Vehicle for transporting wheelchair

Abstract

Vehicle (1) for transporting a wheelchair (50) comprising a frame (2), a plurality of wheels (3a, 3b) rotatable relative to said frame (2), drive means (4) operatively connected to at least some of said wheels (3), a platform (5) adapted to support said wheelchair (50), and a ramp (14) operatively connected to said platform (5) and rotatable between a raised position in which it is spaced from the ground (S), and a lowered position in which it is in contact with the ground (S). The vehicle (1) further comprises a plate (14c) connected to said ramp (14) and movable between a first position, in which it is disposed within the thickness of said ramp (14), and a second position, in which it protrudes projectingly from said ramp (14) transversely to the latter so as to define a seating surface.

Description

[0001] TRANSLATION (RULE 12.3) 07 March 2025

[0002] VEHICLE FOR TRANSPORTING A WHEELCHAIR

[0003] DESCRIPTION

[0004] Technical Field

[0005] The invention relates to a vehicle for transporting a wheelchair.

[0006] Contest

[0007] Self-propelled vehicles fortransporting wheelchairs are known, comprising essentially:

[0008] - a frame;

[0009] - a plurality of wheels rotatable relative to the frame about respective axes of rotation;

[0010] - drive means operatively connected to at least some of the wheels; and

[0011] - a platform suitable for supporting a wheelchair.

[0012] Once the wheelchair is loaded onto such a vehicle, the user can be transported by the vehicle with great freedom, operating it while remaining comfortably seated in the wheelchair.

[0013] However, known vehicles of this type are primarily designed for transporting disabled individuals who use a wheelchair. As a result, separate vehicles are required for transporting persons with reduced mobility who, while not needing a wheelchair, still require assistance to cover long distances. This necessitates the availability of specific vehicles for each requirement, increasing the costs associated with assisting individuals who are not fully autonomous in their movements.

[0014] Moreover, known vehicles of this type are sometimes particularly expensive due to the sophisticated and complex components they incorporate, which are difficult to assemble.

[0015] In light of the above, there is a need to improve known vehicles so that they can be used both for transporting disabled individuals in a wheelchair and for transporting persons with reduced mobility who do not require a wheelchair.

[0016] Additionally, there is a need to enhance known vehicles for transporting wheelchairs so that they can be configured in a simple and cost-effective manner.

[0017] An objective of the invention is to meet the above needs, preferably in a simple and reHable manner.

[0018] Summary of the Invention

[0019] The objective is achieved by a vehicle as defined in the independent claim. The dependent claims define particular embodiments of the invention.

[0020] Brief Description of the Drawings

[0021] Below are described some embodiments of the invention for a better understanding thereof, by way of non-Hmiting example, with reference to the attached drawings in which:

[0022] - figure 1 is a perspective view of a vehicle according to the present invention;

[0023] - figures 2 and 3 are side views of the vehicle of figure 1 in respective different operating conditions;

[0024] - figure 4 is a perspective view of the vehicle of figures 1 to 3 with parts removed for clarity, iHustrating the vehicle frame;

[0025] - figure 5 is an exploded view of the frame shown in figure 4;

[0026] - figure 6 is an enlarged-scale perspective view of a portion of the frame illustrated in figures 4 and 5;

[0027] - figure 7 is a detailed perspective view of a frame component illustrated in figures 4 to 6;

[0028] - figure 8 is an exploded view of the component illustrated in figure 7;

[0029] - figure 9 is a top perspective view of a portion of the vehicle illustrated in figures 1 to 8;

[0030] - figure 10 is a perspective view of the vehicle illustrated in figures 1 to 9, including a removable roof;

[0031] - figure 11 is an enlarged-scale perspective view of a further portion of the vehicle illustrated in figures 1 to 10;

[0032] - figure 12 is a detailed perspective view of a vehicle component iHustrated in figure 11 ; and

[0033] - figure 13 is an exploded view of the component illustrated in Figure 12;

[0034] - figure 14 is a perspective view of a ramp of the vehicle subject of the present invention, in accordance with a preferred embodiment;

[0035] - figures 15A and 15B are two schematic sectional views of the ramp of figure 14, with a plate respectively in a first position and in a second position;

[0036] - figure 16A is a side view of an embodiment of the vehicle with some elements hidden to better highlight others, with a platform in a straight position and the ramp in the first position;

[0037] - figure 16B is a side view of the vehicle of figure 16A, with the platform in a tilted position and the ramp in the second position;

[0038] - figures 17A and 17B are details of figures 16A and 16B, respectively.

[0039] Embodiments of the Invention

[0040] In Figure 1, reference number 1 is used to indicate, as a whole, a self-propelled vehicle for transporting a wheelchair 50, comprising:

[0041] - a frame 2;

[0042] - a plurality of wheels 3a, 3b, rotatable relative to the frame 2 around respective axes of rotation A, B;

[0043] - drive means 4, operatively connected to at least some of the wheels 3a, 3b and configured to rotate said wheels 3a, 3b around their respective axes of rotation A, B; and

[0044] - a platform 5, preferably plate-shaped, configured to support the wheelchair 50.

[0045] Preferably, the platform 5 is provided with an abutment surface 51, on which the wheelchair 50 is intended to be placed, and advantageously with an opposite lower surface, which, in use, is faced towards the ground S.

[0046] At least some of the wheels 3a, 3b are steerable about respective steering axes transverse to the rotation axes A, B.

[0047] The vehicle 1 further comprises a suspension system 9 adapted to operatively connect the wheels 3a, 3b to the frame 2 at variable relative distances.

[0048] It is possible to define a reference system fixed to the vehicle 1 and comprising:

[0049] - a direction X of longitudinal extension;

[0050] - a direction Z orthogonal to direction X and oriented vertically with respect to the ground (S) on which the vehicle (1) is placed; and

[0051] - a direction Y orthogonal to directions X and Z.

[0052] Considering a direction of advancement F of the vehicle 1, the vehicle 1 comprises a front end la and a rear end lb. The front end la and the rear end lb are opposite to each other along direction X.

[0053] Still considering the direction of advancement F, the vehicle 1 comprises a left lateral portion 1c and a right lateral portion Id. The left lateral portion 1c and the right lateral portion Id are opposite to each other along direction Y.

[0054] Advantageously, the plurality of wheels 3a, 3b comprises at least one front wheel 3a and at least one rear wheel 3b considering a direction of advancement F of the vehicle 1.

[0055] The plurality of wheels of the vehicle 1 comprises, in greater detail, a pair of front wheels 3a arranged at the front end la and a pair of rear wheels 3b arranged at the rear end lb. In detail, the two front wheels 3a are spaced apart from each other parallel to direction Y; the two rear wheels 3b are spaced apart from each other parallel to direction Y.

[0056] In detail, the drive means 4 comprise an electric motor 6 and at least one electric battery 7 electrically connected to the electric motor 6.

[0057] The vehicle 1 can also be associated with a movement speed v and an acceleration a with which it moves relative to the ground S parallel to the direction of advancement F.

[0058] Advantageously, the frame 2 comprises a plurality of tubular elements - generally indicated with reference number 10 - releasably coupled to each other.

[0059] Releasably coupled means that the tubular elements 10 are removably attached to each other, by means of fastening means that allow the transition from a coupled configuration, in which the tubular elements 10 are connected to each other, to an uncoupled configuration, in which they are mechanically separated from each other, in a reversible manner. This allows the frame 2 to be assembled and disassembled quickly, reducing both production and maintenance costs.

[0060] In detail, frame 2 comprises (Figure 5):

[0061] - a set 30 of tubular elements 10 arranged at the left lateral portion 1c;

[0062] - a set 31 of tubular elements 10 arranged at the right lateral portion Id; and

[0063] - a set 32 of tubular elements 10 extending transversely to the tubular elements 10 of sets 30 and 31.

[0064] The frame 2 includes, moreover, a base portion 33, which supports platform 5 and to which tubular elements 10 of assemblies 30 and 31 are coupled.

[0065] The base portion 33 includes, itself:

[0066] - a perimeter structure 34;

[0067] - a plurality of flat panels 35 arranged within the perimeter defined by the perimeter structure 34 and supported by the perimeter structure 34; and

[0068] - a plurality of attachments 36a, 36b, 36c adapted to allow connection of the tubular elements 10 of sets 30 and 31 to the base portion 33.

