EP3384103B1 - Vorrichtung zur unterstützung des fahrens eines fahrzeugs über ein hindernis - Google Patents

Vorrichtung zur unterstützung des fahrens eines fahrzeugs über ein hindernis Download PDF

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Publication number
EP3384103B1
EP3384103B1 EP16813095.3A EP16813095A EP3384103B1 EP 3384103 B1 EP3384103 B1 EP 3384103B1 EP 16813095 A EP16813095 A EP 16813095A EP 3384103 B1 EP3384103 B1 EP 3384103B1
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EP
European Patent Office
Prior art keywords
plate
arm
carriage
frame
flap
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Application number
EP16813095.3A
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English (en)
French (fr)
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EP3384103A1 (de
Inventor
Pierre BELMAN
Frédéric ENGLER
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MYD L SAS
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MYD L SAS
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Publication of EP3384103A1 publication Critical patent/EP3384103A1/de
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/002—Ramps

Definitions

  • the present invention relates to a device for assisting a vehicle to cross one or more steps or a threshold, in particular for people with reduced mobility traveling using a wheelchair or for people moving a wheeled cart intended for the transport of objects.
  • the document GB 2491706 A describes a device of this type according to the preamble of claim 1.
  • Such a threshold has a height generally ranging from one to several tens of centimeters and constitutes an often insurmountable obstacle for a person with reduced mobility or delivery carts.
  • a major constraint concerning the installation of such a ramp is a lack of permanent encroachment on the public road, sidewalk and / or roadway, passage corridor, etc.
  • the deployable and retractable ramps offer an appreciable service but suffer from complex mechanics. Such ramps require a significant free deployment distance restricting the possibilities of implementation. Sidewalk irregularities stress their structure.
  • FR 2947224 describes a tilting telescopic ramp.
  • a device for assisting in the crossing of an obstacle by a wheeled vehicle in particular for a person with reduced mobility, comprises a stationary frame comprising a bottom and two parallel side walls, a plate provided with two ends, a first end being movable between a high position and a low position in which said plate constitutes a first access ramp, a drive assembly in vertical translation at least of said first end supported by said assembly, a flap forming the front face of the device in the high position of the plate and forming a second access ramp in the low position of the plate, the flap being pivotally mounted on the plate at the first end of said plate, and a mechanism for deploying the flap, comprising at least one connecting rod comprising a front end hinged to the flap , the joint being distant from the top edge and from the bottom edge of said flap, a rear end linked to a first slide mounted to slide in a linear slide formed in the plate, and a central portion linked to a second slide mounted to slide in a slide formed in one side of the frame, the connecting rod moving in a
  • non-erectile height change ramp assistance device with a flap providing a shutter function in the high position and an additional ramp in the low position and indexed on the plate.
  • the flap increases the passable height. The flap prevents the intrusion of foreign bodies under the tray.
  • the slides are pawns.
  • the pins are mounted on the connecting rod.
  • the mechanism is compact.
  • the linear slide is substantially horizontal in the high position of the plate.
  • the assembly of the slide is simple.
  • the slide of the frame is in an arc of a circle with a substantially vertical lower end, preferably with a radius of between 30 and 280 mm.
  • the movement of the flap ensures a forward clearance at the start of descent from the platform and a support on the ground of the free end of the flap at the end of descent.
  • the slide of the frame has an upper end inclined at an angle between 50 and 75 ° relative to the vertical. The movement of the flap ensures rapid release forward at the start of the descent of the platform.
  • the axis of articulation of the flap is disposed at a height between 40 and 60% of the distance between the top edge and the bottom edge of said flap. In in the case of mounting above, the torque exerted decreases significantly. In the case of lower mounting, the joint may rub against the ground.
  • the connecting rod being inclined at an angle between 10 and 35 ° relative to the horizontal in the high position of the plate and the connecting rod being substantially horizontal in the low position of the plate.
  • the stroke of the connecting rod is less than the stroke of the free end of the flap.
  • the connecting rod is made from a blank of cut sheet metal.
  • the connecting rod is of economical manufacture.
  • the connecting rod is a straight arm.
  • the connecting rod is hardly subject to bending.
  • the linear slide formed in the tray comprises an elongated dish in which is formed a rectilinear opening housing the slide. The slide resumes efforts while avoiding buckling efforts.
  • said plate is formed by folding an edge of the plate.
  • two symmetrical connecting rods are provided, one connecting rod on each side of the frame. The risk of the shutter buckling is reduced.
  • the drive assembly comprises a linear actuator mounted under the plate, provided with a stationary end close to said second end and integral with the bottom, and with a movable end, a carriage movable in horizontal translation and driven by said actuator, said carriage resting on slides mounted on the bottom of the frame, said carriage comprising two pushers, and a pair of arms, the arms being symmetrical, each arm being supported on one of the pushers of the carriage, each arm supporting the first end of the tray; in the retracted position of the actuator, the carriage being close to said second end, the arms being in the low position and the first end being in the ramp position, and in the extended position of the actuator, the carriage being close to said first end , the arms being in the high position and the first end being in the erected position.
  • the arms are pivotally mounted alongside the frame on a substantially horizontal common axis. Swivel operation is reliable. Manufacturing costs are contained.
  • each arm is housed in one side of the frame.
  • each arm comprises a body produced from a blank of cut sheet metal.
  • the arm is simple and space-saving.
  • the finger supporting the first end of the plate is provided with a bearing.
  • the finger in contact with the pusher is provided with a bearing.
  • the finger comprises a base and a pin passing through a bore in the body of the arm, the base being welded to said body.
  • the fingers of an arm are connected by their ends opposite to said body.
  • the rigidity of the arm is improved.
