WO2005107678A2 - Dispositif permettant de monter sur un trottoir, son utilisation et son module d'assistance a la marche dote d'un dispositif permettant de monter sur un trottoir - Google Patents

Dispositif permettant de monter sur un trottoir, son utilisation et son module d'assistance a la marche dote d'un dispositif permettant de monter sur un trottoir Download PDF

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Publication number
WO2005107678A2
WO2005107678A2 PCT/NL2005/000348 NL2005000348W WO2005107678A2 WO 2005107678 A2 WO2005107678 A2 WO 2005107678A2 NL 2005000348 W NL2005000348 W NL 2005000348W WO 2005107678 A2 WO2005107678 A2 WO 2005107678A2
Authority
WO
WIPO (PCT)
Prior art keywords
climbing device
rotation point
kerb
foot part
rotation
Prior art date
Application number
PCT/NL2005/000348
Other languages
English (en)
Other versions
WO2005107678A3 (fr
Inventor
Jan Corné VAN DONGEN
Gijs Hofman
Martijn Schaaper
Arijanneke Anna Gerda Jozephina Baptist
Original Assignee
Bob, Bewegingstechnologisch Ontwerp Bureau
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 Bob, Bewegingstechnologisch Ontwerp Bureau filed Critical Bob, Bewegingstechnologisch Ontwerp Bureau
Publication of WO2005107678A2 publication Critical patent/WO2005107678A2/fr
Publication of WO2005107678A3 publication Critical patent/WO2005107678A3/fr

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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
    • B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/04—Wheeled walking aids for patients or disabled persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H2003/001—Appliances for aiding patients or disabled persons to walk about on steps or stairways
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/04—Wheeled walking aids for patients or disabled persons
    • A61H2003/046—Wheeled walking aids for patients or disabled persons with braking means