[0069] Preferably, the panels 35 are made of aluminum.

[0070] In detail, the base portion 33 includes three pairs of attachments 36a, 36b, 36c. Pair 36a is arranged on the front end la side, pair 36b is arranged on the rear end lb side, and pair 36c is interposed between pair 36a and pair 36b along the X direction (Figure 5).

[0071] In addition, each pair of attachments 36a, 36b, 36c includes an attachment placed on the side of the left lateral portion 1c and an attachment placed on the side of the right lateral portion Id.

[0072] Preferably, moreover, the attachments of the pairs of attachments 36a, 36b, 36c are arranged at the perimeter structure 34. In greater detail, each attachment of the pairs of attachments 36a, 36b, 36c comprises a cylindrical hole 37 adapted to be engaged by a respective tubular element 10 of the sets 30 and 31. The cylindrical holes 37 are blind and directed along respective axes transverse to the perimeter structure 34.

[0073] Specifically, the inner diameter of the cylindrical holes 37 is greater or slightly greater than the outer diameter of the tubular elements 10, so as to allow the tubular elements 10 to be inserted into the cylindrical holes 37.

[0074] For the sake of brevity, only set 31 will be described in detail below, since sets 30 and 31 are identical to each other.

[0075] In particular, the tubular elements 10 of the set 31 comprise a tubular element 10a disposed from the side of the front end la and a tubular element 10b disposed from the side of the rear end lb. The tubular element 10a engages a respective attachment of the pair of attachments 36a.

[0076] The set 31 further comprises a tubular element 10c, which engages a respective attachment of the pair of attachments 36b, and a tubular element lOd, which engages a respective attachment of the pair of attachments 36c.

[0077] Set 31 also includes:

[0078] - a tubular element lOe, which is engaged by the tubular element 10a, the tubular element 10b and a tubular element of the set 32, as will be described below; and

[0079] - a tubular element lOf, which is engaged by tubular element 10b, tubular element 10c and tubular element lOd.

[0080] In detail, the tubular element lOe allows the tubular elements 10a, 10b to be fastened to each other and to the set 32; the tubular element lOf allows the tubular elements 10b, 10c, lOd to be fastened to each other and thus to fasten the tubular element 10b to the base portion 33.

[0081] In the illustrated form of realisation, tubular element 10a comprises:

[0082] - a section 100 on the side of the rear end lb, extending parallel to the direction X and engaging the tubular element lOe; - a section 101 on the side of the front end la, extending parallel to the Z direction and engaging one of the attachments of the pair of attachments 36a; and

[0083] - a section 102, interposed between section 100 and section 101 parallel to the direction X and directed obliquely to the latter.

[0084] Tubular element 10b comprises:

[0085] - a section 103, extending parallel to the direction X and engaged with the tubular element lOe;

[0086] - a section 104, extending parallel to the direction X and engaged with the tubular element lOf.

[0087] Sections 103 and 104 are spaced from each other parallel to the Z direction. In detail, the section 104 is arranged inferiorly to the section 103, that is, it is interposed between the section 103 and the base portion 33 parallel to the Z direction.

[0088] In addition, the section 103 defines an axis T parallel to the direction X.

[0089] The tubular element 10b further comprises a curved section 105 joining the sections 103 and 104 together.

[0090] The tubular element 10c has a curved shape and is directed transversely to the base portion 33.

[0091] The tubular element lOd comprises:

[0092] - a section 106, extending parallel or substantially parallel to the direction Z and engaging one of the attachments of the pair of attachments 36c; and

[0093] - a section 107, which engages the tubular element lOf and extends transversely relative to the section 106.

[0094] Figures 6, 7 and 8 illustrate tubular element lOf to an enlarged scale. For the sake of brevity, only tubular element lOf will be described below, tubular elements lOe and lOf being identical.

[0095] The tubular element lOf comprises:

[0096] - a body 108 extending parallel to a direction U ;

[0097] - a body 109 extending parallel to a direction V directed perpendicularly to the direction U.

[0098] In detail, the bodies 108 and 109 are arranged so as to form a ‘T’.

[0099] Body 108 comprises, itself:

[0100] - two ends 108a, 108b opposing each other parallel to the direction U ;

[0101] - a cylindrical hole 108c extending parallel to the direction U from the end 108a towards the end 108b; and

[0102] - a cylindrical hole 108d extending parallel to the direction U from the end 108b towards the end 108a.

[0103] In detail, cylindrical holes 108c and 108d are blind and extend along respective extensions of body 108 parallel to the direction U.

[0104] The body 109 extends from the body 108 at an intermediate portion between the end 108a and the end 108b parallel to the direction U and comprises:

[0105] - an end 109a, at which it joins the body 108;

[0106] - an end 109b opposite to the end 109a parallel to the direction V; and

[0107] - a cylindrical hole 109c extending parallel to the direction V between the end 109a and the end 109b.

[0108] In detail, the cylindrical hole 109c is blind and extends along a portion of the extension of the body 109 parallel to the direction V.

[0109] As illustrated in Figure 6, the cylindrical hole 108c is engaged by the tubular element 10b, the cylindrical hole 108d is engaged by the tubular element lOd and the cylindrical hole 109c is engaged by the tubular element 10c.

[0110] The tubular element lOf also comprises two ribs 110 of reinforcement, which extend between the body 108 and the body 109.

[0111] Considering a plane identified by the directions U and V, the ribs 110 have a triangular shape.

[0112] The tubular element lOf also comprises (Figure 8):

[0113] - three seals 111, 112, 113; - a seat 114 at the cylindrical hole 108c to accommodate the seal 111;

[0114] - a seat 115 at the cylindrical hole 108d to accommodate the seal 112; and

[0115] - a seat 116 at the cylindrical hole 109c to accommodate the seal 113.

[0116] In the illustrated embodiment, considering a section plane passing through the direction U, the seats 114 and 115 have a semi-circular shape; similarly, considering a section plane passing through the direction V, the seat 116 has a semi-circular shape.

[0117] Preferably, the tubular element lOf comprises two semi-portions 120 and 121 coupled together to form the bodies 108, 109 and the cylindrical holes 108c, 108d, 109c (Figure 8).

[0118] The tubular element lOf further comprises:

[0119] - two through holes 122, 123 each engaging a respective rib 110; and

[0120] - two connecting elements 124, 125 each engaging a respective hole 122, 123.

[0121] Each hole 122, 123 is directed along respective directions perpendicular to the U and V directions through both semi-portions 120 and 121. In addition, the connecting elements 124 and 125 are adapted to attach the two semi-portions 120, 121 to each other.

[0122] For example, the connecting elements 124 and 125 comprise screws.

[0123] Preferably, in addition, the semi-portions 120 and 121 are identical to each other.

[0124] The set 32 of tubular elements 10 comprises:

[0125] - a tubular element 10g directed parallel to the direction Y and engaging the tubular element lOe of the set 30 and the tubular element lOe of the set 31; and

[0126] - a tubular element 10h, which protrudes from the tubular element 10g in the opposite direction to the platform 5.

[0127] In detail, the tubular element lOh comprises (Figure 5)

[0128] - a section 117 parallel to the direction Y and spaced from the tubular element 10g parallel to the direction Z;

[0129] - a section 118, which extends from the tubular element 10g to the section 117 obliquely with respect to the tubular element 10g; and

[0130] - a section 119, extending from the section 117 to the tubular element 10g obliquely with respect to the tubular element 10g.

[0131] The section 118 is arranged from the part of the section 117 facing the right lateral portion Id; the section 119 is arranged from the part of the section 117 facing the left lateral portion 1c.

[0132] In further detail, proceeding parallel to the direction Y from the left lateral portion 1c to the right lateral portion Id, the distance between the points of the section 119 and the tubular element 10g parallel to the direction Z progressively increases and the distance between the points of the section 118 and the tubular element 10g parallel to the direction Z progressively decreases.

[0133] In other words, the tubular element lOh has the shape of an inverted U.

[0134] The tubular element lOh performs the function of an anti-roll handle for the user of vehicle 1.

[0135] Preferably, the vehicle 1 comprises an elastic belt 23 partially wrapped around the tubular element 10a of the set 30 and partially wrapped around the tubular element 10a of the set 31. In detail, the elastic belt 23 extends parallel or substantially parallel to the direction Y (Figures 1, 2 and 3).

