Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B5/00—Accessories or details specially adapted for hand carts
  • B62B5/0026—Propulsion aids
  • B62B5/0033—Electric motors
  • B62B5/0036—Arrangements of motors
  • B62B5/005—Detachably mounted motor units
• • 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
• • 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
  • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
  • A61G5/047—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven by a modular detachable drive system
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B5/00—Accessories or details specially adapted for hand carts
  • B62B5/0026—Propulsion aids
  • B62B5/0033—Electric motors
  • B62B5/0036—Arrangements of motors
  • B62B5/0043—One motor drives one wheel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B5/00—Accessories or details specially adapted for hand carts
  • B62B5/0026—Propulsion aids
  • B62B5/0079—Towing by connecting to another vehicle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B5/00—Accessories or details specially adapted for hand carts
  • B62B5/08—Children's seats ; Seats or supports for other persons
  • B62B5/085—Resting seats
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B5/00—Accessories or details specially adapted for hand carts
  • B62B5/08—Children's seats ; Seats or supports for other persons
  • B62B5/087—Platforms to stand upon
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B2202/00—Indexing codes relating to type or characteristics of transported articles
  • B62B2202/90—Vehicles

Definitions

• the invention relates to the field of transporting rolling objects, in particular rolling beds, for example hospital beds.
• the wheel gripping mechanism is complex and bulky: the lateral dimension (direction parallel to the axis of the motorized wheels) is large (greater than the width of the wheels of the bed) and may exceed the lateral dimensions of the bed, which can be inconvenient when moving the bed, especially in a small space such as a hallway or a hospital elevator.
• Patent application WO 2013/156030 describes a third system for propelling a hospital bed.
• the propulsion system is configured to lift two wheels from the bed.
• the system has lateral (direction parallel to the axis of the motorized wheels) and longitudinal (direction perpendicular to the axis of the wheels) dimensions which are important: the rear platform exceeds the bed and the distance between the non-motorized wheels can exceed the dimensions of the bed, which can be inconvenient for moving the bed, especially in a small space, such as a hallway or a hospital elevator.
• the systems of the prior art are not very adaptable.
• the user may be faced with an incompatibility of the system with the situation he is facing.
• a stretcher bearer who uses the system may be called in to carry a hospital bed, but upon arrival the situation may have changed and the stretcher bearer may then be instructed to transport the patient in a seated position. He must then find a wheelchair, which requires time and adapted logistics.
• it may be called upon to transport someone initially in a seated position but upon arrival, moving in a seated position may prove to be risky or even impossible and it is then necessary that the equipment at his disposal, in the occurrence, the propulsion system, can quickly adapt to the changing situation to allow the hospital bed to be moved.
• the invention relates to a removable electric propulsion system for a rolling object, the propulsion system comprising a chassis fitted at least one wheel driven by an electric machine, and at least one non-driven wheel, and means for coupling the propulsion system to the rolling object.
• the coupling means comprise means for gripping and lifting at least one wheel of the rolling object.
• the system includes a seating device with a seat and a back, and this seating device is foldable between an extended position allowing a user to sit up and a collapsed position.
• said means of rotation comprises a connecting axis of direction substantially perpendicular to the longitudinal direction of said frame, said connecting axis being positioned at the junction between said backrest and said seat.
• a rotation is carried out, along said connecting axis, of said seat or of said backrest, respectively relative to said backrest or to said seat.
• a vertical translation is carried out upwards of said seating device to position said seating device.
• FIG. 8 shows a third embodiment of the method of deploying the seating device according to the invention.
• the present invention relates to an electric propulsion system for a rolling object.
• An electric propulsion system is a removable system to assist the movement of the rolling object, in order to limit the efforts required for the movement of the rolling object.
• This electric propulsion system comprises at least one electric machine for its drive.
• a rolling object is an object that has at least two wheels in order to move it.
• the rolling object can be of any shape, including a rolling bed, such as in particular those used in hospitals, a wheelchair, a cart, such as used for logistics, for example hospital logistics or commercial logistics (depending on an example a supermarket trolley), all rolling furniture.
• a rolling object comprises at least two wheels, preferably three or four.
• at least one wheel, preferably two wheels of the rolling object are idle wheels, in other words they are off-center wheels orientable around a vertical axis.
• the rolling object is preferably non-motorized.
• the electric propulsion system according to the invention comprises:
• the electric propulsion system may include a handlebar, allowing manipulation, movement and orientation of the electric propulsion system by a user.
• the coupling of the rolling object to the propulsion system is achieved by at least one wheel of the rolling object, preferably by at least one idler wheel of the rolling object.
• the rolling object therefore does not need to be adapted for the electric propulsion system, which makes the electric propulsion system universal to various rolling objects.
