EP3777807B1 - Fauteuil roulant multifonctionnel - Google Patents

Fauteuil roulant multifonctionnel Download PDF

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Publication number
EP3777807B1
EP3777807B1 EP18914174.0A EP18914174A EP3777807B1 EP 3777807 B1 EP3777807 B1 EP 3777807B1 EP 18914174 A EP18914174 A EP 18914174A EP 3777807 B1 EP3777807 B1 EP 3777807B1
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EP
European Patent Office
Prior art keywords
bar
base
support bar
seat plate
connecting plate
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.)
Active
Application number
EP18914174.0A
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German (de)
English (en)
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EP3777807C0 (fr
EP3777807A1 (fr
EP3777807A4 (fr
Inventor
Guomin Tao
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.)
Tao Guomin
ZHANG, WENHAO
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Individual
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Publication of EP3777807A4 publication Critical patent/EP3777807A4/fr
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Publication of EP3777807C0 publication Critical patent/EP3777807C0/fr
Publication of EP3777807B1 publication Critical patent/EP3777807B1/fr
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    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/006—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs convertible to stretchers or beds
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0833—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/085—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0866—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable folding down backrest, e.g. where the backrest folds down onto the seat support
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0875—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable dismountable, e.g. where the wheelchair can be disassembled for transportation or storage
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1002—Parts, details or accessories with toilet facilities
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1059—Arrangements for adjusting the seat adjusting the height of the seat
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1064—Arrangements for adjusting the seat adjusting the depth of the seat
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1094—Tables, working plates or trays
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/121—Rests specially adapted therefor, e.g. for the head or the feet for head or neck
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/125—Rests specially adapted therefor, e.g. for the head or the feet for arms
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/127—Rests specially adapted therefor, e.g. for the head or the feet for lower 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
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A61G2200/32—Specific positions of the patient lying
    • 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
    • A61G2200/00—Information related to the kind of patient or his position
    • A61G2200/30—Specific positions of the patient
    • A61G2200/34—Specific positions of the patient sitting
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort

Definitions

  • This application relates to medical care equipment, and in particular, to a multifunctional wheelchair used by a patient who is bedridden for a long time or who cannot move independently.
  • a wheelchair designed for a person who is bedridden for a long time or have difficulty in moving has a single function, which can only meet some use requirements such as moving by using the wheelchair for a user.
  • the structure is fixed and unchangeable, the user often needs many persons to carry and hold at the same time, which causes pressure on family members and nursing workers of a patient, wastes time and effort, and makes the user feel uncomfortable.
  • a plurality of family members or nursing workers take care of the patient at the same time, causing great economic pressure to the family.
  • British patent application GB 2048791 A discloses a wheelchair including a frame with four wheels and a seat mounted on the frame for forward and rearward adjustment in a horizontal plane by means of slides.
  • the seat is mounted on a pivotal parallelogram linkage.
  • the seat includes a tilt able backrest portion and raisable arms.
  • Auxiliary drive wheels are driven by an electric motor.
  • Chinese patent CN 105147176 A discloses a seat-type close stool frame.
  • the seat-type close stool frame includes a fixed seat, a sitting plate, a support rod assembly and a driving device.
  • a close stool hole is formed in the center of the sitting plate, the two ends of the support rod assembly are connected to the fixed seat and the sitting plate through hinges, the support rod assembly includes a front support rod assembly body and a rear support rod assembly body, the driving device is used for driving the support rod assembly to rotate and/or used for driving the sitting plate to be lifted up and dropped down, the driving device is in drive connection with any one of the front support rod assembly body and the rear support rod assembly body or is connected to the portion between the fixed seat and any one of the sitting plate, the front support rod assembly body and the rear support rod assembly body. Therefore, a multifunctional wheelchair with comprehensive functions, a flexible structure, and a reduced number of auxiliary staffs is urgently needed.
  • This application is intended to overcome the defects of the prior art and provide a multifunctional wheelchair.
  • a multifunctional wheelchair including a base with wheels, and further including an adjustable lifting device connected above the base, the adjustable lifting device including a seat plate, a backrest hinged to a rear end of the seat plate, a lower connecting plate connected to the base, and a support structure hinged between the seat plate and the lower connecting plate, the support structure including a front support bar assembly and a rear support bar assembly; and the adjustable lifting device further including a driving mechanism for driving the rotation of the support structure and/or for driving the lifting of the seat plate, the driving mechanism generating a rotary motion or a linear motion, so that a parallelogram mechanism formed by the seat plate, the front support bar assembly, the lower connecting plate, and the rear support bar assembly is in an unfolded state or a stored state.