[0136] The vehicle 1 also comprises a plurality of lateral panels 24 fixed to the frame 2 and extending from the base portion 33 in correspondence with the left lateral portion 1c and the right lateral portion Id.

[0137] In detail, the lateral panels 24 are made of plastic material and obtained by vacuum thermoforming. Alternatively, the lateral panels 24 are made of hemp or composite materials.

[0138] Preferably, the lateral panels 24 are covered with a coloured film. The vehicle 1 also comprises a front body 25 arranged at the front end la. In detail, the front body 25 has a parallelepiped or substantially parallelepiped shape and extends from the base portion 33 parallel to the Z direction.

[0139] As illustrated in Figure 9, the vehicle 1 includes a compartment 8 for housing the electric battery 7 in a removable manner. In detail, the compartment 8 is arranged at the front end la and is closed by a lid, not illustrated. Preferably, the lid is provided with a lock.

[0140] In further detail, the compartment 8 is arranged inside the front body 25.

[0141] The vehicle 1 also comprises a tank 40 suitable for at least partially containing one or more pieces of luggage. In further detail, the tank 40 is arranged at the front end la.

[0142] Preferably, the tank 40 is arranged above the compartment 8 parallel to the direction Z relative to the ground S. In further detail, the tank 40 is arranged at the front body 25 and at least partially aligned with the tubular element 10g parallel to the direction X.

[0143] In the illustrated non-limiting form of realisation, in a plane perpendicular to the direction Z, the tank 40 has dimensions of at least 55 x 40 cm. In addition, the distance between the bottom of the tank 40 and the tubular element 10g parallel to the direction is at least equal to 20 cm.

[0144] Furthermore, as illustrated in Figure 1, the elastic belt 23 is at least partially aligned with the tank 40 parallel to the direction Y. In particular, the elastic belt 23 may be used to retain the luggage housed in the tank 40.

[0145] The vehicle 1 further comprises:

[0146] - a joystick 11 arranged on the side of the left lateral portion 1c;

[0147] - a joystick 12 disposed on the side of the right lateral portion Id; and

[0148] - an electronic control unit 20 operatively connected to the drive means 4 and to the joysticks 11 and 12.

[0149] The joysticks 11, 12 are actuatable by the user to control the movement of the vehicle 1 with respect to the ground S. In detail, in a known manner, the joysticks 11, 12 are movable in at least one direction with respect to a rest position and usable by the user of the vehicle 1 to control the direction of motion, the direction of motion and / or the movement speed v of the vehicle 1.

[0150] The electronic control unit 20 is configured to control the drive means 4 according to the movement of one or both joysticks 11, 12 from the rest position.

[0151] In detail, the joysticks 11 and 12 are identical to each other. In further detail, the joysticks 11 and 12 are capable of controlling the same degrees of freedom of the vehicle 1.

[0152] Preferably, the electronic control unit 20 is also configured to control the drive means 4 such that the absolute value of the acceleration a is less than a threshold value ao (|a|< ao).

[0153] The threshold value ao is determined in such a way that for any given time interval, the trend of the movement velocity v as a function of time is sufficiently different from a step function or at least not approximate to it.

[0154] Alternatively or additionally, the electronic control unit 20 is configured to control the drive means 4 in such a way that the absolute value of the movement speed v is always less than a threshold value v0(|v| < v0). As an example, the threshold value vo is of the order of m / s.

[0155] The threshold values vo and ao are stored in an opportune memory of the electronic control unit 20.

[0156] In detail, the electronic control unit 20 is configured to regulate the power output of the electric motor 6.

[0157] The vehicle 1 further comprises two emergency buttons 17 operably connected to the electronic control unit 20. Each of the emergency buttons 17 is actuatable by the user of the vehicle 1 to command the stopping of the vehicle 1 and / or to request rescue.

[0158] In detail, one of the two emergency buttons 17 is arranged on the side of the left lateral portion 1c and the other of the two emergency buttons is arranged on the side of the right lateral portion Id (Figure 4). In greater detail, the vehicle 1 comprises two supports 18 fixed to the frame 2, one of which is arranged on the side of the left lateral portion 1c and the other of which is arranged on the side of the right lateral portion Id. Each support 18 supports a respective joystick 11, 12 and a respective emergency button 17.

[0159] For the sake of brevity, it is described in the following one of the two supports 18, the two supports 18 being identical to each other.

[0160] In detail, the support 18 comprises a hole 18a passing parallel to the axis T and engaging a respective tubular element 10b coaxially to the axis T (Figure 9).

[0161] In the illustrated embodiment, the support 18 has a parallelepiped shape and comprises a flat surface 18b opposite to the platform 5 along the Z direction. In addition, the emergency button 17 is arranged at an end of the support 18 opposite the hole 18a parallel to the Y direction. In addition, the joystick 11, 12 is arranged in correspondence of the surface 18b.

[0162] As illustrated in Figures 2 and 3, platform 5 is tillable about a rotational C axis orthogonal to the X direction. The platform 5 is rotatable between:

[0163] - a straight position, in which the platform 5 is positioned perpendicular to the direction Z (Figure 2); and

[0164] - a tilted position, in which, proceeding along the X direction from the front end la to the rear end lb, the distance between the platform 5 and the ground S parallel to the Z direction gradually decreases (Figure 3).

[0165] Advantageously, the platform 5 extends along the direction X from a rear extremal edge 5' arranged at the rear end lb of the vehicle 1.

[0166] Preferably, when the platform 5 is in the tilted position, the rear extremal edge 5' is placed at a lower elevation relative to the ground S than when the platform 5 is in the straight position

[0167] In this way, the tilt of the platform 5 (in the tilted position) facilitates loading and unloading of the wheelchair 50 by reducing the height difference between the ground S and the platform 5 itself.

[0168] Preferably, the axis C coincides with the axis A of rotation of the front wheels 3a.

[0169] Advantageously, frame 2 is rigidly fixed to platform 5. Thus, the frame 2 moves solidly to the platform 5 during the transition of the latter between the straight position and the tilted position.

[0170] Advantageously, the vehicle 1 comprises attitude variation means 70, which are mechanically connected to the platform 5 and are arranged to move the platform 5 between the straight position and the tilted position.

[0171] Preferably, the attitude variation means 70 comprise at least one movable frame 701, which is placed as a connection between the platform 5 and at least one of the rear wheels 3b, is hinged to the platform 5 around a corresponding pivot pin 702, and rotatably carries at least one of the rear wheels 3b mounted thereon.

[0172] Preferably, the movable frame 701 is hinged to the platform 5 at the rear end lb of the vehicle 1.

[0173] Advantageously, the attitude variation means 70 comprise two movable frames 701 hinged to the platform 5 at the left lateral portion 1c and the right lateral portion Id of the vehicle 1, respectively. Preferably, each movable frame 701 rotatably carries a corresponding rear wheel 3b of the rear wheel pair 3b of the vehicle 1.

[0174] Preferably, the attitude variation means 70 comprise at least one first actuator 703, which is mechanically connected to the platform 5 and the corresponding movable frame 701 and is actuatable to move the one movable frame 701 with respect to the rear wheel 3b and with respect to the platform 5 to move the platform 5 itself between the straight position and the tilted position.

[0175] In this way, the movement of the platform 5 between the straight and the tilted position is performed automatically, in particular through the action of the first actuator 703 on the corresponding movable frame 701, without the need for manual intervention, eliminating the need for physical effort. Moreover, a disabled individual can easily manage this operation independently, being able to tilt the platform 5 according to his needs without external assistance, thus improving independence and comfort while using the vehicle 1. Advantageously, in accordance with a preferred embodiment, two first actuators 703 are provided, each of which is connected to the corresponding movable frame 701.

[0176] Preferably, the first actuator 703 is a linear actuator, in particular chosen from: pneumatic actuator, hydraulic actuator, electric actuator.

[0177] Advantageously, the first actuator 703 is arranged to move the movable frame 701 between a first configuration, in which the pivot pin 702 is placed at a first height and in which the movable frame 701 supports the platform 5 in the straight position, and a second configuration, in which the pivot pin 702 is placed at a second height lower than the first height and in which the movable frame 701 supports the platform 5 in the tilted position.

