members (2) arranged mainly at each corner of the frame (1), whereby each upright member (2) is provided with a wheel (3), whereby a fifth steering wheel (4) is arranged at one gable of the bed closed to one of the other wheels (3) of the bed, that the fifth wheel (4) can be raised and lowered mainly in a vertical direction by help of a raising and lowering device (5). The support point on the floor of the fifth wheel (4) can be brought into a position below the support point on the floor of an adjacent wheel (3) thus unloading the adjacent wheel (3), whereby the stability of the bed is maintained. The second wheel (3), supporting against the floor at the gable with the fifth wheel (4), is constituted by a freely, around a vertical axis swivelling caster wheel.

Description

STEERING DEVICE FOR A BED
TECHNICAL AREA
The present invention concerns a steering device for a bed including a mainly rectangular frame provided whith four upright members arranged mainly at each corner of the frame. Each upright member is provided with a wheel, e.g. a freely, around a vertical axis swivelling caster wheel. ' BACKGROUND TECHNIC
Present hospital beds are provided with caster wheels at one of its two, or at its both gables in order to steer the bed during transportation in hospital corri¬ dors and the similar. It has thereby been proved that this steering can not be done whith any accuracy and that it practically must be two persons to steer the bed around corners, in elevators and the similar. The stee¬ ring thereby demands a pushing of the bed in different directions and on different points on the bed in order to make it moving in a wished direction. If two wheels at the bed gable in the transport direction are made fixed, the steering certainly will be facilitated during trans¬ portation in relative straight corridors and the similar, but will be deteriorated when placing the bed in eleva- tors and treatment rooms.
The american patent publication US 4 300 782 shows a bed whith four wheels, of which three are freely swivelling caster wheels and a fourth is a caster wheel to be steered. However this steering device does not ad- mit a disengagement of the steering wheel in that way that the bed can be handled on four freely swivelling caster wheels. None of the wheels can be raised or lo¬ wered in that way that the bed can be lowered on suppor¬ ting upright members resting upon the floor. DESCRIPTION OF THE INVENTION
The purpose whith the present invention is to eliminate the drawbacks whith the existing bed designs. The purpose has been achieved by the present invention, which concerns a steering device for a bed including a mainly rectangular frame provided whith four upright mem¬ bers arranged mainly at each corner of the frame, whereby each upright member is provided whith a wheel, e.g. a freely, around a vertical axis swivelling caster wheel. The invention is characterised in that a fifth steering wheel is arranged at one gable of the bed closed to one of the other wheels of the bed, that the fifth wheel can be raised and lowered mainly in a vertical direction by help of a raising and lowering device, that the support point on the floor of the fifth wheel can be brought into a position below the support point on the floor of a adjacent wheel thus unloading the adjacent wheel, whereby the stability of the bed is maintained, and that the second wheel, supporting against the floor at the gable with the fifth wheel, is constituted by a freely, around a vertical axis swivelling caster wheel. Preferably the fifth wheel is operated by help of'a steering facility at least from a position at the opposite gable of the bed.
By the invention a steering device has been achieved which admits caster wheels to be used at the four upright members of the bed on the same time as the bed can be steered during transportation by help of the fifth steering wheel. The fifth steering wheel is possi¬ ble to use as well at existing beds, where this is ar¬ ranged as an adapter, as at beds where the fifth wheel is integrated in the bed design. DESCRIPTION TO FIGURES The invention is described below as an embodi¬ ment according to the figures enclosed.
Figure 1 shows a bed schematically in a perspec¬ tive view from one side and provided whith a steering device. Figure 2 shows a gable of a bed provided whith a steering device. Figure 3 shows the bed according to figure 2 from one side.
Figure 4 shows a part of a fifth wheel partly in a cross section. A bed according to figure 1 includes a mainly rectangular frame 1 , which also can be foldable as shown on figure 1 , provided with four upright members 2 ar¬ ranged mainly at each corner of the frame, whereby each upright member is provided with a freely, around a verti- cal axis swivelling caster wheel 3. A fifth wheel to be steered 4 is arranged at one gable of the bed, according to figure 1 , at the gable which constitutes the foot end of the bed and which also is shown on figure 2.
The fifth wheel to be steered, below called the steering wheel, is arranged closed to one caster wheel 3 of the bed and can be raised or lowered by help of a rai¬ sing and lowering device 5, which is operated in a ver¬ tical direction by a turning bar 6 provided whith a le-ver 7 arranged at the head end of the bed, whereby the sup- port point of the steering wheel 4 against the floor 8 can be brought into a position below the support point on the floor 8 of the caster wheel 3. When the steering wheel 4 is lowered from its raised position according to figure 2 and 3 the adjacent caster wheel 3 is raised the way that the load of the bed is transferred to the stee¬ ring wheel 4.
Each upright member is provided whith a raising and lowering support 9 of a known kind. The supports 9 must be raised in order to transfer the load from one caster wheel 3 to the steering wheel 4.
The steering wheel 4 can be steered by help of a steering facility 10 including a steering bar 11, which is vertically arranged at the head end of the bed, e.g. at the gable of the bed which is opposite to the gable at which the steering wheel is located. The steering bar 11 is provided whith a steering handle 12 at its upper end and is connected at its lower end to a flexible cabel 13, the casing of which is firmly clamped to the frame 1 of the bed, and by help of which pushing and pulling forces can be transferred by an arm 20 from the steering handle 11 to a steering support 14 on the steering wheel 4. The steering wheel 4 according to figure 4 includes a wheel body 15, which is carried on a journal 16 which is turning relative to a housing 17, which is firmly arranged on the bed. The journal 16 can be turned by help of the steering support 14, which is firmly con- nected to the journal 16. Further the journal 16 is axially movable in the housing 17 by help of the raising and falling device 5, which includes an excentrically carried ball bearing 18, which, when turned, pushes the journal 16 causing a lowering of the wheel body 15. When the ball bearing 18 is turned further or together to the initial position the journal is brought back to its re- • tracted position by help of a spring 19, which is shown dotted on figure 4. The lower end of the spring 19 is connected to the housing 17 and its upper end is connec- ted to the journal 16.