Definitions

  • Kerb climbing device its use and walking aid provided with a kerb climbing device
  • the present invention relates to a kerb climbing device, for passing height obstacles by means of a carriage movable by manpower which is provided with at least one wheel
  • the kerb climbing device comprising a displacement mechanism in the form of a linkage which comprises a suspension part, a foot part and rotatable connecting arms, which connecting arms are provided between the foot part and the suspension part for displacing the foot part with respect to the suspension part between a climbing position and an end position, and the displacement mechanism being provided with adjustment means for adjusting the foot part in the climbing position.
  • a kerb climbing device of this type is presented in British Patent GB 2237250, and its operation is illustrated for a three- wheeled vehicle, such as an electric scooter for people who have difficulty in walking.
  • the kerb climbing device comprises a linkage which, at the front wheel, is secured to a front fork in which the front wheel is secured.
  • the section of the front fork at which the connecting arms are connected is referred to in the context of this description as the suspension part.
  • a foot part for climbing a height obstacle such as for example a kerb, which is approached from a roadway.
  • the foot part basically consists of two parts, namely a climbing element and a leg fixedly secured to it, the connecting arms being rotatably secured to the leg.
  • the connecting arms are held, under stress from a tension spring, in a position which is such that the foot part is in the climbing position, i.e. in a position in which the climbing element of the foot part is at a suitable angle to climb up the obstacle. Therefore, unlike in the situation in which the kerb climbing device is absent - the height obstacle is climbed gradually, in the sense that the vertical component of the climbing movement is relatively small compared to the horizontal component.
  • the kerb climbing device allows the height obstacle to be passed over gradually, so that the height obstacle is no longer taken so violently, this solution has a number of drawbacks, in particular with a view to its use for a walking aid.
  • the foot part of the kerb climbing device described in GB 2237250 comprises a linkage which is secured to the fork of the swivel front wheel of the three-wheeled vehicle.
  • This has the inherent drawback that the front wheel has to be accurately aligned so that the kerb climbing device comes into contact with the obstacle to be climbed in the right direction.
  • it is difficult to keep the kerb climbing device in the correct direction during climbing, on account of the front fork being rotatable, with the result that the kerb climbing device can unintentionally start to pivot and can even shoot out of the climbing position. Therefore, considerable skill is required on the part of the driver to use the kerb climbing device, with the result that the ease of use decreases.
  • the kerb climbing device is used in combination with, for example, a walking aid, which has more swivel front wheels, it is even more difficult for the user to direct the front wheels.
  • a walking aid which has more swivel front wheels
  • These drawbacks apply to an even greater extent if the front wheels can pivot freely.
  • Another drawback of the kerb climbing device described in GB 2237250 is associated with the use of the kerb climbing device for carriages which are moved by manpower, in particular for walking aids, such as rollators.
  • These walking aids are constructed from a frame and, connected to it, wheels and grip means for the user, the weight of the frame being relatively low compared to the weight of the user.
  • the grip means - When the user is supporting himself on the grip means - generally designed as handles - by means of his own weight, he exerts a force which is relatively high compared to the weight of the rollator, which force, when the rollator is kept in a horizontal position, does not cause a moment of force on account of the positioning of the wheels of the rollator with respect to the frame and the grip means.
  • this positioning is generally as follows: the rollator has two front wheels and two rear wheels which, when seen from above, are arranged at the corners of an imaginary rectangle, while the frame and the handles are located above and inside the imaginary rectangle.
  • a kerb climbing device in accordance with GB 2237250 when used on a rollator, has the drawback that pushing the rollator over the height obstacle still takes a relatively large amount of force, with the result that the stability of the rollator when negotiating the obstacle is also adversely affected.
  • a further drawback of the kerb climbing device according to the prior art is that the suspension part forms a non-releasable part of the three-wheeled vehicle. Therefore, fitting a kerb climbing device to an existing three-wheeled vehicle which does not yet have the features for fitting the connecting arms to the suspension part entails additional installation time. It is an object of the invention to completely or partially resolve one or more of the above drawbacks, so as to provide an improved kerb climbing device with an increased ease of use when passing over height obstacles.
