EP0929437A1

EP0929437A1 - Watercraft

Info

Publication number: EP0929437A1
Application number: EP97910256A
Authority: EP
Inventors: Hanno Würzburg
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-05
Filing date: 1997-10-06
Publication date: 1999-07-21
Anticipated expiration: 2017-10-06
Also published as: EP0929437B1; DE19781082C1; ES2163745T3; DE19781082D2; US6085678A; DE59704321D1; DE19641146A1; AU4771597A; WO1998015451A1

Abstract

The watercraft has two parallel surfboards (28) arranged at a distance from each other and connected by means of a frame. The two legs of the frame which lie in the direction of travel have flexible elements (4), and the frame forms a diagonally braced rectangle. The flexible elements (4) and the diagonal bracing (13) considerably improve the travelling behavior of the watercraft. This becomes particularly effective at high speeds and when the surf boards are subjected to strong forces.

Description

Watercraft

The invention relates to a watercraft with two surfboards arranged in parallel and at a distance from one another, which are connected to one another with the aid of a ralim.

Such a watercraft is known from DE 40 30 225 and from DE 42 43 752.

However, the watercraft described there have the disadvantage that they easily start to become unstable at high speeds, which on the one hand negatively influences the driving behavior and on the other hand leads to extreme stresses on the frame.

The invention is therefore based on the object of further developing a generic watercraft so that it has good driving properties even at high speeds.

This object is achieved in that in a generic watercraft the two legs of the frame lying in the direction of travel have flexible elements and the frame forms a diagonally braced rectangle.

CORRECTED SHEET (RULE 91)

ISA / EP The frame constructed in this way transfers the forces acting on the frame to partial areas of the frame, which results in lower resistance and thus a higher top speed.

The previously known surf gliders have rigid frame legs lying in the direction of travel and cause the watercraft to rock heavily when traveling faster. In contrast to this, the frame according to the invention is designed so that it is statically rigid, only the rear foot straps of the surfboards and possibly an outboard motor. Flexible elements are attached to the rear frame part, which dynamically connect the main frame with the connection heads on the right and left. The connection heads are rigid, easily detachably connected to each other via the perch and braced diagonally with the corner points of the main frame. With this arrangement, the connection heads can be viewed individually, freely vertically, dynamically movably on the frame. A shaft lifting the boat on one side only lifts one board and therefore the vehicle less.

The diagonal bracing is preferably carried out by crossing ropes. As an alternative or in addition to this, the diagonal bracing can also be absorbed by a stronger rectangular material. This fabric can also serve as a seat.

It is advantageous if the flexible elements are elastic. Although the bracing and the arrangement of the flexible connecting pieces already ensure a certain elasticity of the frame, it is advantageous if the flexible elements are designed to be elastic.

CORRECTED SHEET (RULE 91) The transport of the watercraft is greatly simplified if the frame can be divided in the area of the flexible elements. By dividing the frame in the area of the flexible elements, two rigid frame parts are created, which can be firmly connected by inserting the flexible elements and the diagonal bracing.

An advantageous embodiment of the watercraft according to the invention provides that the frame is easily detachably connected to the surfboards via a mast foot receptacle and foot straps of the surfboards. This makes it possible to use standard surfboards that can be used both as watercraft according to the invention and as surfboards without major conversion measures.

Excellent driving characteristics result when the watercraft has a manually operable device for direction control, by means of which the surfboards are swiveled in the opposite direction to the directional control by means of the foot straps attached to them via the easily detachable support elements which are pivotally attached to the frame. The swiveling of the surfboards when cornering, for example, enables significantly tighter curves, since the surfboards partly take on the function of a keel or sword.

It is advantageous if the frame has control devices. Devices for changing the direction of travel, transmission controls or speed control devices can be provided on the frame, for example. A steering device is preferably attached to a frame spar connecting the surfboards, while the translation and speed

CORRECTED SHEET (RULE 91) Control devices are arranged on the legs of the frame lying in the direction of travel.

In addition, it is provided that fastening devices are arranged on the frame. These fastening devices can serve a wide variety of purposes, such as, for example, fastening luggage containers, reserve tanks or the like.

The fastening devices can also be used to attach a sail to the watercraft. Preferably, at least one mast foot holder known in surfing is attached to the frame in order to attach one or more sails to the watercraft. In addition, however, a fixed mast can be attached to the frame and anchored there.

It is particularly advantageous if the frame has devices for fastening swords. These swords are preferably fins known from the surfing sector, which should be arranged approximately in the middle of the frame.

In particular at high speeds, it is advantageous if the frame part located at the front in the direction of travel has a spoiler. Such a spoiler ensures, for example, that the bow of the watercraft is pressed down when traveling above 50 km / h. Straight-ahead running at high speeds can also be supported by upright guide fins that protrude into the air.