Claims

PATENT CLAIMS
1. Steering device for a bed including a mainly rectangular frame (1) provided with four upright members (2) arranged mainly at each corner of the frame (1), whereby each upright member (2) is provided whith a wheel (3), c h a r a c t e r i s e d in that a fifth steering wheel (4) is arranged at one gable of the bed closed to one of the other wheels (3) of the bed, that the fifth wheel (4) can.be raised and lowered mainly in a vertical direction by help of a raising and lowering device (5), that the support point on the floor of the fifth wheel (4) can be brought into a position below the support point on the floor of a adjacent wheel (3) thus unloading the adjacent wheel (3), whereby the stability of the bed is maintained, and that the second wheel (3), supporting against the floor at the gable whith the fifth wheel (4), is constituded by a freely, around a vertical axis swi¬ velling caster wheel. »
2. Steering device according to claim 1, c h a r a c t e r i s e d in that the fifth wheel (4) is operated by help of a steering facility (10) at least from a position at the opposite gable of the bed.
PCT/SE1987/000277 1986-06-18 1987-06-11 Steering device for a bed WO1987007830A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8602704-2 1986-06-18
SE8602704A SE453567B (en) 1986-06-18 1986-06-18 CONTROL FOR A SICK BED

Publications (1)

Publication Number Publication Date
WO1987007830A1 true WO1987007830A1 (en) 1987-12-30

Family

ID=20364847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000277 WO1987007830A1 (en) 1986-06-18 1987-06-11 Steering device for a bed

Country Status (3)

