DEVICE COMPRISING A LANCE AND A FLEXIBLE HOSE CONNECTED TO THE LANCE, THE DEVICE BEING INTENDED TO BE ATTACHED TO A DRONE AND BEING SPECIFICALLY CONFIGURED TO PREVENT THE FLEXIBLE HOSE FROM INTERFERING WITH THE LANDING OF THE DRONE

Description

DEVICE COMPRISING A LANCE SUITABLE FOR BEING ATTACHED TO A DRONE Field of invention This invention relates to the drone sector. In particular, the invention relates to a device comprising a lance through which a fluid, such as a washing liquid, can pass. The invention also relates to a drone equipped with said device. State of the art Drones are increasingly used for many purposes. A possible use of drones could concern the washing sector, for example for wash external surfaces of buildings. A drone for washing external surfaces of buildings can be equipped with a lance and with a flexible tube suitable for introducing liquid into the lance. The Applicant found that equipping a drone with a spear incurs in technical issues. Some problems are associated with the hose. In particular, the hose can interfere disadvantageously with the landing of the drone. In particular, the hose can make resistance on the surface of landing thus causing the drone to tilt forward and make the propellers hit the landing surface. Additionally, the hose can bend in a disadvantageous way, affecting negatively the flow of liquid. Another issue that has been encountered is that a unwanted rotation of the lance and hose connected to each other. There is therefore a need to resolve at least one of the aforementioned problems. Summary of the invention An object of the present invention is to provide a device provided with a lance and a flexible hose, the device being adapted to be fixed to a drone, the device being configured so that the hose does not interferes adversely with the landing of the drone. A particular object of the invention is to optimize the fluid flow in the tube. flexible. The present invention achieves at least one of these objects, and other objects that will be evident in the light of this description, by means of a device, according to claim 1, suitable for being fixed to a drone, in particular to at least two legs of a drone, the device comprising - a lance defining a longitudinal axis, through which a fluid can pass, in particular a liquid; the lance being in particular provided with a nozzle for the fluid leakage; - a flexible hose connected to the lance, to feed the fluid into the lance; - a component in which a first part of the flexible tube is arranged; wherein said component comprises a rear portion arranged above of the flexible tube to which a second part is attached by means of fastening means of the flexible tube which is external to said component; and wherein said rear portion of the component is inclined downwards with respect to to the said longitudinal axis. The invention also relates to a drone according to claim 10. Advantageously, the device allows you to connect a spear to a drone and a flexible hose, preventing the flexible hose from interfering disadvantageously with the drone landing. In fact, with the device according to the invention it is possible to arrange the tube in optimally in relation to the landing surface, especially with a inclination wide enough so that the hose does not interfere with the drone landing. In particular, in the vicinity of the drone, the hose may have an inclination with a sufficiently large angle to the landing surface causing it to upon landing the flexible tube does not oppose a force opposite to the weight of the drone in approach to the support surface (or landing surface). Furthermore, advantageously, the hose can be guided so as not to have excessive constriction or curvature, so as to avoid pressure losses concentrated and therefore allowing for optimal fluid flow, in particular a flow of optimal liquid. The device can preferably be configured to avoid rotations unwanted lance and hose connected together. Further features and advantages of the invention will become more apparent. evident in light of the detailed description of embodiments exemplary, but not exclusive. The dependent claims describe particular embodiments. of the invention. Brief description of the figures In the description of the invention, reference is made to the attached drawing tables, which are provided by way of example and not limitation, where: Fig. 1 shows a perspective view, particularly from below, of a drone equipped with of a device according to the invention; Fig. 2 shows a side view of the drone in Fig. 1; Fig. 3 shows a perspective view, particularly from below, of a device according to the invention; Fig. 4 shows a perspective view, particularly from above, of a device according to the invention; Fig. 5 illustrates a side view of a device according to the invention; Fig. 6 illustrates a schematic side view, with parts illustrated in exploded view, of parts of a device according to the invention; Fig. 7 illustrates a perspective view, with parts shown in exploded view, of parts of a device according to the invention; Fig. 8 illustrates a perspective view of a component of a device according to the invention. The same elements or components have the same reference number. Description of exemplary embodiments of the invention With reference to the Figures, embodiments are described exemplifying a device 1 suitable for being fixed to a drone 100, in particular to at least two legs 102a, 102b of a drone 100, and of a drone 100 equipped with such a device 1. In all embodiments, device 1 comprises - a lance 2 defining a longitudinal axis X, through which a can pass fluid, in particular a liquid; the lance 2 being in particular provided with a nozzle 21 for fluid release; - a flexible tube 4 connected to the lance 2, to introduce the fluid into the lance 2; - a component 13 in which a first part 41 (or first section) of the flexible tube 4; wherein said component 13 comprises a rear portion 133 disposed beyond above the flexible tube 4; wherein a second part 42 (or second section) of the flexible tube 4 is constrained, by means of fastening means 9, to said rear portion 133; in particular wherein said second part 42 (or second section) of the flexible tube 4 is external to said component 13; and wherein said rear portion 133 of component 13 is inclined downwards with respect to the said longitudinal axis X. Preferably, said rear portion 133 of component 13 is inclined downwards with respect to the said longitudinal axis X so as to form an angle β between 100° and 160°, preferably between 110° and 160°, with said axis longitudinal X. Extreme values ​​are preferably included. This angle β, in particular, is an angle pointing downwards, in particular towards the support surface (or landing surface) where the drone 100 rests. The aforementioned longitudinal axis X is in particular a rectilinear