A simple, stable frame structure is achieved in that the in

CORRECTED SHEET (RULE 91)

ISA / EP Legs of the frame lying in the direction of travel are connected at opposite ends, preferably at the rear ends in the direction of travel, with a rope. Attaching a rope in the rear area also ensures that an engine attached to the frame is protected.

An embodiment of a watercraft according to the invention is shown in the drawings and is described in more detail below. It shows,

FIG. 1 shows a side view of the watercraft according to the invention,

FIG. 2 shows a front view of the watercraft according to FIG. 1,

FIG. 3 shows a plan view of the watercraft according to the invention,

Figure 4 is a plan view of the drawn frame of the

Watercraft,

Figure 5 different, enlarged details of the left in the direction of travel

Frame head,

FIG. 6 shows various details of the frame head on the right in the direction of travel,

FIG. 7 shows an enlarged section of the steering frame and an illustration of a perch,

Figure 8 with various details of a rear frame part in the direction of travel

CORRECTED SHEET (RULE 91) Deflection device,

FIG. 9 two views of the motor mirror,

FIG. 10 shows two views of a tank holding device,

FIG. 11 two views of a detail of the rear frame part in the direction of travel,

FIG. 12 different details of a support and a connecting rod,

FIG. 13 two views of an insertion element with a tensioning strap,

FIG. 14 a carrier tube for a seat cloth,

Figure 15 shows a detail of the front frame and

16 individual elements of a deflection device.

The surf glider shown in FIGS. 1 to 3 has two parallel and vertically movably connected surfboards 28 that are spaced apart from one another by a frame. The front spoiler 10 attached from the front is inserted at an angle of 15 to 40 ° so that it can be moved into the rigid front elements 9, which are inserted into the frame heads (connecting heads) 7. These are laterally rigidly connected to one another via the perch 6 and have a silicon connection 26 to the surfboard 28 underneath and a receptacle for a

CORRECTED SHEET (RULE 91) Torsion connecting element 4, which is inserted into the rear main frame 1 with another end. Through a connecting rod 6, which serves as a seat and a steering frame 8, the frame heads 7 are rigidly connected to each other and held together by the seat cloth 20, which is inserted over the front elements 9 and attached to the seat frame 5. The rear frame 1 is braced diagonally with the frame heads 7 using steel cables 13 and thus keeps the rectangle statically stable since the rear frame 1 is statically rigid. On this subframe 2 are inserted towards the rear, on which the supports 3 rotate, which are easily detachable, non-slip, attached to the foot straps of the surfboard 28 by means of tensioning lamps 21 and foot strap inserts 15. The rotatable supports 3 are connected via a connecting rod 12, via which the steering force is deflected uniformly against the steering movement of the motor 22 by means of a deflection lever 17 onto the surfboards 28 to support cornering. The motor 22 is conventionally screwed to the motor mirror 1 1. An outboard motor 22 is attached to the motor mirror 11 by means of conventional technology, the steering connection of which is movably attached to the bell crank 17 and the raft transmission 25.

In front of the engine 22 there can be a tank holder 24 on the main frame 1, which holds a tank 23 detachably by means of tensioning lamps 21.

On the steering frame 8 there is the steering wheel 31, on the bearing of which a steering force transmission 25 is attached, which transmits the steering force to the bell crank 17 on the motor 22.

In FIG. 4 the watercraft is without surfboards 28, motor 22, seating 30

CORRECTED SHEET (RULE 91) ISA / EP and shown without a pad 3 and the tank 24. The top view shows a frame that is capable of twisting. For this purpose, the steel cables 13 keep the rectangle statically stable when the force is applied. The front front spoiler 10 can be adjustably attached at an angle and is inserted into the front elements 9 and secured with locking pins 14. You can clearly see the perch 6, which is inserted into the two frame heads 7 and locked with locking pins 14, holding them rigidly together. In the rear part, the motor mirror is shown, which is attached to the frame 1 by insert sleeves and locking pins 14 and is easily detachable at an angle. The pads 3 rotate on the rear subframe 2 and are adjusted by the connecting rod 12 evenly, depending on the position of the bell crank 17 to the left or right to support cornering on the surfboards. The upper part 18 of the bell crank 17 is connected to the steering and the lower part 19 directs the force onto the connecting rod 12. The upper part 18 also contains the receptacle for the tiller arm 16, which connects the steering device to the motor 22. The steering force is conventionally guided by the steering wheel 31 by means of hydraulics to the connection 1.1 and the deflection. The rear subframes 2 are plugged into main receptacles on the main frame 1 and secured with locking pins 14.

In addition, there may be eyelets at the rear end of the subframe, into which a tensioning cable 13 is hung to support the end points under increased load.