  • the adjustable lifting device further includes: a front baffle hinged to a front end of the seat plate; a front armrest hinged to a middle portion of the front end of the seat plate; and a neck pillow disposed at an outer end of the backrest; and the front support bar assembly includes a left front support bar and a right front support bar, and the rear support bar assembly includes a left rear support bar and a right rear support bar.
  • An upper support plate of the base is provided with a sliding groove, and a pulley slidably matched with the sliding groove is disposed below the lower connecting plate, to form a slidable and detachable connection between the adjustable lifting device and the base;
  • the lower connecting plate is the upper support plate of the base, to form an integrated structure;
  • the lower connecting plate is fixedly connected to the upper support plate provided on the base.
  • the slidable and detachable connection adopts a sliding groove locking structure, specifically including a pair of blocks, two sliding grooves, two shock absorbers, and two locking blocks that are respectively disposed at the front and back of the base, the two locking blocks extending downward through an upper panel of the base and being connected above an unlocking rack, the unlocking rack being slidably connected below the upper panel of the base through a guide bar, a self-locking spring that abuts below the unlocking rack being sleeved on the guide bar, and the blocks abutting against a fixed protrusion on a lower surface of the lower connecting plate of the adjustable lifting device.
  • a center of the seat plate is provided with a defecation through hole; a sliding groove or a bracket is provided below the seat plate, and the sliding groove or bracket is located below the defecation through holefor sliding connection or support of an excrement container.
  • the driving mechanism is an electric motor with a speed reduction mechanism, the speed reduction mechanism being provided with an output shaft and being connected to a rotating shaft of either the front support bar assembly or the rear support bar assembly through transmission;
  • An infusion stand is hinged to a left side and/or right side of the base, the infusion stand being a bar-shaped structure with axial length adjustment.
  • a stay bar bracket is connected to the base, the stay bar bracket being a door-shaped frame structure and including a left side bar and a right side bar connected to a left rear side and a right rear side of the base and a transverse push bar connected to rear ends of the left side bar and the right side bar, when the backrest and the seat plate are in a 180-degree unfolded state, the transverse push bar being snapped into a transverse slot disposed on a back surface of the backrest.
  • Right-angle armrests are hinged to two sides of the base, the right-angle armrests being in a stored state when rotated forward by 90 degrees.
  • Top portions of the adjustable armrests are both provided with sockets for externally connecting a tray table.
  • a front end of the base is provided with a footrest.
  • the multifunctional wheelchair of this application has the following significant advantages compared with a traditional wheelchair.
  • the base is matched with the adjustable lifting device in this application, a height and an angle of the wheelchair body both can be adjusted, which has wider applicability.
  • the wheelchair is suitable for beds of various heights and meets various usage requirements of lying, sitting, moving, folding and so on.
  • the slidable and detachable structure facilitates separate use of the wheelchair body and the base, which has a lighter weight and can reduce physical strength of the nursing worker and the family member of the patient.
  • a plurality of wheelchair bodies may share a base to reduce expenses.
  • the adjustable lifting device further includes a seat plate with a defecation through hole in the center, a front baffle for supporting the calf part, a front armrest for the user to lean on, and a neck pillow for supporting a head, which has higher security while increasing comfort. Since a variety of power-driven mechanisms can be used, a manufacturer may make flexible choices depending on different costs and production priorities.
  • the base is additionally provided with a stay bar bracket for pushing the wheelchair, an armrest for supporting an elbow of a user, an external tray table for placing items, and a footrest for supporting the feet, which has comprehensive functions and is solid and durable.
  • a multifunctional wheelchair including a base 1 with wheels 17, and further including an adjustable lifting device 2 connected above the base 1.
  • the adjustable lifting device 2 includes a seat plate 3, a backrest 4 hinged to a rear end of the seat plate 3, a lower connecting plate 5 connected to the base 1, and a support structure 6 hinged between the seat plate 3 and the lower connecting plate 5.
  • the support structure 6 includes a front support bar assembly 61 and a rear support bar assembly 62.
  • the front support bar assembly 61 includes a left front support bar and a right front support bar
  • the rear support bar assembly 62 includes a left rear support bar and a right rear support bar.
