SURFBOARD WITH CARRIER FOR COMPONENTS OF A JET DRIVE

Abstract

The invention relates to a surfboard having a hull (22) and a jet drive (2) arranged in the hull (22) and a battery arranged in the hull (22) for the jet drive (2), wherein the jet drive (2) is mounted on a carrier (17) and the carrier (17) can be releasably fastened to the hull (22) by fastening means and can be removed from the hull (22) together with the jet drive (2) after the release of the fastening means.

Claims

1. A Surfboard comprising: a hull (22) and a jet drive (2) arranged in the hull (22), characterised in that the jet drive (2) is mounted on a carrier (17) and the carrier (17) can be releasably fastened to the hull (22) by fastening means and can be removed from the hull (22) together with the jet drive (2) after the release of the fastening means, and after the removal of the carrier (17) from the hull (22) the jet drive (2) is arranged freely accessibly on the carrier (17).

2. Surfboard according to claim 1, characterised in that the carrier (17) has a base panel on which the jet drive (2) is mounted.

3. Surfboard according to claim 1, characterised in that a battery for the jet drive (2) is arranged in the hull (22) and the battery is arranged separately from the carrier (17) in the surfboard (1) and is not removable together with the carrier (17).

4. Surfboard according to claim 1, characterised in that the hull (22) has a recess (20) on the underside of the hull, and the carrier is inserted into the recess (20) and forms a planar surface with an outer skin of the surfboard (1).

5. Surfboard according to claim 1, characterised in that a jet tube (7), a rotor, a motor (12), a controller (14) and a converter (16) are mounted on the carrier (17).

6. Surfboard according to claim 1, characterised in that the carrier (17) has a planar base panel (40) with an opening for a water inlet (4) and an end face (8) projecting from the edge of the base panel at the stern end with an opening for a water outlet (9).

7. Surfboard according to claim 1, characterised in that an inlet of the jet tube (7) is connected to the water inlet (4) and an outlet of the jet tube (7) is connected to the water outlet (9).

8. Surfboard according to claim 1, characterised in that the carrier (17) with components mounted thereon is set into the recess (20) in the hull (22) of the surfboard (1), and an underside of the carrier (17) forms a planar surface with an underwater surface (6) of the hull (22).

9. Surfboard according to claim 1, characterised in that the hull (22) has an inflatable hull component.

10. Surfboard according to claim 1, characterised in that the carrier (17) with components mounted thereon is part of a drive unit which can be inserted into the recess (20) at the stern end of a hull component.

Description

[0024] The invention is described with reference to an embodiment in four figures. In the drawings:

[0025] FIG. 1 shows a view through a surfboard according to invention with a carrier,

[0026] FIG. 2 shows a view from below of the surfboard in FIG. 1,

[0027] FIG. 3 shows a perspective view of a carrier according to the invention with components,

[0028] FIG. 4 shows an exploded view of the carrier with components removed.

[0029] In principle, a surfboard is to be understood as a device on which the surfer 1 stands, kneels or sits and which floats on water and advantageously has sufficient buoyancy to support the surfer. The buoyancy together with the forward propulsion provided to the surfboard 1 by a jet drive 2 should at least be sufficient so that the surfboard 1 moves over the water.

[0030] The surfboard 1 usually has no sail. In order that the surfer on the surfboard 1 can keep his balance more easily, in a variant of an embodiment a cord can extend from the bow end of the surfboard 1 and is advantageously provided with a handle which the surfer can additionally hold onto.

[0031] The surfboard 1 has the jet drive at the stern 3. The jet drive 2 comprises an opening towards the water inlet 4 in an underwater surface 6 of the surfboard 1 and a jet tube 7 with a water outlet 9 arranged on an end face 8 of the stern 3. The water outlet 9 is usually designed as a nozzle which, where appropriate, is pivotably rotatable about an axis of rotation arranged vertically with respect to a deck 11. In the jet tube 7 a rotor (not shown) is arranged, by which the water sucked into the jet tube 7 is sprayed out of the nozzle, thereby providing propulsion for the surfer with the surfboard 1. A motor 12 is arranged along a drive train 13 behind the rotor in the surfboard 1. The motor 12 drives the rotor. A controller 14 for the motor 12 is provided, by which the output of the motor 12 can be controlled; in particular the speed of the surfboard 1 can be controlled thereby. The controller 14 may be controllable for example by means of a wireless remote control which the surfer holds in his hand. Both the motor 12 and also the controller 14 are supplied with power by means of a battery (not shown). A converter 16 converts the direct current provided by the battery into alternating current. For this purpose the motor 12 is designed as an electric motor.

