EP3526112B1 - Surfboard mit jetantrieb - Google Patents

Surfboard mit jetantrieb Download PDF

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Publication number
EP3526112B1
EP3526112B1 EP18829845.9A EP18829845A EP3526112B1 EP 3526112 B1 EP3526112 B1 EP 3526112B1 EP 18829845 A EP18829845 A EP 18829845A EP 3526112 B1 EP3526112 B1 EP 3526112B1
Authority
EP
European Patent Office
Prior art keywords
opening
nozzle
jet
surfboard
base panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18829845.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3526112A1 (de
Inventor
Nicolai WEISENBURGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WBV Weisenburger Bau Verwaltung GmbH
Original Assignee
WBV Weisenburger Bau Verwaltung GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WBV Weisenburger Bau Verwaltung GmbH filed Critical WBV Weisenburger Bau Verwaltung GmbH
Priority to HRP20220443TT priority Critical patent/HRP20220443T1/hr
Publication of EP3526112A1 publication Critical patent/EP3526112A1/de
Application granted granted Critical
Publication of EP3526112B1 publication Critical patent/EP3526112B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/10—Motor-propelled water sports boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B63H2011/081—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction

Definitions

  • the invention relates to a surfboard with a hull, with an underwater surface and a water inlet opening in the underwater surface and with a jet drive with a water channel from the water inlet opening to a water outlet opening arranged in a rear end face.
  • the surfboard according to the invention has an electric drive.
  • a surfboard is revealed.
  • a jet engine is mounted on a bottom plate that is inserted into an underwater surface of the surfboard from below.
  • a cooling system for a jet engine is disclosed.
  • the jet drive is screwed into a recess in the fuselage.
  • JP 2002 193185 A discloses a surfboard powered by an internal combustion engine.
  • Surfboards with an electric drive are, for example, from the DE 20 2011 051 071 known. Powered surfboards are not dependent on high waves, but they can also be used in windless waters with little surf.
  • the electric drive of the known surfboard is supplied with power via an accumulator arranged in the surfboard.
  • a jet tube between the water inlet and water outlet is designed as an aluminum component.
  • the underwater surface and the rear face are usually plastic components.
  • the known jet drive has the disadvantage that it is relatively expensive to produce and to use the material, and on the other hand the water inlet of the jet drive is designed in an unfavorable manner in terms of flow technology.
  • the object is achieved by a surfboard with the features of claim 1 mentioned at the outset.
  • Underwater surface is formed in one piece and to which a jet tube is connected at one end, the other end of which is connected to the water outlet opening.
  • one end of the jet tube is not placed directly onto the water inlet opening, but the water inlet opening is followed by a socket which is integrally formed with the underwater surface of the hull in the area of the water inlet opening and protrudes into the hull.
  • the socket is preferably made of the same material as the underwater surface. The material cost of this material is advantageously lower than that of the jet tube.
  • the stub can transition from the underwater surface into the hull in a one-piece manner as an injection molded component or laminate component.
  • the socket has a connection opening, which can preferably be flat. It can have an approximately elliptical, oval or circular connection cross-section.
  • One end of the jet pipe is connected to the connection opening.
  • the other end of the jet tube is connected to the water outlet opening, which can be designed as a nozzle.
  • connection opening can preferably touch the base plate.
  • no bulge is formed between the socket and the inner wall of the base plate.
  • At least the base plate and the socket can therefore be produced in one piece as a component with an injection molding tool.
  • the transition between the water inlet opening and the jet tube which is developed according to the invention compared to the prior art, creates a softer, smoother transition between the underwater surface and the water channel, which is more favorable in terms of flow.
  • the water inlet opening can be made significantly longer in the direction of the bow than in the prior art, without additional material costs arising for a longer jet tube component.
  • their extent in the longitudinal direction can be four, five or even six times the maximum width of the water inlet opening in the plane of the underwater surface.
  • the transition from the underwater surface into the socket can have a significantly smaller angle, that is to say flatter than in the prior art.
  • the socket is designed in a cost-effective manner as a plastic component.
  • the relatively expensive jet tube is formed of aluminum, and since the nozzle may have a circular or elliptical port opening, the jet tube can be easily formed as a bent tube with both ends cut off at a certain angle are, be educated. An additional deformation of one end of the jet pipe is no longer necessary.
  • the jet drive is designed as an electric drive that is powered by a battery.
  • the battery can be replaceable.
  • the electric drive drives a shaft with an impeller of the jet drive.
  • the jet drive preferably comprises a base plate and an end face which are connected to one another in a fixed position, and the connecting piece is connected in one piece to the base plate and protrudes from the base plate on the inside of the fuselage.
  • the socket can be designed as a passage in an internal elevation.
  • the elevation can be prismatic with an obtuse triangle as the lateral cross-sectional area.
  • a base plate is provided, from which the socket according to the invention protrudes on the inside of the fuselage, and in addition, on a rear edge of the base plate, an end face is connected in one piece to the base plate, which preferably lateral stabilizing walls are connected to the base plate and the end face at their edges.
  • the open box can be made in one piece. This production is particularly inexpensive.
  • the plastic part of the jet propulsion can of course also be made in one piece with the hull of the surfboard, or with a propulsion unit that is part of the surfboard.
  • the jet tube is preferably designed as an aluminum tube, which is adapted in its length and curvature so that it fits between the water outlet and the connection opening of the socket.
  • a watertight connection is provided there, for example in the form of a plug connection, screw connection or by means of toggle lever mechanisms or the like.
