Water Sport Device

Abstract

A retaining device of a water sport device has a drive, which is preferably designed as an electromechanical or electropneumatic drive and via which the foil device can be transitioned from a resting and/or starting position into the operating position and/or from the operating position into the resting and/or starting position. The actuation can take place manually by a person operating the water sport device. The water sport device may already be lowered into knee-deep water near the shore or beach, for example, and guided or driven there in the direction of deeper water. As soon as sufficiently deep water has been reached, the foil device can be transitioned into the operating position, which is at a greater distance from the floating body, by means of the drive. This process can take place automatically when a specifiable or set water depth has been reached or by the release on the part of the person using the water sport device.

Claims

1. A water sport device comprising: a floating body; a foil device; a retaining device fastening the floating body to the foil device, wherein the retaining device has a drive via which the foil device can be transitioned from a resting and/or starting position into the operating position and/or from the operating position into the resting and/or starting position, in particular is retractable and extendable and/or foldable; wherein the foil device, which is arranged on a link of the retaining device, has one or more foils and can be transitioned from a resting and/or starting position into an operating position below the floating body via the retaining device, wherein, in the operating position and during a forward movement, the floating body can be transitioned into a position in which it is separated from the water surface due to uplift generated by the foil device.

2. The water sport device as claimed in claim 1, wherein the drive has an energy store.

3. The water sport device as claimed in claim 2, wherein the energy store has at least one spring and can be preloaded by means of a motor.

4. The water sport device as claimed in claim 3, wherein the drive has a gearing via which the motor of the drive is connected to the energy store.

5. The water sport device as claimed in claim 3, wherein at least in the actuated state, the spring is connected to the link of the retaining device in such a way that its force can be used at least partially to align the link.

6. The water sport device as claimed in claim 4, wherein the energy store can be preloaded in opposite directions by the motor and/or gearing.

7. The water sport device as claimed in claim 6, wherein the energy store has two springs that can be loaded.

8. The water sport device as claimed in claim 1, wherein the retaining device has a braking device which releases and/or brakes the displacement of the foil device.

9. The water sport device as claimed in claim 8, wherein the braking force is settable depending on the speed of the floating body.

10. The water sport device as claimed in claim 1, wherein the drive of the retaining device is arranged completely in a cutout in the floating body.

11. The water sport device as claimed in claim 1, wherein the retaining device has a further link which is pivotably mounted on or in the floating body at one end and pivotably arranged on the foil device at the other end.

12. The water sport device as claimed in claim 1, wherein one of at least three links is forcibly guided.

13. The water sport device as claimed in claim 4, wherein the motor, gearing, energy store, and/or a braking device are designed coaxially in particular with a pivot axis of the link.

14. The water sport device as claimed in claim 1, further including a propulsion device provided for the propulsion of the water sport device.

15. The water sport device as claimed in claim 14, wherein the propulsion device comprises at least one propulsion element designed as an impeller or propeller.

16. The water sport device as claimed in claim 1, further including at least one control unit designed to control the drive and/or the propulsion device.

17. The water sport device as claimed in claim 16, wherein the water sport device has at least one sensor from a group comprising gyro sensors, speed sensors, position sensors, distance sensors, infrared sensors, proximity sensors, depth sensors, and inclination sensors.

18. The water sport device as claimed in claim 17, wherein, for the purpose of geofencing, the control unit is designed to process the signals from the sensors.

19. The water sport device as claimed in claim 14, further including a propulsion energy store for the propulsion device, and a storage sensor for monitoring the propulsion energy store, wherein the water sport device is designed to reduce the power or to switch off the propulsion device on the basis of the signal from the storage sensor by means of the control unit.

20. The water sport device as claimed in claim 16, wherein the control unit is designed for communication with a control unit of a further propulsion device of the same or of a further water sport device.

21. The water sport device as claimed in claim 16, wherein the propulsion device and the control unit are designed for thrust control.

22. The water sport device as claimed in claim 15, further including a propulsion device which is provided for propelling the water sport device and whose propulsion motor, which is arranged on the floating body side, is connected in terms of drive to the propulsion element via an angularly movable propulsion train.

23. The water sport device as claimed in claim 16, wherein the control unit is designed to self-stabilize the water sport device by means of thrust vector control during the transition into the operating position and/or in the operating position.

24. The water sport device as claimed in claim 16, wherein the propulsion device has a pivotable propeller, at least one pivotable guide vane, and/or a plurality of nozzles pivotable in different directions.

25. The water sport device as claimed in claim 16, wherein a plurality of selectable travel profiles are stored in the control unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Reference is now made more particularly to the drawings, which illustrate the best presently known mode of carrying out the invention and wherein similar reference characters indicate the same parts throughout the views.