• the terms “longitudinal”, “transverse”, “horizontal” and “vertical” determine the axes and / or directions of the system when the system is placed on a flat and level ground (ie. i.e. on ground without slope, in other words, there are no differences in altitude on the ground) and in operating situation.
• the longitudinal direction corresponds to the main direction of movement of the electric propulsion system.
• the transverse direction is the direction orthogonal to the longitudinal direction of the system in the horizontal plane.
• the vertical direction is orthogonal to the horizontal plane of the system.
• the means for gripping the wheel of the rolling object allow the wheel to be gripped.
• these gripping means can comprise a gripper system, a wedging system, magnetic means, adhesive means or any similar system.
• the gripping means can be movable so as to adapt to all wheel sizes and wheel spacing.
• the movement of the gripping means can be implemented by means of one or more jacks, for example an electric jack, a screw-nut system, a rack-and-pinion system or any similar means.
• the wheel lifting means make it possible to raise the wheel of the rolling object, so that this wheel of the rolling object no longer touches the ground, thus facilitating the movement of the rolling object by the propulsion system electric.
• the mass of the rolling object supported by this wheel is then transferred to the electric propulsion system. This allows in particular to provide the necessary grip for the traction of the motorized wheel of the electric propulsion system.
• the lifting can be implemented by means of one or more jacks, for example an electric jack, a screw-nut system, a rack-and-pinion system or any similar means.
• the system also comprises a seating device comprising at least a backrest and a seat, the seating device being foldable between a deployed position allowing a user to sit down and a folded position (not allowing a user to sit down).
• the seating device can in particular be intended for a patient.
• the seating device can include at least one means of deploying / refolding the seating device in order to deploy and fold it.
• This folding seat device is particularly advantageous for the user because it allows the user, for example a stretcher bearer, to be able to adapt quickly and efficiently to the situation with which he has to face.
• the stretcher bearer when the stretcher bearer had not planned to move the patient in a seated position but this position is ultimately necessary for his movement when the stretcher bearer arrives, the stretcher bearer can deploy the seating device, without having to search for an available wheelchair. The result is reduced intervention time and improved service.
• the stretcher bearer may be called upon to move a patient in a seated position on the propulsion system, the seating device then being intended to be used in the deployed position, but the medical situation at the arrival of the stretcher bearer may require to move the patient in a horizontal position, on his hospital bed. In this case, the stretcher can quickly fold up the seating device and hitch the bed to the propulsion system to move the patient.
• the integration of a folding seat device on the propulsion system allows a better adaptation of the user, the stretcher bearer for example, to the situation with which he is confronted in real time. It also allows better efficiency and increased speed of intervention by the user, stretcher bearer for example, thus improving the service provided by the user.
• the seating device In the unfolded position, the seating device can also allow the transport of certain materials placed on the seat.
• the seat and the backrest of the seating device in the folded position, can be positioned one next to the other so as to reduce their bulk in the folded position.
• the bearing surfaces on which a user sits
• the backrest can form an angle close to 0 ° to the seat in the folded position.
• the seat and the seat can form a flat surface by being side by side in the folded position; in other words, the backrest can form an angle of 180 ° to the seat.
• the seating device in the folded position, is compact and does not interfere with the grip of the wheels of the rolling object, allowing the propulsion system to be easily adaptable to different rolling objects.
• the seating device (in the folded position and in the unfolded position) is arranged longitudinally between the motorized wheel and the non-motorized wheels. In this way, the longitudinal bulk of the removable propulsion system remains limited and is not affected by the presence of the seating device.
• the coupling means may comprise means for orienting at least one wheel of the rolling object, called a gripped wheel (by the gripping means), in a direction forming a non-zero angle with the direction.
• longitudinal direction of the chassis of the propulsion system for example the angle between the orientation of the gripped wheel and the longitudinal direction of the chassis may be at least 10 °.
• the coupling means may comprise means for orienting the gripped wheel in a direction substantially perpendicular to the longitudinal direction of the chassis of the propulsion system (in other words, the wheel of the rolling object is placed in a parallel direction. or substantially parallel to the lateral direction of the chassis).
• the longitudinal direction of the chassis is defined by the direction which connects the motorized wheel to the non-motorized wheel.
• the longitudinal direction corresponds to the main direction of movement of the electric propulsion system.
• substantially perpendicular is meant a direction forming an angle between 80 and 100 ° relative to the longitudinal direction.
• the orientation means of the wheel of the rolling object can be implemented by moving the gripping means of the wheel.
• the electric propulsion system can perform the following sequence of steps for the coupling: orientation of the wheel of the rolling object in a direction different from the longitudinal direction of the chassis, gripping of the wheel of the rolling object and lifting of the wheel of the rolling object.
• the electric propulsion system may further include an electric battery for powering the electric machine.