  • the adjustable lifting device 2 further includes a driving mechanism for driving the rotation of the support structure 6 and/or for driving the lifting of the seat plate 3, the driving mechanism generating a rotary motion or a linear motion, so that a parallelogram mechanism formed by the seat plate 3, the front support bar assembly 61, the lower connecting plate 5, and the rear support bar assembly 62 is in an unfolded state or a stored state.
  • the multifunctional wheelchair of this application When in the unfolded state, the multifunctional wheelchair of this application is in a working state, and can assist a nursing worker or a family member caring for a patient to perform daily cleaning activities for a user.
  • the multifunctional wheelchair of this application When in the stored state, the multifunctional wheelchair of this application is folded and stored, with the smallest volume, and can be easily folded in any corner, thereby reducing the space occupation.
  • two sets of front and rear wheels 17 are symmetrically installed under the base 1.
  • the wheels 17 and the base 1 are detachably connected through threads, and a connection height can be adjusted as needed by artificially increasing or decreasing the degree of thread engagement. Due to the different bed heights applicable to this application, when the height of the adjustable lifting device 2 cannot meet the usage requirements, the wheels 17 on the base 1 are used to assist in adjusting the overall height of the multifunctional wheelchair.
  • the height adjustment range is suitable for most of the beds for use on the market and can be widely applicable.
  • a front lower support shaft 57, a front upper support shaft 59, a rear lower support shaft 63, and a rear upper support shaft 64 constitute four hinge positions of the support structure 6.
  • a first electric push bar 111 is an electric telescopic bar. A fixed end of the first electric push bar 111 is hinged to a fixed bracket (located on the lower connecting plate 5 and as a part of the lower connecting plate 5) of the adjustable lifting device 2, and a movable end thereof is sleeved on an outer ring of a push shaft 58 through a connector 56. Two ends of the push shaft 58 are each provided with a roller 52.
  • the roller 52 rolls in a roller groove 55 disposed on the left front support bar and the right front support bar.
  • the fixed bracket of the adjustable lifting device 2 is further provided with a transition support rotating shaft 54. Two ends of the transition support rotating shaft 54 are hinged to the fixed bracket. Transition support arms 53 perpendicular to an axis of the transition support rotating shaft are disposed near the two ends of the transition support rotating shaft 54.
  • the top of the transition support arm 53 is provided with an upper rolling shaft 51 with a smaller diameter.
  • Two ends of the push shaft 58 are pivotally connected to a middle section of the transition support arm 53, respectively.
  • an outer surface of the roller 52 is in contact with the roller groove 55.
  • the roller 52 When the movable end of the first electric push bar 111 stretches out, the roller 52 is driven to roll in the roller groove 55, and a parallelogram formed by the seat plate 3, the front support bar assembly 61, the lower connecting plate 5, and the rear support bar assembly 62 is propped up.
  • the adjustable lifting device 2 ascends to a predetermined height (close to the maximum open state)
  • the roller 52 is separated from the roller groove 55 without producing a support force.
  • the upper rolling shaft 51 at the top of the transition support arm 53 is contact with two side edges of the roller groove 55 to produce the supporting force. In this case, an arm of force becomes larger, and a reaction force applied to the first electric push bar 111 becomes smaller, so that the adjustable lifting device 2 can be more stable in an open state.
  • the advantage of such a supporting structure is that the initial force can be increased during the ascent of the adjustable lifting device 2 and the stroke of the electric push bar can be shortened.
  • the electric push bar is forced gently in the maximum state, ensuring the structural stability of each component, thereby increasing service life.
  • the upper roller 51 preferably adopts a stepped structure, that is, diameters at two ends are less than that of the middle part.
  • the upper support plate of the base 1 of the multifunctional wheelchair of this application is provided with a sliding groove 13, and a pulley slidably matched with the sliding groove 13 is provided below the lower connecting plate 5, to form a slidable and detachable connection between the adjustable lifting device 2 and the base 1.
  • the adjustable lifting device 2 and the base 1 adopt a sliding groove locking structure for detachable connection.
  • An upper surface of the base 1 is provided with: four blocks 12 (one pair each at the front and back), two sliding grooves 13, two shock absorbers 14, and two locking blocks 15.
  • the two locking blocks 15 extends downward through an upper panel (that is, the upper surface) of the base 1 and is connected above an unlocking rack 19.