Country Link
EP (1) EP0310624A1 (en)
SE (1) SE453567B (en)
WO (1) WO1987007830A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009738A1 (en) * 1992-10-26 1994-05-11 Blanco Gmbh & Co. Kg Patient-transport trolley
GB2285393A (en) * 1993-12-21 1995-07-12 Elaut Nv Device for moving beds
EP1101481A3 (en) * 1993-12-03 2003-07-23 Hill-Rom, Inc. Patient care system
US6752224B2 (en) 2002-02-28 2004-06-22 Stryker Corporation Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system
US6772850B1 (en) 2000-01-21 2004-08-10 Stryker Corporation Power assisted wheeled carriage
US6902019B2 (en) 1999-09-15 2005-06-07 Hill-Rom Services, Inc. Stretcher having a motorized wheel
EP2335999A1 (en) * 2009-12-16 2011-06-22 Inventias Engineering, SL Steering assembly for a human-driven vehicle, and human-driven vehicle
US9707143B2 (en) 2012-08-11 2017-07-18 Hill-Rom Services, Inc. Person support apparatus power drive system
US10004651B2 (en) 2012-09-18 2018-06-26 Stryker Corporation Patient support apparatus
US10568792B2 (en) 2015-10-28 2020-02-25 Stryker Corporation Systems and methods for facilitating movement of a patient transport apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US688950A (en) * 1901-04-04 1901-12-17 Marguerite Holl Tray-holder.
SE309087B (en) * 1967-01-09 1969-03-10 Stille Werner Ab
SE380431B (en) * 1971-11-23 1975-11-10 Asea Ab TRANSPORT MEDIUM, EXV. FOR TRANSPORT OF BEDS IN HOSPITALS
US4300782A (en) * 1979-11-13 1981-11-17 Pioth Michael J Stretcher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US688950A (en) * 1901-04-04 1901-12-17 Marguerite Holl Tray-holder.
SE309087B (en) * 1967-01-09 1969-03-10 Stille Werner Ab
SE380431B (en) * 1971-11-23 1975-11-10 Asea Ab TRANSPORT MEDIUM, EXV. FOR TRANSPORT OF BEDS IN HOSPITALS
US4300782A (en) * 1979-11-13 1981-11-17 Pioth Michael J Stretcher

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009738A1 (en) * 1992-10-26 1994-05-11 Blanco Gmbh & Co. Kg Patient-transport trolley
EP1101481A3 (en) * 1993-12-03 2003-07-23 Hill-Rom, Inc. Patient care system
EP1754427A3 (en) * 1993-12-03 2007-12-19 Hill-Rom Services, Inc Patient care system
EP1754427A2 (en) * 1993-12-03 2007-02-21 Hill-Rom, Inc. Patient care system
GB2285393A (en) * 1993-12-21 1995-07-12 Elaut Nv Device for moving beds
US5580207A (en) * 1993-12-21 1996-12-03 Elaut, Naamloze Vennootschap Device for moving beds
GB2285393B (en) * 1993-12-21 1997-12-03 Elaut Nv Device for moving a bed
US6902019B2 (en) 1999-09-15 2005-06-07 Hill-Rom Services, Inc. Stretcher having a motorized wheel
US7007765B2 (en) 2000-01-21 2006-03-07 Stryker Corporation Method for driving a wheeled carriage
US6772850B1 (en) 2000-01-21 2004-08-10 Stryker Corporation Power assisted wheeled carriage
US6752224B2 (en) 2002-02-28 2004-06-22 Stryker Corporation Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system
EP2335999A1 (en) * 2009-12-16 2011-06-22 Inventias Engineering, SL Steering assembly for a human-driven vehicle, and human-driven vehicle
WO2011073776A3 (en) * 2009-12-16 2011-08-11 Inventias Engineering, Sl Steering assembly for a human-driven vehicle, and human-driven vehicle
US8944441B2 (en) 2009-12-16 2015-02-03 Inventias Engineering, S.L. Steering assembly for a human-driven vehicle, and human-driven vehicle
US9707143B2 (en) 2012-08-11 2017-07-18 Hill-Rom Services, Inc. Person support apparatus power drive system
US10588803B2 (en) 2012-08-11 2020-03-17 Hill-Rom Services, Inc. Person support apparatus power drive system
US10004651B2 (en) 2012-09-18 2018-06-26 Stryker Corporation Patient support apparatus
US10568792B2 (en) 2015-10-28 2020-02-25 Stryker Corporation Systems and methods for facilitating movement of a patient transport apparatus
US10905612B2 (en) 2015-10-28 2021-02-02 Stryker Corporation Systems and methods for facilitating movement of a patient transport apparatus

Also Published As

Publication number Publication date
SE8602704D0 (en) 1986-06-18
EP0310624A1 (en) 1989-04-12
SE8602704L (en) 1987-12-19
SE453567B (en) 1988-02-15

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