  • each arm comprises a finger receiving the thrust from the pusher of the carriage and a finger supporting the first end of the plate.
  • each arm is mounted between a side wall of the frame and a cover parallel to said side wall.
  • At least one opening in an arc is formed in said cover, the fingers projecting from said opening.
  • the pivot axis of the arm is supported bilaterally.
  • each arm has a triangular shape, a vertex being located at the pivot axis.
  • the arm can be manufactured by cutting sheet metal with complementary shapes reducing the loss of material.
  • the triangle is isosceles.
  • the angle formed between a straight line passing through the pivot axis of an arm and the pusher of the carriage, and a straight line passing through the pivot axis of an arm and the arm contact point -plate being between 50 and 70 °.
  • the straight line passing through the pivot axis of an arm and the pusher of the carriage has an angular travel, during the pivoting, between 50 and 70 °.
  • the straight line passing through the pivot axis of an arm and the pusher of the carriage is inclined relative to the vertical, during the pivoting, by an angle between -30 and + 30 ° .
  • the horizontal displacement of the jack is transformed into a displacement with a vertical component for the plate with maximum force in the low position.
  • the carriage comprises a chassis made of folded sheet metal.
  • the cart is reliable and robust.
  • the chassis comprises a base substantially parallel to the bottom of the stationary frame, a rear edge provided with an opening allowing the jack to pass, a front edge comprising two zones forming the pushers.
  • the pushers are kept compact. The overall height is small.
  • the front edge is substantially vertical.
  • the amplification ratio of the arms is between 100 and 110%, preferably greater than 100 and less than 105%.
  • the construction is compact. The cylinder stroke is limited.
  • each arm is mounted on one side of the frame on an axis fixed to said frame.
  • the binding is robust.
  • the link arms are mounted articulated on the carriage and on the plate.
  • the plate comprises a second end pivotally mounted at the rear of the frame around a horizontal axis.
  • the table can be tilted to form an easily traversable access slope.
  • the frame comprises two pivot axis segments supporting the second end of the plate and two pairs of vertical plates, each pair of plates supporting a pivot axis segment, the plate of a pair being distant of the other plate of said pair, the plates extending to the bottom of the frame so that the compression forces are transferred to said bottom.
  • the linear cylinder is electric.
  • the carriage has a generally rectangular shape of length greater than its width, the length of the carriage being perpendicular to the sides of the frame.
  • the carriage rests on four guide rails.
  • the guide rails rest on the bottom of the frame.
  • the trolley can be fitted with skids or wheels bearing on the slides.
  • the carriage comprises a front edge provided with cutouts forming a housing for a chassis of the tray in the low position.
  • the frame comprises a mechanical stop limiting the stroke of the carriage, the arrival in stop causing a current draw from the electric jack capable of being detected by a pilot of the jack.
  • the carriage and the movable end of the jack are connected in the vicinity of the edge of the carriage remote from the stationary end of the jack. The stability of the carriage in movement is satisfactory.
  • the chassis of the carriage is made of sheet steel with a thickness of between 1 and 4 mm.
  • the plate comprises a chassis made of sheet steel with a thickness of between 1 and 4 mm.
  • the frame is made of sheet steel with a thickness between 1 and 4 mm.
  • the arms are made of sheet steel with a thickness of between 1 and 4 mm.
  • the flap is made of sheet steel with a thickness of between 1 and 4 mm.
  • chassis of the carriage, the frame, the flap, the cover and the arms are made of sheet steel of the same thickness between 2 and 3.5 mm, for example 3 mm.
  • the tray includes a frame and an upper plate.
  • the top plate can be used for rolling or supporting a coating.
  • the frame of the tray comprises a lower surface bearing on the arms.
  • the axis comprises a pin passing through a hole made in the body of the arm, and a base with a diameter greater than the diameter of the hole.
  • the base can be welded to one side of the frame.
  • the pin protrudes relative to the arm and comes in a bore formed in a cover parallel to said side wall of the frame.
  • the frame comprises at least one sheet disposed between said side wall and the cover.
  • the sheet stiffens said side.
  • the sheet may be provided with holes equivalent to the holes in the cover and form an additional thickness providing mounting clearance.
  • the invention aims to allow the crossing of an elevation resulting in a step.
  • the two levels will be distinguished by the expressions upper soil and lower soil.
  • the entrance to a room, a shop, an office often has a height difference from the outside, whether it is a street open to traffic, a passage pedestrian, square, etc. People in wheelchairs must be able to access this type of building. Delivery people with rolling trays or carts have the same need.
  • For crossing a height of one or two steps, heavy lift-type installations are not suitable. It is also important to respect the appearance of the façades, often subject to protection regulations, and their alignment.
  • the structure of the building must be preserved as much as possible, in particular the supporting structure of the upper ground of the ground floor in which the entry must be made easy.
  • a notable constraint stems from the frequent unavailability of the basement, used for other purposes or owned by third parties.
  • the height available space is limited.
  • the assistance device 1 aims to ensure the establishment of a ramp having a slope of less than 20%, or even less than 15, 10 or 5% depending on regulatory or environmental constraints.
  • the assistance device 1 is intended to be inserted or embedded in the upper floor, in front of the lower floor at the level of the access to be crossed.
  • the assistance device 1 comprises a frame 2 forming a box 7 inside which is housed the ramp.
  • the ramp may have an elevating end, the ramp then being tiltable as illustrated in the drawings.
  • the frame 2 has a generally substantially rectangular shape with dimensions adapted to the height of the step, the width of the access and the dimensions of the vehicle envisaged.
  • the box can have a height of the order of 5 to 30 centimeters allowing insertion into most floors and floors, such as a concrete, brick, or other slab.