[0032] The surfboard 1 according to the invention has a carrier 17 on which are provided the jet tube 7, the motor 12 with the drive train 13 and the propeller which is arranged rotatably in the jet tube 7, as well as the controller 14 and the converter 16. A controller 14 is generally understood here as the electronic system on a main board which inter alia regulates the output of the motor 12, but for example also possibly acts upon the position of the nozzle with control signals.

[0033] The carrier 17 with the components of the jet drive 2 is set into a recess 20 at the stern end of the surfboard 1. The surfboard 1 is designed here with a permanently firm hull 22 made from a plastic coating and having a foam core. The plastic coating can be a laminate coating over the entire surface. The surfboard 1 has the recess 20 on an underwater surface 6 into which the carrier 17 fits in a positively locking manner, so that a planar surface forms over the entire underwater surface 6 which forms no groove or only a hardly perceptible, approximately U-shaped peripheral groove 21 between the hull 11 and the base panel 40 of the jet carrier 17.

[0034] The deck 11 is formed completely and continuously over an upper face of the board. The recess 20 is formed merely on the underwater surface 6 and on the end face 8 of the stern 3 of the surfboard 1.

[0035] FIG. 2 shows the surfboard 1 in a view from below, which shows the U-shaped recess 20 in the hull 22 of the surfboard 1, into which the carrier 17 with the water inlet 4 is inserted. The underwater surface 6 has a planar configuration after the introduction of the carrier 17 with the base panel 40. Likewise, the end face 8 of the stern 3 of the surfboard 1 has a planar configuration.

[0036] FIG. 3 shows the carrier 17 with the base panel 40 and the front face 8 of the stern, wherein the base panel 40 includes the opening for the water inlet 4 and the end face 8 of the stern 3 includes the opening for the water outlet 9. The same reference numerals designate the same components as in FIG. 1. The jet tube 7 is dimensioned so that it fits precisely between the water inlet 4 and the water outlet 9 and forms a water-conveying connection between the water inlet 4 and the water outlet 9.

[0037] In the jet tube 7 a rotor (not illustrated here) is provided which draws in the water entering the jet tube 7 and accelerates it and sprays it out rearwards, in order to provide the surfboard 1 with propulsion. The rotor is connected to the motor 12 by means of a drive train 13 which in turn is supplied with power via a battery (not shown). The controller 14 which is arranged on a main board is illustrated schematically.

[0038] The components are encapsulated individually in a watertight manner, in so far as this is necessary for them to function; in particular the motor 12 as well as the converter 16 and the controller 14 are encapsulated in a watertight manner.

[0039] The substrate 17 can be removed from the recess 20 after opening of fastening means such as clamping screws or the like. During removal at least the jet tube 7, the motor 12, the converter 16 and the controller 14 remain on the base panel 40 of the carrier 17 and are removed with it. If required, the individual components can be repaired or replaced, or the entire carrier 17 including all components can be replaced by a new carrier 17 including new components. The connectors for the battery are disconnected when the carrier 17 is removed, and the battery is not connected to the carrier 17.

[0040] FIG. 4 shows the jet drive 2 in a schematic dismantled view. The carrier 17 has the base panel 40 as well as the end face 8 of the stern 3. The end face 8 of the stern 3 is arranged on a stern edge of the base panel 40 and is connected to the base panel 40 for example by means of side walls or reinforcing brackets 41.

LIST OF REFERENCE NUMERALS

[0041] 1 surfboard [0042] 2 jet drive [0043] 3 stern [0044] 4 water inlet [0045] 6 underwater surface [0046] 7 jet tube [0047] 8 end face [0048] 9 water outlet [0049] 11 deck [0050] 12 motor [0051] 13 drive train [0052] 14 controller [0053] 16 converter [0054] 17 carrier [0055] 20 recess [0056] 21 groove [0057] 22 hull [0058] 40 base panel [0059] 41 reinforcing bracket