  • the kerb climbing device of the type described above comprises as connecting arms a front arm and a rear arm, a top end of the front arm being rotatably connected to the suspension part via a first rotation point, a top end of the rear arm being rotatably connected to the suspension part via a second rotation point, and a bottom end of the front arm being rotatably connected to the foot part via a third rotation point and a bottom end of the rear arm being rotatably connected to the foot part via a fourth rotation point, wherein the connecting lines between the first and second rotation points, between the second and fourth rotation points, between the fourth and third rotation points and between the third and first rotation points, when seen from the side, form a quadrilateral, the corners of which are located at the rotation points, and wherein the suspension part comprises a connecting member for releasably connecting it to the abovementioned carriage, in such a manner that, when seen from the side, the angle of the suspension part with respect to the
  • a kerb climbing device of this type comprises a linkage which, when fitted to a walking aid, allows the walking aid to perform a gradual climbing movement when climbing, with the vertical component of the climbing movement being relatively small compared to the horizontal component, certainly when compared to the prior art.
  • the fact that the linkage is in the form of a quadrilateral has the first advantage that, when the foot part comes into contact with the obstacle while the point of contact is between the third and fourth rotation points of the foot part, a lever effect is exerted by the force which the kerb climbing device exerts on the obstacle via the front arm, and vice versa also by the normal force which is exerted by the obstacle on the contact point of the foot part and which acts on the suspension part via the rear arm.
  • the kerb climbing device according to the invention also has the advantage that, when the foot part comes into contact with the obstacle, the force which the obstacle exerts on the foot part is transmitted with better support to the walking aid compared to the prior art, in which the force is transmitted via a single leg.
  • the shape of the linkage makes it possible for the foot part to execute a compact travel in the horizontal direction between the climbing position and end position for a defined height difference which has to be bridged.
  • the kerb climbing device is suitable for walking aids, such as a rollator, in which in use it is advantageous to minimize the travel of the foot part, for example in order to reduce the number of unintentional collisions and because the user himself is less likely to knock against the kerb climbing device as a result of his own movement.
  • the kerb climbing device has the additional advantage that the suspension part comprises a connecting member for releasably connecting it to the carriage, the connecting member allowing the angle at which the suspension part is connected to the carriage, as seen in side view, to be adjusted.
  • this angle can be defined as the angle of the suspension part with respect to the ground surface on which the carriage is resting, when seen from the side.
  • the kerb climbing device being releasable, it is easy to fit to a carriage without the carriage itself having to be modified or adjusted, as in the case of the kerb climbing device being fixedly connected to the carriage. As a result, a kerb climbing device can easily be transferred to another carriage and can also easily be replaced.
  • the connecting member enables to adjust the angle at which the suspension part is fitted with respect to the carriage. Since there are various types of carriages, which vary in terms of wheel height, and since the height at which the kerb climbing device is connected to the carriage via the connecting member may also vary, the angular adjustability makes it easy to adapt the kerb climbing device to the type of carriage.
  • the kerb climbing device is suitable in particular for wheelbarrows, prams, rollators, etc.
  • the kerb climbing device is fitted to a transverse tube of the frame of a rollator between the front wheels.
  • the connecting member is preferably a clamping structure by which the kerb climbing device can be secured to the frame of the carriage.
  • the top side and underside of the components of the kerb climbing device are defined with respect to the line on which the first and second rotation points lie when this line is parallel to the horizontal. Therefore, in a kerb climbing device the front arm and the rear arm are respectively beneath the first and second rotation points, and beneath that is the foot part, which is connected via the third and fourth rotation points.
  • the front and rear sides of the kerb climbing device are defined with reference to the front arm and the rear arm, the front arm, when the kerb climbing device is in use, passing over the obstacle earlier than the rear arm.
  • the third rotation point is in an advanced position with respect to the first rotation point (i.e. the third rotation point passes over the height obstacle earlier than the first rotation point)
  • the foot part is at an angle to the horizontal plane, on account of the fact that the third rotation point is in a higher position than the fourth rotation point.
  • the end position is adopted by the kerb climbing device when the foot part, after it has negotiated the obstacle, comes free of the contact point by virtue of the wheel of the carriage finding support on the obstacle.
  • the contact point between the foot part and the obstacle is virtually fixed. It is preferable for the third and fourth rotation points to be present in the vicinity of the front and rear ends of the foot part.