  • the assistance device 1 comprises a plate 3 mounted in the frame 2.
  • the upper plate constitutes a cover panel.
  • the frame 2 is installed so that the upper plate forms a surface flush with the upper floor of the room.
  • the plate 3 can be made so as to be harmonized with the rest of the upper floor, for example while respecting the geometry, the covering, the decor, etc.
  • the assistance device 1 comprises a front flap 4 forming a front surface of the step.
  • the front flap 4 is generally vertical in the high or rest position of the assistance device 1.
  • the front flap 4 is inclined in the active or low position of the assistance device 1.
  • the front face 4 of the device 1 can also have an appearance chosen for integration into the building facade.
  • the frame 2 is stationary in the sense that it forms an immobile structure of the assistance device 1 relative to its installation environment such as the ground or the sidewalk.
  • the frame 2 includes a bottom 8, parallel side walls 9, 10 forming the sides, a rear wall 11 and support elements for the plate 3.
  • the term " rear " is used here, as opposed to the front of the device assistance 1 intended to come in the vicinity of a lower floor, for example in front of the building.
  • the term “ rear” can also be seen as synonymous with " interior " in the case of a building.
  • the rear wall 11 can be perpendicular to the bottom 8.
  • the rear wall 11 is perpendicular to the side walls 9, 10.
  • the side walls 9, 10 are perpendicular to the bottom 8.
  • the box 7 can be made of sheet steel.
  • the front ends of the bottom 8 and the side walls 9, 10 define a mouth of the box 7. During deployment, the flap 4 leaves the box 7 through the mouth. The mouth is closed by the flap 4 in the rest position.
  • the bottom 8 is mounted in a housing provided for this purpose in the upper floor of the room, slightly inclined towards the outside, for example around 1 to 3 °. A slight inclination facilitates evacuation by gravity in the event of accidental infiltration of liquid into the box 7. In addition, the depth of the housing to be dug to accommodate the assistance device 1 is reduced at the rear.
  • the assistance device 1 is in the low position.
  • the rear end or second end of the plate 3 remains substantially at the same height as the top of the rear wall 11.
  • the front end or first end of the plate 3 is lowered.
  • the front end of the plate 3 rests on the bottom 8.
  • the front flap 4 is in the erected position.
  • the front flap 4 projects from the frame 2.
  • the front flap 4 has a lower end projecting forward and an upper end close to the front end of the plate 3.
  • the side walls 9, 10 and the rear wall 11 comprise a substantially horizontal upper edge 12.
  • Said upper edge 12 is continuous.
  • Said upper edge 12 is obtained by folding.
  • a weld may be provided in the corners.
  • the assistance device 1 comprises a pair of covers 13, 14 arranged parallel to the side walls 9, 10.
  • the distance between the cover 13, 14 and the corresponding side wall 9, 10 is of the order of 6 to 12 mm.
  • the distance between the cover 13, 14 and the corresponding side wall 9, 10 can be determined by washers or preferably by sheet metal spacers of a shape similar to the shape of the covers 13, 14.
  • the spacers reinforce the cover and the side wall . Openings are provided in the spacers to accommodate the parts arranged between the cover 13, 14 and the side wall 9, 10, in particular the arms below.
  • the cover 13, 14 is fixed to the corresponding side wall 9, 10, for example by screws not shown.
  • the covers 13 and 14 also form the sides.
  • the covers 13 and 14 are arranged in the box 7.
  • the covers 13 and 14 are arranged flush with the front end of the side walls 9, 10.
  • the covers 13 and 14 extend between the bottom 8 and the upper edge 12 Hoods 13 and 14 rest on the bottom 8.
  • the covers 13 and 14 extend from the front end of the box 7 towards the rear over a distance less than 50% of the distance between the mouth and the rear wall 11.
  • the covers 13 and 14 have a rectangular envelope.
  • Each cover 13, 14 is flat.
  • Each cover 13, 14 is produced from cut sheet metal.
  • Each cover 13, 14 is provided with a notch 15 on a front edge. The notch 15 allows the articulation of the flap 4 to enter the box in the high position of the plate 3.
  • Each cover 13, 14 is provided with a bore 16 adjacent to a rear edge of the cover.
  • the hole 16 is close to the upper edge 13.
  • the hole 16 is used to house a pin 17 forming an axis of articulation.
  • the pin 17 comprises an enlarged base 18.
  • the base 18 is fixed to the corresponding side wall 9, 10, for example by welding, on the outside of the side wall 9, 10.
  • the pin 17 comprises a cylindrical body of revolution, cf. figure 10 .
  • the body projects into the bore 16.
  • the body can be supported on the cover 13, 14.
  • Each cover 13, 14 is provided with an opening 19 in an arc.
  • the opening 19 is concavity oriented upwards.
  • the opening 19 is distant from the front and rear ends of the cover 13, 14.
  • the opening 19 is distant from the upper and lower ends of the cover 13, 14.
  • the opening 19 extends over approximately 120 ° of angle.
  • the opening 19 is centered on the bore 16.
  • the opening 19 has a substantially vertical front end.
  • the opening 19 has a front end close to the upper edge 13.
  • the opening 19 has a rear end, obscured by the plate 3 on the figure 1 , near the bottom 8 and the rear end of the cover 13, 14.
  • the lower zone of the opening 19 is situated vertically of the bore 16.
  • Each cover 13, 14 is provided with an opening 20 in an arc forming a slide.
  • the opening 20 is concavity oriented downwards.
  • the opening 20 is distant from the front and rear ends of the cover 13, 14.
  • the opening 20 is distant from the upper and lower ends of the cover 13, 14.
  • the opening 20 extends over approximately 60 ° of angle.