[0178] Operationally, in order to move the platform 5 from the straight position to the tilted position, the first actuator 703 is actuated to move the movable frame 702 between the first configuration and the second configuration, in particular by bringing it into rotation around the pivot pin 702, and causing a subsequent lowering of the pivot pin 702 with respect to the ground S which results in a lowering of the rear extremal edge 5' of the platform 5 towards the ground S thereby inclining the platform 5. The operation to move the platform 5 from the tilted position to the straight position is similar by operating the first actuator 703 in the opposite direction.

[0179] Advantageously, with reference to the embodiment of Figures 17A and 17B (which is alternative to that of the attitude variation means of Figures 2 and 3), the movable frame 701 comprises a first rigid body 704, which is hinged to the platform 5 around the corresponding pivot pin 702 and carries a corresponding rear wheel 3b mounted thereon.

[0180] Preferably, the first rigid body 704 extends along a first prevailing direction of extension S 1 between a first extremal portion 704‘, at which it is hinged to the platform 5, and an opposite second extremal portion 704”.

[0181] Advantageously, the first rigid body 704 comprises a support bracket 708, which is arranged in correspondence of the second extremal portion 704” and carries rotatably mounted the rear wheel 3b around the corresponding axis of rotation B. Without thereby going beyond the scope of protection of the present invention, the rear wheel 3b can be rotatably mounted directly at the second extremal portion 704 ‘ , in which case the presence of the support bracket 708 is not required.

[0182] Advantageously, the movable frame 701 comprises a second rigid body 705, which is hinged to the platform 5 around the corresponding pivot pin 702 and to which the corresponding first actuator 703 is mechanically connected.

[0183] Preferably, the second rigid body 705 extends along a second prevailing direction of extension S2 between a third extremal portion 705 ‘, at which it is hinged to the platform 5, and an opposite fourth extremal portion 705”.

[0184] Advantageously, the first actuator 703 is mechanically connected to the second rigid body 705 between the third extremal portion 705’ and the fourth extremal portion 705”, preferably closer to the fourth extremal portion 705”.

[0185] Advantageously, the first rigid body 704 and the second rigid body 705 are arranged with respectively the first prevailing direction of extension SI and the second prevailing direction of extension S2 incident to each other and preferably lie in parallel (possibly coplanar) planes.

[0186] In use, the angle between the first prevailing direction of extension S 1 of the first rigid body 704 and the second prevailing direction of extension S2 of the second rigid body 705 is between 60° and 120°, even more preferably between 70° and 110° and even more preferably between 80° and 100°.

[0187] Advantageously, the movable frame 701 comprises a connecting member 706, which is provided with a first end 706’ hinged to the first rigid body 704 and a second end 706” hinged to the second rigid body 705.

[0188] Preferably, the first end 706’ is hinged to the first rigid body 704 between the first extremal portion 704’ and the second extremal portion 704‘ ’ of the latter, and even more preferably at an intermediate position between the first extremal portion 704 ’ and the second extremal portion 704 ” .

[0189] In this way, the connecting member 706 structurally connects the rigid bodies 704, 705 increasing the structural strength of the movable frame 701 and improving the overall stability of the vehicle 1. Preferably, the connecting member 706 comprises at least one rear suspension 707.

[0190] Advantageously, the rear suspension 707 comprises a spring and a shock absorber. In particular, the spring has the function of absorbing the compression and tension forces that develop between the rigid bodies 704, 705, while the shock absorber manages the kinetic energy accumulated during movement, preventing the movable frame 701 from experiencing excessive oscillations and vibrations.

[0191] Advantageously, the rear suspension 707 is susceptible to varying the distance between the first and second ends 706 ‘, 706” of the connecting member 706 (depending on the stresses received), allowing a limited rotation of the first rigid body 704 with respect to the second rigid body 705 around the pivot pin 702 (resulting in a variation of the angle between the first and second prevailing direction of extensions SI, S2).

[0192] In this way, advantageously, the rear suspension 707 allows the rigid bodies 704 and 705 to move in a controlled manner relative to each other, while limiting excessive oscillation. In this way, the moving frame 701 is able to absorb stresses from uneven terrain, while maintaining structural rigidity that prevents damage or deformation, contributing to a smoother and more comfortable driving experience and improving vehicle 1 stability.

[0193] In accordance with an embodiment not illustrated in the attached figures, the platform 5 is tillable with respect to the frame 2 around the axis of rotation, the platform 5 being in particular rotatable with respect to the frame 2 itself.

[0194] The vehicle 1 further comprises a ramp 14, preferably substantially plate-shaped, operatively connected to the platform 5 on the side of the rear end lb and rotatable with respect to the platform 5 about a rotation axis D orthogonal to the direction X.

[0195] The ramp 14 is rotatable between:

[0196] - a raised position, in which the ramp 14 is at a distance from the ground S (Figure 2); and

[0197] - a lowered position, in which the ramp 14 is in contact with the ground S (Figure 3).

[0198] Preferably, with reference, for example, to Figure 14, the ramp (14) extends along a direction of extension (P) substantially orthogonal to the axis of rotation D between a constrained end (14’), at which it is pivotally connected to the platform 5, and in particular to the rear extremal edge 5’ of the latter, and an opposite free end (14"), which is advantageously arranged in contact with the ground S when the ramp 14 is in the lowered position

[0199] In detail, when ramp 14 is in the raised position, ramp 14 is positioned transversely to platform 5. In further detail, when ramp 14 is in the raised position, ramp 14 is directed orthogonally to platform 5.

[0200] When the ramp 14 is in the lowered position, proceeding along the X direction oriented from the front end la to the rear end lb, the distance between the ramp 14 and the ground S parallel to the Z direction gradually decreases (Figure 3).

[0201] In further detail, ramp 14 can be arranged in the lowered position when platform 5 is in the tilted position (Figure 3).

[0202] Preferably, the tilt of the platform 5 in the tilted position with respect to the ground S and the tilt of the ramp 14 in the lowered position with respect to the ground S are substantially equal to each other. Therefore, platform 5 in the tilted position and the ramp 14 in the lowered position fulfill the role of a slop for loading the wheelchair 50 aboard vehicle 1.

[0203] In this way, the arrangement of platform 5 in the tilted position and ramp 14 with essentially the same tilt angle avoids the presence of slope changes at the transition between ramp 14 and platform 5 by allowing a smooth and uniform transition between the two elements, ensuring that there are no unevenness or interruptions in the path and, thus, facilitating the loading of wheelchair 50 onto platform 5 itself.

[0204] The ramp 14 includes a first surface 14a, which (when ramp 14 is in the lowered position) is adapted to cooperate in contact with wheelchair 50, and a second surface 14b, which is intended to contact the ground S (when ramp 14 is in the lowered position). Surfaces 14a and 14b are opposite to each other with respect to the thickness of ramp 14.

[0205] In detail, when the ramp 14 is in the raised position, the first surface 14a faces the front end la and the second surface 14b faces the rear end lb (Figure 2); when the ramp 14 is in the lowered position, the second surface 14b faces the ground S and the first surface 14a faces the ground S (Figure 2).

[0206] Advantageously, with reference to Figures 14 and 15, the first surface 14a of the ramp 14 is provided with a greater portion 141a, which extends from the constrained end 14’ of the ramp 14 preferably along a first plane of prevailing development. Advantageously, the first surface 14a of the ramp 14 is provided with a fillet portion 142a, which extends from the free end 14" and is inclined with respect to the greater portion 141a. Specifically, when the ramp 14 is in the lowered position, the fillet portion 142a is placed at a junction between the greater portion 141a and the ground S in such a way as to facilitate the ascent of the wheelchair 50 to the platform 5.

[0207] Advantageously, the greater portion 141a extends, along the direction of development P, for more than half the length of the ramp 14 (along the direction of development P) and preferably for at least about two-thirds of that length.

[0208] Preferably, when the platform 5 is in the tilted position and the ramp 14 is in the lowered position, the abutment surface 51 of the platform 5 is coplanar to the greater portion 141a of the first surface 14a of the ramp 14.

[0209] In this way, the coplanarity between the abutment surface 51 and the greater portion 141a ensures a continuous surface between the two by eliminating any discontinuity, particularly at the junction between the rear extremal edge 5' of platform 5 and the constrained end 14’ of ramp 14 and, thus, reducing the effort required to get the wheelchair 50 to overcome any discontinuity between ramp 14 and platform 5 in order to place it on platform 5.