  • the unlocking rack 19 is slidably connected below the upper panel of the base 1 through a guide bar.
  • a self-locking spring 18 that abuts below the unlocking rack 19 is sleeved on the guide bar.
  • the shock absorber 14 is internally provided with a spring for cushioning and shock absorption, so as to reduce the secondary damage to the user caused by inertia in the assembly process.
  • the block 12 is used to abut against a fixed protrusion (not shown in the figure, there are two sets, two near the front end, and two near the rear end, corresponding to the number of blocks 12) on a lower surface of the lower connecting plate 5 of the adjustable lifting device 2, which is used for limiting after assembly.
  • the lower connecting plate 5 of the adjustable lifting device 2 is slid in along the sliding groove 13 from the rear end of the base 1 toward a horizontal direction of the front end under the restriction of the two sliding grooves 13.
  • the locking block 15 When the fixed protrusion on the lower surface of the lower connecting plate 5 acts on a guiding inclined surface of the locking block 15, the locking block 15 is pressed down, and after the fixed protrusion near the rear end crosses the uppermost end of the locking block 15, the locking block 15 automatically pops up through the spring force produced on the unlocking rack 19 by the self-locking spring 18, and the fixed protrusion near the rear end is placed between the rear block 12 and the locking block 15 to form an assembled state. Due to the use of the sliding groove 13 and the shock absorber 14, the labor-saving and safety in the assembly process are ensured, and due to the use of the block 12 and the locking block 15, solid and reliable assembly is ensured.
  • the user steps down with feet (or presses down with other working tools) on the crossbar part of the unlocking rack 19 to apply downward pressure on the unlocking rack 19, thereby alleviating the spring force of the self-locking spring 18 and driving the locking block 15 to be pressed down until the upper surface is flush with the upper surface of the lower connecting plate 5.
  • the elastic force of the shock absorber 14 faces the opposite direction of the assembly, so that the adjustable lifting device 2 is unlocked (that is, in an unassembled combined state) from the base 1, and then the adjustable lifting device 2 is dragged by external force to complete the disassembly.
  • This pedal unlocking structure can reduce the work intensity of the disassembling personnel, and is convenient and reliable.
  • the structure of the block 12 in this embodiment is an inverted L shape to form a limiting cavity for accommodating the fixed protrusion. In the assembled state, the adjustable lifting device 2 can be prevented from being separated from the base 1 upward.
  • the lower connecting plate 5 is the upper supporting plate of the base 1, and the multifunctional wheelchair forms an integrated structure.
  • the lower connecting plate 5 is fixedly connected, in a manner such as connected through threads, welding, and the like, to the upper supporting plate provided on the base 1.
  • the purpose is also to obtain a multifunctional wheelchair with an integrated structure to ensure the reliability and durability of the wheelchair.
  • the adjustable lifting device 2 further includes:
  • a fixed end of a second electric push bar 112 is fixedly connected to a bracket on the lower surface of the base 1, a movable end thereof is hinged to a lower armrest connecting bar 117, the lower armrest connecting bar 117 is fixedly connected to an armrest bar 16 through the armrest side connecting plate 115 that is fixedly connected, and the armrest side connecting plate 115 is perpendicular to the armrest bar 16.
  • the armrest bar 16 is in a stored state when being in a horizontal state, and the movable end of the second electric push bar 112 is in an extended state. In the working state, the movable end of the second electric push bar 112 is stored, thereby driving the lower armrest connecting bar 117 to rotate. While the lower armrest connecting bar 117 rotates, the armrest bar 16 is driven to rotate upward through the armrest side connecting plate 115 that is fixedly connected.
  • the armrest bar 16 is propped up for the user to support the elbow.
  • FIG. 9 A further technical solution is shown in FIG. 9 .
  • a footrest connecting bar 116 is sleeved in a middle portion of the lower armrest connecting bar 117, one end of the footrest connecting bar 116 is hinged to the lower armrest connecting bar 117, and the other end thereof is hinged to a middle portion below a front footrest 21.
  • the movable end of the second electric push bar 112 is stored, thereby driving the lower armrest connecting bar 117 to rotate.
  • the footrest connecting bar 116 is driven to rotate by the armrest lower connecting bar 117 while rotating, so that the connected front footrest 21 is rotated toward the front from the rear, which allows the user to relax legs when sitting.
  • FIG. 8 A further technical solution is shown in FIG. 8 .