  • the first rotation point, the second rotation point, the third rotation point and the fourth rotation point respectively comprise a first axle, a second axle, a third axle and a fourth axle, these axles being substantially parallel to one another.
  • An embodiment of this type has the advantage that the rotation points offer a robust structure both with respect to the bearing load and with respect to transverse forces exerted on the kerb climbing device. The fact that the movement of the kerb climbing device is limited to a single degree of freedom (i.e.
  • the axles are preferably designed as a steel clamping bush axle with plastic sliding-contact bearings.
  • the axles are fixedly connected to the connecting arms, and the axles are accommodated rotatably in corresponding bushes provided in the suspension part and the foot part, respectively. It is advantageous for the kerb climbing device to be formed in such a manner that the suspension part, the foot part and the connecting arms have a width which is comparable to the length of the four axles, since this considerably strengthens the structure and at the same time keeps the dimensions compact.
  • the distance dl between the first and second rotation points is shorter than the distance d2 between the third and fourth rotation points.
  • the foot part executes a movement with respect to the suspension part, wherein the amplitude of the foot part is relatively large compared to the dimensions of the suspension part.
  • the extent to which the angle of the foot part with respect to the horizontal plane can vary is relatively large. Consequently, the foot part can remain of relatively small dimensions, with the result that the kerb climbing device takes up a relatively small amount of space, which promotes ease of use.
  • the distances between the first and second rotation points are equal to the distance between the third and fourth rotation points. It is advantageous for the dimensions of the kerb climbing device to be such that the distances between the first and second rotation points, third and fourth rotation points, first and third rotation points and second and fourth rotation points differ by a factor of no more than 3, preferably a factor of no more than 2. It is advantageous for the size of the kerb climbing device to be comparable to the wheels of the carriage for which it is used, in which case in particular the rear arm of the kerb climbing device is of a length which is comparable to the diameter of the wheel.
  • the dimensions of the kerb climbing device are such that it does not project far beyond the circumference of the wheels, resulting in the abovementioned advantage that the kerb climbing device causes few unintentional collisions during use.
  • the extension of the connecting line between the first rotation point and the third rotation point, on the one hand, and the extension of the connecting line between the second rotation point and the fourth rotation point, on the other hand intersect one another at an intersection point which lies above and behind the first rotation point.
  • This intersection point is also referred to as the momentary rotation centre (MRC) .
  • MRC momentary rotation centre
  • the MRC changes position with respect to the first rotation point. During this movement, the MRC follows an arc in which the MRC moves upwards and forwards. It is assumed that this movement of the MRC, since it has the same components (forward and upward) as the carriage moving over an obstacle, makes a contribution to further increasing the ease for a user to pass over the obstacle.
  • the foot part comprises a contact surface which is concave in form. The contact surface is the surface which makes contact with the obstacle and is located on the underside of the foot part.
  • a concave form enables the foot part to move between the end position and climbing position without the contact surface rubbing on the obstacle, which is of benefit to the durability of the contact surface.
  • the contact surface of the foot part is of flat design, and the same effect is achieved by adapting the other parts of the linkage. If the other parts permit, it is also possible for the foot part to be convex in form.
  • the foot part it is preferable for the foot part to comprise a friction-increasing contact surface.
  • a contact surface of this type increases the friction at the point of contact between the foot part and the obstacle during climbing, so that the slipping of the foot part over the obstacle is minimized.
  • the adjustment means comprise a torsion spring which engages on one of the connecting arms, and a stop for one of the connecting arms. This means that the foot part is always held in the climbing position when the kerb climbing device is not executing the climbing movement. Consequently, the kerb climbing device reverts to the climbing position immediately after an obstacle has been climbed, which increases the ease of use.
  • the stop is advantageously adjustable, so that the kerb climbing device can be set to a position which has been adjusted to the obstacles most frequently encountered by the particular user. It is preferable for the length of the front arm and/or rear arm of the kerb climbing device according to the invention to be adjustable. This offers the advantage that, as has already been noted above, the position of the foot part of the kerb climbing device can easily be adapted to changing conditions, such as the type of carriage, the mean obstacle height, the bearing load of the carriage, etc .