[0210] Advantageously, the abutment surface 51 of the platform 5 and the greater portion 141a of the ramp 14 are developed on the same tilt plane which is preferably inclined with respect to the ground by an angle between 1° and 7°, even more preferably between 2° and 6°, even more preferably between 3° and 5°, advantageously 4°.

[0211] In particular, the lack of unevenness and the reduced tilt with respect to the ground of the tilt plane allows a disabled individual to get on the platform 5 with a wheelchair 50 independently with reduced physical effort, thus improving independence and comfort while using the vehicle 1.

[0212] The vehicle 1 subject of the present invention includes a plate 14c, which is connected to ramp 14 and (particularly when ramp 14 is in the raised position) is movable between a first position, in which plate 14c is placed within the thickness of ramp 14, particularly without protruding from the first surface 14a, and a second position, in which plate 14c protrudes projectingly from the first surface 14a toward the front end la of vehicle 1 and is arranged transversely to the first surface 14a so as to define a seating plane.

[0213] In particular, when ramp 14 is in the raised position and plate 14c is in the second position (preferably directed transversely from surface 14a toward front end la), plate 14c performs the function of a seat, being in particular substantially parallel to the X direction.

[0214] In this way, the vehicle (1) subject of the present invention can be used to move both disabled individuals who use a wheelchair (50) and who can climb onto the platform (5) of the vehicle (1) by means of the ramp (14), and persons with reduced mobility who, although they do not need a wheelchair (50), still need to be transported when they have to travel long distances. In particular, the latter can sit on the plate (14c) when it is in the second position, thus benefiting from a stable and comfortable support during transport. This feature is particularly useful, for example, in public places such as airports or stations, where it is necessaiy to ensure the efficient mobility of people, particularly by allowing a single vehicle (1) to be used to transport both disabled and mobility-impaired individual, eliminating the need for specific vehicles for each need and thus helping to reduce the cost of assistance to, for example, the airport or station.

[0215] In addition, since plate 14c in the first position is placed within the thickness of ramp 14 without protruding from the first surface 14a, it ensures a uniform surface free of unevenness, eliminating steps or protrusions that could interfere with the passage of wheelchair 50 while climbing to platform 5 and, therefore, or could pose a stumbling hazard to mobility-impaired individuals as they ascend to platform 5, ensuring a more practical and comfortable use of vehicle 1 for both disabled and mobility-impaired individuals. Advantageously, in accordance with an embodiment not illustrated, the plate 14c is rotatably attached to the first surface 14a between the first position, where it is preferably superimposed on the first surface 14a and directed parallel to the first surface 14a, and the second position where it is directed transversely to the first surface 14a (Figure 9). Preferably, rotatably fixed means that the plate 14c is connected to the first surface 14a in such a way that it can perform a movement that includes at least one rotational component. Such motion may consist, for example, of pure rotation about a fixed axis or a roto- translation motion.

[0216] Preferably, plate 14c in the first position is placed lying along along ramp 14 (particularly along the direction of extension P of the latter).

[0217] In this way, when the plate 14c is not in use as a seat (in other words, when it is in the second position), it remains substantially aligned with respect to the ramp 14 and, when the latter is in the lowered position, easy and safe access to the wheelchair 50 via the ramp 14 is ensured.

[0218] Advantageously, with reference to Figures 15, plate 14c extends, along an extension direction E, between a free edge 141 and a fixed constrained 142. Preferably, the constrained edge 142 is rotatable about a guide axis G parallel to the axis of rotation D, and is slidably constrained to the ramp 14 along a movement direction W that is orthogonal to the axis of rotation D and preferably parallel to at least the greater portion 141a of the first surface 14a.

[0219] In this way, the sliding constraint of the constrained edge 142 along the movement direction W, combined with the rotation about the guide axis G, allows the plate 14c to translate as it rotates about the guide axis G itself, in particular allowing it to make a rototranslational motion, specifically ensuring a smooth and controlled transition between the first position and the second position.

[0220] Advantageously, when the plate 14c is in the first position, the constrained edge 142 is placed at a shorter distance from the axis of rotation D than when the plate 14c is in the second position.

[0221] Preferably, the ramp 14 includes at least one first guide 143, which run parallel to the movement direction W. Specifically, the ramp 14 includes two first guides 143 that are parallel to each other.

[0222] Advantageously, the plate 14c includes a first pivot 144, which is arranged at the constrained edge 142 of plate 14c, runs along the guide axis G, and is engaged, at its ends, to each first guide 143 of ramp 14.

[0223] In this way, the coupling between the first pivot 144 and each first guide 143 allows the plate 14c to perform a rototranslational motion between the first and second positions. Specifically, as the first pivot 144 slides along the first guides 143 (particularly along the movement direction W), the plate 14c can rotate around the guide axis G, providing a controlled and smooth transition between the first position and the second position.

[0224] Advantageously, vehicle 1 includes a support body 60, preferably plate shaped, which extends between a first end 601, which is hinged to ramp 14 about a first hinging axis parallel to the rotation axis D, and a second end 602, which is hinged to plate 14c about a second hinging axis parallel to the first hinging axis.

[0225] In this way, support body 60 helps guide and stabilize the movement of the plate 14c during the transition between the first and second positions. In particular, its hinged configuration to ramp 14 and plate 14c allows the latter's trajectory to be precisely controlled, preventing unwanted movement and ensuring a smooth transition between the first position and the second position. In addition, when plate 14c is in the second position and protrudes projectingly from the first surface 14a, support body 60 provides an additional point of restraint, increasing strength and improving load distribution when using plate 14c as a seat.

[0226] Advantageously, the support body 60 includes a second pin 603, which is arranged at the second end 602, develops along the second hinging axis, and is mechanically connected to the plate 14c, particularly at the free edge 141 of the latter.

[0227] Advantageously, with reference to figures 15, ramp 14 is provided with an inner seat 146, provided with an opening 146' formed on the first surface 14a in which plate 14c is housed when the latter is in the first position.

[0228] In this way, when the plate 14c is in the first position and is housed in the inner seat 146, it does not protrude from the first surface 14a of the ramp 14, thus enabling the wheelchair 50 to travel easily over the ramp 14 itself when it is in the lowered position, without obstacles or unevenness.

[0229] Advantageously, when plate 14c is in the first position, the support body 60 is positioned so as to close the opening 146' of the inner seat 146 and defines a corresponding area of the first surface 14a, and in particular of the greater portion 141a of the latter.

[0230] In this way, when plate 14c is in the first position, support body 60 provides continuity of the first surface 14a of plate 14c, allowing wheelchair 50 to travel along ramp 14 toward platform 5 without risking getting stuck or suffering sudden unevenness due to the presence of the opening 146'. This ensures a safe and smooth transit, avoiding inconvenience or possible difficulty in maneuvering for the user, thus contributes to improving the overall accessibility of vehicle 1.

[0231] Advantageously, the ramp 14 includes a front plate 147, which, when the ramp 14 is in the raised position, faces the front end la of the vehicle and on which the opening 146’ is made.

[0232] Preferably, the support body 60 is developed between a front face 60’, which, when the plate 14c is in the first position, faces the front end la of the vehicle 1, and an opposite rear face 60”.

[0233] Advantageously, when the plate 14c is in the first position, it is arranged completely within the inner seat 146 of the ramp 14 and the support body 60 is arranged at the opening 146' with the front face 60' defining with the front plate 147 the first surface 14a, and particularly its greater portion 141a, of the ramp 14.

[0234] Preferably, the plate 14c is movable between the first and second positions in a manual manner by a user. Optionally, automated means of movement can be arranged.

[0235] Preferably, vehicle 1 includes actuating means (not shown in the attached figures) mechanically connected to ramp 14 and frame 2 to move ramp 14 between the raised and lowered positions.

[0236] Advantageously, the actuating means includes at least one second actuator, preferably two, which is mechanically attached to the frame 2 and the ramp 14. Preferably, the second actuator is a linear actuator, in particular chosen from: pneumatic actuator, hydraulic actuator, electric actuator.

[0237] Preferably, each second actuator is housed within the inner housing 146’ of the ramp 14. In this way, the second actuators are effectively invisible from the outside of the vehicle 1 increasing the aesthetic level of the latter.

[0238] Preferably, the plate 14c is made of metal and / or plastic.