[0043] FIG. 1 shows the subject matter according to the invention in a side view

[0044] FIG. 2 shows the subject matter according to FIG. 1 in a perspective view from the bottom and a further operating position.

[0045] FIG. 3 shows the subject matter according to FIG. 1 in a resting and/or starting position.

[0046] FIG. 4a shows a schematic illustration of the construction of the subject matter according to the invention in a plan view.

[0047] FIG. 4b shows the subject matter according to 4a in a side view and a further position.

[0048] FIG. 5 shows a schematic, partially broken construction of the drive.

DETAILED DESCRIPTION OF THE DRAWINGS

[0049] Individual technical features of the exemplary embodiments described below can also lead to refinements according to the invention when combined with the features of the independent claim. Where expedient, functionally identical parts are denoted by identical reference signs.

[0050] A water sport device 2 has a floating body 4 designed as a floating board in the form of a surfboard. The water sport device can be pulled over a front fastening means 24 in the form of an eyelet. A foil device 6 is attached to the floating body by means of a retaining device 8. The retaining device 8 has a front link 10 and a rear link 11, via which the foil device 6 is fastened to the floating body 4 with its two foils 16. The foil device can be transitioned from the operating position shown in FIG. 1, in which the foil device 6 is spaced apart from the floating body 4, into a rearward position (FIG. 2), in which the foil device is closer to the floating body 4, by means of a drive 12 shown schematically in FIG. 2. This is an intermediate position on the way to the resting and operating position shown in FIG. 3, in which the foil device 6 is arranged close to the floating body.

[0051] The drive 12, which is partially shown in FIG. 2, can have, according to FIGS. 4a and 4b, an outer shaft with which an electric motor engages, which is arranged in a cylindrical housing 20 and on which a can be retracted into a floating body cutout 22 (not shown in more detail in FIG. 2) (cf. FIG. 2). Due to the cutout in the floating body, which can also be present in other exemplary embodiments of the invention, the foil device can pivot with its foils 16 close to the floating body 4. The links 10 and 11 of the retaining device are coupled to one another by a transverse linkage 24, resulting in the forced guidance shown by means of the circular arcs 26 describing the pivoting angle.

[0052] While the front link 10 is constructed in one piece, the rear link 11 is branched according to the illustrated embodiment and designed in the shape of a tuning fork, so that the front link 10 can pivot through the two parallel link sections 28 during the pivoting process. As a result, the link 10 is accommodated in the floating body 4.

[0053] An exemplary construction of a drive 12 is provided without the associated control unit with an electric motor 30, which is supplied with power by an energy store (also not shown) and whose motor shaft is on a gearing 32 arranged directly on the motor (FIG. 5). The motor is supplied via a supply line. The gearing 32, which is designed as a step-up gearing, is used to transmit a correspondingly large force to a mechanical energy store, which has a spring 34 designed as a torsion spring. In the present case, the force is transmitted via a shaft 36, on which a holder for the torsion spring 34 is arranged in a rotationally fixed manner. The torsion spring 34 is loaded against a rotary housing flange 40, which is releasably held in place by a brake disc 38 of an electromagnetically actuable braking device and which in turn is connected to the further hollow-cylindrical rotary housing 42. The latter can pivot about an axis 54. For example, a link 10 of the retaining device 8 can be fastened directly to the rotary housing 42. In the blocking position of the retaining device 8, the brake disc 38, which is firmly attached to a brake disc mount 48, is pressed against a rotary housing flange 40 by a spring element, preferably in the form of a disc spring 46, which is supported on the magnet mount 52, so that said flange cannot pivot about the axis 54 with the attached rotary housing 42. Actuation of the at least one electromagnet 44 in the form of an application of current leads to the generation of an attractive force and causes the brake disc 38 to be pulled away from the rotary housing flange 40. This releases the rotary housing 42, and the energy stored in the mechanical energy store causes the rotary housing to pivot about the axis 54. The speed at which the rotary housing 42 rotates or pivots can be adjusted by precisely setting the braking force, which can be varied by the electromagnet 44. When the attractive force is reduced and the electromagnet 44 is switched off, the disc spring 46 pushes the brake disc 38 with the brake disc mount 48 back in the direction of the rotary housing flange 40, which brakes it and thus the rotary housing 42 again until it comes to a standstill.

[0054] The internal brake disc 38 and the region of the electromagnet or electromagnets 44 with the associated magnet mount 52 are sealed off from the environment by means of seals 50. The entire device is particularly compact due to the integration of the electric motor in the energy store when the energy store is designed with a spring element, wherein the drive 12 is designed to be secure so that if the electromagnet is de-energized and switched off as a result, a movement of the links 10 fastened to the rotary housing 42 is automatically blocked and thus prevented.