  • the kerb climbing device comprises an auxiliary front arm, which is telescopically displaceable in the longitudinal direction, and a front arm which is composed of a main front arm and a collapsible front arm, the auxiliary front arm being rotatably connected, at a top end via a fifth rotation point, to the suspension part in a position between the first and second rotation points, and being rotatably connected, at a bottom end via a sixth rotation point, to the foot part in a position in front of the main front arm, and the collapsible front arm, in the climbing position, resting on the foot part between the sixth rotation point and the main front arm, the collapsible front arm being rotatably connected, at a first end, to the foot part via the third rotation point and, at a second end, to the main front arm via a seventh rotation point, the collapsible front arm being rotatably connected, via the third rotation point to the foot part, said third point being in a
  • a kerb climbing device of this type relate to the final phase of the movement from climbing position to end position, in which phase, at a given instant, the auxiliary front arm moves into the fully retracted position, and then, in the event of a further movement, the collapsible front arm pivots open, with the result that the front arm as a whole in fact becomes longer.
  • This lengthening of the front arm results in the foot part only moving a small amount upward in the final phase of the climbing movement, or even not being moved any further upward at all. This is important since it becomes difficult or impossible to release the kerb climbing device from the obstacle if the foot part is in a relatively high position with respect to the wheel.
  • a height difference of 5 cm between the foot part and the contact point between the wheel and the ground is enough to cause problems of this nature.
  • This difference in height plays an important role in particular if, in the climbing position, the configuration of the main front arm and the rear arm is such that, when seen in side view, they are virtually parallel. This degree of parallelism may be necessary if the MRC of the kerb climbing device has to be at a relatively high position, for example in the case of a rollator. It should be noted that before the fully retracted position of the auxiliary front arm is reached, the MRC is determined by the directions of the main front arm and the rear arm with respect to one another.
  • the kerb climbing device having an auxiliary front arm and a front arm composed of a main front arm and a collapsible front arm, the third axle and sixth axle are combined to form a single axle.
  • the kerb climbing device according to the invention comprises an auxiliary piece for coupling the connecting member to the carriage.
  • an auxiliary piece offers the option of still effecting a connection between the frame of the carriage and the kerb climbing device without having to alter the dimensions of the kerb climbing device.
  • the auxiliary piece is a transverse rod which is coupled to the carriage at the location of the suspension part for the two front wheels.
  • the kerb climbing device advantageously comprises parallel front arms, the top end of which is rotatably connected to the suspension part via the first axle, and the bottom end of which is rotatably connected to the foot part via the third axle, and/or parallel rear arms, the top end of which is rotatably connected to the suspension part via the second axle and the bottom end of which is rotatably connected to the foot part via the fourth axle.
  • Designing the front arm and rear arm in duplicate in this way makes the structure as a whole more resistant to forces which act transversely with respect to the direction of movement of the foot part.
  • a second aspect of the invention relates to the use of the kerb climbing device according to the invention, in which the latter is releasably connected to the carriage.
  • a third aspect of the invention relates to a walking aid which comprises a frame and, connected to it, wheels and grip means for the user, which is provided with a kerb climbing device according to the invention.
  • a walking aid such as in particular a rollator, which is provided with a kerb climbing device according to the invention provides the advantages which have already been indicated above.
  • the kerb climbing device can be secured to the walking aid in any suitable way, for example via the abovementioned connecting member.
  • the walking aid comprises a frame and, connected to it, wheels and grip means for the user, which walking aid is provided with a kerb climbing device according to the invention, wherein, when the kerb climbing device is in the climbing position, the extension of the connecting line between the first rotation point and the third rotation point, on the one hand, and the extension of the connecting line between the second rotation point and the fourth rotation point, on the other hand, intersect one another at an intersection point which is in the vicinity of the grip means of the walking aid.
  • a walking aid of this type has the advantage that the proximity of the intersection point and grip means in practice lowers the force which is required to negotiate a height obstacle.
  • the linkage and the axles of the kerb climbing device are advantageously made from rigid materials, such as strong plastics or metals. More advantageously, these rigid materials are lightweight.