  • the jet tube has an additional lateral, bow-side opening through which the drive train for a rotor is routed.
  • the rotor is driven by an electric motor and a drive train.
  • a rotor can be an impeller or a propeller or similar.
  • a shaft of the drive is guided through a jet pipe wall and the impeller is arranged in the jet pipe.
  • a surfboard 1 shows a surfboard 1 according to the invention.
  • a surfboard 1 is to be understood here as a device on which the surfer stands, sits or kneels, and which floats on water and which advantageously has buoyancy sufficient to carry the surfer. At least the buoyancy together with the thrust that a jet drive 4 imparts to the surfboard 1 should be sufficient for the surfboard 1 to float above the water.
  • the surfboard 1 has no sail. In German usage, the sport would be classified as surfing.
  • the surfboard 1 has a bow 2 and a stern 3 .
  • a jet drive 4 is housed in the rear 3 .
  • the jet drive 4 is only shown schematically here.
  • the jet drive 4 comprises a water inlet opening 6 in an underwater surface of the surfboard 1 and a jet pipe 7 with a water outlet opening 8 arranged on a front side 21 of the stern 3.
  • the water outlet opening 8 can be designed as a nozzle, which can be pivoted about a step surface 9 arranged vertically if necessary Axis of rotation is rotatable.
  • a rotor (not shown) is arranged in the jet pipe 7, which sucks water into the jet pipe 7 and sprays it out of the nozzle, thus giving the surfer with the surfboard 1 propulsion.
  • a motor (not shown) for the rotor is also arranged in a hull 11 of the surfboard 1, which drives the rotor via a drive train (not shown), as well as a controller (not shown) for the motor, with which a power of the motor can be controlled. In particular, the speed of the surfboard 1 can be controlled with it. Both the motor and the controller are powered by an accumulator (not shown).
  • the surfboard 1 is designed here with the fixed hull 11 .
  • the hull 11 has, for example, a foam-containing core which is completely surrounded on the outside with laminate layers.
  • the jet drive 4 includes a base plate here 20 and an end face 21 and a socket 22 which protrudes from the inside of the base plate 20 and the jet tube 7 which connects the socket 22 to the water outlet opening 8 .
  • the socket 22 forms a transition between the water inlet opening 6 on the underwater surface and one end of the jet pipe 7. Another end of the jet pipe 7 is connected to the water outlet opening 8.
  • the 2 shows the jet drive 4 without rotor, motor and accumulator in a perspective view. From jet propulsion 4 is in the 2 only the base plate 20, the end face 21, the water inlet opening 6 and the jet pipe 7 with the water outlet opening 8 are shown.
  • the water inlet opening is placed in a plane with the base plate 20 or in the base plate 20, with the base plate 20 forming part of the underwater surface of the surfboard 1.
  • the main part of the underwater surface 5 is formed by a laminate outer surface of the hull 11.
  • the base plate 20 of the jet drive 4 forms a unit with the underwater surface 5 or at least a form-fitting unit.
  • the bottom plate 20 is pulled up inwards in the form of a socket.
  • the bottom plate 20 and the socket 22 are integrally formed in one piece. You can be a single injection molded part.
  • the end face 21 is provided, which is arranged on the rear edge of the base plate 20, as well as lateral stabilizing walls 23, which are here, for example, each triangular.
  • the two stabilizing walls 23, the end face 21 and the base plate 20 with the socket 22 are formed as a one-piece injection molded part or laminate component.
  • the connecting piece 22 with the base plate 20 it is possible to design the transition between an underwater surface 5 and the jet tube 7 through the water inlet opening 6 in a particularly favorable manner in terms of flow technology.
  • the bow-side end of the water inlet opening 6 can be pulled particularly far towards the bow 2, so that not only is an almost circular or largely oval or elliptical water inlet cross-section formed, but the water inlet opening 6 is formed, which is greatly extended towards the bow 2 of the surfboard 1.
  • the maximum length of the water inlet opening 6 can, for example, be three to four or five times greater than the maximum width of the water inlet opening 6.
  • the connecting piece 22 has a connection opening 27 on the inside, which is circular or elliptical, for example, and on which one end of the jet tube is connected 7 is arranged.
  • a bottom portion 24 of a terminal opening edge preferably touches the bottom plate 20, or is preferably spaced from it by a few millimeters, preferably more than 2, 3, 4 mm or more than 1 cm.
  • the geometry is chosen so that the production of the base plate 20 and the socket 22 is possible with a single injection molding tool.
  • a bottom portion 26 of the port opening edge is between the water inlet port 6 and a Level formed, which protrudes from the bottom portion 24 of the terminal opening edge perpendicular to the bottom plate 20 in the fuselage interior.
  • the bottom-side section 26 of the opening edge is spaced from the water inlet opening 6, preferably at least 5 mm, preferably at least 1 cm, 2 cm, 3 cm.
  • the bottom section 26 can also be arranged between the plane and another plane which protrudes perpendicularly into the interior of the hull from the opposite edge of the water inlet opening 6 .
  • the opposite edge of the water inlet port 6 faces the bottom portion.
  • the base plate 20 and the socket 22 and also the other plastic components can also be designed as 3D printing or CNC-milled components.
  • the jet pipe 7 is attached to the connection opening 27 of the connecting piece 22 .
  • the jet pipe 7 can, for example, be clamped, screwed on or inserted or glued into a circumferential groove.
  • Another end of the jet tube 7 is also connected to the water outlet opening 8 of the end face 21 by a screw or clamp connection or otherwise, preferably in a detachable manner.
  • the jet tube 7 is a complete aluminum component, while the base plate 20, the lateral stabilizing walls 23 and the end face 21 and the socket 22 are a laminate component or an injection-molded component, ie a plastic component, or a fiber-reinforced plastic component.
  • the nozzle 22 is in the 1 , 2 and 3 as a triangular elevation in longitudinal section, in which a piece of a water channel is introduced.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hydraulic Turbines (AREA)
  • Toys (AREA)
  • Endoscopes (AREA)
EP18829845.9A 2017-12-21 2018-12-20 Surfboard mit jetantrieb Active EP3526112B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20220443TT HRP20220443T1 (hr) 2017-12-21 2018-12-20 Daska za surfanje s mlaznim pogonom

