WO2011074057A1 - Chaise roulante tout-terrain - Google Patents

Chaise roulante tout-terrain Download PDF

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Publication number
WO2011074057A1
WO2011074057A1 PCT/JP2009/070848 JP2009070848W WO2011074057A1 WO 2011074057 A1 WO2011074057 A1 WO 2011074057A1 JP 2009070848 W JP2009070848 W JP 2009070848W WO 2011074057 A1 WO2011074057 A1 WO 2011074057A1
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WO
WIPO (PCT)
Prior art keywords
tire
wheelchair
rough terrain
width
wheel tire
Prior art date
Application number
PCT/JP2009/070848
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English (en)
Japanese (ja)
Inventor
司 平野
正善 中村
Original Assignee
株式会社ノースウェスト
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 株式会社ノースウェスト filed Critical 株式会社ノースウェスト
Priority to PCT/JP2009/070848 priority Critical patent/WO2011074057A1/fr
Publication of WO2011074057A1 publication Critical patent/WO2011074057A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • 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
    • A61G5/1054—Large wheels, e.g. higher than the seat portion

Definitions

  • the present invention relates to a wheelchair technology capable of traveling on rough terrain such as sand, snowy roads, gravel roads, marshes, and cobblestones.
  • the present invention minimizes the remodeling work of a conventional wheelchair and can travel on rough terrain such as a snowy road without impairing the comfort of the passenger.
  • the purpose of the present invention is to provide a wheelchair for rough terrain that can support the rescue of elderly people who are difficult to walk from the disaster area.
  • Normal wheelchairs such as self-propelled wheelchairs, assistive wheelchairs, and reclining wheelchairs have a chair body frame, caster-type left and right front wheels attached to the chair body frame, and a rear wheel that has a large diameter and serves as a main tire. It has a seat surface, a backrest, left and right armrests, left and right flip-up steps, a spindle tire stopper, and a handle.
  • the rough terrain wheelchair according to the first aspect of the present invention has a rear wheel tire width of 3 to 8 inches in a wheelchair in which the rear wheel tire is a main shaft tire.
  • the main tire has various grooves in rough terrain such as sand, snowy road, gravel road, marshland, cobblestone, etc. It is possible to avoid the main shaft tire from getting stuck in depressions, stones, mud, snow, gaps in stone pavements, and unevenness.
  • the contact area with rough terrain can be increased, and the rear wheel tire is less likely to sink.
  • the replacement work is to remove the rear wheel tire and shaft from the existing wheelchair, replace the rear wheel tire shaft with a longer one, and attach the thick rear wheel tire width of 3 to 8 inches to the replaced shaft. become.
  • There is no need to use a dedicated body and there is no need to modify the body side of the wheelchair body. It will be easily applicable to most commercial wheelchairs.
  • the front wheel tires are used as they are. This is because the width of the rear wheel tire is as thick as 3 to 8 inches, and the stability of the main axle tire has been improved, so that it is possible to run on rough terrain even without modification of the front wheel tire. is there.
  • the stability of the rear wheel tire has been improved by increasing the width of the rear tire to 3 to 8 inches. Therefore, it is possible to remove the front wheel tire or to use only one front tire.
  • four-wheel driving is ideal in terms of stability. In the case of a wheelchair, 4 wheels are used instead of 2 or 3 because stability is required.
  • the front wheel tire width is 2 to 6 inches and the front tire diameter is 6 to 10 inches.
  • the reason for this is that running on rough terrain can be performed more easily by increasing the diameter and width of the front tire.
  • the front tire fits into various grooves, depressions, stones, mud, snow, cobble gaps, unevenness, etc. This is to avoid this.
  • the ground contact area is increased to make it difficult to sink.
  • the stay length of the rear wheel brake is extended corresponding to the rear wheel tire width.
  • This is a modification of a pair of left and right rear wheel brake stays that serve as a stopper for the main spindle tire.
  • an extension stay is attached to the existing stay.
  • the existing brake (stopper) function is improved according to the rear wheel tire width. Since the existing brake (stopper) is used as it is and only the extension stay is attached, the modification work can be facilitated.