  • the opening 20 is centered on a geometric point located in the cover 13, 14.
  • the opening 20 has a substantially vertical front end.
  • the opening 20 has a front end close to the bottom 8 and the front end of the cover 13, 14.
  • the opening 20 has a rear end close to the upper edge 13 and the front end of the opening 19.
  • the lower zone of the opening 19 is situated vertically of the notch 15.
  • the assistance device 1 is in the high position.
  • the rear end of the plate 3 remains substantially at the same height as the top of the rear wall 11.
  • the plate 3 is substantially horizontal.
  • the front flap 4 is substantially vertical.
  • the front flap 4 is in the retracted position.
  • the front flap 4 is flush with the mouth of the frame 2.
  • the lower end of the front flap 4 is in contact or in the immediate vicinity of the front end of the bottom 8.
  • the front flap 4 includes short sides in contact or in the immediate vicinity from the front end of the side walls 9, 10.
  • the upper end of the front flap 4 is close to the front end of the plate 3.
  • the upper end of the front flap 4 is articulated at the front end of the plate 3.
  • the plate 3 may include a frame and an upper plate.
  • the plate 3 is articulated around a horizontal axis close to the rear wall 11 and located under the plate 3.
  • the plate 3 comprises a substantially rectangular main surface with parallel elongated notches allowing the covers 13 and 14 to pass.
  • the plate 3 comprises a rim 21 directed upwards.
  • the rim 21 is peripheral to the main surface.
  • the rim 21 has a constant of a few centimeters, for example 1 to 4 cm, allowing the plate 3 to receive a covering, for example stone slabs, parquet, laminate, flexible synthetic covering, etc.
  • the plate 3 can be made of sheet steel with a thickness of between 1 and 4 mm, preferably between 2 and 3.5 mm.
  • the figure 3 shows the assistance device 1 in the absence of a tray.
  • the assistance device 1 is in the high position.
  • the assistance device 1 comprises a drive assembly 6 visible here.
  • the drive assembly 6 may comprise a jack 61, a movable carriage 62 and a pair of arms 63.
  • the jack 61 drives the movable carriage 62.
  • the movable carriage 62 drives the arms 63.
  • the jack 61 and the movable carriage 62 are arranged between the bottom 7 and the plate 3.
  • the jack 61 is linear.
  • the jack 61 is preferably electric. However, the variant with mechanical actuator actuated manually, for example by crank, is possible.
  • the jack 61 is parallel to the bottom 7.
  • the jack 61 is parallel to the side walls 9, 10.
  • the jack 61 comprises a stationary end directed towards the rear of the frame and a movable end directed towards the front of the frame, ie the mouth.
  • the stationary end of the jack 61 is fixed to the bottom 8.
  • the mobile end of the jack 61 is fixed to the carriage 62, for example in the vicinity of the front edge of the carriage 62, for example in the vicinity of the front edge of the carriage 62.
  • the jack 61 is controlled by a pilot, not shown. The pilot can be provided with a current detection.
  • the movable end of the jack 61 and the carriage 62 are movable in horizontal translation between a front position, cf. figures 3, 4 & 9 , and a rear position, cf Figures 5 to 8 .
  • the front position determines a high position of the plate 3.
  • the rear position determines a low position of the plate 3.
  • the carriage 62 rests on slides 81 mounted on the bottom 8.
  • the slides 81 are horizontal.
  • the slides 81 are parallel. There are four slides here. Embodiments with two or three slides are provided.
  • the slides 81 can be in the form of a metal profile with a smooth and hard upper sliding surface.
  • the carriage 62 is provided with two pads per slide. The pads arranged under the carriage 62 are not visible.
  • the pads can be made of synthetic material with a low coefficient of friction, for example based on PTFE.
  • the carriage 62 has a generally rectangular shape.
  • the length of the carriage 62 is oriented between the side walls 9, 10, parallel to the rear wall 11.
  • the width of the carriage 62 is oriented parallel to the side walls 9, 10. The length is greater than the width.
  • the carriage 62 comprises a frame made of cut and folded sheet metal.
  • the frame includes a rectangular bottom and longitudinal and lateral edges.
  • the chassis of the trolley is made of sheet steel with a thickness between 1 and 4 mm, preferably from 2 to 3.5 mm.
  • the longitudinal and lateral edges are substantially vertical.
  • the longitudinal and lateral edges are folded up.
  • the longitudinal and lateral edges extend over a height of 1 to 4 centimeters.
  • the rear longitudinal edge includes an opening through which the cylinder 61 passes.
  • the movable end of the jack 61 is fixed to the bottom of the frame 2 in the vicinity of the front longitudinal edge, ensuring the stability of the carriage. Depending on the diameter of the jack, the opening can also extend into the bottom to reduce the overall height.
  • the front longitudinal edge comprises a plurality of cutouts, here four, housing, in the lower position of the plate 3, profiles forming beams on the underside of the plate 3. A cutout is provided for each profile.
  • the front longitudinal edge comprises end regions adjacent to the lateral edges and capable of being supported on the lateral edges. The end regions form pushers 67 for the arms 63. The pushers 67 are, here, vertical.
  • the carriage 62 is symmetrical with respect to a plane parallel to the side walls 9, 10.
  • the frame 2 comprises at least one mechanical stop 82 limiting the stroke of the carriage, the arrival at the stop causing a current draw from the electric jack detected by the pilot of the jack 61.
  • four mechanical stops 82 are arranged on the bottom 8.
  • Each mechanical stop 82 is mounted at the end of a slide 81, some on the front side, others on the rear side.
  • the frame 2 comprises two pairs of vertical plates 22, 23.
  • Each plate 22, 23 is in the form of a flat rectangular piece, for example of sheet metal.