[0239] In addition, the distance parallel to the direction Z between platform 5 and plate 14c when arranged transversely to the first surface 14a is between 45 cm and 55 cm. In other words, the distance parallel to the direction Z between platform 5 and plate 14c when arranged transversely to the first surface 14a is comparable to the seat height of an average wheelchair relative to the ground.

[0240] Ramp 14 also includes a presence sensor 14d - illustrated only schematically in figure 9 - that is designed to detect the presence of an occupant on plate 14c when it is performing the seat function. As an example, the presence sensor 14d is a weight sensor.

[0241] Vehicle 1 also includes two arm rests 13c, 13d, each fitted around a respective tubular element 10b.

[0242] Each arm rest 13c, 13d is rotatable with respect to the respective tubular element 10b around to relative axis T.

[0243] In detail, arm rest 13c is arranged on the side of the left lateral portion 1c and arm rest 13d is arranged on the side of the right lateral portion Id.

[0244] For the sake of brevity, arm rest 13d is described in more detail below, the two arm rests 13c, 13d being identical to each other.

[0245] Arm rest 13d comprises a tubular body 130 extending parallel to the T axis and a wing 131 extending from tubular body 130 radially with respect to the T axis (figure 9). Specifically, wing 131 has the function of supporting a user's arm and tubular body 130 has the function of connecting arm rest 13d to frame 2.

[0246] The tubular body 130 includes, in turn, a cylindrical hole 132 passing parallel to the T axis, which is apt to be engaged by the tubular element 10b. In detail, the cylindrical hole 132 is arranged coaxially to the T axis.

[0247] In the form of realization shown, considering a plane of section passing through the T axis, wing 131 has the shape of an isosceles trapezoid. In addition, wing 131 includes a flat surface 133, which extends parallel to the T axis.

[0248] Preferably, the supports 18 are arranged anterior to the arm rests 13c, 13d.

[0249] Also, as shown in the figures, the front wheels 3a are larger in diameter than the rear wheels 3b. In detail, the diameter of each wheel 3a, 3b is measured in a plane perpendicular to the axis of rotation A, B of the respective wheel 3a, 3b.

[0250] In more detail, the diameter of the rear 3b wheels is equal to the diameter of the front 3a wheels multiplied by a factor of 0.4 to 0.6. Preferably, the diameter of the rear 3b wheels is equal to half the diameter of the front 3a wheels.

[0251] Preferably, during a turning maneuver of vehicle 1, the front wheels 3 a are apt to rotate with respective opposite directions of rotation about their respective axes of rotation A.

[0252] Preferably, vehicle 1 also includes a wheel arch 45 for each front wheel 3a. The wheel arches 45 are movable parallel to direction Z with respect to the frame 2 solidly with the respective front wheel 3a. This allows the space envelope of vehicle 1 to be limited.

[0253] In addition, vehicle 1 includes four luminous devices 19 performing the function of headlights, indicator lights, sidelights and / or brake lights. In detail, two of the four luminous devices 19 are arranged at the front end la; the other two luminous devices 19 are arranged at the left later portion 1c and the right lateral portion Id, respectively (figure 1).

[0254] In further detail, the luminous devices 19 arranged at the front end la are positioned at the front body 25.

[0255] Preferably, the four luminous devices 19 are identical to each other.

[0256] In the illustrated embodiment form, the luminous devices 19 are circular in shape.

[0257] Vehicle 1 also includes a display 21 operatively connected to the electronic control unit 20 (figure 9).

[0258] The display 21 is apt to perform any or all of the following operations:

[0259] - show the charge level of the electric battery 7;

[0260] - show any notifications to the user;

[0261] - allow the vehicle 1 to be turned on, off, or locked.

[0262] In detail, the display 21 is attached to the tubular element 10g (figure 9).

[0263] In the embodiment form shown, the display 21 is rectangular in shape and faces the rear end lb.

[0264] Preferably, vehicle 1 also includes an acoustic signaling device 22 shown only schematically in figures 2 and 3.

[0265] The acoustic signaling device 22 is operatively connected to the electronic control unit 20 and includes, for example, a buzzer. The acoustic signaling device 22 is capable of emitting an acoustic signal, for example, when the vehicle 1 makes a movement in reverse, that is, in the direction opposite to the direction of the direction of advancement F.

[0266] Preferably, in addition, vehicle 1 is an autonomous and / or self-driving vehicle. To this end, vehicle 1 includes one or more of the following components operationally connected to the electronic control unit 20:

[0267] - one or more radars;

[0268] - one or more proximity sensors;

[0269] - one or more video cameras;

[0270] - one or more parking sensors; in a known manner, the electronic control unit 20 is configured to receive one or more information data from the component(s) listed above with which the vehicle 1 is equipped and to control the drive means 4 based on such information data(s). Vehicle 1 also includes a roof 15 ) removably couplable that can be removably coupled to frame 2 (figure 10).

[0271] The roof 15 includes, in turn, two tubular elements 16a and 16b and a covering 16c supported by the tubular elements 16a, 16b.

[0272] In detail, tubular element 16a is arranged on the side of the left lateral portion 1c; tubular element 16b is arranged on the side of the right lateral portion Id.

[0273] For brevity, only tubular element 16a will be described in the following, tubular elements 16a and 16b being identical to each other.

[0274] The tubular element 16a comprises:

[0275] - a section 160 extending parallel to the direction Z from the side of the front end la and suitable for attachment to the frame 2; and

[0276] - a section 161 extending parallel to the direction Z from the side of the rear end lb and also suitable for attachment to frame 2.

[0277] Sections 160 and 161 are spaced apart parallel to the direction X.

[0278] Tubular element 16a also includes:

[0279] - a section 162 extending parallel to the direction X between section 160 and section 161; and

[0280] - a section 163 extending between section 160 and section 162 parallel to the direction X and along a direction oblique to the direction X.

[0281] In detail, section 160 connects to frame 2 at tubular element 10a; section 160 connects to frame 2 at tubular element 10b.

[0282] Preferably, also, covering 16c is canvas.

[0283] The roof 15 also includes a transparent surface 16d extending between the tubular element 16a and the tubular element 16b from the side of the front end la. Therefore, the transparent surface 16d performs the function of a windshield.

[0284] For example, the transparent surface 16d is made of glass or plexiglas.

[0285] Preferably, the transparent surface 16d is removably coupled to the tubular elements 16a, 16b. In addition, the transparent surface 16d includes, in turn, a region 164 directed perpendicular to the direction X and a region 165 directed transverse to the region 164.

[0286] In detail, region 164 is aligned with sections 160 of tubular elements 16a, 16b parallel to the direction Z; region 165 is aligned with sections 163 of tubular elements 16a, 16b parallel to the direction Z.

[0287] In addition, region 165 is closer to covering 16c parallel to the direction Z than region 164.

[0288] Vehicle 1 includes, moreover, two tubular elements 16e, which are apt to enable the attachment of tubular elements 16a and 16b to frame 2, respectively. In detail, one of the two tubular elements 16e is engaged by tubular element 16a and tubular element 10a arranged on the side of set 30; the other of the two tubular elements 16e is engaged by tubular element 16b and tubular element 10a arranged on the side of set 31 (figure 11).

[0289] In further detail, tubular elements 16e are fitted around the two respective tubular elements 10a of vehicle 1 at their respective sections 102.

[0290] Preferably, tubular elements 16e are conformed similarly or identically to tubular elements lOe and lOf.

[0291] Figures 11, 12 and 13 illustrate tubular element 16e in enlarged scale.

[0292] Tubular element 16e comprises:

[0293] - a body 208 extending parallel to a direction K;

[0294] - a body 209 extending parallel to a direction J directed perpendicular to the direction K.

[0295] In detail, bodies 208 and 209 are arranged with each other to form a “T.”

[0296] Body 208 comprises, in turn:

[0297] - two ends 208a, 208b opposite each other parallel to the direction K; and - a cylindrical through hole 208c extending parallel to the direction K from end 208a to end 208b, that is, along the entile extension of body 208 parallel to the direction K.

[0298] Body 209 extends from body 208 at an intermediate portion between end 208a and end 208b parallel to the direction K and includes:

[0299] - an end 209a, at which it joins body 208;

[0300] - an end 209b opposite end 209b parallel to direction J; and

[0301] - a cylindrical hole 209c extending parallel to the direction J between end 209a and end 209b.

[0302] In detail, the cylindrical hole 209c is blind and extends along part of the extension of body 209 parallel to the direction J.