In Figures 5 and 6, two frame heads are shown in three views

CORRECTED SHEET (RULE 91)

ISA / EP are mirror images of each other. The front elements 9 are inserted into the opening 7.4 and secured by an opening with a locking pin 14. In 7.1 the steering frame is firmly inserted and also secured. At position 7.5 there are several openings which allow flexible fastening of the silicon connectors 26 and thus facilitate adaptation of the frame to different surfboards 28.

In addition, a torsion connection element 4 is shown in Figure 6, which consists of a flexible material and is available on both sides of the frame in the same version. It has a bore 4.1 which receives the locking pin 14 and secures the end with it after insertion into the opening 7.6 on the frame head 7. The other end with the hole 4.2 is inserted into the opening 1.4 on the main frame 1 and secured with locking pins 14. At point 7.3 the seat bar 6 is inserted and secured and at point 7.5 the seat frame is inserted and secured by pins 14. This frame head 7 is made of rigid material and should not twist.

FIG. 5 shows a conventional engine control 32 which is attached to the starboard side of the watercraft and which offers increased ease of use at this point. The engine 22 can be operated with a throttle control by means of this engine control 32

32.2 and another lever 32.1 for comfortably regulating the gears.

Furthermore, a tensioning rope 13 is shown in FIG. 5, the end 13.1 of which represents an eyelet which is firmly snapped onto the holding point 7.5. The other end 13.2 of the tensioning rope is also provided with a fixed eyelet, which is in a rotary tensioner

13.3 is firmly locked. This rotary tensioner 13.3 is in the attachment point 1.7

CORRECTED SHEET (RULE 91) suspended and rotated in the completely assembled Ralimen on the rear main frame 1 so that the center of the rope can be moved by a maximum of 3 cm.

FIG. 7 shows a steering frame 8 with a steering wheel 8.1 and a seat rod 6. In 8.2 there is a conversion of the steering force into, for example, hydraulics, so that the steering force can be passed on to the motor 22.

The perch 6 has a screwed-on receptacle 6.3 for conventional surfers 27. These serve to stabilize cornering.

FIG. 8 shows a main frame 1 in three views, from which everything that can be removed has been removed. When it comes to transport, it is the largest single component of the dismountable frame. It is statically rigid and transmits the driving forces of the motor particularly well. The torsion connection elements are inserted at points 1.4. At 1.3, the rear subframes are inserted and secured. The bell crank 17 rotates to 1.1 and is secured with a split pin. 1.5 is a holder for a commercial hydraulic steering implementation. A tank bracket can be screwed onto 1.6. The brackets 1.7 are provided for the clamping parts.

FIG. 9 shows a motor mirror 11 in two views with screwed-in insertion sleeves 1.2. 11.1 is a protective plate made of aluminum, which protects the motor mirror 11 made of wood from the retaining screws of the motor 22.

FIG. 10 shows a holding device 24 for a tank, which is attached to the main frame 1

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ISA / EP constantly screwed to the designated receptacles 1.6 attached. The tank 23 is easily releasably clamped to the holder with tensioning straps or tensioning lamps 21. 21.1 is a tension lock of a tension lamp.

A rear subframe 2 for the supports 3 is shown in two views in FIG. This subframe 2 is mirrored twice and serves the supports 3 as an axis of rotation.

Figure 12 shows the edition 3 in two views and a connecting rod 12 in a shortened drawing. At the end points 12.1 there are ball joints 12.3, which are screwed together with their head opening 12.4 to the opening 3.1 of the supports. The opening 12.2 is connected in an articulated manner to the lower unit 19.3 of the deflection joint 17 by a locked axis. The guidance of a tensioning lamp 21 is shown in the upper part of the drawing. The beginning of the tensioning lamp 21 is guided through the opening 3.3 in the support 3 from above and inserted under the insert 15 through its insert opening 15.1. Then place the rope 21 over the pipe section of 3 or 2 and proceed in the same way with the other foot strap by passing the rope 21 through the recess 15.1 on the underside of the insert and again from below through the opening 3.3 of the support 3. With the closure 21.1, the tensioning strap 21 is then pulled taut and tensioned so that there is no play between the surfboard 28 and pads 3. The insertion element 15 should completely fill the respective foot strap 28.1.

FIG. 13 shows a footstrap insert 15, which is shown in two views. A soft, adaptable foam layer 15 is glued to the underside,

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ISA / EP which protects the surfboards 28 from damage. The X-shaped recess allows universal use with right and left foot straps.

Figure 14 shows a support tube 5 for a seat cloth 20 up to its mirror axis and a locking pin 14. This locking pin 14 is of conventional design with a head and a shaft, at the end of which a lock 14.1 can be flipped. This is shown here in the secured state, since the leg 14.1 is vertical. In order to pull out the pin, the leg 14.1 must be in alignment. The lower ends 5.2 of the frame tube 5 are inserted into the receptacles 7.2 provided for this purpose on the frame heads 7 and secured with a locking pin 14. The eyelets 5.1 are provided to hold the seat cloth 20.