  • a fixed end of a third electric push bar 113 is fixedly connected to the fixed bracket of the base 1, and a movable end thereof is hinged to a lower end of a stay bar 114.
  • the stay bar 114 is vertically and fixedly connected to a left side bar 71 and a right side bar.
  • the third electric push bar 113 rotates, and then drives the stay bar 114, the left side bar 71, and the right side bar to rotate upward.
  • a transverse push bar 72 is in contact with the lower surface of the backrest 4, the driving mechanism stops driving and reaches a stable state to provide the backrest 4 with enough supporting force, thereby ensuring the back of the user to be stably supported.
  • All of the electric push bars in the above embodiments can be replaced by other linear power mechanisms, for example, a ball screw mechanism or a screw mechanism with a motor, and a cylinder or oil cylinder connected to a pressure source.
  • the center of the seat plate 3 is provided with a defecation through hole 31 for daily excretion by the user in a wheelchair.
  • a sliding groove or a bracket is provided below the seat plate 3. The sliding groove or the bracket is located below the defecation through hole 31 for sliding connection or support of the excrement container.
  • the excrement container may be a bedpan, a disposable excretion bag, or the like according to specific requirements.
  • the driving mechanism of the multifunctional wheelchair of this application is an electric motor with a speed reduction mechanism.
  • the speed reduction mechanism is provided with an output shaft and is connected to a rotating shaft of either the front support bar assembly 61 or the rear support bar assembly 62 through transmission.
  • the driving mechanism is a manual forcing bar generating rotational power
  • an outer end of the rotating shaft of either the front support bar assembly 61 or the rear support bar assembly 62 is provided with a torque connecting portion.
  • the manual forcing bar is connected to the torque connecting portion through transmission.
  • the driving mechanism is a linear power mechanism disposed between the lower connecting plate 5 and any of the seat plate 3, the front support bar assembly 61, and the rear support bar assembly 62.
  • the linear power mechanism is an electric push bar, an air cylinder, an oil cylinder, or a ball screw transmission mechanism.
  • the driving mechanism is an air bag disposed between the lower connecting plate 5 and the seat plate 3, and an air pump connected to an air channel of the air bag.
  • the driving mechanism is a magnetic mechanism disposed between the low connecting plate 5 and the seat plate 3.
  • the magnetic mechanism includes a lower coil fixed onto the lower connecting plate 5, an upper coil fixed below the seat plate 3, and a driving circuit electrically connected to the upper coil and the lower coil.
  • the upper coil and the lower coil produce a magnetic field of a same level, thereby generating a repulsive force for the seat plate 3 to rise upward.
  • an infusion stand 11 is hinged to the left and/or right side of the base 1.
  • the infusion stand 11 is a bar-shaped structure with axial length adjustment.
  • the infusion stand 11 is stretched from the stored state to a required height and used to hang an infusion bottle/bag.
  • a stay bar bracket 7 is connected to the base 1.
  • the stay bar bracket 7 is a door-shaped frame structure and includes a left side bar 71 and a right side bar connected to a left rear side and a right rear side of the base 1 and a transverse push bar 72 connected to rear ends of the left side bar 71 and the right side bar.
  • the stay bar bracket 7 is used for a nursing worker or the patient's family member to push the wheelchair to move from the rear of the wheelchair.
  • the transverse push bar 72 is snapped into a transverse slot provided on the back surface of the backrest 4, and a part of the backrest 4 is provided with an upward support force to ensure the safety of the patient in a lie-down state such as washing hair and bathing for use.
  • right-angle armrests 8 are hinged to two sides of the base 1, the right-angle armrests 8 being in a stored state when rotated forward by 90 degrees.
  • the right-angle armrest 8 is in use when being in an upright state and used for the user to lean on.
  • the top of the right-angle armrest 8 is provided with a socket for an external tray table 9. When the user needs to eat, read, bathe, and do other things on the multifunctional wheelchair, the external tray table 9 is used to place necessary items and utensils.
  • the front end of the base 1 is provided with a footrest 10 for supporting the feet, which is more convenient for a person with difficulty in excreting such as the elderly or bedridden people to use, and can relieve the pressure of defecation.
  • the labor-saving short-stroke connecting bar structure includes an upper connecting plate (which is seat plate in the embodiments of FIG. 1 to FIG. 9 ), a lower connecting plate, and a support structure hinged between the upper connecting plate and the lower connecting plate.