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017130963.2A DE102017130963A1 (de) 2017-12-21 2017-12-21 Surfboard mit jetantrieb
PCT/EP2018/086275 WO2019122176A1 (de) 2017-12-21 2018-12-20 Surfboard mit jetantrieb

Publications (2)

Publication Number Publication Date
EP3526112A1 EP3526112A1 (de) 2019-08-21
EP3526112B1 true EP3526112B1 (de) 2022-01-12

Family

ID=64949284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18829845.9A Active EP3526112B1 (de) 2017-12-21 2018-12-20 Surfboard mit jetantrieb

Country Status (5)

Country Link
EP (1) EP3526112B1 (es)
DE (1) DE102017130963A1 (es)
ES (1) ES2910260T3 (es)
HR (1) HRP20220443T1 (es)
WO (1) WO2019122176A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10597118B2 (en) 2016-09-12 2020-03-24 Kai Concepts, LLC Watercraft device with hydrofoil and electric propeller system
US11897583B2 (en) 2020-04-22 2024-02-13 Kai Concepts, LLC Watercraft device with hydrofoil and electric propulsion system
US10946939B1 (en) 2020-04-22 2021-03-16 Kai Concepts, LLC Watercraft having a waterproof container and a waterproof electrical connector
US11485457B1 (en) 2021-06-14 2022-11-01 Kai Concepts, LLC Hydrojet propulsion system
US11878775B2 (en) 2021-07-13 2024-01-23 Kai Concepts, LLC Leash system and methods of use

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807152A (en) * 1996-02-06 1998-09-15 Wojcik; Warren Surfboard and method of making same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262413A (en) * 1964-09-22 1966-07-26 Bloomingdale Motorized surfboard
JP2002193185A (ja) * 2000-10-18 2002-07-10 Yamaha Motor Co Ltd エンジン付サーフボード
US7731553B2 (en) * 2007-10-09 2010-06-08 Surfango, Inc. Watercraft propelled by a water jet
DE202011051071U1 (de) 2011-08-24 2011-11-09 Sashay Gmbh Steuerbares Surfbrett
DE102015103503A1 (de) * 2014-10-07 2016-04-07 Sashay Gmbh Aufblasbares Surfbrett II
WO2016061274A1 (en) * 2014-10-15 2016-04-21 Boomerboard, Llc Electric motor for watercraft
CN205738032U (zh) * 2016-05-12 2016-11-30 浙江道丰进出口有限公司 一种水上动力滑板冷却系统

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807152A (en) * 1996-02-06 1998-09-15 Wojcik; Warren Surfboard and method of making same

Also Published As

Publication number Publication date
EP3526112A1 (de) 2019-08-21
HRP20220443T1 (hr) 2022-05-27
ES2910260T3 (es) 2022-05-12
DE102017130963A1 (de) 2019-06-27
WO2019122176A1 (de) 2019-06-27

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