  • Each plate 22, 23 rests on the bottom 8 by a small side.
  • Each plate 22, 23 is in contact with the rear wall 11 by a long side or edge.
  • the plates 22, 23 can be welded to the bottom 8 and / or to the rear wall 11.
  • a horizontal axis bore is provided in an upper zone of each plate 22, 23.
  • the frame 2 comprises a pivot axis segment 24 for each pair of plates 22, 23. Each end of a pivot axis segment 24 projects into the hole in a plate.
  • Each pivot axis segment 24 can be held in the holes by circlips, retaining rings or washers with internal teeth.
  • Each pivot axis segment 24 is supported by a pair of plates.
  • the pivot axis segments 24 are adjacent to the upper end of the rear wall 11.
  • the pivot axis segments 24 are spaced apart to ensure good stability.
  • the plate 3 comes to rest on the pivot axis segments 24.
  • the plate 3 can be secured to the pivot axis segments 24 by flanges.
  • the plate 3 is pivotally mounted relative to the frame 2. The pivoting takes place over a limited angle, for example less than 15 °, so that the difference between the rear end of the plate 3 and the rear wall 11 remains negligible for example less than 3 mm.
  • the arms 63 are symmetrical.
  • the arms 63 are coaxial.
  • Each arm 63 is arranged between the side wall 9, 10 and the neighboring cover 13, 14.
  • the arm is housed in one side of the frame 2.
  • Each arm 63 is articulated on a pin 17 forming a tilting axis.
  • the pin 17 is supported by the side wall 9, 10 and the cover 13, 14.
  • the pin 17 is arranged in the upper region of the cover 13, 14.
  • the pin 17 is arranged in the rear region of the cover 13, 14.
  • Pawns 17 are coaxial.
  • the pins 17 are perpendicular to the side walls 9 and 10.
  • the pins 17 are horizontal.
  • Each arm 63 has a general triangular shape or a portion of a circle.
  • Each arm 63 comprises a plane body 63a.
  • the body 63a is produced from a blank of cut sheet metal. Avoid bending or stamping.
  • the body 63a can be between 1 and 4 mm thick.
  • the body 63a is articulated on the pin 17.
  • the pin 17 is arranged in the vicinity of an apex of the triangle, the base of the triangle being closer to the bottom 8. Said apex has an angle between 50 and 70 °.
  • Each arm 63 comprises a first finger 65 receiving the thrust from the pusher 67 of the carriage.
  • the first finger 65 comprises a base 65a and a pin 65b.
  • the pin 65b passes through a bore in the body of the arm 63.
  • the base 65a is welded to said body on the side opposite to the projection of the pin 65b.
  • the base 65a has the shape of a solid disc.
  • the base 65a has a thickness of between 1 and 3 mm.
  • the pin 65b has a cylindrical shape of revolution.
  • the pin 65b may include a bearing to reduce friction.
  • the pin 65b may have a diameter between 8 and 20 mm, preferably between 8 and 12 mm.
  • the first finger 65 is arranged in the vicinity of a second vertex of the triangle.
  • Each arm 63 comprises a second finger 66 supporting the plate 3 in the vicinity of its first end.
  • the second finger 66 receives the thrust from the plate 3 and causes the plate 3 to pivot.
  • the second finger 66 comprises a base 66a and a pin 66b.
  • the pin 66b passes through a bore in the body of the arm 63.
  • the base 66a is welded to said body on the side opposite to the projection of the pin 66b.
  • the base 66a has the shape of a solid disc.
  • the base 66a has a thickness of between 1 and 3 mm.
  • the pin 66b has a cylindrical shape of revolution.
  • the pin 66b may include a bearing to reduce friction.
  • the pin 66b may have a diameter between 8 and 20 mm, preferably between 12 and 16 mm.
  • the second finger 66 is arranged in the vicinity of a third vertex of the triangle.
  • the angle between a straight line passing through the pin 17 and the pusher 67 of the carriage, corresponding to the contact surface of the first finger 65, and a straight line passing through the pin 17 and the contact surface of the second finger 66 with the plate 3 is between 50 and 70 °, preferably between 55 and 65 °.
  • the ends of the pins 65b and 66b opposite the bases 65a and 66a are connected together by a spacer.
  • the thickness of the arms body can be reduced.
  • the first finger 65 and the second finger 66 are of parallel axes.
  • the first finger 65 and the second finger 66 pass through the opening 19.
  • the first finger 65 and the second finger 66 protrude into the space between the bottom 8 and the plate 3.
  • the first finger 65 and the second finger 66 are arranged at different distances from the pins 17.
  • An amplifier is thus formed.
  • the distance pawn 17 - first finger 65 is less than the distance pawn 17 - second finger 66.
  • the vertical stroke of the front end of the plate 3 is greater than the horizontal stroke of the jack, for example by 4%.
  • the opening 19 has a recess 31 substantially in the middle.
  • the opening 19 comprises a first portion for the travel of the first finger 65 and a second portion for the travel of the second finger 66.
  • the portions are contiguous forming a single opening.
  • the first and second portions can be separated, hence two openings, for example for a higher amplifying effect.
  • the first finger 65 is located at the rear end of the opening 19 and the second finger 66 is located at the rear end of the second portion in the vicinity of the recess 31.
  • the first finger 65 and the second finger 66 are substantially the same distance from the bottom 8.
  • the first finger 65 is located at the front end of the first portion of the opening 19 in the vicinity of the recess 31 and the second finger 66 is located at the front end of the opening 19 in the vicinity of the edge upper cover 13, 14.
  • the first finger 65 and the second finger 66 define a line inclined with respect to the horizontal of about 50 to 70 °.