  • the support structure includes a front support bat assembly and a rear support bar assembly, and further includes a driving mechanism for driving the support structure to rotate.
  • the driving mechanism produces a linear motion, so that a parallelogram mechanism formed by the upper connecting plate, the front support bar assembly, the lower connecting plate, and the rear support bar assembly is in an unfolded state or a stored state.
  • the front support bar assembly includes a left front support bar and a right front support bar
  • the rear support bar assembly includes a left rear support bar and a right rear support bar.
  • the driving mechanism is an electric telescopic bar.
  • a fixed end of the electric telescopic bar is hinged to the lower connecting plate
  • a movable end of the electric telescopic bar is sleeved on an outer ring of a push shaft through a connector.
  • Two ends of the push shaft are each provided with a roller, and the roller rolls in a roller groove disposed on the left front support bar and the right front support bar.
  • the lower connecting plate is also provided with a transition support rotating shaft. Two ends of the transition support rotating shaft are hinged to the lower connecting plate.
  • Transition support arms perpendicular to an axis of the transition support rotating shaft are disposed near the two ends of the transition support rotating shaft.
  • the top of the transition support arm is provided with an upper rolling shaft, and two ends of the push shaft are pivotally connected to a middle section of the transition support arm, respectively.
  • an outer surface of the roller is in contact with the roller groove.
  • the roller is driven to roll in the roller groove, and a parallelogram formed by the upper connecting plate, the front support bar assembly, the lower connecting plate, and the rear support bar assembly is propped up.
  • the adjustable lifting device ascends to a predetermined height (close to the maximum open state)
  • the roller is separated from the roller groove without producing a support force.
  • the upper rolling shaft at the top of the transition support arm is contact with two side edges of the roller groove to produce the supporting force.
  • an arm of force becomes larger, and a reaction force applied to the first electric push bar becomes smaller, so that the adjustable lifting device can be more stable in an open state.
  • the advantage of such a supporting structure is that the initial force can be increased during the ascent of the adjustable lifting device and the stroke of the electric push bar can be shortened.
  • the electric push bar is forced gently in the maximum state, ensuring the structural stability of each component, thereby increasing service life.
  • the upper roller preferably adopts a stepped structure, that is, diameters at two ends are less than that of the middle part.
  • the labor-saving short-stroke connecting bar structure of this application may be used in a multifunctional wheelchair, which is specifically shown in the embodiments of FIG. 1 to FIG. 9 , and may also be used in structures of various chairs such as student seats, car seats, and the like.
  • the seat includes a base, armrest bars hinged to two sides of the base, and a footrest hinged to a front end of the base, and further includes a linear driving mechanism disposed between the base and the armrest bar.
  • a fixed end of the linear driving mechanism is fixedly connected to a bracket of the base, a movable end thereof is hinged to a lower armrest connecting bar, and the lower armrest connecting bar is fixedly connected to the armrest bar through an armrest side connecting plate that is fixedly connected.
  • the armrest bar is in a stored state when being in a horizontal state, and the movable end of the linear driving mechanism is in an extended state.
  • the movable end of the linear driving mechanism is stored, thereby driving the lower armrest connecting bar to rotate. While the lower armrest connecting bar rotates, the armrest bar is driven to rotate upward through the armrest side connecting plate that is fixedly connected. The armrest bar is propped up for the user to support the elbow.
  • a footrest connecting bar is sleeved in a middle portion of the lower armrest connecting bar, one end of the footrest connecting bar is hinged to the lower armrest connecting bar, and the other end thereof is hinged to a middle portion below a front footrest.
  • the movable end of the linear driving mechanism is stored, thereby driving the lower armrest connecting bar to rotate.
  • the footrest connecting bar is driven to rotate by the armrest lower connecting bar while rotating, so that the connected front footrest is rotated toward the front from the rear, which allows the user to relax legs when sitting.
  • the linkage connecting bar structure for a seat of this application may be used in a multifunctional wheelchair, which is specifically shown in the embodiments of FIG. 1 to FIG. 9 , and may also be used in structures of various chairs such as folding seats, car seats, and the like.
  • the base is matched with the adjustable lifting device, a height and an angle of the wheelchair body both can be adjusted, which has wider applicability.
  • the wheelchair is suitable for beds of various heights and meets various usage requirements of lying, sitting, moving, folding and so on.