  • the suspension part, the arms and the foot part are designed, for example, as elongate plates or tubes.
  • the length of the front arm and rear arm may vary within the conditions imposed on the kerb climbing device. These lengths are selected as a function of the mounting height on a walking aid. In this context, it is preferable for it to be possible to climb height obstacles starting from 2 cm.
  • a fourth aspect of the invention relates to a carriage comprising a frame, at least one wheel which is connected to the frame, and grip means for the user, which carriage is movable by manpower and is provided with a kerb climbing device for passing height obstacles, the kerb climbing device comprising a displacement mechanism in the form of a linkage which comprises a suspension part, a foot part and rotatable connecting arms, which connecting arms are provided between the foot part and the suspension part for displacing the foot part with respect to the suspension part between a climbing position and an end position, and the displacement mechanism being provided with adjustment means for adjusting the foot part in the climbing position, wherein the connecting arms comprise a front arm and a rear arm, a top end of the front arm being rotatably connected to the suspension part via a first rotation
  • a carriage of this type has the abovementioned advantages of an improved climbing action, on account of the quadrilateral shape of the linkage.
  • the suspension part should form part of the connecting part of the frame which pivots with the wheel.
  • the extension of the connecting line between the first rotation point and the third rotation point, on the one hand, and the extension of the connecting line between the second rotation point and the fourth rotation point, on the other hand preferably intersect one another at an intersection point which lies above and behind the first rotation point.
  • FIG. 1 shows a diagrammatic side view of a kerb climbing device in accordance with a preferred embodiment of the invention
  • Fig. 2 shows a three-dimensional reproduction of a walking aid provided with a kerb climbing device in accordance with a preferred embodiment of the invention
  • Fig. 3 shows a side view of a walking aid provided with a kerb climbing device in accordance with a preferred embodiment of the invention, with the kerb climbing device in contact with a height obstacle in the climbing position
  • Fig. 4 shows a simplified side view of the climbing position of a kerb climbing device in accordance with a preferred embodiment of the invention
  • Fig. 5 shows a simplified side view of the end position of the kerb climbing device in accordance with a preferred embodiment of the invention
  • FIG. 6 shows a side view of the climbing position of a kerb climbing device which comprises an auxiliary front arm in accordance with a preferred embodiment of the invention
  • Fig. 7 shows a perspective view of the end position of a kerb climbing device which comprises an auxiliary front arm in accordance with a preferred embodiment of the invention
  • Fig. 8 shows a representation of a detail of a carriage in accordance with a preferred embodiment of the invention, in which the suspension part of the kerb climbing device is an integral part of the frame of the abovementioned carriage.
  • Fig. 1 diagrammatically depicts a kerb climbing device 1, in which the displacement mechanism 2 is in the form of a linkage 3 which forms a quadrilateral.
  • the linkage 3 comprises a suspension part 5 made from aluminium, a foot part 9 made from aluminium which is provided with a rubber contact surface 11 with a concave underside 12, a front arm 13 and a rear arm 15, the arms 13 and 15 being designed as aluminium plates.
  • the top end of the front arm 13 and the top end of the rear arm 15 are rotatably connected to the suspension part 5 via a first axle 20 and a second axle 22, respectively.
  • the first and second axles 20 and 22 are located at the two longitudinal ends of the suspension part 5.
  • the foot part 9 is rotatably connected to the bottom end of the front arm 13 via the third axle 24 and to the bottom end of the rear arm 15 via the second axle 26.
  • the third and fourth axles 24 and 26 lie at the two longitudinal ends of the foot part 9.
  • the distance dl between the first and second axles 20 and 22 is shorter than the distance d2 between the third and fourth axles 24 and 26.
  • a torsion spring 30 At the second axle 22 there is a torsion spring 30, the ends of which engage on the one hand on the rear arm 13 and on the other hand on the suspension part 5. Consequently, the torsion spring 30 holds the kerb climbing device 1 in a climbing position, a stop block 34 being provided at the underside of the suspension part in order to limit the maximum travel of the rear arm 13 under stress from the torsion spring 30.
  • a connecting member 36 which comprises a clamping structure for securing to the frame of a walking aid, which can be tightened using pins 38.
  • Fig. 2 shows a subsequent embodiment of a kerb climbing device 1 according to the invention, which has been secured to a front transverse tube of the frame 40 of a rollator 42, with the kerb climbing device 1 positioned between the front wheels 44.
  • the corresponding components of the kerb climbing device which are shown in Fig. 1 are provided with identical reference numerals.
  • the kerb climbing device may comprise an auxiliary piece in the form of a transverse tube of this type, which can be secured between the upright tubes of the frame.