  • the vertical stroke of the first finger 65 on the pushbutton 67 of the carriage is weak. Thus the pusher 67 of the carriage can have a small vertical dimension.
  • the straight line passing through the pin 17 and the point of contact between the second finger 66 and the plate 3 pivots by the same angle during the movement of the arm.
  • the horizontal stroke of the second finger 66 on the plate 3 is small, of the order of 50% of the radius between the pin 17 and the contact surface of the second finger 66 with the plate 3.
  • pivoting arms are replaced by sliding rods.
  • the flap 4 is articulated on the front end of the plate 3.
  • a hinge 46 of substantially horizontal axis is provided.
  • the hinge 46 is fixed on the one hand to the flap 4 near an upper edge of said flap 4, and on the other hand, to the plate 3.
  • the fixing 3 can be carried out at the flange 21.
  • the assistance device 1 comprises a mechanism 40 for deploying the flap 4.
  • the mechanism 40 indexes the position of the flap 4 to the position of the plate 3.
  • the mechanism 40 ensures the closing of the flap 4 in the high position of the plate 3 and the deployment of the flap 4 in the low position of the plate 3.
  • the term "mechanism” means a member without an electric actuator.
  • the mechanism 40 can optionally be provided with a sensor. In the mode shown, the mechanism 40 has no sensor.
  • the mechanism 40 ensures an amplified displacement at the start of descent of the platform 3.
  • a given vertical displacement of the front end of the platform 3 requires an at least equal vertical displacement of the lower edge of the flap 4 to avoid coming into contact with the soil too early.
  • the shutter 4 being articulated at its upper edge, the required angular pivoting is high, the vertical displacement according to a law H x (1-cos ⁇ ⁇ , with ⁇ the angle of the shutter relative to the vertical and H the height of the shutter
  • the mechanism 40 ensures a clearance at the end of the descent of the plate 3.
  • the mechanism 40 comprises a pair of symmetrical connecting rods 42, one connecting rod on each side of the frame 2.
  • Each connecting rod 42 is an elongated part.
  • Each connecting rod 42 can be formed by a sheet metal blank cut out and arranged in one or more thicknesses.
  • Each connecting rod 42 comprises a front end articulated to the flap 4, a rear end mounted to slide relative to the plate 3 and a central portion mounted to slide relative to the frame 2.
  • the front end of the connecting rod 42 is linked to a joint 43 distant from the top edge and from the bottom edge of said flap 4.
  • the articulation 43 is mounted substantially midway between the high edge and the bottom edge of said flap 4. More generally, the articulation 43 is mounted between 1/3 and 2/3 of the height of the flap 4.
  • the stroke of the connecting rod 42 is less than the stroke of the bottom edge of the flap 4.
  • the articulation 43 is disposed on the rear face of the flap 4, forming the lower face in the deployed position of the flap 4.
  • the notch 15 of the cover 13, 14 forms a housing for the articulation 43 in the high position of the plate 3.
  • the rear end of the rod 42 is linked to a first slide 44 slidably mounted in a linear slide 32 of the plate 3.
  • the rod 42 can move in rotation and in translation relative to the plate 3.
  • the translation stroke is limited by the length of the linear slide 32.
  • the linear slide 32 is substantially horizontal in the high position of the plate 3.
  • the linear slide 32 is parallel to the plate 3.
  • the linear slide 32 comprises an elongated flat in which a rectilinear opening 33 is formed.
  • the linear slide 32 can comprise a piece of sheet metal bent in a U at symmetry with respect to a central plane, each branch of the U being provided with a rectilinear opening 33.
  • the bottom of the U is fixed to the plate 3 on the underside, for example by welding. Each branch of the U is directed downwards.
  • Each branch of the U is parallel to the covers 13, 14.
  • a chamfer 34 is formed in each branch of the U to allow reaching the low position of the plate illustrated on the figure 7 .
  • the lower edge of the branches of the U is likely to come to rest on the bottom 8.
  • Each slot 35 is formed between a branch of the U and the bottom in the folding zone.
  • Each slot 35 is of length greater than the length of the rectilinear opening 33.
  • Each slot 35 extends in front and behind the rectilinear opening 33.
  • the slots 35 favor the folding of the branches of the U from a flat sheet metal blank by reducing the risk of deformation in the vicinity of the rectilinear openings 33.
  • said sheet is of the same thickness as the other main parts
  • the slide 44 is in the form of a pin.
  • the slide 44 comprises a base fixed to the connecting rod 42, a cylindrical body of revolution arranged in the rectilinear opening 33 and a head with a diameter greater than the diameter of the body disposed on the side of the body opposite the connecting rod 42.
  • the slide 44 can be symmetrical relative to the connecting rod and include two bodies and two heads to cooperate with the two rectilinear openings 33.
  • the body can be provided with a bearing so that the slide 44 rolls on the edges of the rectilinear openings 33
  • the rear end of the connecting rod 42 is thus pivotable relative to the plate 3.
  • the rear end of the connecting rod 42 is sliding in translation along the length of the rectilinear openings 33.
  • the linear slide 32 In the high position of the plate 3, the linear slide 32 is located above the opening 20.
  • the linear slide 32 is located between the opening 19 and the mouth of the frame 2.
  • the central portion of the connecting rod 42 is pivotally and slidingly mounted relative to the frame 2.
  • the opening 20 forms a slide for this purpose.
  • a slider 45 Between the opening 20 and the connecting rod 42 is mounted a slider 45.
  • the slider 45 is in the form of a pin.
  • the slide 45 comprises a base fixed to the connecting rod 42, a cylindrical body of revolution disposed in the opening 20 and a head with a diameter greater than the diameter of the body disposed on the side of the body opposite the connecting rod 42.