axis. In the case optional where the lance 2 has a terminal portion (including the nozzle 21) inclined with respect to the rest of the spear 2 (in other words inclined with respect to the portion main of the spear 2), the aforementioned longitudinal axis X is the rectilinear axis of the straight part (or main part) of the spear 2. Said rear portion 133 of component 13 has in particular a surface lower part 133a arranged above the flexible tube 4; and said second part 42 of the flexible tube 4 is secured, by means of said fastening means 9, to said surface lower 133a. Said lower surface 133a of the rear portion 133 of the component 13 is inclined downwards with respect to the said longitudinal axis X, in particular in a to form said angle β between approximately 100° and 160°, preferably between 110 and 160°, with said longitudinal axis X. The extreme values ​​are preferably included. Said second part 42 of the flexible tube 4 is, in particular, concave towards the Bass. Preferably, said second part 42 of the flexible tube 4 has a radius of curvature between approximately 17.2 (for example when the angle β is equal to 100°) and approximately 12.2 mm (e.g. when the angle β is equal to 160°). Preferably, said component 13 is provided with at least one seat 134a, 134b for the flexible tube 4, said at least one seat 134a, 134b being configured in so that said first part 41 of the flexible tube 4 is arranged inside the component 13 so as to be coaxial with the longitudinal axis X of the spear 2. In particular, said at least one seat 134a, 134b is delimited by a surface cylindrical, which in particular extends around said longitudinal axis X or around an axis parallel to the said longitudinal axis X. Component 13, in particular, comprises an upper part 137a and a lower part 137b, fixed together, between which the flexible tube 4 is arranged, in particular between which said first part 41 of the flexible tube 4 is arranged. The upper portion 137a comprises said rear portion 133 of the component 13. The aforementioned fastening means 9 (which secure the tube 4 to the component 13), preferably include or consist of at least one band. The above first part 41 (or first section) and second part 42 (or second section) of the flexible hose 4 are in particular longitudinal parts or sections of the flexible hose 4. The flexible hose 4 is preferably made of material comprising plastic thermoplastic, preferably thermoplastic polyester. For example, flexible hose 4 comprises an (outer) layer of polyurethane and an (inner) layer of polyester thermoplastic between which one or more layers of synthetic fibre are arranged. Said first part 41 of the flexible tube 4 comprises the end 40 of the tube flexible hose 4 connected to the lance 2; and / or said second part 42 of the flexible hose 4 is below said rear portion 133 of component 13, and in particular at least partially in correspondence with said rear portion 133. The flexible hose 4 and the lance 2 are connected (i.e. fixed) to each other by means of connecting means comprising at least one portion with a polygonal cross-section 5, preferably hexagonal, for example by means of at least one hexagonal nut. Preferably, said component 13 comprises a seat 135a, 135b having the same shape as said polygonal section portion 5, in which said portion is arranged polygonal section portion 5, in particular so as to avoid rotations of the launches 2 around its longitudinal axis X. In particular, the shape of said seat 135a, 135b is such that it prevents the rotation of said section portion polygonal 5. Component 13, in particular, comprises a part 137 which comprises, or is made up of the aforementioned upper part 137a and lower part 137b. Component 13 is specifically configured to be attached to legs 102a, 120b of the 100 drone. Preferably, component 13 comprises two parts 138, 139 (Fig. 4), each of which is suitable to be fixed to a respective leg 102a, 102b of the drone 1 by means of fixing means. Said fixing means preferably include at least one screw (preferably Allen) and preferably at least a threaded insert (preferably blind). The aforementioned part 137, in particular, is arranged between the two parts 138, 139. Preferably, each part 138, 139 comprises a respective front body 138a, 139a and a respective rear body 138b, 139b, fixed together. The body front 138a, 139a and rear body 138b, 139b define a seat 1380, 1390 for a respective leg 102a, 102b of the drone 100. Advantageously, component 13 can be fixed substantially to any drone with legs, as component 13 can be adapted on the legs of any type of drone. Preferably, the component 13 comprises a tubular body 131 fixed to the two parts 138, 139, In ​​particular, the tubular body 131 extends between the two parts 138, 139. The tubular body 131 is preferably fixed to the aforementioned part 137. In particular, the tubular body 131 is preferably arranged in the aforementioned part 137. Preferably, the tubular body 131 is provided with a seat where a longitudinal portion of the tube 4, in particular a longitudinal portion of the first part 41 of tube 4. This seat is for example a notch in the tubular body 131. This seat, in particular, can help to hold the first part 41 of the tube 4 so that it is coaxial with the longitudinal axis X of the lance 2. Preferably, the tubular body 131 extends orthogonally to the axis longitudinal X of the spear 2. Advantageously, the two parts 138, 139 can essentially act as a template for the positioning of the tubular body 131, which can thus be positioned at a predetermined and repeatable height. Preferably, the device 1 comprises a component 11 fixed to the lance 2 in a distal position from the nozzle 21; and a component 12 fixed to the lance 2 in proximal position with respect to the nozzle 21, in particular where the component 11 and the component 12 are distinct from each other. The device 1 preferably further comprises a cable 3 connected to said component 11 and said component 12, in particular so as to reduce possible oscillations of the terminal part of the lance 2 equipped with the nozzle 21. Preferably, component 11 is configured to be attached to body 101 of the drone 100 from which the legs 102a, 120b of the drone 100 extend. Component 11 can be attached to drone 100, for example, using screws. Preferably, the first component 11 comprises elastic means suitable for damping any stress, in particular a water hammer and / or a stress generated by the pressurized fluid flowing through lance 2, which can be transmitted from the launcher 2 to the drone 100 when the device 1 is attached to the drone 100, particularly when component 11 is attached to drone 100. The invention also concerns a drone 100, in particular for washing external surfaces of buildings (e.g. windows or glass), including a device 1. In particular, device 1 is attached to drone 100.