  • the slidable and detachable structure facilitates separate use of the wheelchair body and the base, which has a lighter weight and can reduce physical strength of the nursing worker and the family member of the patient.
  • a plurality of wheelchair bodies may share a base to reduce expenses.
  • the adjustable lifting device further includes a seat plate with a defecation through hole in the center, a front baffle for supporting the calf part, a front armrest for the user to lean on, and a neck pillow for supporting a head, which has higher security while increasing comfort. Since a variety of power-driven mechanisms can be used, a manufacturer may make flexible choices depending on different costs and production priorities.
  • the base is additionally provided with a stay bar bracket for pushing the wheelchair, an armrest for supporting an elbow of a user, an external tray table for placing items, and a footrest for supporting the feet, which has comprehensive functions and is solid and durable.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Invalid Beds And Related Equipment (AREA)

Claims (9)

  1. Fauteuil roulant multifonctionnel, comprenant une base (1) avec des roues (17) et un dispositif de levage réglable (2) connecté au-dessus de la base (1), dans lequel le dispositif de levage réglable (2) comprend une plaque de siège (3), un dossier (4) articulé sur une extrémité arrière de la plaque de siège (3), une plaque de liaison inférieure (5) reliée à la base (1), et une structure de support (6) articulée entre la plaque de siège (3) et la plaque de liaison inférieure (5), la structure de support (6) comprend un ensemble barre de support avant (61) et un ensemble barre de support arrière (62) ; et le dispositif de levage réglable (2) comprend en outre un mécanisme d'entraînement pour entraîner la rotation de la structure de support (6) et/ou pour entraîner le levage de la plaque de siège (3), le mécanisme d'entraînement générant un mouvement rotatif ou un mouvement linéaire, de telle sorte qu'un mécanisme de parallélogramme formé par la plaque de siège (3), l'ensemble barre de support avant (61), la plaque de liaison inférieure (5) et l'ensemble barre de support arrière (62) est dans un état déplié ou un état stocké ;
    caractérisé en ce que le dispositif de levage réglable (2) comprend en outre :
    un déflecteur avant (21) articulé sur une extrémité avant de la plaque de siège (3) ;
    un accoudoir avant (22) articulé sur une partie médiane de l'extrémité avant de la plaque de siège (3) ; et
    un oreiller cervical (23) disposéà une extrémité extérieure du dossier (4) ; et
    l'ensemble barre de support avant (61) comprend une barre de support avant gauche et une barre de support avant droite, et l'ensemble barre de support arrière (62) comprend une barre de support arrière gauche et une barre de support arrière droite.
  2. Fauteuil roulant multifonctionnel selon la revendication 1, dans lequel une plaque de support supérieure de la base (1) est pourvue d'une rainure coulissante (13), et une poulie adaptée de manière coulissante à la rainure coulissante (13) est disposée sous la plaque de liaison inférieure (5), pour former une connexion coulissante et détachable entre le dispositif de levage réglable (2) et la base (1) ;
    alternativement, la plaque de liaison inférieure (5) est la plaque de support supérieure de la base (1), pour former une structure intégrée ;
    alternativement, la plaque de liaison inférieure (5) est reliée de manière fixe à la plaque de support supérieure prévue sur la base (1).
  3. Fauteuil roulant multifonctionnel selon la revendication 1, dans lequel un centre de la plaque de siège (3) est pourvu d'un trou traversant de défécation (31) ; et
    une rainure coulissante ou un support est disposé au-dessous de la plaque de siège (3), et la rainure coulissant ou le support est situé dessous le trou traversant de défécation (31) pour une connexion coulissante ou un support d'un conteneur à excréments.