  • the body may be provided with 'a bearing so that the slide 45 rolls on the edge of the opening 20.
  • the central portion of the connecting rod 42 is thus pivoted relative to the frame 2 and sliding in translation on the opening 20.
  • the slider 45 is located at the upper end of the opening 20.
  • the slider 44 is located substantially behind the linear slide 32.
  • the connecting rod 42 has an angle of the order of 10 to 30 ° from the horizontal.
  • the shutter 4 is closed, ie substantially vertical.
  • the rear end of the connecting rod 42 descends as well as the front end, the slide 45 to follow said descent is forced to move forward in the opening 20 which causes the rod 42 towards the front, in particular towards the front of the linear slide 32.
  • the amplification of the horizontal movement of the rod 42 towards the front, at this stage is obtained, in particular, by the inclination of the upper end of the opening 20.
  • the amplification of the horizontal movement of the lower end of the flap 4 is also obtained by the positioning of the hinge on the flap 4. The converse applies at the end of the movement for raising the plate 3.
  • the slider 45 is located at the lower end of the opening 20.
  • the slider 44 is located substantially at the front of the linear slide 32.
  • the connecting rod 42 is substantially horizontal.
  • the shutter 4 is open, i.e. projecting forward from its lower end with an inclination depending on the configuration of the ground.
  • the rear end of the connecting rod 42 descends.
  • the front end of the connecting rod 42 descends more slowly because the pivoting of the flap 4 towards the front decreases the amplitude of this movement.
  • the slide 45 is located towards the front end of the opening 20, on a portion close to the vertical. The horizontal movement of the connecting rod 42 towards the front is therefore reduced relative to the vertical movement of the plate 3.
  • Said portion close to the vertical of the opening 20 offers the flap 4 a large clearance to adapt to different soils without special setting.
  • the flap 4 can remain in contact with the ground.
  • the horizontal movement of the connecting rod 42 is very small due to the inclination of the front end of the opening 20.
  • the operation of the shutter is safe, reliable and easy while being driven by the operation of the platform.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Pallets (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (16)

  1. Vorrichtung (1) zur Unterstützung eines Fahrzeugs mit Rädern beim Überwinden eines Hindernisses, insbesondere für Personen mit eingeschränkter Mobilität, umfassend
    - einen stationären Rahmen (2), der einen Boden (8) und zwei Seitenwände (9, 10) umfasst,
    - eine Platte (3), die mit zwei Enden versehen ist, wobei ein erstes Ende zwischen einer oberen Position und einer unteren Position beweglich ist, in der die Platte eine erste Zugangsrampe bildet,
    - eine Antriebsanordnung (6) in vertikaler Verschiebung mindestens von dem ersten Ende, das von der Anordnung getragen wird,
    - eine Klappe (4), welche die Vorderseite der Vorrichtung in der oberen Position der Platte bildet, wobei die Klappe (4) schwenkbar auf der Platte am ersten Ende der Platte montiert ist,
    dadurch gekennzeichnet, dass die Klappe (4) eine zweite Zugangsrampe in der unteren Position der Platte bildet,
    wobei die Vorrichtung (1) ferner einen Mechanismus (40) zum Entfalten der Klappe (4) umfasst, der mindestens eine Pleuelstange (42) umfasst, die ein vorderes Ende umfasst, das mit der Klappe (4) gelenkig verbunden ist, wobei das Gelenk von der oberen und von der unteren Kante der Klappe (4) beabstandet ist, ein hinteres Ende, das mit einem ersten Schlitten (44) verbunden ist, der gleitbeweglich in einer in der Platte vorgesehenen Linearführung (32) montiert ist, und einen zentralen Abschnitt, der mit einem zweiten Schlitten (45) verbunden ist, der gleitbeweglich in einer Führung (19) montiert ist, der in einer Seite des Rahmens (2) vorgesehen ist, wobei sich die Pleuelstange (42) in einer im Wesentlichen vertikalen Ebene bewegt.
  2. Vorrichtung nach Anspruch 1, wobei die Schlitten (44, 45) Scheiben sind.
  3. Vorrichtung nach Anspruch 1 oder 2, wobei die Linearführung (32) in der oberen Position der Platte (3) im Wesentlichen horizontal verläuft.
  4. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die Führung (19) des Rahmens in einem Kreisbogen mit einem im Wesentlichen vertikalen unteren Ende, vorzugsweise mit einem Radius zwischen 30 und 280 mm, liegt.
  5. Vorrichtung nach Anspruch 4, wobei die Führung (19) des Rahmens ein oberes Ende aufweist, das in einem Winkel zwischen 50 und 75° zur Vertikalen geneigt ist.
  6. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die Gelenkachse der Klappe (4) in einer Höhe zwischen 40 und 60 % des Abstands zwischen der oberen und unteren Kante der Klappe (4) angeordnet ist, wobei die Pleuelstange (42) in der oberen Position der Platte in einem Winkel zwischen 10 und 35° zur Horizontalen geneigt ist und die Pleuelstange (42) in der unteren Position der Platte im Wesentlichen horizontal ist.
  7. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die Pleuelstange (42) aus einem zugeschnittenen Blechrohling hergestellt ist.
  8. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die Pleuelstange (42) ein geradliniger Arm ist.
  9. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die in der Platte vorgesehene Linearführung (32) ein längliches Profil umfasst, in dem eine geradlinige Öffnung (33) vorgesehen ist, die den ersten Schlitten (44) aufnimmt.
  10. Vorrichtung nach einem der vorstehenden Ansprüche, umfassend zwei symmetrische Pleuelstangen, eine Pleuelstange (42) pro Seite des Rahmens.