  • the frame width of the front wheel frame and the size of the front wheel frame diameter are set according to the front wheel tire width and the front wheel tire diameter. Enlarge. Only the frame width and the front wheel frame diameter of the front wheel frame other than the mounting part are changed without changing the size and specification of the mounting part of the wheelchair body frame. According to this configuration, it is easy to replace the front wheel tire with respect to the existing wheelchair.
  • the mounting portion is made to match the exchange method, size, and shape, which are standard for wheelchairs, and facilitate the work involved in changing the size of the front wheel tire width and front wheel tire diameter.
  • the rear wheel tire width is 4 inches or more
  • a handrail In order to prevent injury to the passenger's arm and dirt on the clothing when the rear tire width is thicker than 4 inches, a handrail must be provided inside the rear wheel tire, not outside the rear wheel tire. To do.
  • another reason for providing a handrail inside the rear wheel tire is that when the rear wheel width becomes thicker than 4 inches, it is difficult to reach the outside of the rear wheel tire.
  • the ratio of the diameters of the front tire and the rear tire is 1: 1 to 1: 4.
  • the ratio of the diameters of the front tire and the rear tire is 1: 5.
  • the ratio of the diameters of the front wheel tire and the rear wheel tire is set to 1: 1 to 1: 4, and the front and rear wheel tires sink on the rough terrain such as sand and cannot move.
  • a wheelchair having a front wheel tire diameter of 8 inches and a rear wheel tire diameter of 24 inches corresponds to a case where the ratio of the diameters of the front wheel tires and the rear wheel tires is 1: 3.
  • the wheelchair for rough terrain according to the first aspect described above is a wheelchair whose rear wheel tire is a main shaft tire
  • the wheelchair for rough terrain according to the second aspect is a wheelchair whose front wheel tire is a main shaft tire. is there.
  • the wheelchair for rough terrain according to the second aspect of the present invention is a wheelchair in which a front wheel tire is a main shaft tire and has a front wheel tire width of 3 to 8 inches and a front wheel tire diameter of 14 to 26 inches.
  • the front tire width is increased to 3 to 8 inches is to prevent the front tire from getting stuck in various grooves, depressions, stones, mud, snow, cobble gaps, and irregularities on rough terrain. .
  • the ground contact area is increased to make it harder to sink.
  • the front wheel tire diameter is 14 to 26 inches, which is the same as the normal front wheel tire diameter in a wheelchair in which the front tire is the main axle tire.
  • the rear tire width is 2 to 6 inches and the rear tire diameter is 6 to 10 inches.
  • the reason for this is that running on rough terrain can be facilitated by increasing the diameter and width of the rear wheel tire.
  • the reason for increasing the rear tire width is that the front tire fits into various grooves, depressions, stones, mud, snow, cobble gaps, and irregularities on rough terrain, just as the reason for increasing the front tire width. This is to avoid this.
  • the ground contact area is increased to make it difficult to sink.
  • the stay length of the front wheel brake is extended corresponding to the width of the front tire.
  • the stay for the pair of left and right front brakes that serve as stoppers for the main spindle tire is modified. Specifically, an extension stay is attached to the existing stay.
  • the existing brake (stopper) function is improved according to the width of the front tire. Since the existing brake (stopper) is used as it is and only the extension stay is attached, the modification work can be facilitated.
  • the ratio of the diameters of the front tire and the rear tire is preferably 1: 1 to 4: 1.
  • the ratio of the diameters of the front tire and the rear tire is 5: 1.
  • the ratio of the diameters of the front and rear wheel tires of a normal wheelchair described above is set, the front and rear wheel tires sink due to rough terrain such as sand and become immovable.
  • the ratio of the diameters of the front tire and the rear tire is set to 1: 1 to 4: 1, and the front and rear wheel tires sink in rough ground such as sand. Avoid being immobile.
  • a wheelchair in which the diameter of the front tire is 9 inches and the diameter of the rear tire is 3 inches corresponds to a case where the ratio of the diameter of the front tire to the rear tire is 3: 1.