  • the kerb climbing device 1 is secured to the frame 40 via the clamping structure 36 and that the kerb climbing device 1 is designed with a double front arm 13 and a double rear arm 15.
  • the walking aid 42 is provided with grip means in the form of handles 46.
  • Fig. 3 shows a side view of the combination of a kerb climbing device 1 with a rollator 42 in accordance with Fig. 2.
  • the kerb climbing device 1 is in a climbing position, and the foot part 9 is in contact with the height obstacle 50 that is to be passed over.
  • the dashed auxiliary lines 52 and 54 represent extensions of the connecting lines 28 between the first and third axles 20 and 24, on the one hand, and between the second and fourth axles (not indicated) on the other hand. It will be clear that the intersection point 56 is located behind and above the first axle 20. Consequently, the intersection point 56 is located closer to the grip means 46 of the rollator 42 than if the intersection point were to lie below the first axle 20 or in front of the first axle 20.
  • the arrow F denotes the normal force which is exerted on the foot part 9 by the obstacle 50. Fig.
  • FIG. 4 shows a simplified illustration of a detail of the climbing position of the kerb climbing device 1 when it is used for a rollator.
  • a front wheel 44 of the rollator is indicated by dashed lines, as is a part of the frame 40 which is connected to the kerb climbing device 1 via the connecting member 36.
  • the foot part has a fixed point of contact 60 on the height obstacle 50 in the climbing position. It can be seen from the figure that a force FI pushing forwards will cause the linkage to move forwards in a counterclockwise direction, in a similar manner to a caterpillar track. Consequently, the forces in the front arm will be directed primarily towards the threshold which is to be surmounted, and the forces in the rear arm will be directed away from the threshold.
  • FIG. 5 shows a simplified illustration of a detail of the end position. of the kerb climbing device 1 after it has passed over the height obstacle proceeding from Fig. 4. The wheel 44 has reached the height obstacle 50, and from this moment on the foot part 9 is released again from the obstacle 50. Then, once the foot part is released from the obstacle 50, the linkage 3 will be moved back into a climbing position under the influence of the torsion spring (not shown) .
  • Fig. 5 shows a simplified illustration of a detail of the end position. of the kerb climbing device 1 after it has passed over the height obstacle proceeding from Fig. 4.
  • the wheel 44 has reached the height obstacle 50, and from this moment on the foot part 9 is released again from the obstacle 50. Then, once the foot part is released from the obstacle 50, the linkage 3 will be moved back into a climbing position under the influence of the torsion spring (not shown) .
  • auxiliary front arm 60 shows a side view of the climbing position of a kerb climbing device 1 which comprises an auxiliary front arm 60 in accordance with a preferred embodiment of the invention.
  • the auxiliary front arm 60 comprises an inner part 62 and an outer part 64, which are telescopically displaceable with respect to one another, the outer part 64 determining the length of the auxiliary front arm 60 in the fully retracted position.
  • the inner part 62 is rotatably connected to the suspension part via a fifth axle 66 at a position behind the connecting member 36.
  • the outer part 64 is rotatably connected to the foot part 9 via a sixth axle 68.
  • the front arm 13 is composed of a main front arm 70 and a collapsible front arm 72, the collapsible front arm 72 resting on the foot part 9 in the climbing position.
  • the collapsible front arm is rotatably connected to the foot part 9 via a third axle 24, which in this embodiment is the same as the sixth axle 68.
  • the construction is designed in such a manner that the collapsible front arm 72 can rotate about the same sixth axle 68 independently of the outer part 64 of the auxiliary front arm 60.
  • the latter is connected to the main front arm 70 via a seventh axle 74.
  • FIG. 7 shows a perspective view of the end position of a kerb climbing device, the climbing position of which is illustrated in Fig. 6.
  • the main front arm 70 is provided with a slot 80 inside which the auxiliary front arm 60 moves.
  • the auxiliary front arm 60 is fully retracted, with the result that it is now the outer part 64 which determines the length of the auxiliary front arm.
  • the main front arm 70 has moved towards the rear to such an extent that the collapsible arm 72 is partially free of the foot part 9, in which position, therefore, the front arm 13 as a whole is lengthened since the distance between the sixth axle 68 and the first axle 20 increases.
  • Fig. 8 shows a perspective illustration of a detail of a rollator 42 in accordance with a preferred embodiment of the invention, in which the suspension part 5 of the kerb climbing device 1 is an integral part of the frame of the abovementioned carriage 42.
  • a part of the pivotable front wheel suspension 90 is used on both sides of the front wheel 44 as suspension part 5 for the kerb climbing device 1.
  • a front arm 13 and a rear arm 15 are rotatably connected to the suspension part 5 on both sides of the wheel 44 via axles, and the foot part 9 is designed in a U shape, so that the construction which surrounds the wheel 44 can move without impeding the wheel 44.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Rehabilitation Tools (AREA)
  • Handcart (AREA)