Claims

1. Device (1) suitable for being fixed to a drone (100), in particular to at least two legs (102a, 102b) of a drone (100), the device (100) comprising - a spear (2) defining a longitudinal axis (X), through which a fluid, in particular a liquid; the lance (2) being in particular provided with a nozzle (21) for fluid release; - a flexible tube (4) connected to the lance (2), to introduce the fluid into the lance (2); - a component (13) in which a first part (41) of the flexible tube is arranged (4); wherein said component (13) comprises a rear portion (133) arranged at the above the flexible tube (4); wherein a second part (42) of the flexible tube (4) is constrained, by means of fixing (9), to said rear portion (133); in particular wherein said second part (42) of the flexible tube (4) is external to said component (13); and wherein said rear portion (133) of the component (13) is inclined towards the low with respect to the said longitudinal axis (X).

2. Device (1) according to claim 1, wherein said rear portion (133) of the component (13) is inclined downwards with respect to the said longitudinal axis (X) so as to form an angle (β) between approximately 100° and 160°, preferably between approximately 110° and 160°, with the said longitudinal axis (X).

3. Device (1) according to claim 1 or 2, wherein said component (13) is provided with at least one seat (134a, 134b) for the flexible tube (4), called at least a seat (134a, 134b) being configured so that said first part (41) of the flexible tube (4) is arranged inside the component (13) so as to be coaxial with the longitudinal axis (X) of the lance (2); in particular where said at least one seat (134a, 134b) is delimited by a cylindrical surface.

4. Device (1) according to any of the preceding claims, wherein said component (13) comprises an upper part (137a) and a lower part (137b); wherein said upper portion (131) comprises said rear portion (133) of the component (13).

5. Device (1) according to any of the preceding claims, wherein said first part (41) of the flexible tube (4) includes the end (40) of the flexible tube connected to the lance (2) and / or in which said second part (42) of the flexible tube (4) is below the said posterior portion (133), and in particular at least partially in correspondence with said rear portion (133).

6. Device (1) according to any of the preceding claims, wherein the tube flexible (4) and the lance (2) are connected to each other by means of connecting means which they comprise a portion with a polygonal section (5), preferably hexagonal; and wherein said component (13) comprises a seat (135a, 135b) having the same shape of said polygonal section portion (5), in which said portion is arranged polygonal section portion (5), in particular so as to avoid rotations of the launch (2) around its longitudinal axis (X).

7. Device (1) according to any of the preceding claims, wherein said component (13) is configured to be attached to the legs (102a, 120b) of the drone (100).

8. Device (1) according to any of the preceding claims, wherein said rear portion (133) of component (13) has a lower surface (133a) arranged above the flexible tube (4); wherein said second part (42) of the tube flexible (4) is constrained, by means of said fixing means (9), to said surface lower (133a); wherein said lower surface (133a) of the rear portion (133) of the component (13) is inclined downwards with respect to said longitudinal axis (X), in particular so as to form an angle (β) between approximately 100° and 160°, preferably between approximately 110° and 160°, with said longitudinal axis (X).

9. Device (1) according to any of the preceding claims, wherein said second part (42) of the flexible tube (4) has a curvature radius between approximately 17.2 and 12.2 mm; in particular where said second part (42) of the flexible tube (4) is concave downwards.

10. Drone (100), in particular for washing external surfaces of buildings, comprising a device (1) according to any of the claims previous ones.