  • the rough terrain wheelchair according to the third aspect of the present invention is such that a motor is mounted on the rough terrain wheelchair according to the first aspect or the second aspect, and the main shaft tire is driven electrically. According to such a configuration, even when there is no caregiver, an elderly person who is difficult to walk, a sick person, or an injured person can easily move freely without effort and can easily move over a long distance.
  • the modification work of the conventional wheelchair is reduced as much as possible, and it is possible to travel on rough terrain such as a snowy road without impairing the comfort of the passenger, and care recipients and life assistance It has the effect of being able to carry out rescue support for elderly people who are difficult to walk from the transport of people and disaster areas.
  • Wheelchair front and rear wheel widths are different from those of existing wheelchairs so that the front and rear wheel tires sink into rough terrain such as sand and become unmovable. Enable.
  • the perspective view of the wheelchair for rough terrain of Example 1 Rear view of rear tire Illustration of rear wheel tire and rear wheel External view of front wheel tire Illustration of front wheel tire and front wheel Perspective view of front wheel tire and its frame Side view of the wheelchair for rough terrain of Example 1 (however, other than front and rear wheel tires are indicated by dotted lines)
  • Front view of the wheelchair for rough terrain of Example 1 (however, other than front and rear wheel tires are indicated by dotted lines)
  • Rear view of the wheelchair for rough terrain of Example 1 are indicated by dotted lines
  • Plan view of wheelchair for rough terrain of Example 1 (however, it is indicated by dotted lines except for front and rear wheel tires)
  • Bottom view of the wheelchair for rough terrain of Example 1 (however, other than front and rear wheel tires are indicated by dotted lines)
  • the wheelchair for rough terrain of Example 1 has a rear wheel tire of a main shaft tire.
  • FIG. 1 shows the appearance (slope view) of the wheelchair for rough terrain of the first embodiment.
  • the wheelchair 1 for rough terrain of Example 1 has the same configuration as a normal self-propelled wheelchair, a wheelchair body frame (12, 13), caster-type left and right front wheel tires 3 attached to the body frame,
  • the left and right rear wheel tires 2 serving as main tires, the seat surface 4, the backrest 5, the left and right armrests 8, the left and right flip-up step 6, the handle 7, the stay 9 serving as a brake for the rear wheel tire 2, and the operation lever 10 are provided. It is to be prepared.
  • the rear wheel tire width is larger than the rear wheel tire width of a normal wheelchair.
  • the width of the rear wheel tire of a normal wheelchair (the portion corresponding to L1 in FIG. 2) is about 2 inches, but the rear tire width (L1) of the wheelchair for rough terrain in Example 1 is shown in FIG. As shown, it is about 5 inches (125 mm).
  • the width of the rear wheel frame 21 is increased according to the width of the rear wheel tire (FIG. 3 (1)). Further, as shown in FIG. 3 (2), the diameter of the rear wheel tire is about 24 inches (610 mm).
  • the rear wheel frame 21 is made of a lightweight metal such as aluminum.
  • the front-wheel tire width and the front-wheel tire diameter are larger than the front-wheel tire width and diameter of a normal wheelchair.
  • the front wheel tire width of a normal wheelchair (the portion corresponding to L2 in FIG. 4) is about 1 inch, but the front wheel tire width (L2) of the wheelchair for rough terrain of Example 1 is as shown in FIG. 5 (1).
  • the width of the front wheel frame 31 is increased according to the width of the front tire (FIG. 5 (1)).
  • the front wheel frame 31 is made of a lightweight metal such as aluminum. Further, as shown in FIG. 5 (2), the front wheel tire diameter is 10 inches (254 mm).
  • FIG. 6 shows a perspective view of the front tire and its frame.
  • the front wheel tire 3 that is an auxiliary wheel is detachably attached to the body frame of the wheelchair in a caster manner.
  • the U-shaped frame 34 fixed to the rotating shaft 32 of the front wheel frame 31 and the upper body frame fitting portion 35 realize caster-type attachment / detachment.
  • the main body frame fitting portion 35 is matched with the exchange method, size, and shape that are standard for wheelchairs. As a result, the modification work accompanying the size change of the front tire width and the front tire diameter is facilitated and improved in efficiency.
  • the front tire diameter is 10 inches and the rear tire diameter is 24 inches.