[0303] As shown in Figure 11, cylindrical hole 208c is engaged by tubular element 10a. In detail, cylindrical hole 208c is engaged by tubular element 10a from end 208a to end 208b. In contrast, cylindrical hole 209c is engaged by tubular element 16a or 16b.

[0304] Tubular element 16e also includes two ribs 210 of reinforcement that extend between body 208 and body 209.

[0305] Considering a plane identified by the directions J and K, the ribs 210 are triangular in shape.

[0306] In addition, the tubular element 16e includes (Figure 13): three seals 211, 212, 213;

[0307] - a seat 214 at the cylindrical hole 208c on the side of the end 208a and suitable for housing seal 211;

[0308] - a seat 215 at the cylindrical hole 208c on the side of the end 208b and suitable for housing seal 212; and

[0309] - a seat 216 at the cylindrical hole 209c and suitable for housing seal 213.

[0310] In the form of realization shown, considering a section plane passing through the direction K, seats 214 and 215 have a semicircular shape; similarly, considering a section plane passing through the direction J, seat 216 has a semicircular shape. Preferably, tubular element 16e comprises two semi-portions 220 and 221 coupled together to form bodies 208, 209 and cylindrical holes 208c and 209c (Figure 12).

[0311] In addition, tubular element 16e includes:

[0312] - two holes 222, 223 each passing through a respective rib 210; and

[0313] - two connecting elements 224, 225 each engaging a respective hole 222, 223.

[0314] Each hole 222, 223 is directed along respective directions perpendicular to the directions J and K through both semi-portions 220 and 221. In addition, connecting elements 224 and 225 are suitable for fixing the two semi-portions 220, 221 to each other.

[0315] For example, the connecting elements 224 and 225 include screws.

[0316] Preferably, in addition, the semi-portions 220 and 221 are identical to each other.

[0317] Vehicle 1 includes two additional tubular elements, not illustrated, also designed to enable the attachment of tubular elements 16a and 16b, respectively, to frame 2, specifically to tubular elements 10b. In detail, one of the two further tubular elements is engaged by the tubular element 16a and the tubular element 10b arranged on the side of the set 30; the other of the two further tubular elements is engaged by the tubular element 16b and the tubular element 10b arranged on the side of the set 31. Preferably, such further tubular elements are conformed similarly or identically to the tubular elements 16e.

[0318] In the form of realization shown, the length of vehicle 1 measured parallel to the direction X and when ramp 14 is in the raised position is between 1.4 m and 1.5 m. In detail, this length is between 1.45 m and 1.5 m.

[0319] In addition, the height of the vehicle 1 measured parallel to the direction Z with respect to the ground S when the roof 15 is not attached to the frame 2 is less than 1.1 m. In detail, this height is between 1.1 m and 1.0 m.

[0320] The height of vehicle 1 measured parallel to the direction Z relative to the ground S when roof 15 is attached to frame 2 is less than 2 m. In detail, this height is between 1.8 m and 2.0 m.

[0321] The width of vehicle 1 measured parallel to the direction Y, moreover, is between 0.9 m and 1 m. In detail, this width is between 0.9 and 0.95 m.

[0322] During assembly, each set 30, 31 is assembled by engaging the tubular elements 10a and 10b in the corresponding holes of the respective tubular element lOe and the tubular elements 10b, 10c, lOd in the corresponding holes of the respective tubular element lOf.

[0323] Sets 30 and 31 thus assembled are coupled to the pairs of attachments 36a, 36b and 36c. In detail, the two tubular elements 10a are engaged in the attachments pair 36a; the two tubular elements 10c are engaged in the attachments pair 36b; and the two tubular elements lOd are engaged in the attachments pair 36c.

[0324] In addition, set 32 is mounted between the two sets 30 and 31. In detail, tubular element 10g is coupled with tubular elements lOe of the two sets 30 and 31.

[0325] For the purpose of mounting roof 15 to frame 2, a tubular element 16e is fitted around the tubular element 10a arranged on the side of set 30, and another tubular element 16e is fitted around the tubular element 10a arranged on the side of set 31. Once the tubular elements 16e are fitted around the respective tubular elements 10a, the cylindrical hole 209c of each tubular element 16e is engaged by a respective tubular element 16a, 16b.

[0326] In detail, in order to mount a tubular element 16e to frame 2, its two semi-portions 220 and 221 are juxtaposed with each other so as to wrap a section of a tubular element 10a and fixed with each other by means of connecting elements 224, 224. In further detail, the two semi-portions 220 and 221 are juxtaposed with each other so that the holes 222, 223 at the two semi-portions 220 and 221 are aligned with each other and then the connecting elements 224, 225 are inserted into a respective hole 222, 223.

[0327] Upon completion of the assembly of tubular element 16e, tubular element 10a engages respective hole 208c and passes through it from end 208a to end 208b.

[0328] Similarly, the two further tubular elements are fitted around the tubular element 10b arranged on the side of set 30 and the tubular element 10b arranged on the side of set 31 and then respectively engaged by the tubular elements 16a, 16b.

[0329] Once tubular elements 16a, 16b and additional tubular elements are fitted to frame 2, covering 16c is fitted to tubular elements 16a, 16b.

[0330] In use, for the purpose of loading a wheelchair 50 onto the vehicle 1, the platform 5 is moved from the straight position to the tilted position and the ramp 14 is rotated from the raised position (Figure 2) to the lowered position until it comes into contact with the ground S (Figure 3).

[0331] At the end of the rotation, the first surface 14a of ramp 14 is opposite ground S and acts as a ramp for wheelchair 50 (Figure 3).

[0332] Once the wheelchair 50 is placed stably on the platform 5, the user can comfortably control the movement of the vehicle 1 relative to the ground S while remaining seated in the wheelchair 50.

[0333] During use, the user can operate one or both joysticks 11, 12 by resting on one or both arm rests 13c, 13d.

[0334] If the electric battery 7 is discharged, the vehicle 1 can be recharged after being electrically connected to the power supply, or the electric battery 7 can be removed from the compartment 8 to allow it to be charged outside the vehicle 1.

[0335] In case of rain or other adverse weather events, if the roof 15 is mounted to the frame 2, the covering 16c and transparent surface 16d protect the user from the weather.

[0336] From the above, the advantages of vehicle 1 and the mounting method according to the invention are obvious.

[0337] Since the frame 2 comprises tubular elements 10 removably coupled together, the vehicle 1 can be assembled and set up quickly and easily, thus being particularly cost-effective. At the same time, vehicle 1 could be easily disassembled. In particular, vehicle 1 could be sold as a kit.

[0338] In light of the characteristics of vehicle 1 described above, moreover, vehicle 1 would easily be suitable for use in rental or car-sharing systems. In detail, display 21 could be used to assist the user in the operations associated with renting or booking vehicle 1. Since vehicle 1 includes compartment 8, which is suitable for housing electric battery 7 in a removable manner, electric battery 7 can be recharged both when it is mounted in vehicle 1 and when it is removed from vehicle 1. Moreover, due to the fact that vehicle 1 is electric, it can be conveniently deployed in both indoor and outdoor spaces. Specifically, the small size of vehicle 1 allows it to be entered and transported inside elevators. For example, vehicle 1 could be used inside air terminals. Furthermore, since the electronic control unit 20 is configmed to control the drive means 4 such that the vehicle’s handling speed v and / or acceleration a are below the threshold values vo, ao, vehicle 1 can be maneuvered comfortably, avoiding unwanted acceleration and improving user comfort.

[0339] In addition, vehicle 1 can function as a medical device for transporting people with disabilities or reduced mobility. Since the arm rests 13c and 13d are rotatable with respect to their respective tubular elements 10, their angular position around the T axis is adjustable, and consequently vehicle 1 is comfortable and ergonomic.

[0340] Since vehicle 1 includes the two joysticks 11, 12 at the left lateral portion 1c and the right lateral portion Id, respectively, vehicle 1 can be comfortably driven by left- or right-handed people. The same considerations apply to the emergency buttons 17.

[0341] Since the front wheels 3a have a larger diameter than the rear wheels 3b, vehicle 1 can easily climb steps and overcome obstacles and / or architectural barriers. Since vehicle 1 includes roof 15, vehicle 1 can be used comfortably even during the cold season or during adverse weather events.