  11. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die Antriebsanordnung (6) Folgendes umfasst:
    - einen Linearzylinder (61), der unter der Platte montiert ist, mit einem stationären Ende, das an das zweite Ende angrenzt und mit dem Boden (8) fest verbunden ist, und einem beweglichen Ende versehen ist,
    - einen Wagen (62), der in horizontaler Verschiebung beweglich und durch den Zylinder angetrieben wird, wobei der Wagen auf Führungen (81) ruht, die auf dem Boden (8) des Rahmens montiert sind, wobei der Wagen zwei Schieber (67) umfasst,
    - ein Paar Arme (63), wobei die Arme symmetrisch sind, wobei jeder Arm auf einem der Schieber (67) des Wagens ruht, wobei jeder Arm das erste Ende der Platte trägt; wobei in der eingefahrenen Position des Stellglieds der Wagen nahe dem zweiten Ende liegt, wobei sich die Arme in der unteren Position und das erste Ende in der Rampenposition befinden, und wobei in der ausgefahrenen Position des Stellglieds sich der Wagen nahe dem ersten Ende befindet, wobei sich die Arme in der oberen Position und das erste Ende in der aufgerichteten Position befinden.
  12. Vorrichtung nach Anspruch 11, wobei die Arme (63) schwenkbar an den Seitenwänden (9, 10) des Rahmens auf einer gemeinsamen, im Wesentlichen horizontalen Achse montiert sind, wobei jeder Arm in einer Seite des Rahmens untergebracht ist, wobei jeder Arm einen aus einem zugeschnittenen Blechrohling hergestellten Körper (63a) umfasst, und wobei jeder Arm einen Stift (65) umfasst, der den Schub des Schiebers (67) des Wagens aufnimmt, und einen Stift (66), der das erste Ende der Platte trägt, wobei jeder Arm zwischen einer Seitenwand (9, 10) des Rahmens und einer Abdeckung (13, 14) parallel zu der Seitenwand montiert ist, wobei mindestens eine bogenförmige Öffnung (19) in der Abdeckung vorgesehen ist, wobei die Stifte durch die Öffnung (19) ragen, wobei die Schwenkachse des Arms bilateral getragen wird, jeder Arm eine dreieckige Form aufweist, wobei ein Scheitelpunkt an der Schwenkachse angeordnet ist, wobei der Winkel ausgebildet ist zwischen einer Geraden, die durch die Schwenkachse eines Arms und den Schieber des Wagens verläuft, und einer Geraden, die durch die Schwenkachse eines Arms und den Arm/Platte-Kontakt verläuft, der zwischen 50 und 70° liegt, wobei vorzugsweise die Gerade durch die Schwenkachse eines Arms und den Schieber des Schlittens verläuft, mit einem Winkelhub während des Schwenkens zwischen 50 und 70°, und wobei die Gerade, die durch die Schwenkachse eines Arms und den Schieber des Wagens verläuft, zur Vertikalen während des Schwenkens um einen Winkel zwischen -30 und +30° geneigt ist.
  13. Vorrichtung nach einem der Ansprüche 11 bis 12, wobei der Wagen (62) einen aus gefaltetem Blech hergestellten Rahmen umfasst, wobei der Rahmen eine Basis umfasst, die im Wesentlichen parallel zum Boden (8) des stationären Rahmens (2) verläuft, einen hinteren Flansch, der mit einer Öffnung versehen ist, durch die der Zylinder hindurchgehen kann, einen vorderen Flansch, der zwei Zonen umfasst, welche die Schieber (67) bilden.
  14. Vorrichtung nach einem der Ansprüche 11 bis 13, wobei das Verstärkungsverhältnis der Arme zwischen 100 und 110 %, vorzugsweise mehr als 100 und weniger als 105 % beträgt, wobei jeder Arm auf einer Seite des Rahmens auf einer Achse montiert ist, die an dem Rahmen befestigt ist.
  15. Vorrichtung nach Anspruch 11, wobei die Pleuelstangen am Wagen und an der Platte gelenkig montiert sind.
  16. Vorrichtung nach einem der vorstehenden Ansprüche, wobei die Platte (3) ein zweites Ende umfasst, das schwenkbar an der Rückseite des Rahmens (2) um eine horizontale Achse montiert ist.
EP16813095.3A 2015-12-01 2016-11-30 Vorrichtung zur unterstützung des fahrens eines fahrzeugs über ein hindernis Active EP3384103B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1561690A FR3044272B1 (fr) 2015-12-01 2015-12-01 Dispositif d'assistance au franchissement d'un obstacle par un vehicule
PCT/FR2016/053150 WO2017093664A1 (fr) 2015-12-01 2016-11-30 Dispositif d'assistance au franchissement d'un obstacle par un vehicule

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EP3384103B1 true EP3384103B1 (de) 2020-01-01

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US (1) US10415254B2 (de)
EP (1) EP3384103B1 (de)
CA (1) CA3006889A1 (de)
DK (1) DK3384103T3 (de)
ES (1) ES2781210T3 (de)
FR (1) FR3044272B1 (de)
PT (1) PT3384103T (de)
WO (1) WO2017093664A1 (de)
ZA (1) ZA201804161B (de)

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Also Published As

Publication number Publication date
FR3044272B1 (fr) 2018-01-12
WO2017093664A1 (fr) 2017-06-08
US20180347203A1 (en) 2018-12-06
DK3384103T3 (da) 2020-04-06
EP3384103A1 (de) 2018-10-10
PT3384103T (pt) 2020-04-06
ZA201804161B (en) 2020-06-24
CA3006889A1 (fr) 2017-06-08
ES2781210T3 (es) 2020-08-31
FR3044272A1 (fr) 2017-06-02
US10415254B2 (en) 2019-09-17

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