  • the ratio of the diameters of the front tire and the rear tire is 1: 2.4.
  • the width of the front wheel tire and the rear wheel tire is 5 inches.
  • a side view, a front view, a rear view, a plan view, and a bottom view of the wheelchair for rough terrain of Example 1 are shown in FIGS. 7 to 11, respectively.
  • the seat surface is inclined backward as compared with the normal wheelchair. This is because the ratio of the diameters of the front and rear tires of a normal self-propelled wheelchair is 1: 5, whereas in the case of the rough terrain wheelchair of Example 1, the diameters of the front and rear tires are as follows. This is because the ratio is 1: 2.4.
  • the increase in the front tire diameter can prevent the front tire from getting stuck in various grooves, depressions, stones, mud, snow, cobble gaps, unevenness, etc. on rough terrain. It is easy to get over obstacles such as stairs and steps. Furthermore, because the seating surface tilts backward, the passenger's weight is applied to the rear wheel tire side, so that the front wheel tire gets over the obstacle such as steps and the front wheel tire gets stuck in the groove etc. Escape is easier.
  • Table 1 shows an adult male with a standard weight (80 kg) holding a handle from the back of a wheelchair on a snowy road (in a ski slope where snow is not removed), sand (shore sand), and shrine gravel road. This is a result of an actual experiment on whether or not the wheelchair is movable when the button is pressed. In the table below, “OK” indicates that movement was possible, and “NG” indicates that movement was not possible.
  • FIG. 12 is a diagram showing a rear wheel tire stopper and a rear wheel tire.
  • FIG. 12A shows a stopper provided on the rear tire 2a having a normal tire width.
  • the stopper is composed of a stay 9 a that is operated by the operation lever 10 and the cam mechanism 11.
  • the stopper allows the rear wheel tire to be easily stopped by simply operating the operation lever 10 back and forth, and even a clumsy hand or an elderly person with weak power can push it in softly.
  • the stay tire length must be extended because the rear wheel tire width is thicker than usual.
  • an extension stay 9b having a length corresponding to the width of the rear wheel tire is attached to the existing stay 9a. Since the existing stopper can be used, remodeling work becomes easy.
  • FIG. 13 shows an over fender provided above the rear wheel tire.
  • a handrail is provided outside the rear wheel tire.
  • a handrail is provided inside the rear wheel tire when the rear wheel tire width is 4 inches or more.
  • Example 2 a wheelchair in which the front wheel tire is a main shaft tire will be described.
  • the side view of the wheelchair for rough terrain of Example 2 is shown in FIG.
  • the diameter of the front tire 3b of the main shaft tire is made larger than the diameter of the rear tire 2b of the auxiliary wheel.
  • the size of the wheel frame (21b, 31b) is changed according to the tire diameter.
  • the rear wheel tire of the auxiliary wheel is a caster type.
  • the rotation shaft 32b of the front tire of the main shaft tire fixes its bearing to the main body frame (12, 13).
  • the front tire diameter is designed in the range of 14 to 26 inches
  • the rear tire diameter is designed in the range of 6 to 10 inches.
  • the diameter ratio of the front wheel tire and the rear wheel tire is designed to be 1: 1 to 4: 1.
  • the main tire is designed so that the front tire width is 3 to 8 inches and the rear tire width is 2 to 6 inches.
  • the front tire width of the main tire is set to be larger than the rear tire width of the auxiliary tire.
  • a stay length serving as a stopper for the front wheel tire is extended corresponding to the width of the front wheel tire.
  • Example 1 and Example 2 Although the above-described wheelchair for rough terrain of Example 1 and Example 2 is a self-propelled type, a motor is mounted, and the rear wheel tire or the front wheel tire of the main shaft tire may be driven by electricity. By installing the electric motor, elderly people who are difficult to walk, sick people, and injured people can easily move even when caregivers are absent.
  • the diameter of the rear wheel tire or the front wheel tire is larger than that of the other tire, but the diameters of the front wheel tire and the rear wheel tire are the same. It doesn't matter.
  • the main tire is either a front tire, a rear tire, or both. When the diameters of the front tire and the rear wheel tire are the same, it is preferable to use an automatic running type equipped with an electric motor rather than a self-running type.