Abstract

Un dispositif permettant de monter sur un trottoir (1), se prêtant au passage d'obstacles en hauteur (50) au moyen d'un chariot mobile (42), comprenant un mécanisme de dépassement sous forme d'une liaison quadrilatérale comprenant une partie de suspension, une partie pied (9) et des bras de connexion rotatifs, les bras se trouvant entre la partie pied (9) et la partie de suspension permettant le déplacement de la partie pied (9) par rapport à la partie de suspension entre une position de montée et une position d'extrémité. Le mécanisme de déplacement est doté de moyens de réglage permettant de régler la partie pied (9) dans la position de montée.
PCT/NL2005/000348 2004-05-12 2005-05-09 Dispositif permettant de monter sur un trottoir, son utilisation et son module d'assistance a la marche dote d'un dispositif permettant de monter sur un trottoir WO2005107678A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1026176A NL1026176C2 (nl) 2004-05-12 2004-05-12 Stoepoploper, toepassing daarvan en loophulpmiddel voorzien van een stoepoploper.
NL1026176 2004-05-12

Publications (2)

Publication Number Publication Date
WO2005107678A2 true WO2005107678A2 (fr) 2005-11-17
WO2005107678A3 WO2005107678A3 (fr) 2007-01-04

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PCT/NL2005/000348 WO2005107678A2 (fr) 2004-05-12 2005-05-09 Dispositif permettant de monter sur un trottoir, son utilisation et son module d'assistance a la marche dote d'un dispositif permettant de monter sur un trottoir

Country Status (2)

Country Link
NL (1) NL1026176C2 (fr)
WO (1) WO2005107678A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2116218A1 (fr) * 2008-05-09 2009-11-11 CHK Develop B.V. Orthèse pour la hanche adaptée au montage d'un obstacle en hauteur
DE202009009850U1 (de) 2009-07-15 2009-11-26 Dickau, Fabian Bordsteinüberwindungshilfeeinrichtung für Rollatoren
EP2216006A1 (fr) 2009-02-05 2010-08-11 Hans-Peter Wulff Déambulateur ou fauteuil roulant pour personnes handicapées
EP2216005A1 (fr) 2009-02-05 2010-08-11 Hans-Peter Wulff Déambulateur ou fauteuil roulant pour personnes handicapées
DE102017100007A1 (de) 2016-11-13 2018-05-17 Markus Gronen Kipphilfe für Rollatoren
JP2018203092A (ja) * 2017-06-06 2018-12-27 Ｃｏｒｅｓｃｏｐｅ株式会社 手押し車および手押し車に用いる前輪持ち上げユニット
JP2020055462A (ja) * 2018-10-03 2020-04-09 株式会社島製作所 手押し車

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602007007933D1 (de) 2007-08-02 2010-09-02 Hema Bv Gehhilfe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132423A (en) * 1976-12-09 1979-01-02 Vessa Limited Attachments enabling vehicles to negotiate obstacles
GB2188597A (en) * 1986-02-28 1987-10-07 Jeremy Joseph Fry A wheelchair having a kerb-climbing device
GB2237250A (en) * 1989-10-06 1991-05-01 Booster Electric Vehicles Limi A kerb climbing device which minimises vertical acceleration
WO2002071998A1 (fr) * 2001-03-09 2002-09-19 Margana Ag Dispositif facilitant la conduite d'un deambulateur roulant et deambulateur roulant dote de ce dispositif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132423A (en) * 1976-12-09 1979-01-02 Vessa Limited Attachments enabling vehicles to negotiate obstacles
GB2188597A (en) * 1986-02-28 1987-10-07 Jeremy Joseph Fry A wheelchair having a kerb-climbing device
GB2237250A (en) * 1989-10-06 1991-05-01 Booster Electric Vehicles Limi A kerb climbing device which minimises vertical acceleration
WO2002071998A1 (fr) * 2001-03-09 2002-09-19 Margana Ag Dispositif facilitant la conduite d'un deambulateur roulant et deambulateur roulant dote de ce dispositif

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2116218A1 (fr) * 2008-05-09 2009-11-11 CHK Develop B.V. Orthèse pour la hanche adaptée au montage d'un obstacle en hauteur
EP2216006A1 (fr) 2009-02-05 2010-08-11 Hans-Peter Wulff Déambulateur ou fauteuil roulant pour personnes handicapées
EP2216005A1 (fr) 2009-02-05 2010-08-11 Hans-Peter Wulff Déambulateur ou fauteuil roulant pour personnes handicapées
DE202009009850U1 (de) 2009-07-15 2009-11-26 Dickau, Fabian Bordsteinüberwindungshilfeeinrichtung für Rollatoren
DE102017100007A1 (de) 2016-11-13 2018-05-17 Markus Gronen Kipphilfe für Rollatoren
WO2018086659A1 (fr) 2016-11-13 2018-05-17 Markus Gronen Aide au basculement pour déambulateurs à roulettes
JP2018203092A (ja) * 2017-06-06 2018-12-27 Ｃｏｒｅｓｃｏｐｅ株式会社 手押し車および手押し車に用いる前輪持ち上げユニット
JP2020055462A (ja) * 2018-10-03 2020-04-09 株式会社島製作所 手押し車

Also Published As

Publication number Publication date
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NL1026176C2 (nl) 2005-11-15

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