[0342] Since tubular elements lOe, lOf, 16e include the two semi-portions 120, 121, 220, 221, they can be conveniently fitted around other tubular elements already assembled. Finally, it becomes clear that modifications and variations can be made to the vehicle 1 and the assembly method according to the invention, which, however, do not fall outside the scope of protection defined by the claims.

[0343] Vehicle 1 could include a number of luminous devices 19 other than four. Specifically, vehicle 1 could include fewer than four luminous devices 19 or more than four luminous devices 19. For example, vehicle 1 could also include one or more luminous devices 19 at the rear end lb.

[0344] Vehicle 1 could also include one or more hooks for bags or sacks.

[0345] Vehicle 1 might not include the display 21 attached to frame 2, but a housing for a removable mobile device, such as a smartphone or tablet. Such a mobile device would perform the same functions as display 21. Vehicle 1 could include a single joystick 11, 12 or more than two joysticks 11, 12.

[0346] Vehicle 1 could include a control device other than a joystick 11, 12 or in addition to joystick 11, 12. For example, vehicle 1 could include one or more buttons, a joypad, one or more pedals, and / or a steering wheel.

[0347] Cylindrical holes 108c and 108d might not be blind, but through and form a single cylindrical through hole along the entire extension of body 108 parallel to the direction U. Cylindrical holes 109c and 209c might also be through and not blind. Tubular elements lOe and lOf could include more than two semi-portions 120, 121. Alternatively or additionally, tubular elements 16e could include more than two semi-portions 220, 221.

Claims

CLAIMS1. Vehicle (1) for transporting a wheelchair (50), which extends between a front end (la) and a rear end (lb) along a direction (X); said vehicle (1) comprising:- a frame (2);- a plurality of wheels (3a, 3b) rotatable with respect to said frame (2) about respective first rotation axes (A, B);- drive means (4) operatively connected to at least some of said wheels (3);- a platform (5) intended to support said wheelchair (50) in use;- a ramp (14) operatively connected to said platform (5) on the side of the rear end (lb) and rotatable with respect to said platform (5) about a rotation axis (D) orthogonal to said direction (X) between a raised position, in which said ramp (14) is spaced from the ground (S) and is positioned transversely to said platform (5), and a lowered position, in which said ramp (14) is in contact with the ground (S); wherein said ramp (14) comprises a first surface (14a), which is adapted to cooperate in contact with said wheelchair (50), and a second surface (14b), which is intended to contact the ground (S); characterized in that it comprises a plate (14c), which is connected to said ramp (14) and is movable between:- a first position, in which said plate (14c) is placed within the thickness of said ramp (14); and- a second position, in which said plate (14c) protrudes projectingly from said first surface (14a) towards the front end (la) of said vehicle (1) and is arranged transversely to said first surface (14a) so as to define a seating plane.

2. Vehicle (1) according to claim 1, characterized in that said plate (14c) in said first position is placed lying along said ramp (14).

3. Vehicle (1) according to claim 1 or 2, characterized in that said plate (14c) extends, along an extension direction (E), between a free edge (141) and an opposite constrained edge (142), which is rotatable about a guide axis (G) parallel to said rotation axis (D) and is slidably constrained to said ramp (14) along a movement direction (W) orthogonal to said rotation axis (D).

4. Vehicle (1) according to claim 3, characterized in that it comprises a support body (60), which extends between a first end (601), which is hinged to said ramp (14) about a first hinging axis parallel to said rotation axis (D), and a second end (602), which is hinged to said plate (14c) about a second hinging axis parallel to said first hinging axis.

5. Vehicle (1) according to any one of the preceding claims, characterized in that said ramp (14) is provided with an inner seat (146) provided with an opening (146') formed on said first surface (14a), in which inner seat (146) said plate (14c) in said first position is housed.

6. Vehicle (1) according to claims 4 and 5, characterized in that, with said plate (14c) in said first position, said support body (60) is positioned so as to close the opening (146') of said inner seat (146) and defines a corresponding area of said first surface (14a).

7. Vehicle (1) according to any one of the preceding claims, characterized in that said frame (2) comprises a plurality of tubular elements (10) releasably coupled to each other.

8. Vehicle (1) according to claim 7, characterized in that said plurality of tubular elements (10) comprises:- at least a first tubular element (10g, 10c);- at least a second tubular element (10b);- at least a third tubular element (10a, lOd); and- at least a fourth tubular element (lOe, lOf); each said fourth tubular element (lOe, lOf) comprising:- a first cylindrical hole (108c) extending parallel to a second direction (U);- a second cylindrical hole (108d) extending parallel to said second direction (U);- a third cylindrical hole (109c) extending parallel to a third direction (V);said third direction (V) being transverse to said second direction (U); said first cylindrical hole (108c) being engaged by said second tubular element (10b), said second cylindrical hole (108d) being engaged by said third tubular element (10a, lOd), and said third cylindrical hole (109c) being engaged by said first tubular element (10g, 10c).

9. Vehicle (1) according to any one of the preceding claims, comprising a roof (15) removably couplable to said frame (2); said roof (15) comprising a plurality of further tubular elements (16a, 16b, 16e) and a covering (16c) supported by at least some of said tubular elements (16a, 16b).

10. Vehicle (1) according to ary one of the preceding claims, characterized in that said platform (5) is tiltable around a rotation axis (C) orthogonal to said direction (X) and is rotatable between:- a straight position, in which said platform (5) is positioned perpendicularly to a direction (Z) orthogonal to said direction (X) and oriented vertically with respect to the ground (S) on which said vehicle (1) is intended to rest; and- a tilted position, in which, moving along said direction (X) from said front end (la) to said rear end (lb), the distance between said platform (5) and the ground (S) progressively decreases.

11. Vehicle (1) according to claim 10, characterized in that the tilt of said platform (5) in the tilted position with respect to the ground (S) and the tilt of said ramp (14) in the lowered position with respect to the ground (S) are substantially equal to each other.

12. Vehicle (1) according to claim 10 or 11, characterized in that: said ramp (14) extends along a direction of extension (P) between a constrained end (14’), which is pivotally constrained to said platform (5), and an opposite free end (14”); the first surface (14a) of said ramp (14) is provided with a greater portion (141a), which extends from the constrained end (14’) of said ramp (14); said platform (5) is provided with an abutment surface (51), on which said wheelchair (50) is intended to be placed; with said platform (5) in said tilted position and said ramp (14) in said lowered position, the abutment surface (51) of said platform (5) is coplanar with the greater portion (141a) of the first surface (14a) of said ramp (14).

13. Vehicle (1) according to any one of claims lO to 12, characterized in that said plurality of wheels (3a, 3b) comprises at least one front wheel (3a) and at least one rear wheel (3b), considering a direction of advancement (F) of said vehicle (1), and in that it comprises attitude variation means (70) mechanically connected to said platform (5) and arranged to move said platform (5) between said straight position and said tilted position; said attitude variation means (70) comprising:- at least one movable frame (701), which is placed as a connection between said platform (5) and at least one of said rear wheels (3b), is hinged to said platform (5) around a corresponding pivot pin (702), and rotatably carries at least one of said rear wheels (3b) mounted thereon;- at least one first actuator (703), which is mechanically connected to said platform (5) and to said at least one movable frame (701) and is actuatable to move said at least one movable frame (701) with respect to said at least one of said rear wheels (3b) and with respect to said platform (5) to move said platform (5) between said straight position and said tilted position.

14. Vehicle (1) according to claim 13, characterized in that said first actuator (703) is arranged to move said movable frame (701) between:- a first configuration, in which said pivot pin (702) is positioned at a first height and in which said movable frame (701) supports said platform (5) in said straight position;- a second configuration, in which said pivot pin (702) is positioned at a second height lower than said first height and in which said movable frame (701) supports said platform (5) in said tilted position.

15. Vehicle (1) according to claim 13 or 14, characterized in that said at least one movable frame (701) comprises:- a first rigid body (704), which is hinged to said platform (5) around the corresponding said pivot pin (702) and carries the corresponding said rear wheel (3b) mounted thereon;- a second rigid body (705), which is hinged to said platform (5) around the corresponding said pivot pin (702) and to which said at least one first actuator (703) is mechanically connected;- a connecting member (706), which is provided with a first end (706’) hinged to said first rigid body (704) and a second end (706”) hinged to said second rigid body (705); wherein said connecting member (706) comprises at least one rear suspension (707).

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