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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)
  • Automatic Cycles, And Cycles In General (AREA)
  • Tires In General (AREA)

Abstract

La présente invention concerne une chaise roulante tout-terrain qui peut rouler sur tout type de terrain, par exemple une route enneigée, sans compromettre le confort du passager et tout en minimisant le travail de transformation d'une chaise roulante conventionnelle. La chaise roulante peut en outre supporter le transport d'une personne âgée ou d'une personne assistée, soulager une personne âgée ayant des difficultés à marcher, ou équivalents. La présente invention concerne spécifiquement une chaise roulante comprenant le cadre de corps de chaise, les roues avant et roues arrière droite et gauche de type roulettes fixées au cadre de corps de chaise, la surface de support, le dossier, les appui-coudes droit et gauche, et les repose-pieds pivotants droit et gauche, la largeur de pneu des roues arrière étant de 3 à 8 pouces, la largeur de pneu des roues avant étant de 2 à 6 pouces, le diamètre de pneu des roues avant étant de 6 à 10 pouces, et le rapport de rayons entre le pneu d'une roue avant et le pneu d'une roue arrière étant de 1/1 à 1/4. Etant donné que les largeurs de pneu des roues avant et de pneu des roues arrière de la chaise roulante sont différentes de la largeur de pneu des chaises roulantes existantes et que les pneus sont épais, les roues avant et arrière de la chaise roulante ne s'enfonceront pas dans un terrain grossier tel qu'une zone sablonneuse, la chaise roulante ne sera pas immobilisée et pourra être utilisée sur tout type de terrain.
PCT/JP2009/070848 2009-12-14 2009-12-14 Chaise roulante tout-terrain WO2011074057A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/070848 WO2011074057A1 (fr) 2009-12-14 2009-12-14 Chaise roulante tout-terrain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/070848 WO2011074057A1 (fr) 2009-12-14 2009-12-14 Chaise roulante tout-terrain

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WO2011074057A1 true WO2011074057A1 (fr) 2011-06-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2991163A1 (fr) * 2012-05-31 2013-12-06 Luc Soubielle Fauteuil roulant electrique de plage pour des personnes a mobilite reduite
US8678402B2 (en) 2012-08-06 2014-03-25 Arlen Helterbrand Portable convertible wheelchair
FR3000013A1 (fr) * 2012-12-21 2014-06-27 Jean-Francois Allheilly Vehicule tout terrain de type cycle pour personne a mobilite reduite
ES2556163A1 (es) * 2014-07-08 2016-01-13 César CALERO CEBRIÁN Silla de ruedas plegable

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224980A (en) * 1988-11-08 1990-05-23 Peter James Rae Bradshaw A wheelchair
JPH02503874A (ja) * 1987-06-22 1990-11-15 アイエヌエム　インダストリテクニック　エービー 身体障害者のための動力駆動乗り物
WO1992007539A1 (fr) * 1990-11-01 1992-05-14 Nicholas Ewart Edmund Fauteuil roulant
JPH0767919A (ja) * 1993-06-22 1995-03-14 Chikako Nagasaki 車椅子
JP2000000272A (ja) * 1998-04-14 2000-01-07 Meekoo Kogyo Kk 車椅子
DE10237878A1 (de) * 2002-08-19 2004-07-08 Christian Nachtwey Para Golfer ein elektrisch betriebenes Gerät für Golf spielende Rollstuhlfahrer
US6869084B2 (en) * 2002-05-22 2005-03-22 William Penn Charter School Dignified broad footprint beach wheelchair

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02503874A (ja) * 1987-06-22 1990-11-15 アイエヌエム　インダストリテクニック　エービー 身体障害者のための動力駆動乗り物
GB2224980A (en) * 1988-11-08 1990-05-23 Peter James Rae Bradshaw A wheelchair
WO1992007539A1 (fr) * 1990-11-01 1992-05-14 Nicholas Ewart Edmund Fauteuil roulant
JPH0767919A (ja) * 1993-06-22 1995-03-14 Chikako Nagasaki 車椅子
JP2000000272A (ja) * 1998-04-14 2000-01-07 Meekoo Kogyo Kk 車椅子
US6869084B2 (en) * 2002-05-22 2005-03-22 William Penn Charter School Dignified broad footprint beach wheelchair
DE10237878A1 (de) * 2002-08-19 2004-07-08 Christian Nachtwey Para Golfer ein elektrisch betriebenes Gerät für Golf spielende Rollstuhlfahrer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2991163A1 (fr) * 2012-05-31 2013-12-06 Luc Soubielle Fauteuil roulant electrique de plage pour des personnes a mobilite reduite
US8678402B2 (en) 2012-08-06 2014-03-25 Arlen Helterbrand Portable convertible wheelchair
FR3000013A1 (fr) * 2012-12-21 2014-06-27 Jean-Francois Allheilly Vehicule tout terrain de type cycle pour personne a mobilite reduite
ES2556163A1 (es) * 2014-07-08 2016-01-13 César CALERO CEBRIÁN Silla de ruedas plegable

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