• the electric battery can be placed on or under the frame, for example at the longitudinal end of the frame near the motorized wheel, or at the longitudinal end of the frame near the non-motorized wheels. Alternatively, the battery can be placed on the handlebars. In addition, the battery can be removable in order to facilitate its recharging or replacement. Alternatively, the battery may not be removable.
• the non-motorized wheels can be idle wheels, that is to say off-center wheels orientable about a vertical axis.
• non-motorized wheels can pivot relative to the frame about an axis of vertical orientation, and the axis of rotation of the wheel can be off-center (non-concurrent) with respect to the axis of vertical orientation.
• the backrest and the seat when the seat device is folded, can be substantially vertical.
• the space requirement in the horizontal plane, for example longitudinal, of the seating device is limited.
• the invention also relates to a method for deploying / folding a seating device of a propulsion system as described above, in which, in order to deploy the seating device, at least one rotation and / or one translation of the device is carried out.
• seating device and for which the folding of the seating device is effected by reverse steps to those of the deployment of the seating device.
• at least one step of vertical translation of the entire seating device, backrest, seat or link pin can be performed.
• One can also, alternately or in combination, perform a relative rotation of the backrest and the seat to deploy the system relative to the connecting axis, for example, and / or rotate the seating device in the unfolded or folded position.
• we can unfold / fold the seat device and position it judiciously to limit the bulk.
• a vertical translation of the connecting axis is carried out, upwards, the backrest and the seat being folded, in substantially horizontal initial positions, for example placed on the frame, and in substantially vertical final position; thus, the vertical displacement of the connecting axis causes a rotation of the backrest and of the seat around the connecting axis, until the backrest and the seat are substantially vertical (by gravity).
• the backrest and the seat are then suspended by the connecting pin.
• - A rotation is carried out, along the connecting axis, of the seat or of the backrest, respectively relative to the backrest or the seat, to move from a position where the seat and the backrest are against each other to a position “Open”, that is to say forming an angle between the seat and the backrest.
• the rotation effected is preferably of the order of 90 °, for example between 80 and 120 °.
• a vertical translation of the seating device is performed to position the seating device.
• the translation can be carried out before or after the relative rotation of the backrest and the seat.
• the translation of the seating device is performed in the deployed position. Otherwise, the translation of the seating device is carried out in the folded position.
• FIG. 1 illustrates, schematically and in a non-limiting manner, an electric propulsion system according to one embodiment of the invention.
• Figure 1 is a top view of the electric propulsion system 1.
• the electric propulsion system 1 comprises a frame 2.
• the x axis corresponds to the longitudinal axis of the frame 2 and to the main direction of displacement of the propulsion system 1, and the y axis corresponds to the lateral axis of the chassis 2.
• the chassis 2 supports three wheels (alternatively the chassis 2 can include four wheels).
• the frame 2 supports a wheel 3 (alternatively the frame 2 can support two wheels 3), which is a wheel driven by an electric machine (not shown).
• the wheel 3 is orientable relative to the frame 2, around a vertical axis 8.
• the seating device also comprises two armrests 53, on each side of the seat 51, so as to keep the user (the patient) in position.
• Each of these armrests 53 comprises a first part 55 and a second part 54, interconnected by an articulation 59 (an axis for example) so as to allow relative rotation of the first part 55 with the second part 54.
• the first part 55 is connected to the seat 51 by a pivot link 56 (articulation, for example an axis of transverse direction) and the second part 54 is connected to the backrest 50 by another pivot link 57.
• the armrests 53 are deployed by driving the deployment of the seat 51 relative to the back 50.
• the armrests 53 are folded up by driving the folded back of the seat 51 relative to the back 50.
• the seating device is rotated R3 around the joint 52, by approximately 90 °.
• the angle existing at the end of the rotation R2 between the seat 51 and the backrest 50 remains constant, close to 90 °.
• the rotation R3 drives the deployed seating device and therefore simultaneously concerns the seat 51 and the backrest 50, without performing relative rotation between these two elements.
• the rotation R3 is approximately 90 ° around the joint 52, the seat 51 is substantially horizontal and the backrest 50 is substantially vertical. In other words, at the end of the R3 rotation, the seating device is ready for use.
• the seat device is in the folded position (left diagram), the seat 51 and the backrest 50 being substantially horizontal, one against the other, an articulation 52 serving for the relative rotation. between backrest 50 and seat 51.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Nursing (AREA)
• Handcart (AREA)
• Motorcycle And Bicycle Frame (AREA)
• Invalid Beds And Related Equipment (AREA)
• Pivots And Pivotal Connections (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=70457029

Family Applications (1)

Country Status (8)

Family Cites Families (6)

• 2020
  • 2020-03-19 FR FR2002680A patent/FR3108302B1/fr active Active
• 2021
  • 2021-03-08 CN CN202180022440.5A patent/CN115315239A/zh active Pending
  • 2021-03-08 CA CA3170009A patent/CA3170009A1/fr active Pending
  • 2021-03-08 AU AU2021238469A patent/AU2021238469A1/en active Pending
  • 2021-03-08 US US17/912,100 patent/US20230159075A1/en active Pending
  • 2021-03-08 EP EP21709060.4A patent/EP4120985A1/fr active Pending
  • 2021-03-08 WO PCT/EP2021/055771 patent/WO2021185613A1/fr unknown
  • 2021-03-08 JP JP2022556562A patent/JP2023518468A/ja active Pending

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