  4. Fauteuil roulant multifonctionnel selon l'une quelconque des revendications 1 à 3, dans lequel
    le mécanisme d'entraînement est un moteur électrique avec un mécanisme de réduction de vitesse, le mécanisme de réduction de vitesse étant pourvu d'un arbre de sortie et étant reliéà un arbre rotatif soit de l'ensemble barre de support avant (61), soit de l'ensemble barre de support arrière (62) par l'intermédiaire transmission;
    alternativement,
    le mécanisme d'entraînement est une barre de forçage manuel générant une puissance de rotation, et une extrémité extérieure de l'arbre rotatif de l'ensemble barre de support avant (61) ou de l'ensemble barre de support arrière (62) est dotée d'une partie de connexion de couple, la barre de forçage manuel étant reliée à la partie de connexion de couple par l'intermédiaire d'une transmission ;
    alternativement,
    le mécanisme d'entraînement est un mécanisme de puissance linéaire disposé entre la plaque de liaison inférieure (5) et l'un quelconque parmi la plaque de siège (3), l'ensemble barre de support avant (61) et l'ensemble barre de support arrière (62), le mécanisme de puissance linéaire étant une barre de poussée électrique, un cylindre pneumatique, un cylindre à huile ou un mécanisme de transmission à vis à billes ;
    alternativement,
    le mécanisme d'entraînement est un airbag disposé entre la plaque de liaison inférieure (5) et la plaque de siège (3), et une pompe à air reliée à un canal d'air de l'airbag ;
    alternativement,
    le mécanisme d'entraînement est un mécanisme magnétique disposé entre la plaque de liaison inférieure (5) et la plaque de siège (3), le mécanisme magnétique comprenant une bobine inférieure fixée sur la plaque de liaison inférieure (5), une bobine supérieure fixée en dessous de la plaque de siège (3), et un circuit d'entraînement connectéélectriquement à la bobine supérieure et à la bobine inférieure, la bobine supérieure et la bobine inférieure générant un champ magnétique d'un même niveau, générant ainsi une force répulsive permettant à la plaque de siège (3) de s'élever vers le haut.
  5. Fauteuil roulant multifonctionnel selon l'une quelconque des revendications 1 à 3, dans lequel un support de perfusion (11) est articulé sur un côté gauche et/ou droit de la base (1), le support de perfusion (11) étant une structure en forme de barre avec réglage de longueur axiale.
  6. Fauteuil roulant multifonctionnel selon l'une quelconque des revendications 1 à 3, dans lequel un support de barre de maintien (7) est reliéà la base (1), le support de barre de maintien (7) étant une structure de cadre en forme de porte et comprenant une barre latérale gauche (71) et une barre latérale droite reliées à un côté arrière gauche et à un côté arrière droit de la base (1) et une barre de poussée transversale (72) reliée aux extrémités arrière de la barre latérale gauche (71) et de la barre latérale droite, lorsque le dossier (4) et la plaque de siège (3) sont dans un état dépliéà 180 degrés, la barre de poussée transversale (72) étant encliquetée dans une fente transversale disposée sur une surface arrière du dossier (4).
  7. Fauteuil roulant multifonctionnel selon l'une quelconque des revendications 1 à 3, dans lequel les accoudoirs à angle droit (8) sont articulés sur deux côtés de la base (1), les accoudoirs à angle droit (8) étant dans un état rangé lorsqu'ils sont tournés vers l'avant de 90 degrés.
  8. Fauteuil roulant multifonctionnel selon la revendication 7, dans lequel les parties supérieures des accoudoirs à angle droit (8) sont toutes deux dotées de prises pour connecter extérieurement une table à plateau (9).
  9. Fauteuil roulant multifonctionnel selon la revendication 1, dans lequel une extrémité avant de la base (1) est dotée d'un repose-pieds (10).
EP18914174.0A 2018-04-13 2018-05-02 Fauteuil roulant multifonctionnel Active EP3777807B1 (fr)

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CN201810331080.7A CN108498245B (zh) 2018-04-13 2018-04-13 一种多功能轮椅
PCT/CN2018/085247 WO2019196146A1 (fr) 2018-04-13 2018-05-02 Fauteuil roulant multifonctionnel

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EP3777807A1 EP3777807A1 (fr) 2021-02-17
EP3777807A4 EP3777807A4 (fr) 2022-03-23
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JP (1) JP7386467B2 (fr)
KR (1) KR102490831B1 (fr)
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CN108498245A (zh) 2018-09-07
EP3777807C0 (fr) 2024-04-03
JP2021520284A (ja) 2021-08-19
RU2767548C1 (ru) 2022-03-17
KR20200138824A (ko) 2020-12-10
JP7386467B2 (ja) 2023-11-27
WO2019196146A1 (fr) 2019-10-17
AU2018418625B2 (en) 2021-09-30
SG11202010074YA (en) 2020-11-27
CN108498245B (zh) 2024-03-15
AU2018418625A1 (en) 2020-12-03
KR102490831B1 (ko) 2023-01-20
EP3777807A1 (fr) 2021-02-17
EP3777807A4 (fr) 2022-03-23

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