FIG. 15 shows a front frame 10 on which a front spoiler set up at the edges can be attached at a slight angle. This prevents the front of the entire surf glider from lurching when driving above 50 km / h. Since this is variable at the front, slightly downwards, it generates downforce. The vertically standing ends 10.2 can be the surf fins normally attached to the surfboard. This front spoiler should be sturdy since it is often used to get on and off the watercraft.

FIG. 16 shows the individual components 16 to 19 of the deflection device. The deflection joint 19 is present twice and connected at one point by an articulated locked axis, so that a scissor joint is formed. This transmits the forces at variable distances and changes its angle. The other openings 19.1 are connected in an articulated manner to the connecting rod 12 at the attachment point 12.1 and on the other hand to the bell crank

CORRECTED SHEET (RULE 91) ISA / EP 17 at its opening C. The opening 17.1 is placed over the pin 1.1 and locked so that the bell crank 17 can rotate on it.

At its upper opening C, the lever 18.2 is also connected at its point B in an axially connected manner. Its upper point A is also connected to the point A of the steering arm end 18.1 in an articulated manner. This is connected to the end of the jkkramjbertragung 25 attached to the main frame 1 and thus directs the steering force to the lever 18.2, which further directs the steering movement to the bell crank 17, which reverses it in the opposite direction and forwards it to the connecting rod 12 by means of a scissor joint 19 . The other opening 18.3 at the end of the steering arm 18.1 receives the tiller arm 16, which transmits the steering force and the steering movement to the motor 22.

If the steering wheel 8 is now rotated clockwise, the steering force transmission 25 transmits a movement to the motor 22 which causes the boat to move to the right. At the same time, the surfboards 28 are seen in the direction of travel, swiveled to the right and swung to the left, so that support is provided by the surfboards when cornering.

An alternative embodiment, which can easily be upgraded to an embodiment according to the invention by flexible elements and a diagonally braced rectangle, is known from German patent DE 42 43 752. The embodiment described there has many of the same and many similar elements that can also be used in the embodiment described above.

CORRECTED SHEET (RULE 91) ISA / EP

List of the reference symbols used

1 rear main frame

2 rear subframe for the supports (see Figure 1 1)

3 editions (see Figure 12)

4 torsion fasteners

5 seat frame (see Figure 14) 6 perch

7 frame heads

8 steering frame

9 front elements

10 front frame with front spoiler (see Figure 15) 11 engine mirror

12 pad connecting rod

13 tension cables

14 locking pin

15 foot strap inserts (see Figure 13) 16 tiller arm (see Figure 16)

17 bellcrank (see Figure 16)

18 Upper steering arm (see Figure 16)

19 lower steering arm (see Figure 16)

20 seat cloth 21 tension ropes

22 engine

CORRECTED SHEET (RULE 91) tank

Tank bracket (see Figure 10)

Steering power transmission

Connection adapter

Finns

Surfboards

Screws

air mattress

steering wheel

Engine control

CORRECTED SHEET (RULE 91) ISA / EP

Claims

Claims:

1. Wasserfalirzeug with two parallel and spaced surfboards (28) which are connected to each other with the aid of a frame, characterized in that the two legs of the frame (1) lying in the direction of travel have flexible elements (4) and the frame ( 1) forms a diagonally stretched rectangle.

2. Watercraft according to claim 1, characterized in that the flexible elements (4) are elastic.

3. Watercraft according to one of the preceding claims, characterized in that the frame (1) in the region of the flexible elements (4) is divisible.

4. Watercraft according to one of the preceding claims, characterized in that the frame (1) via a mast foot receptacle and foot straps (28.1) of the surfboards (28) is easily detachably connected to the surfboards (28).

5. Watercraft according to one of the preceding claims, characterized in that it has a manually operable device for directional control (8), via which the surfboards (28) by means of the foot straps (28.1) on them via the easily detachable support elements ( 3), which are pivotally attached to the frame (2), can be pivoted in the opposite direction.

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6. Watercraft according to one of the preceding claims, characterized in that the frame (1) has control devices (31).

7. Watercraft according to one of the preceding claims, characterized in that the frame (1) has fastening devices.

8. Watercraft according to one of the preceding claims, characterized in that frame (1) has means for fastening swords.

9. Watercraft according to one of the preceding claims, characterized in that the frame part lying in the direction of travel has a spoiler.

10. Watercraft according to one of the preceding claims, characterized in that the legs of the frame lying in the direction of travel are connected at opposite ends, preferably at the rear ends in the direction of travel, with a rope (13).

CORRECTED SHEET (RULE 91) ISA / EP